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20 Best Tankless Water Heater Electric (Feb 2023 Update)
Are you looking for the Best Tankless Water Heater Electric? If so, you’ve come to the right place.
Choosing the Best Tankless Water Heater Electric can be difficult as there are so many considerations, such as A. O. Smith, Bradford White, Eccotemp, Eemax, Noritz, Rheem, Rinnai, Stiebel Eltron. We have done a lot of research to find the Top 20 Best Tankless Water Heater Electric available.
The average cost is $417.24. Sold comparable range in price from a low of $146.28 to a high of $1140.19.
Based on the research we did, we think Stiebel Eltron Tempra 36 Plus Whole House Electric Tankless Water Heater is the best overall. Read on for the rest of the great options and our buying guide, where you can find all the information you need to know before making an informed purchase.
20 Best Tankless Water Heater Electric (20 Sellers)
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Reviewers Noted:
Heats quickly . Easy to set up . Compact . Craftsmanship . Ease of use
Features:
- On-demand, continuous and unlimited supply of hot water
- Sleek design saves space and no venting required
- Electronic switch activated for virtually silent operation. phase- single 60 hz. voltage- 208 v. wattage- 27 kw
Reviewers Noted:
Compact . Easy to set up . Well made . Heating speed
Features:
- Smart microprocessor technology unique to tempra water heaters delivers steady water temperature even when flow rate vary as taps are adjusted
- Self-modulating technology saves energy by adjusting electrical usage
- Tempra tankless electric water heaters must be correctly sized and you should consult the sizing guide to determine the correct model for you
Reviewers Noted:
Ease of setup . Craftsmanship
Features:
- External digital thermostatic control with led display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable copper immersion two heating elements, field serviceable
Reviewers Noted:
Heating speed . Ease of setup . Size . Craftsmanship
Features:
- Compact size saves valuable storage space save energy
- Patented self-modulating technology adjusts energy based on hot water needs save time
- No venting, unit can be installed directly at the point-of-use save money
Reviewers Noted:
Poorly made . Heating speed . Ease of setup
Features:
- On demand, consistent and endless hot water
- Compact and stylish with digital temperature control in increments of 1°f ranging from 80°f to 140°f
- 99.8% energy efficient. external controls to adjust temperature in increments of 1°f
Reviewers Noted:
Search . Easy to set up . Ease of use . Compact . Craftsmanship
Features:
- German-designed with high quality stainless steel water channel and heating chamber.
- Requires (1) 60 amp breaker and must be installed by a professional plumber or electrician to ensure safety and quality.
- Marey's eco line can maintain 98% efficiency level throughout their lifetime.
Reviewers Noted:
Search . Heats quickly . Easy to set up . Compact . Craftsmanship
Features:
- 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it
- Electric water heater is easy to maintain and has glass-lined tank for long service life
- 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
$579.99
4.4
Reviewers Noted:
Search . Compact . Poorly made . Easy to set up . Heats quickly
Features:
- Provides continuous hot water for ultimate convenience
- Patented self modulating technology and design
- Designed with standard and reliable easy to service elements and hea
$662.00
4.7
Reviewers Noted:
Heats quickly . Easy to set up . Compact . Craftsmanship . Ease of use
Features:
- Tempra tankless electric water heaters must be correctly sized and you should consult the sizing guide to determine the correct model for you
- Requires 240 volt or 208 volt electric service, and has a maximum output of 28,800 watts at 240 volts or 21,600 watts at 208 volts
- Supplies endless hot water at a constant and steady temperature from 68 to 140°f (20-60°c) that can be set on the front panel digital display
Reviewers Noted:
Performs well . Craftsmanship . Ease of setup . Ease of use . Size
Features:
- Part number
- Item weight
- 0.01 ounces
Reviewers Noted:
Heats quickly . Craftsmanship . Visual appeal
Features:
- Serves 2 sinks + 1 shower
- Simple and secure operation
- Easy and quick installation
$479.99
4.5
Reviewers Noted:
Easy to set up . Compact . Ease of use . Craftsmanship . Noise level
Features:
- Compact size saves valuable storage space save energy
- Patented self-modulating technology adjusts energy based on hot water needs save time
- No venting, unit can be installed directly at the point-of-use save money
$269.99
4.6
Reviewers Noted:
Search . Easy to use . Compact . Well made . Easy to set up
Features:
- Provides continuous hot water for ultimate convenience.
- Patented self modulating technology and design.
Reviewers Noted:
Search . Compact . Heats quickly . Easy to set up . Easy to use
Features:
- Endless hot water
- Space savings
- Energy saving, ul compliant & etl lead free certified
Features:
- Sleek and compact design with digital output temperature display
- Ecosmart tankless water heaters are 99.8-percent energy efficient
- Manufactured in united states
Reviewers Noted:
Heating speed
Features:
- Stores up to 2.5 gal. of water to supply hot water rapidly
- It easy and straight-forward to install and includes an appliance line
- Ideal for buffer and point-of-use applications
Reviewers Noted:
Size . Heating speed . Craftsmanship
Features:
- Provide warm water around 90 to 100 degrees f for hand washing at 1 high-flow (1.0 gpm) sink in a warm climate
- Requires 208/240 volt electric service, 1 dedicated 30 amp breaker, and 10 gauge copper wiring
- Equipped with nichrome (nickel-chromium) bare-wire heating element
Features:
- External digital thermostatic control with led display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable copper immersion two heating elements, field serviceable
$499.99
4.9
Reviewers Noted:
Compact . Heating speed . Ease of use
Features:
- Can serve up to 6 applications (4 showers and 2 faucets in in warm to hot climates).
- Reference the performance guide to confirm this unit will provide sufficient hot water to meet your need.
- Requires 3 x 40a double-pole breakers, 3 x 8/2 awg wires, 240v.
Reviewers Noted:
Heating speed . Ease of setup . Size . Craftsmanship
Features:
- Ecosmart eco 11 electric tankless water heater, 13kw at 240 volts with patented self modulating technologydetails:this smart technology electric tankless water heater is configured as a "whole home" model for…
1. Stiebel Eltron Tempra 36 Plus Whole House Electric Tankless Water Heater
Product Details:
Powerful output, compact design, remarkable energy-saving features. our whole house electric tankless water heaters perform with the highest standards for comfort and reliability. tempra plus models feature advanced flow control, patented in germany and exclusive to stiebel eltron tankless heaters. if hot water demand exceeds working capacity, advanced flow control automatically maintains consistent temperatures by slightly reducing flow. intelligent self-modulating technology continually ensures the least amount of energy is used to heat the water. a tempra 36 plus provides hot water at a consistent temperature for 3-4 bathrooms in warm climates, or 2-3 bathrooms in cool climates. see sizing to determine which model is best for you. stiebel eltron invented tankless electric water heating technology more than 90 years ago, and is still the industry pioneer and world leader. our engineering and manufacturing tradition of excellence means you can depend on the performance and reliability of our products.
