Best Electric Tankless Water Heater For Whole House (2024 Update)
Having an endless supply of hot water is one of life’s simple pleasures. But if your current water heater isn’t keeping up with your household’s demands, it may be time for an upgrade. Choosing the best electric tankless water heater for your whole house is an important decision that requires some research.
Before buying a new unit, ask yourself a few key questions. How many bathrooms and fixtures need a hot water supply? What’s the groundwater temperature in your area? Do you want a unit for just one application, like a remote bathroom, or the entire house? Understanding your home’s hot water requirements and patterns of use will help narrow down the right size and style.
You’ll also want to consider available electrical service. Tankless heaters require a lot of power, so your electrical panel may need upgrading. Specify the voltage and breaker amperage to size the heater correctly. Where will the unit be located? Condensing tankless models need to vent exhaust outside.
Installation costs can add up, so accurately estimating the work needed to accommodate the new heater is crucial. And don’t forget local building codes and permits. With some forethought, you’ll be well on your way to endless hot water. Read on to explore top electric tankless water heater options for whole house use.
10 Best Electric Tankless Water Heater For Whole House
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Ideal for providing hot water on demand for an entire home with electric power source.
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The product is ideal for preventing scale build-up on hot water heaters and boilers.
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This tankless electric water heater is ideal for providing hot water on demand in residential or commercial settings.
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Ideal for providing hot water on demand for a whole house or point of use with self-modulating technology.
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The product is ideal for heating water for an entire household without the need for a large tank.
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This product is ideal for heating water on demand for point of use applications.
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This product is ideal for providing hot water to an entire house without the need for a large storage tank.
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This product is ideal for providing hot water in both indoor and outdoor settings with a high flow rate.
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This product is ideal for providing hot water without the use of a tank, making it energy-efficient and space-saving.
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This product is ideal for providing hot water through an electric water heating system.
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1. Ariston Aures Pro 36kw 240-Volt 7.02 Gpm Whole Home Electric Tankless Water Heater
This tankless water heater is a powerful and efficient solution for providing endless hot water throughout your entire home. With its compact design, it saves space and allows for installation flexibility, giving you hot water exactly where you need it.
The self-modulating power control and smart control logic digital display ensure a steady output temperature, so you can enjoy a consistent and comfortable shower experience. The heating elements are made of dependable copper to resist corrosion and extend the lifespan of the unit to up to 20 years.
Unlike traditional water heaters that store and constantly heat water, this tankless water heater only uses energy when hot water is needed. This means you'll have an unlimited hot water supply without wasting energy and money on heating and storing unused water.
With its reliable performance and energy-saving features, this tankless water heater is a smart investment for any home.
2. Rheem Tankless Water Heater & Scale Inhibitor System
Upgrade your water heating system with this advanced external digital thermostatic control with LED display that provides +/- 1 degree accuracy. The most advanced self-modulation feature automatically adjusts power to meet hot water demand, ensuring continuous hot water supply.
This product features durable copper immersion with two heating elements that are field serviceable, ensuring a long-lasting and reliable performance. With a flow rate of up to 4.4 GPM, this external digital thermostatic control with LED display is perfect for households of all sizes.
Installation is made easy with its bottom 3/4 inch NPT water connections, while the LED display makes it easier to monitor and adjust the temperature. With its advanced features and durable construction, this product is a must-have for anyone who wants a reliable and energy-efficient water heating system.
Product 2: Water Heater Scale Inhibitor
Protect your hot water heater and extend its lifespan with this water heater scale inhibitor that helps inhibit scale build-up in both standard (gas or electric) and tankless styles, as well as boilers. It also helps maintain the efficiency of your water heater by inhibiting scale build-up on heating elements.
This product comes with polyphosphates that help protect hot water using appliances, pipes, and downstream plumbing fixtures such as faucets and showerheads. It also has easy-to-replace 3M Aqua-Pure AP431 replacement water cartridge, making maintenance easier.
The high flow rates of 3/4 inch NPT inlet/outlet connections allow for easy installation and high flow rates that are rated for up to 10 GPM. The system is designed to be installed on the cold water line feeding the water heater, ensuring that the water heater is well-protected from scale build-up.
Invest in this water heater scale inhibitor and experience the benefits of having a well-protected and efficient water heating system.
3. Envo Atami 24 Kw 4.5 Gpm Tankless Electric Water Heater
This water heater is a top-of-the-line product that offers a range of essential features and specifications. With a power requirement of 3 x 40 amp double pole breakers, this unit needs 24000 watts of power at 240v to function optimally. It supplies hot water to your kitchen faucet, bathroom faucet, and shower, making it a perfect fit for your home.
One of the most significant benefits of this water heater is that it saves energy. It heats water only when you need it, eliminating the need for preheating and standby heat loss. Additionally, it saves space as it has no tank, making it a compact design that fits perfectly in tight spaces like cabinets and closets.
This water heater is built to last longer than conventional tank units, thanks to its no-limescale build-up feature. It also has an automatic memory function that remembers your preferred settings from the last use.
This ETL certified and listed water heater has a power rating of 24KW / 240V / 60Hz / 3x40amp Breakers, making it a reliable and safe option for your home. It also has over-temperature protection that cools down the water to a safe level if it gets too hot.
Finally, the flowing water and electrical system are separated, making it a safe and secure option for your home. With all these features, this water heater is an excellent investment for anyone looking for a reliable, energy-efficient, and space-saving option.
4. Ecotouch Tankless Hot Water Heater – Eco180b.
The ECO180B electric tankless hot water heater is a powerful and efficient solution for homes and businesses. With its 18kW smart heating system, it provides instant and endless hot water at 120℉ or higher in seconds, without any waiting time for preheating or temperature fluctuations during shower time. This makes it the perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, and more.
The self-modulation instant water heater adjusts the power input based on the current flow rate and temperature setting. This means that less power will be consumed when water flow is reduced, resulting in an ideal temperature instead of scalding hot water. This ensures a comfortable experience and excellent energy efficiency. With optimal energy efficiency of 98%, you can save considerable electric charge.
The electric tankless water heater 18kW comes with a digital display and touch control panel, making temperature setting an easy job. The useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, so you needn’t go through the hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.
Safety is a top priority for the ECO180B electric tankless water heater. It has been newly updated and applied with multiple protections, such as leakage protection, over heating protection, and auto stop. Every piece of the electric tankless water heater ECO180B goes through strict tests to ensure 100% safety. It is listed by ETL and qualifies for UL. The inner water and electricity lines are designed to run separately to avoid leakage risk and scale build-up. You can expect outstanding performance for years to come.
The sleek tankless water heater ECO180B is compact and can be installed anywhere point of use to avoid waste. It is ideal for shower, kitchen, bar, school, and hair salon. Please verify it is the right size for you: 18kW at 240V(only); dimensions 12.22" (W) x 17.25" (H) x 4.02" (D); plumbing connections: 3/4" NPT. In order to install the 18kW Tankless Water Heater, it requires 240V, 2X40AMP Double Pole Breaker, and 2X8AWG/2 wires with Grounding.
5. Titan Tankless N-210 Whole House Water Heater System
Looking for a reliable and energy-efficient solution to your hot water needs? Look no further than this amazing product! With its advanced technology and innovative design, this hot water system provides endless hot water for your entire home, ensuring that you never run out of hot water again.
Unlike traditional hot water systems that heat and store a limited amount of water, this product uses a tankless system that heats water on demand, providing instant and continuous hot water whenever you need it. This not only ensures that you have hot water whenever you need it, but also saves you up to 50% on your hot water bill, making it a cost-effective solution for your home.
With its compact and space-saving design, this hot water system is perfect for any home, whether you have a small apartment or a large house. Its easy-to-use controls and intuitive interface make it simple to adjust the temperature and settings to your liking, while its durable construction and high-quality materials ensure that it will last for years to come.
So why wait? Upgrade your home's hot water system today with this amazing product and start enjoying endless hot water and lower energy bills!