Specifications:
| Item – Water Heaters | Electric Tankless Water Heater |
| Water Heater Design | Whole House |
| Water Heater Application | General Purpose |
| Commercial / Residential | Both |
| Watts – Water Heaters | 36,000 |
| Amps – Water Heaters | 150 |
| Voltage – Water Heaters | 208/240 |
| Min. Flow Activation | 0.77 gpm |
| Phase – Water Heaters | 1 |
| Temp. Range – Water Heaters | 70 Degrees to 140 Degrees F |
| Temp. Rise @ 1.5 GPM | 92 Degrees F |
| Temp. Rise @ 2.5 GPM – Water Heaters | 90 Degrees F |
| Pressure Range | 30 to 150 psi |
| Mounting | Any Direction |
| Standards | ETL Listed, WQA |
| Default Temperature | 140 Degrees F |
| Temp. Rise @ 6.0 GPM | 41 Degrees F |
| Wire Size | 6/2 AWG |
| Water Connection | 3/4" NPT |
| Temp. Rise @ 0.5 GPM | 92 Degrees F |
| NEMA Rating | 1 |
| Max. Flow Rate | 1 gpm |
| Elements | Copper Sheathed Housed in Cylinder |
| Market | Commercial, Residential |
| Current | 44 A, 50 A |
| Cord Conductor Gauge | 8/2 AWG Wire |
| Mounting Type | Wall Mounting |
| Minimum Flow Activation | 0.77 gpm |
| Overall Dimensions – H x W x D | 14.5 in x 16.63 in x 4.63 in |
| Minimum Water Pressure | 30 psi |
| Mounting Orientation | Horizontal, Vertical |
| Temperature Range | 70 Degrees F to 140 Degrees F |
| Cold Inlet Size | 3/4 in |
| Operating Voltage | 208/240V AC |
| Environment | Indoor |
| Element Material | Copper |
| Maximum Flow Rate | 1 gpm |
| Adjustable Thermostat | Yes |
| Maximum Water Pressure | 150 psi |
| Power Consumption | 36,000 W |
| Country of Origin (subject to change) | Germany |
Reviews:
I was hoping for so much from this product. Yesterday I took such a hot shower during lunch and then that evening when I gave my daughter a bath, it only came out lukewarm. My shower today was borderline cold. Tomorrow it may be hot again. I live in Northern VA and would not recommend this product. It ruins the experience of our new bathroom remodel. There's nothing worse than remodeling your bathroom to your dream bathroom and hearing your wife say, well that bath wasn't relaxing since she couldn't get hot water.ChristianMC
We purchased this unit about 1 month ago, replacing a Natural Gas water heater with 40g tank. The savings in space, and the removal of the fossil fuel device were our key drivers for this purchase. Our Electric bill has increased significantly, by about 50%, but because we never run out of hot water, showers tend to be longer. And now we can actually fill our tub with hot water without boiling extra water on the stove, so this also has increased our usage. There is an issue with temperature stability, when a toilet is flushed or other demand for water is turned on, the temperature swing is very noticeable. I have added a shower temp gauge, and have seen the temp drop from 42c to 39c when a toilet is flushed, it takes about 10-15 seconds to recover, and likewise, when the water demand drops, the temp goes up from 42c to 44.5c for several seconds. This shower valve has a pressure regulated flow control, so changes in the water will take some time to correct. Pros: Save on Space, endless hot water, retired fossil fuel appliance, not storing heated water we aren't using. Cons: High electricity costs, temperature changes when pressure changes for several secondsChris
Don't buy it…it's terrible,I bought the tempra24 plus from home depot, I installed all specified wires and circuits so it would work properly and efficiently but this this is horrible… my electric and water bill did go down even more than I had Anticipated but hate it…No constant temperature what so ever. I'm getting it removed and getting one installed by a professional.. the tempraplus was a waste of moneyBrian Lackie
2. Stiebel Eltron Tempra 36 Trend Whole House Electric Tankless Water Heater
Product Details:
The tempra 36 trend is capable of providing consistently hot water to several fixtures at once while reducing energy usage. 240/208v – 36 kw copper tankless electric w. digital thermostat tempra trend models feature a memory preset that makes it easy to return to your ideal water temperature at the push of a button. with the tempra trend, you’ll enjoy endless hot water, unrivaled efficiency, and the utmost in comfort. a stiebel eltron tempra responds directly to your demand for hot water without interruption. showers will always be hot, even if there are several taken in a row and they run long. every tempra has self-modulation. self-modulation ensures that only the least amount of energy is used at all times.
Specifications:
| Item – Water Heaters | Electric Tankless Water Heater |
| Water Heater Design | Whole House |
| Water Heater Application | General Purpose |
| Commercial / Residential | Both |
| Watts – Water Heaters | 36,000 |
| Amps – Water Heaters | 150 |
| Voltage – Water Heaters | 208/240 |
| Min. Flow Activation | 0.77 gpm |
| Phase – Water Heaters | 1 |
| Temp. Range – Water Heaters | 70 Degrees to 140 Degrees F |
| Temp. Rise @ 2.5 GPM – Water Heaters | 90 Degrees F |
| Pressure Range | 30 to 150 psi |
| Standards | ETL Listed, WQA |
| Temp. Rise @ 0.5 GPM | 92 Degrees F |
| Mounting | Any Direction |
| Water Connection | 3/4" NPT |
| Wire Size | 6/2 AWG |
| NEMA Rating | 1 |
| Elements | Copper Sheathed Housed in Cylinder |
| Temp. Rise @ 1.5 GPM | 92 Degrees F |
| Temp. Rise @ 6.0 GPM | 41 Degrees F |
| Default Temperature | 140 Degrees F |
| Max. Flow Rate | 1 gpm |
| Maximum Flow Rate | 1 gpm |
| Minimum Flow Activation | 0.77 gpm |
| Element Material | Copper |
| Mounting Orientation | Horizontal, Vertical |
| Market | Commercial, Residential |
| Operating Voltage | 208/240V AC |
| Current | 44 A, 50 A |
| Power Consumption | 36,000 W |
| Temperature Range | 70 Degrees F to 140 Degrees F |
| Mounting Type | Wall Mounting |
| Adjustable Thermostat | Yes |
| Maximum Water Pressure | 150 psi |
| Cold Inlet Size | 3/4 in |
| Overall Dimensions – H x W x D | 14.5 in x 16.63 in x 4.63 in |
| Cord Conductor Gauge | 8/2 AWG Wire |
| Environment | Indoor |
| Minimum Water Pressure | 30 psi |
| Country of Origin (subject to change) | Germany |
Reviews:
A year ago we purchased a new home. I asked the contractor to install a tankless water heater. He installed an electric A O Smith tank unit instead and claimed that he researched tankless units and that they could not keep up with the volume of hot water our three person family would need. We live in a community that provides treated well water. After a year our hot water smelled strongly of sulfer. We were told that the diode in our tank would have to be changed either with a very expensive diode or with the standard one but done annually. Unfortunately A O Smith installs the diode's with a robot or a person that is determined that it would never come out. Removal attempts turned the bolt into a perfectly round piece. It is sunk 6" into the tank which prevents use of a pipe wrench. A new water heater was required or we had to live with the smell. I did my own research and determined that this 2400w tankless unit should provide all of the hot water our family would ever need. I purchased it from Zoro on a Friday and it was on our porch on Sunday when we got home from church. I spent the day replacing the unit. The tankless works great. We are very pleased with it. We have a large tub in our master bath that would only fill half way before the water in the 40 gallon tank model turned cold. The tankless unit stays hot until you turn it off.j The bonus is this takes up only a fraction of the room that the old unit required.Guest
Although this seems like the way to go, I ordered this figuring it would be perfect for the Basement suite that I'm putting in. Ordered it, my contractor took a look at it and informed me that most serviced residential homes do not have enough amps going to them to be able to run this as well as everything else in your home, for a commercial lot it would be fine. That the service to the home would need to be upgraded, which is an even bigger expense. So beware as to whether you're able to use this.frustrated renos
I self installed the unit a week ago. Since my existing electrical panel only had room for one double pole breaker I had to install a 100 amp breaker and run to a sub panel for the two 50 amp breakers required for the unit. I was able to mount the sub panel and the water heater on the wall in the space formerly occupied by the tank heater. I also installed a sediment filter on the input side of the heater. The installation went smoothly and was completed in less than a day. So far the unit is supplying plenty of hot water for my wife and I. We are able to take long, hot showers with no drop in water temperature or water pressure. It can also handle the dish washer and the washing machine, but not at the same time. The unit is well constructed and the installation instructions are good. Total cost of the unit, sub panel, breakers and other fittings came out to less than $800. All and all we are very satisfied and would recommend this unit for any household with similar requirements: 2 people, dish washer and laundry. Three or more people may require a larger unit.
3. Rheem Rtex-18 18kw Tankless Electric Water Heater
Product Details:
Ideal for a large apartment/townhome with up to 3 people. the rtex-18 is the mid-range model that can heat over 2.5 gallons per minute. it can handle a shower and a sink in cool climates. in warmer climates, it can handle two showers and two sinks on demand, consistent and endless hot water. 99.8% energy efficient. compact and stylish design with digital temperature control. simple installation. save space. save water. robust copper immersion heating element. advanced self-modulation, adjust power to meet hot water demand. element threaded for easy replacement. save energy.
Specifications:
| Item – Water Heaters | Electric Tankless Water Heater |
| Water Heater Design | Whole House |
| Water Heater Application | General Purpose |
| Commercial / Residential | Both |
| Watts – Water Heaters | 18,000 |
| Amps – Water Heaters | 75 |
| Voltage – Water Heaters | 208/240 |
| Min. Flow Activation | 0.30 gpm |
| Phase – Water Heaters | 1 |
| Temp. Range – Water Heaters | 59 Degrees to 140 Degrees F |
| Standards | UL 499, CSA |
| Amps AC | 75 |
| Default Temperature | 120 Degrees F |
| Temp. Rise @ 6.0 GPM | Limited to Thermostatic Setting |
| Phase | single |
| Tank Capacity | 18 gal. |
| Max. Flow Rate | 4 gpm |
| Elements | Lead-Free Replaceable Cartridge Insert |
| Fuel Type | Electric |
| Temp. Range | 59 Degrees to 140 Degrees F |
| Water Connection | 3/4" NPT |
| Height to Top of Vent Connection | 18.25" |
| Voltage | 208/240VAC |
| Residential / Commercial | Both |
| Mounting | Wall |
| Vent Type | Tankless Electric |
| Pressure Range | 25 to 150 psi |
| Temp. Rise @ 4.0 GPM | 31 Degrees F |
| Height to Top of Heater | 18.25" |
| Temp. Rise @ 2.5 GPM – Water Heaters | 49 Degrees F |
| Wire Size | 8 AWG |
| Temp. Rise @ 2.5 GPM | 49 Degrees F |
| Environment | Indoor |
| Element Material | Copper |
| Current | 75 A |
| Minimum Water Pressure | 25 psi |
| Temperature Range | 80 Degrees F to 140 Degrees F |
| Adjustable Thermostat | Yes |
| Minimum Flow Activation | 0.3 gpm |
| Cord Conductor Gauge | 8 AWG Wire |
| Water Connection Location | Bottom |
| Control Type | Dial, Digital Display with Keypad |
| Maximum Water Pressure | 150 psi |
| Cold Inlet Size | 3/4 in |
| Power Consumption | 18,000 W |
| Overall Dimensions – H x W x D | 18.25 in x 8.25 in x 3.5 in |
| Market | Residential |
| Mounting Type | Wall Mounting |
| Maximum Flow Rate | 7 gpm |
| Operating Voltage | 240V AC |
| Country of Origin (subject to change) | China |
Reviews:
Works great as long as you don't want to take a hot shower. Constant E5 code (cannot keep up with water flow) and shuts down the hot water so all you get is a cold shower. If you let the water just barly trickle outthen it heats up fine. I lost a lot of money setting this up only to find that it will not work unless the water is already warm. Now I have to spend more money to buy a tank hot water heater. Very disappointingRussell Randant
The tank failed and got water all in my house! I sent a warranty claim but never heard any response. I have sent pictures etc to show the product failed again i have yet to hear any response about the issue! Also i used the charts to decide what heater was right for my house but the unit never performed to our liking. It would barely put any water out if i would increase the flow it wouldnt heat the water up. Please contact me i'd love to share more detail.Daniel L
This water heater cannot handle 4.4 gallons per minute. It could not even keep up with my shower or kitchen faucet. It requires a lot of power too. It takes two 40 amp breakers and 8 guage wire to power the elements. When it cannot keep up, it flashes an error code and the troubleshooting guide suggests putting a flow regulator that limits it to 2 gallons per minute (less than half its advertised capacity).claytomcge_6
4. Ecosmart 220v Electric Tankless Water Heater
Product Details:
Looking for a efficient way to get hot water to a house bathroom or a business kitchen sink? the eco smart eco8 40 amp 240v electric tanless water heater can be installed in a few easy steps. the electric water heater is configured for incoming water of 67f and above. the heater is perfect for use with radiant heating system. made of stainless steel interior and designed with a copper heating element it is compact and stylish all in one energy efficient electric water heater.
Specifications:
| Assembled Depth (in) | 3.75 in |
| Assembled Height (in) | 12 in |
| Assembled Width (in) | 9.75 in |
| Assembled Weight (lbs) | 7 lbs |
| Item is Shipped at this Packaging Level | Y |
| Packaging Depth | 6.75 IN |
| Packaging Height | 13.5 IN |
| Packaging Width | 10.25 IN |
| Package Weight | 7 |
| Package Weight UOM | LB |
| Net Packaged Quantity | 1 EA |
| Water Heater Style | Tankless |
| Manufacturer Warranty | Limited Lifetime Warranty |
| Commercial / Residential | Residential |
| Flow Rate @ 45°F Rise | 1.2 gpm |
| Flow Rate @ 77°F Rise | 0.7 gpm |
| Gas or Electric | Electric |
| Temperature Pressure Relief Valve (TPR) | No |
| Temperature Range | 80°F – 140°F |
| Water Connection Size | 1/2" CF |
| Efficiency | .99 |
| Element Wattage (W) | 8000 W |
| Family Size | 2 |
| Foam Insulation | No |
| Height | 12 in |
| Width | 9.75 in |
| Weight | 7 lbs |
| Maximum BTU | 27297.136 BTU |
| Amperage (A) | 33 A |
| Voltage (V) | 240 V |
| Wattage | 8000 W |
| Energy Factor | 99.8 |
| ADA Compliant | Yes |
| CSA Certified | Yes |
| ETL Listed | Yes |
| UL Listed | Yes |
Reviews:
For about 6 months it was working fine, then I turned on the hot water and it came out cold. I noticed smoke coming from the unit (ECO 8) and immediately ran for the circuit breaker to shut off. I notified the Eco Smart company through their website contact page, but they never even responded. $200 out the window, but fortunately the house didn't catch fire! To make matters worse, no warranty if you install it yourself! I'm not calling a plumber and electrician for such a simple installation.wutsitsa
Got to me fast and a really great movie.annhen0
This works very well although installing the electricity part was somewhat difficult because of the wire size fitting junction boxes located in the nearby cabinets. Plumbing parts were all available at my local Home Depot. I've reduced the temperature from 120 degrees twice now to 105 because the water becomes quite hot, especially if you turn it off and then back on where it has an opportunity to heat in place rather than simply flowing through the unit. I'm only using it to rinse a few items in the kitchen sink rather than having to wait until the main hot water unit, located 75' away, reaches my sink. And I did need to use Teflon Tape on the provided, 1/2" fittings,….souian
5. Rheem Rtex-04 Electric Tankless Water Heater
Product Details:
Energy-efficient rheem electric tankless water heater only heats water when you need it and features an external temperature display and control, and self-modulating power technology. compact model can save energy, water, and is ideal for delivering unlimited hot water in commercial and residential applications. requires no venting, t&p valve, or drain pan to help ease installation. includes durable brass or stainless steel heat exchanger and a field serviceable element.