6. Sivuatek 18kw Electric Water Heater – Instant Hot!
Introducing the V7B-180 Electric Tankless Water Heater, a cutting-edge device that offers luxury and endless hot water with a powerful 18kW heating system. Its compact design makes it perfect for point of use installation anywhere in your home, providing hot water of up to 2.8GPM that's higher than 120℉ in seconds.
This Smart Tankless Water Heater is designed to optimize energy efficiency and save up to 50% on water heating costs. Unlike traditional tank water heaters, it doesn't waste any energy for preheating. Instead, it adjusts power input based on real-time flow rate and temperature setting, offering a comfortable and safe experience with a 99.8% energy efficiency rating. You can be sure that there will be no fluctuation in temperature even when flowrate changes.
This electric water heater is also incredibly safe and durable, featuring multiple protection devices such as leakage protection, dry heating protection, high temperature protection, and auto stop. The V7B-180 undergoes strict tests to ensure 100% safety and is listed by ETL. It's suitable for residential, restaurant, school, hospital, office, and other public facilities.
One unique feature of the V7B-180 Electric Tankless Water Heater is the specially designed heating chamber that runs water and electricity lines separately. This design offers several benefits over traditional water heaters, including no leakage, no inner corrosion, and minimized scale deposits. You can expect outstanding performance in years to come with nearly zero maintenance.
This Point of Use Water Heater is compact and designed for space-saving, with standard 3/4" NPT pipe fittings. It requires a 240V supply via two pieces of "40A Double Pole Circuit Breaker" and two sets of "8AWG/2 wires with Grounding." Before purchasing, please ensure that your circuit breaker panel meets these requirements.
7. Eemax Ex190tc 3-Gallon Series Two Whole House Electric Tankless Water Heater
The 3/4 inch NPT water connections located on the bottom of the unit make installation a breeze. With its compact design, this water heater saves valuable space without sacrificing functionality. The unit features thermostatic control for precise outlet temperature, ensuring that you always have the perfect water temperature for your needs.
Not only is this water heater easy to install, but it also boasts an impressive 99% energy efficiency rating. That's right – this unit is designed to save you money on your energy bills without compromising on performance. With bottom water connections and no T&P valve needed, you'll enjoy a hassle-free installation process.
Say goodbye to cold showers with this on-demand water heater. You'll never have to worry about running out of hot water again, thanks to its impressive 2 GPM flow rate. The temperature rise at 1.5 GPM is a toasty 87°F, ensuring that you always have hot water when you need it.
8. Instant Heat Tankless Water Heater: Indoor/outdoor
Introducing the Electric Tankless Water Heater – a powerful and efficient solution to your home's hot water needs. This advanced appliance operates at an impressive 240V AC, providing a reliable and consistent source of hot water for your daily needs.
With a single-phase operation, this water heater is designed to be easy to install and use. Its 3/4 inch cold inlet size allows for a seamless connection to your existing plumbing, while its compact design saves valuable space in your home.
You'll love the Electric Tankless Water Heater's impressive maximum flow rate of 4 gallons per minute. This means you can enjoy a steady stream of hot water for all your daily needs, from showering to washing dishes and doing laundry.
This innovative water heater is built to last, with high-quality materials and expert engineering ensuring it can withstand years of use. Plus, it's incredibly energy efficient, meaning you'll save money on your energy bills while enjoying the comfort and convenience of hot water on demand.
9. Eemax, Ha027240 Tankless Electric Water Heater, 18kw, 240 Volt
Looking for a product that is both durable and valuable? Look no further than this top-of-the-line product. Manufactured in China with the highest quality materials, this product is built to last and will provide you with years of use.
One of the standout features of this product is its durable, easily replaceable heating elements. These elements are made to withstand even the toughest conditions, ensuring that your product will continue to function at a high level for years to come.
In addition, this product features a copper heat exchanger with a brass top, which helps to prevent corrosion and ensures that heat is distributed evenly throughout the unit. The digital temperature display makes it easy to keep track of the temperature, while the control knob allows you to adjust the temperature in increments of 1 degree.
If you're looking for a reliable, high-quality product, this is the one for you. With recommended wire size of 3 x 8 AWG, you can be sure that this product will meet all of your needs and exceed your expectations. So why wait? Invest in this top-of-the-line product today and start enjoying all of its many benefits!