Specifications:
| Item – Water Heaters | Electric Tankless Water Heater |
| Water Heater Design | Point-of-Use |
| Water Heater Application | Undersink |
| Commercial / Residential | Both |
| Watts – Water Heaters | 3500 |
| Amps – Water Heaters | 29 |
| Voltage – Water Heaters | 120 |
| Min. Flow Activation | 0.30 gpm |
| Phase – Water Heaters | 1 |
| Temp. Range – Water Heaters | 59 Degrees to 140 Degrees F |
| Standards | UL 499, CSA |
| Elements | Lead-Free Replaceable Cartridge Insert |
| Amps AC | 29 |
| Water Connection | 1/2" NPT |
| Default Temperature | 120 Degrees F |
| Height to Top of Vent Connection | 5.88" |
| Mounting | Wall |
| Pressure Range | 25 to 150 psi |
| Temp. Rise @ 6.0 GPM | Limited to Thermostatic Setting |
| Residential / Commercial | Both |
| Voltage | 120 VAC |
| Height to Top of Heater | 5.88" |
| Temp. Rise @ 0.5 GPM | 48 Degrees F |
| Wire Size | 10 AWG |
| Vent Type | Tankless Electric |
| Temp. Range | 59 Degrees to 140 Degrees F |
| Tank Capacity | 3.5 gal. |
| Fuel Type | Electric |
| Max. Flow Rate | 1 gpm |
| Phase | single |
| Watts | 3500 |
| Minimum Flow Activation | 0.3 gpm |
| Control Type | Digital Display with Keypad |
| Cord Conductor Gauge | 10 AWG Wire |
| Temperature Range | 80 Degrees F to 140 Degrees F |
| Minimum Water Pressure | 25 psi |
| Housing Material | Brass |
| Environment | Indoor |
| Mounting Type | Wall Mounting |
| Adjustable Thermostat | Yes |
| Maximum Flow Rate | 1.5 gpm |
| Current | 29 A |
| Element Material | Copper |
| Maximum Water Pressure | 150 psi |
| Power Consumption | 3,500 W |
| Market | Commercial, Residential |
| Operating Voltage | 120V AC |
| Overall Dimensions – H x W x D | 5.88 in x 10.88 in x 2.75 in |
| Cold Inlet Size | 1/2 in |
| Country of Origin (subject to change) | China |
Reviews:
I've got a large house and more children than most. This unit produces sufficient hot water to run several showers at once and never run out, which is the main point. I'm very pleased with this unit. There's one oddity however; When first starting-up, the water temperature gradually increases until the set-point arrives at the delivery spot and holds there for a few moments, then the temperature wanes to lukewarm/cool, then back to specified temperature. This can be quite a jolt to the system if the user isn't prepared 🙂 But the change is gradual enough to get out of the way in time. This is annoying. The display alternates between my chosen set point "130 F" and "E5", which I assume is an error code. But none of the online documentation provides an error code key from which to ascertain the issue. I have two three-way valves in my installation which allows me to run my system in tankless only, tank only, or tankless preheat followed by tank. In the summer I run tankless only, in winter I typically run tankless as preheat and draw from the tank unit.Engineer Dude
i had it professionally installed and its keeps popping a fuse and stops working all the time . i think it finally completely failed after 1 years of use only and 900 later. i home RHEEM will send me replacement as its under warranty. but seems liek its one of the worse ones to have. all bad ratings. i would like to upgrade to a better one.asta
6. Marey Eco110 Electric Tankless Water Heater – 11kw
Product Details:
Having a proper water heater for your home is essential when it comes to engaging in everyday tasks. the marey eco110 electrical tankless water heater provides a reliable solution while helping you cut down on energy costs. with 11 kilowatts of power, you'll experience efficient heating and flow rate. the water heating unit features heating increases every 28-degrees fahrenheit at a 3 gmp flow rate. enjoy 1 point of use as the water heater can provide hot climates the moment the faucet is opened. the heater is easy to use with the included lcd digital panel for clear readings, controls, and a user-friendly operation. designed with durability in mind, the stainless steel water channel and heating chamber feature long-lasting use and years of providing you hot water. plus, the corrosion-resistant heating element help prevents water build-up from chlorine and calcium for added sustainability. please have a professional plumber or electrician install the heater no more than 40 feet from the intended point of use for the highest safety and quality. have the hot water you deserve at a lower energy consumption with the marey eco110 tankless water heater.
Specifications:
| Required Volt Connection | 220 volt |
| Application Type | Residential |
| Indoor/Outdoor | Indoor |
| Efficiency Level | Super High |
| Fuel Type | Electric |
| Amperage (amps) | 60 A |
| Electricity Phase | Single Phase |
| Finish Family | White |
| Flow Rate @ 35°F Rise (gallons/min) | 2.25 gal (US)/min |
| Flow Rate @ 45°F Rise (gallons/min) | 1.6 gal (US)/min |
| Flow Rate @ 55°F Rise (gallons/min) | 1.5 gal (US)/min |
| Flow Rate @ 65°F Rise (gallons/min) | 1.25 gal (US)/min |
| Maximum Temperature (F) | 95 °F |
| Minimum Activation Rate (gpm) | 0.53 |
| Minimum Temperature (F) | 40 °F |
| Number of Elements | 1 |
| Number of Showers | 1-2 |
| Pack Size | 1 |
| Uniform Energy Factor | 0.98 |
| Water Heater Features | Digital Display,Wall Mounted |
| Certifications and Listings | ETL Listed |
| Product Width (in.) | 7.5 in |
| Water Connection Size (in.) | 1/2 in |
Reviews:
It works fine, but it arrived in a shipping box with no manufactruer box inside, just the water heater. One of the dials has come lose and I had to screw it back on. There was no manual. There was no power cord, but it may not have come with one ( I couldn’t tell you since I didn’t get a box or a manual). There was water inside the unit. I think someone must have gotten it before me and then returned it and factory pure didn’t notice- that or the falsely sold me a used unit. I went ahead and installed it, though, because I had already opened up my water line and removed the old unit. If anyone from factory pure is reading this, I’ll forgive you for a fifty dollar partial refund- that’s about what I’d have expected to save by buying used.cade j.
As for the breaker tripping in other homes, as a licensed electrician of 26 years, I would advise you to take an amperage reading during operation. Most home owners do not have multi meters with an amp clamp so that could be difficult I understand. If the heater is not drawing over 55 amp during operation you may have a defective circuit breaker, it happens. Try replacing your breaker. If the heater is drawing over 55 amps ther is a problem with the heater.Andy A.
7. Bosch 4 Gal. Mini-Tank Electric Water Heater
Product Details:
Get hot water where it's needed, when it's needed with the bosch es4 tronic 3000 t electric water heater. this 4-gallon capacity point-of-use mini-tank fits right under your sink and provides a practical and effective solution to your hot water needs. this smaller model can be plugged right into a 120-volt outlet with the 36-37"cord, or can be installed in-line with a larger hot water source to provide "on-demand"use. the glass-lined tank offers great insulation and added durability, while the heater's fast recovery rate eliminates long waits for hot water. an external dial allows you to easily control the temperature range, and the temperature-and-pressure relief valve enhances your safety. the es4 tronic 3000 t from bosch has a sleek and attractive exterior design that blends in seamlessly with existing dcor when installed in a visible location, making this heater a great option in any room. water heater measures "h x "l x 13.5"d and weighs 17.3 lbs.
Specifications:
| Recovery at 90 Degree Rise (gph.) | 6.8 |
Reviews:
Should have done this a lot sooner. Now instead of having to deal with cold water at the kitchen sink for over a minute, we have nice hot water in 2-3 seconds. Got all of the parts (Sharkbite elbows and ball valves, along with a set of 1/2" FIP supply lines) here at Supply House except for a 2' piece of PEX I purchased locally. Most of the work for this project was running the dedicated circuit up from the basement in the sink cabinet. Even that wasn't that tough. Supply House has become my good to place for DIY plumbing and HVAC needsTom in NH
Purchased the four gallons tank instead of the two gallons. Hot water in 3 seconds instead of minutes. When I'm using a lot of hot water it starts to cool a little with the induction of cold water into the tank, but it's still more than just warm and heats back up soon when the hot water from my tankless heater reaches the faucet. By then the tank is refilled with hot water and if someone comes behind me, they have instant hot water also instead of having to wait for the tank to heat up again. LOVE IT!!!Hot and Happy
Well made little water heater. Perfect for under sink or point of use. This is the fourth I've had. Most important thing is to open it up and check the anode rod. Every year or two. It's not as hard as some people keep complaining about. Just keep it in mind when you initially install the heater. When that rod deteriorates and is gone, the heater WILL fail and leak.wrknmn
8. Ecosmart 27 Tankless Electric Water Heater
Product Details:
Ecosmart eco 27 is a 27-kilowatt tankless electric water heater ideal for providing hot water for apartments, condominiums, townhomes and other whole home applications. it can provide between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature. to select the best solution for your hot water needs, please refer to the sizing guide. with ecosmart you will be happier knowing the warm water you expect is available endlessly, consistently, and on-demand, allowing you to reduce your water and energy waste. now that feels warm all over! ecosmart – sharing the warmth.
Specifications:
| Assembled Depth (in) | 3.75 in |
| Assembled Height (in) | 18 in |
| Assembled Width (in) | 17 in |
| Assembled Weight (lbs) | 13.75 lbs |
| Item is Shipped at this Packaging Level | Y |
| Packaging Depth | 6.5 IN |
| Packaging Height | 19.75 IN |
| Packaging Width | 19.5 IN |
| Package Weight | 14 |
| Package Weight UOM | LB |
| Net Packaged Quantity | 1 EA |
| Water Heater Style | Tankless |
| Manufacturer Warranty | Limited Lifetime Warranty |
| Commercial / Residential | Commercial/Residential |
| Flow Rate @ 45°F Rise | 4.29 gpm |
| Flow Rate @ 77°F Rise | 2.39 gpm |
| Gas or Electric | Electric |
| Temperature Pressure Relief Valve (TPR) | No |
| Water Connection Size | 3/4" NPT |
| Height | 17 in |
| Width | 18 in |
| Weight | 13.75 lbs |
| Maximum BTU | 92127.834 BTU |
| Amperage (A) | 112.5 A |
| Voltage (V) | 240 V |
| Wattage | 27000 W |
| Energy Factor | 99.8 |
| ADA Compliant | Yes |
| CSA Certified | Yes |
| ETL Listed | Yes |
| UL Listed | Yes |
Reviews:
Like all of the 1 star ratings, my unit failed after about a year. It began leaking which caused it to short out. When I called the customer service, they asked for pictures of the leak and the heating elements. They immediately blamed the leak on me for not maintaining the unit. After I prove I did they asked me to send a video of the unit tripping the breaker which made no sense considering the unit was leaking water. In the end they recommended I re-solder the hole. Really?! So, for the sake of having hot water in the middle of winter, I do. Nine months later another hole appears and the exact same issue occurs. This time I demand a replacement after once again being blamed for the issue. After they run out of excuses on why it happened they then say I never registered my warranty, which I did. How in the world do I prove that I registered my warranty when the same people I registered it with claims I didn't? This product has NO support if and when it fails. STAY AWAY FROM THIS COMPANY!! Buy a better unit for a little more money AND keep all of the warranty information just in case.Andre'
To use this unit you will need to have an electrician bring in 3 high voltage lines into your home. $$$$. Any time you use the unit all the lights in the house flicker. After months of that annoyance I contacted dealer and was given a new control panel that I had to install myself. It solved the problem for a couple months then back to the flickering. Two years later the unit just stopped working. Plumbing service call told me I needed another new control panel. Now company says I don’t have lifetime warranty because I didn’t send in warranty card. They claim That they sent me replacement last time as a courtesy. This company is so short sited, they probably paid staff to argue with me more than it would have cost to replace the part. I bought a new part and had it installed…..back to the flickering lights. And do not buy this thinking you will cover the cost with savings. I’ve seen no difference in my electric bills. Read some other reviews. It’s not just the control panel that is garbage.Val
The first couple of months this product was awesome. Water was super hot and was easy to adjust. Then we noticed the water would not get as hot. Adjusted temperature on unit to 140 degrees, removed the filter off end of kitchen sink and nothing happened. Went through the virtual tech guide multiple times and found heating element was out. Tech support shipped a new one. Installed it, no change. Call back and was told you have to soak the heating elements in vinegar for 2-3 hours every six months. Reluctantly did it, no change. Even had it worked you should not have to do maintenance like this on a product not even a year old. Have had experience with other tankless heaters and never had to do maintenance. I've requested a supervisor call me 3-4 times and have yet to receive a call back. This has been going on for two months. Do not go with this product. Product quality is poor and tech support is as well.Daniel Andrews
9. Stiebel Eltron Tempra 24 Plus Electric Tankless Water Heater
Product Details:
Stiebel eltron tempra 24 plus water heater is compared to a conventional electric tank water heater, a water heater will typically use 15-20% less energy, although savings can be substantially higher depending on usage habits. conventional electric tank water heaters continually store hot water and as a result lose 15-20% of the total energy they consume to the environment around them. this is called standby heat loss.
Specifications:
| Amperage (amps) | 100 A |
| Application Type | Residential |
| Electricity Phase | Single Phase |
| Finish Family | Gray |
| Flow Rate @ 35°F Rise (gallons/min) | 4.68 gal (US)/min |
| Flow Rate @ 45°F Rise (gallons/min) | 3.64 gal (US)/min |
| Flow Rate @ 55°F Rise (gallons/min) | 2.98 gal (US)/min |
| Flow Rate @ 65°F Rise (gallons/min) | 2.52 gal (US)/min |
| Fuel Type | Electric |
| Indoor/Outdoor | Indoor |
| Maximum Temperature (F) | 140 °F |
| Minimum Activation Rate (gpm) | 0.5 |
| Minimum Temperature (F) | 86 °F |
| Number of Elements | 2 |
| Number of Showers | 1-2 |
| Pack Size | 1 |
| Required Volt Connection | 240 volt |
| Uniform Energy Factor | 0 |
| Water Heater Features | Overheat Protection,Wall Mounted |
| Certifications and Listings | CSA Listed,ETL Listed,UL Certified |
| Product Width (in.) | 16.625 in |
| Water Connection Size (in.) | 3/4 in NPT |
Reviews:
I was hoping for so much from this product. Yesterday I took such a hot shower during lunch and then that evening when I gave my daughter a bath, it only came out lukewarm. My shower today was borderline cold. Tomorrow it may be hot again. I live in Northern VA and would not recommend this product. It ruins the experience of our new bathroom remodel. There's nothing worse than remodeling your bathroom to your dream bathroom and hearing your wife say, well that bath wasn't relaxing since she couldn't get hot water.ChristianMC
We purchased this unit about 1 month ago, replacing a Natural Gas water heater with 40g tank. The savings in space, and the removal of the fossil fuel device were our key drivers for this purchase. Our Electric bill has increased significantly, by about 50%, but because we never run out of hot water, showers tend to be longer. And now we can actually fill our tub with hot water without boiling extra water on the stove, so this also has increased our usage. There is an issue with temperature stability, when a toilet is flushed or other demand for water is turned on, the temperature swing is very noticeable. I have added a shower temp gauge, and have seen the temp drop from 42c to 39c when a toilet is flushed, it takes about 10-15 seconds to recover, and likewise, when the water demand drops, the temp goes up from 42c to 44.5c for several seconds. This shower valve has a pressure regulated flow control, so changes in the water will take some time to correct. Pros: Save on Space, endless hot water, retired fossil fuel appliance, not storing heated water we aren't using. Cons: High electricity costs, temperature changes when pressure changes for several secondsChris
Don't buy it…it's terrible,I bought the tempra24 plus from home depot, I installed all specified wires and circuits so it would work properly and efficiently but this this is horrible… my electric and water bill did go down even more than I had Anticipated but hate it…No constant temperature what so ever. I'm getting it removed and getting one installed by a professional.. the tempraplus was a waste of moneyBrian Lackie
10. Rheem Rtex-13 Professional Classic Electric Tankless Hot Water Heater
Product Details:
Rheem rtex-13 electric water heater – provides easy hot water in your household the rheem 13kw tankless water heater provides amply heated water for your entire household. this unit permits reduced power consumption with 99.8% energy efficiency factor. the compact profile has a small footprint that while permitting an easy installation saves a lot of space. the included automatic thermostat keeps the water at a desired temperature. with a robust copper element, you can instantly heat the water for your entire household.
Specifications:
| Operating Voltage | 240V AC |
| Phase | Single |
| Cold Inlet Size | 1/2 in |
| Maximum Flow Rate | 4.8 gpm |
| Minimum Flow Activation | 0.3 gpm |
| Overall Depth | 3.63 in |
| Overall Height | 12.63 in |
| Overall Width | 8.25 in |
| Power Consumption | 13,000 W |
| Adjustable Thermostat | Yes |
| Current | 54 A |
| Environment | Indoor |
| Market | Residential |
| Control Type | Dial, Digital Display with Keypad |
| Cord Conductor Gauge | 6 AWG Wire |
| Default Temperature | 120 Degrees F |
| Element Material | Copper |
| Includes | 1/2 in NPT Adapters |
| Maximum Water Pressure | 150 psi |
| Minimum Water Pressure | 25 psi |
| Mounting Type | Wall Mounting |
| Water Connection Location | Side |
Reviews:
i had it professionally installed and its keeps popping a fuse and stops working all the time . i think it finally completely failed after 1 years of use only and 900 later. i home RHEEM will send me replacement as its under warranty. but seems liek its one of the worse ones to have. all bad ratings. i would like to upgrade to a better one.asta
11. Stiebel Eltron Dhc-E 12 Electric Tankless Water Heater
Product Details:
Stiebel eltron has been a world leader in advanced water heating technology for almost 90 years. our engineering excellence and high-quality manufacturing results in products fulfilling the highest expectations of performance & reliability. dhc-e tankless models are 99% efficient, heating water instantaneously and endlessly and, unlike tank water heaters, have no stand-by energy losses. no venting is necessary. the compact european design saves space, allows installation with the unit visible and gives the flexibility to install in the best location. a dhc-e 12 is ideal for residential and commercial point-of-use sink applications and single-shower whole-home use. it can be easily removed from a seasonal cabin or cottage for over-wintering. the dhc-e 12 is electronically controlled and can be set to deliver water at the temperature desired. the number of sinks a dhc-e 12 can supply depends on the incoming cold water temperature, the water flow through the unit, and the supply voltage.
Specifications:
| Item – Water Heaters | Electric Tankless Water Heater |
| Water Heater Design | Point-of-Use |
| Water Heater Application | Undersink |
| Commercial / Residential | Commercial |
| Watts – Water Heaters | 9000/12,000 |
| Amps – Water Heaters | 50 |
| Voltage – Water Heaters | 208/240 |
| Min. Flow Activation | 0.37 gpm |
| Phase – Water Heaters | 1 |
| Temp. Range – Water Heaters | 86 Degrees to 140 Degrees F |
| Temp. Rise @ 8.0 GPM | 8/10 Degrees F |
| Wire Size | 6 AWG |
| Residential / Commercial | Commercial |
| Temp. Rise @ 1.5 GPM | 41/55 Degrees F |
| Temp. Rise @ 2.5 GPM | 25/33 Degrees F |
| Temp. Rise @ 6.0 GPM | 10/14 Degrees F |
| Temp. Rise @ 2.5 GPM – Water Heaters | 25/33 Degrees F |
| Pressure Range | 150 psi |
| Watts | 9000/12,000 |
| Elements | Copper Sheathed Housed in Cylinder |
| Amps AC | 50 |
| Temp. Rise @ 4.0 GPM | 15/20 Degrees F |
| Phase | 1 |
| Mounting | Vertical |
| Temp. Range | 86 Degrees to 140 Degrees F |
| Water Connection | 3/4" NPT |
| Voltage | 208/240VAC |
| Hot Outlet Type | NPT |
| Operating Voltage | 208/240V AC |
| Power Consumption | 12,000 W |
| Minimum Flow Activation | 0.26 gpm |
| Hot Outlet Size | 3/4 in |
| Cord Conductor Gauge | 6 AWG Wire |
| Current | 50 A |
| Environment | Indoor |
| Adjustable Thermostat | Yes |
| Cold Inlet Size | 3/4 in |
| Market | Commercial, Residential |
| Temperature Range | 86 Degrees F to 140 Degrees F |
| Element Material | Copper |
| Mounting Orientation | Vertical |
| Mounting Type | Wall Mounting |
| Maximum Water Pressure | 150 psi |
| Cold Inlet Type | NPT |
| Overall Dimensions – H x W x D | 14.19 in x 7.88 in x 4.13 in |
| Application | Bathrooms, Break Rooms, Utility Sinks |
| Country of Origin (subject to change) | Germany |
Reviews:
Easy to install and seems to work well so far. Water is hot at the tap end which is a good thing.Reviewed by Heater Shop customer
I bought this tankless water heater several years ago to put in a trailer house at the lake. It worked so well that I bought a second one for a houseboat. I read many reviews on different brands and decided on the Stiebel Eltron after researching. I have been completely satisfied and am glad that I chose this particular brand. #sweepstakesBG
12. Ecosmart Eco18 Electric Tankless Water Heater – 18 Kw – 240 V
Product Details:
Water heaters tankless electric configured for climates where incoming water temperature is 62 degrees f and above. capable of heating over 2.5 gpm. digital temperature control allows temperature settings in 1 degree increments. voltage: 240, single phase, 18 kw, amperage draw: 75 amps,required breaker: 2 x 40 dp, required wire: 2×8 awg, pipe fittings: 3/4" npt, dimensions 18" x 14" x 3.75".
Specifications:
| Packaging Depth | 6.25 IN |
| Packaging Height | 19.5 IN |
| Packaging Width | 16.25 IN |
| Package Weight | 11 |
| Package Weight UOM | LB |
| Net Packaged Quantity | 1 EA |
| Water Heater Style | Tankless |
| Manufacturer Warranty | Limited Lifetime Warranty |
| Commercial / Residential | Commercial/Residential |
| Flow Rate @ 45°F Rise | 2.86 gpm |
| Flow Rate @ 77°F Rise | 1.6 gpm |
| Gas or Electric | Electric |
| Temperature Pressure Relief Valve (TPR) | No |
| Water Connection Size | 3/4" NPT |
| Height | 18 in |
| Width | 14 in |
| Weight | 11.25 lbs |
| Maximum BTU | 61418.556 BTU |
| Amperage (A) | 75 A |
| Voltage (V) | 240 V |
| Wattage | 18000 W |
| Energy Factor | 99.8 |
| ADA Compliant | Yes |
| CSA Certified | Yes |
| ETL Listed | Yes |
| UL Listed | Yes |
Reviews:
Specifically this is better than my previous 21kw tankless. Lower flow rate cut-on (was 0.085 to 0.025). All metal/aluminum housing; plastic housing on old unit was melting from prolonged internal heat. Would recommend rubberized / insulated internal heat windings prolong life expectancy. Not an engineer, but just a thought. Love the product though…..samkson
Needed this for extra boost for a walk-in tub. My wife's 75 gallon tub required more than our electric water heater could handle. At first I thought this would handle the job alone to give her quick warm water. Wrong. Even though I live in mid-Florida with supply temperature at 65 degrees the flow capacity was not enough. I could have gone with a larger unit but i would have need a bigger electric panel. Yikes! So, I kept my electric heater and reinstalled it as a preheater for the Eco. Problem solved. Plenty of capacity now with the preheater set at 100 degrees. I really thought I could do away with my original water heater and utilize that big space. So if you need this for a really big tub or demand get the bigger one if you have the electrical capacity.wbsmgparts
13. Ecosmart Eco 11 Electric Tankless Water Heater
Product Details:
Ecosmart eco 11 is ideal for handwashing in cooler climates and are perfect for a bathroom, small sink or office breakroom. in warmer climates, eco 11 can provide continuous hot water at up to 2.6 gallons per minute, supporting a bathroom shower or kitchen sink. this model has a digital display showing output temperature and can be adjusted in 1-degree increments. ecosmart water heaters are durable, compact and easy to install.
Specifications:
| Assembled Depth (in) | 3.75 in |
| Assembled Height (in) | 12 in |
| Assembled Width (in) | 9.75 in |
| Assembled Weight (lbs) | 7 lbs |
| Item is Shipped at this Packaging Level | Y |
| Packaging Depth | 6.75 IN |
| Packaging Height | 13.5 IN |
| Packaging Width | 10.25 IN |
| Package Weight | 7 |
| Package Weight UOM | LB |
| Net Packaged Quantity | 1 EA |
| Water Heater Style | Tankless |
| Manufacturer Warranty | Limited Lifetime |
| Commercial / Residential | Residential |
| Flow Rate @ 45°F Rise | 1.97 gpm |
| Flow Rate @ 77°F Rise | 1.15 gpm |
| Gas or Electric | Electric |
| Temperature Pressure Relief Valve (TPR) | No |
| Water Connection Size | 1/2" CF |
| Height | 12 in |
| Width | 9.75 in |
| Weight | 7 lbs |
| Maximum BTU | 44357.846 BTU |
| Amperage (A) | 57 A |
| Voltage (V) | 240 V |
| Wattage | 11 kW |
| Energy Factor | 99.8 |
| ADA Compliant | Yes |
| CSA Certified | Yes |
| ETL Listed | Yes |
| UL Listed | No |
Reviews:
Nicely made unit. Clean lines, nice display, lightweight, easy to mount. You'll need a terminal box to wire it up since it comes with it's own pigtail cable (they don't want you to open up the case since it will void it's warranty, apparently; multi breaker units might be different), so I bought an inexpensive 60 amp A/C unit type cut-off switch box with a pull out switch. Just mount it near the heater on the wall and run your 6 gauge wire to it from your breaker panel. I just wish they had included adapters so that you can plumb it to 3/4" piping, so you'll have to buy your own if you wish to connect it to your existing 3/4" pipe. I had trouble using pipe dope (maybe it was too old or the wrong kind?), so I switched to Teflon tape (5 layers) on each fitting and that did the trick. Love the easy to turn dial, press to turn on/off feature and easy to read digital display which comes on when hot water is called for. Now, we'll see how long it lasts before some type of failure…scottcollins
so just got this unit instated and replaced 6 years old Titan (220watts)that just hasn't been getting up desire temperature lately. read bunch of reviews and this unit had better ratings . it was easy to switch from old unit as water and power hookups are almost the same . tested and it want keep up with fully open single sink , I had to reduce water flow at inlet pipe . did not measure but it seams im getting aprx. 2 gal a minute. no way to use 2 outlets at same time. btw we are in coastal northern Washington stateromanles
14. Electric Scr2 Titan N-120 Tankless Water Heater
Product Details:
Titan electronic tankless water heater has been around for over 35 years and is ideal for a wide range of applications. these models could be used anywhere from point of use to whole entire house (all depending on ground water temperature going into the unit). they are energy efficient and therefore you will be saving on energy cost. the electrical specifications are based on 220-volt/240-volt be sure to check specifications on unit being purchased. voltage, amperage, breaker and wire may vary depending on local electrical standards. consult a professional plumber and electrician for guidance. remember, that any adjustments made on your unit will take seconds to reach point of use. water temperature from 105°f to 120°f is adequate for all practical purposes.
Specifications:
| Power Source | Electric |
| Energy Star Certified | Yes |
| Minimum Temperature | 55 °F |
| Height | 10" |
| Commercial or Residential | Residential or Commercial |
| Water Connection Location | Side |
| Width | 7" |
| Watts | 11.8 W |
| Maximum Temperature | 70 °F |
| Volts | 220 V |
| Maximum Pressure | 150 psi |
| Water Connection Size | 1/2" |
| Depth | 3" |
| Product Type | Tankless Water Heater |
| Tankless | Yes |
| AMPS | 54 amps |
| Warranty | 1 Yr |
| CSA Listed | No |
| Each Weight | 8.000 LB |
| Velocity | B |
| Hazardous Material | No |
Reviews:
200 amp service. This thing pulling 66 amps . Heat pump pulling 90 amps . If wife cooks, cleans and drys cloths, I think it wont work. Lights dim now with heat pump on and water heater on. Just my thoughts . So now I have it sitting on a shelf collecting dust. But I really cant blame titan. I should have done more than an hour of home work before ordering.metalpayed
15. Ecosmart Eco 36 36kw 240v Electric Tankless Water Heater
Product Details:
Easy to maintain, easy-to-replace heating elements. activation flow is 0. 3 gpm on demand, endless hot water and copper and stainless components designed for efficiency, durability and easy replacement. lifetime for residential use. breaker recommended 4 x 40 amps dp 6 gpm tank less water heater provides on-demand, endless hot water.
Specifications:
| Capacity | 6 Gallons |
| Power Source | Corded Electric |
| Item Dimensions LxWxH | 3.6 x 21 x 17 inches |
| Voltage | 240 Volts |
| Heat Output | 36 Kilowatts |
| Style | ECO 36 |
| Product Dimensions | 3.6 x 21 x 17 inches |
| Country of Origin | USA |
| Is Discontinued By Manufacturer | No |
| Amperage Capacity | 150 Amps |
| Item Package Quantity | 1 |
| Included Components | Rough Plumbing, Water Heaters, water-heaters |
Reviews:
16. Ecosmart 2.5 Gal. Electric Water Heater
Product Details:
The ecosmart 2.5 gallon mini tank water heater saves water by eliminating the wait for hot water to reach the faucet. simply tap into the water line and install the heater directly at the sink. no need for costly recirculating lines and pumps. and when you want to eliminate the wait for hot water but need more volume, install the heater in-line with a larger hot water source, such as a tankless heater or a storage tank heater. lightweight and compact, this unit plug into a standard 110 volt outlet.
Specifications:
| Tank Style | Compact |
Reviews:
Similar to ones I found in Lowes, but less than half the price. Easy to install, and seems to work finetybeend
17. Stiebel Eltron Electric Tankless Water Heater Mini 6
Product Details:
The mini 6 heats water instantaneously as it flows through the unit. stand by heat losses are completely eliminated. the efficient heating elements are controlled by a simple flow switch. additionally, the mini 6 water heater is equipped with a safety high-limit with manual reset. the combination of meticulous german engineering and the best available materials ensure that every mini 6 is of the highest quality and designed for many years of trouble-free service. the mini 6 can deliver warm or hot water to a single point-of-use, usually a hand wash or utility sink. requires 208/240 electric service professional installation recommended 23.8 amps at 240v, 20.6 amps at 208v flow controls and faucet aerators are highly recommended in conjunction with tankless water heaters. all aerators are designed to fit most common faucets. no pressure relief valves, drains, or circulating pumps are needed. extremely compact design saves space major energy savings unlimited supply of hot water proven reliability sleek design is appealing and can be mounted in plain sight can be mounted with fittings pointing up or down only 7.5′′ x 6.5′′! the stiebel eltron mini 6 tankless water heater is ideal for restrooms or kitchenettes in an office or commercial / industrial setting.
Specifications:
| Height | 6.00 |
| Length | 10.00 |
| Width | 9.00 |
| Hazardous Material | No |
| ECCN | EAR99 |
Reviews:
Montage easy, allerdings brauchts ne 2.5mm Stromleitung und 25 Amperesicherung Das Wasser ist gut warm aber nicht heiß.
Würden wir immer wieder kaufen! Das schwierigste war es den Stecker zu montieren, weil es sich um eine 4mm² Zuleitung handelt. Ansonsten sind wir sehr zufrieden und der 16A Sicherungsautomat hält. Wir haben endlich warmes Wasser in der 2t-Küche! Für heißeres Wasser würden wir mind. einen 11KW DLEH empfehlen.Der Elektrische
18. Rheem Electric Tankless Water Heater Rtex-27
Product Details:
Rheem rtex-27 electric tankless water heater – get unlimited supply of hot water with the rheem 27kw electric tankless water heater cold showers are a thing of the past. this space-saving and stylishly designed set is 99.9% energy efficient and comes with a digital temperature control. the heater is easy to install and helps you save water.
Specifications:
| Power Source | Electric |
| Item Dimensions LxWxH | 4 x 18 x 19 inches |
| Voltage | 240 Volts |
| Maximum Flow Rate | 7 Gallons Per Minute |
| Maximum Temperature | 92 Degrees Fahrenheit |
| Heat Output | 92 Degrees |
| Style | Indoor Installation |
| Product Dimensions | 4 x 18 x 19 inches |
| Country of Origin | USA |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Type of Bulb | LED |
| Included Components | Rheem RTEX-27 Residential Tankless Water Heater |
Reviews:
My old 80 gallon hot water tank was on it's way out so I did research on a replacement. I could replace the tank with another 80 gallon hot water heater (no thanks), I could go with a hybrid 80 gallon hot water heater (not bad), or I could go with a tankless system (ideal). There are pros and cons to each but I ended up choosing the Rheem 27kw tankless hot water heater. I read good and bad reviews on this system but I have nothing but great things to say. I had to have an electrician come and install an additional (2) 40 amp breakers and 8/2 wire for around $450 so I had a total of 3 lines hooked up to the system (essentially 1 line/breaker for each heating element). At first I was getting only luke warm water so I called Rheem tech support and the advisor was extremely helpful and told me to check a few things. Within 10 minutes it was working perfectly. (The issue had to do with the install, not the product). Be sure you're getting 240V to each element before your electrican leaves. Nevertheless, we initially set the temp to 140 and was way too hot. We dialed it down to 125 and it is perfect. We have 4 full bathrooms, kitchen, laundry, etc. We can easily have 3 showers on simultaneously. Best part is the hot water never runs out and ultimately saves you money. 2 thumbs up!Dindrunas
Works great. No problems. Great value.Peter Z
19. Black & Decker 27 Kw 5.3 Gpm Electric Tankless Water Heater
Product Details:
Unlike conventional tank water heaters, which constantly consume energy to keep your water hot 24/7, this state-of-the-art, digital technology will instantly reduce your energy consumption and save you money on energy costs simply by heating water on demand. the unit does not require any gas lines or venting, and the compact design allows you flexibility to install virtually anywhere – in a cabinet, closet, garage, basement, etc. you can be sure to earn some precious space by installing this unit! (important: inlet temps vary by location and seasonality. selecting the right water heater depends on your incoming water temperature, flow rate, and desired output temperature.
Specifications:
| Voltage (Volts) | 240 |
| Bluetooth Compatibility | No |
| Amps Required for Unit Only (Amps) | 112.5 |
| Smart Compatible | No |
| Width (Inches) | 4.53 |
| Point of Use | No |
| Maximum Gallons per Minute | 5.8 |
| Wire Size (Gauge) | 8 |
| Major Appliances Supplied Simultaneously | 5 |
| Wi-Fi Compatibility | No |
| Weight (lbs.) | 15 |
| Hybrid Heat Pump Technology | No |
| Mobile Home Compatible | Yes |
| Commercial/Residential | Commercial/Residential |
| Depth (Inches) | 17.13 |
| Installation Location | Wall mount |
| Height (Inches) | 14.76 |
| Household Amperage Required (Amps) | 120 |
| Power Output (Kilowatts) | 27 |
Reviews:
This heats the water great in the summer time, a little cooler in the winter time when the ground is cooler. Make sure you measure the distance from you furthest shower to you water hear location before purchasing, to ensure that your water heater will heat the water efficiently.Anonymous
20. Ecosmart Eco 11 Electric Tankless Water Heater, 13kw At 240 Volts With Patented Self Modulating Technology (A)
Product Details:
Ecosmart eco 11 electric tankless water heater, 13kw at 240 volts with patented self modulating technologydetails:this smart technology electric tankless water heater is configured as a "whole home" model for climates where incoming water temperature is 67f and above. this model is well suited for heating up to 2-gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67f and an output setting of 105f. digital temperature control allows you to set your temperature in increments of 1 degree. this model can also be used in colder climates as a point of use for a sink or other low flow application. all tankless water heaters are sized based on flow rate and temperature rise, and there is a direct relationship between the two. so if used in a cold area requiring a high temperature rise, it will be more limited in the amount of fixtures (gallons per minute) it can heat at one time compared to a warmer climate.item condition:an item in perfect working condition. instructions are included.