10. Iheat Stainless Electric Water Heater – 27kw
The tankless water heater being reviewed is a powerhouse that can easily handle 2 to 3 standard showers at once in the southern states where the incoming water temperatures are warmer. The Heat Pro-Performer is equipped with a state-of-the-art monitoring system that continuously collects real-time data from a range of sensors, up to 60 times per second, ensuring maximum efficiency and performance.
Thanks to its advanced software, the unit can be fully diagnosed without having to open it up. Simply insert a memory stick into a laptop or tablet, and the complete diagnostic report will be available. The Heat AHS27-D is equipped with a user-friendly touch screen display that allows you to easily set your desired temperature and even program certain maximum temperature settings.
With a 3/4 inch inlet and outlet, high flow applications are a breeze for the Heat Pro-Performer. This feature, combined with its outstanding performance, makes it an ideal choice for anyone seeking a reliable and efficient water heating solution.
Best Electric Tankless Water Heater For Whole House FAQs
Are there any maintenance or upkeep requirements for electric tankless water heaters used for whole house use?
Yes, there are maintenance and upkeep requirements for electric tankless water heaters used for whole house use. Regular maintenance ensures that the unit runs efficiently and lasts longer. Here are some maintenance tips for electric tankless water heaters:
1. Flush the unit annually: Over time, sediment and mineral buildup can affect the efficiency of the unit. Flushing the unit annually will remove any buildup and maintain its efficiency.
2. Check the filters: Electric tankless water heaters have filters that need to be cleaned or replaced regularly. Check the filters every six months to ensure they are clean and functioning properly.
3. Inspect the unit: Check the unit for any leaks, loose connections, or damage. If you notice any issues, contact a professional to repair them.
4. Check the thermostat: Make sure the thermostat is set to the desired temperature and functioning properly. If you notice any issues, consider replacing the thermostat.
By following these maintenance tips, you can ensure your electric tankless water heater runs efficiently and lasts longer. It is also important to read the manufacturer’s instructions and follow their recommended maintenance schedule.
Can an electric tankless water heater be used for both whole house use and point-of-use applications?
Yes, an electric tankless water heater can be used for both whole house use and point-of-use applications. However, the size and capacity of the unit will need to be taken into consideration.
For whole house use, a larger unit with a higher flow rate will be needed to ensure that there is enough hot water to meet the demands of multiple outlets throughout the home. A professional plumber can help determine the appropriate size unit based on factors such as the number of bathrooms and the size of the home.
For point-of-use applications, a smaller unit with a lower flow rate can be installed at each individual outlet, such as under the sink or in the shower. This can be a more energy-efficient option as it eliminates the need for hot water to travel through long pipes before reaching the outlet.
In either case, it is important to consider the electrical requirements of the unit and ensure that the home's electrical system can support the installation. It is also recommended to consult with a licensed professional before purchasing and installing an electric tankless water heater.
How do electric tankless water heaters compare to traditional tank water heaters in terms of energy efficiency?
Electric tankless water heaters are generally more energy efficient than traditional tank water heaters. This is because tankless heaters only heat water as it is needed, whereas tank heaters must constantly maintain a large volume of water at a set temperature. This continuous heating process results in a lot of energy waste and higher utility bills.
On the other hand, electric tankless water heaters only heat water when there is a demand for it, which means they use less energy overall. Additionally, tankless heaters have a longer lifespan than traditional tank heaters and are more environmentally friendly due to their energy efficiency.
However, it is important to note that electric tankless water heaters may have a higher upfront cost than traditional tank heaters. Additionally, the flow rate of hot water may be limited with tankless models, which could be a disadvantage for large households or commercial settings.
Overall, the energy efficiency benefits of electric tankless water heaters make them a compelling choice for many homeowners and businesses looking to save on energy costs and reduce their environmental impact.
How long is the expected lifespan of a high-quality electric tankless water heater for whole house use?
The expected lifespan of a high-quality electric tankless water heater for whole house use can vary depending on factors such as usage, maintenance, and the quality of the unit. However, on average, a well-maintained electric tankless water heater can last between 15-20 years. It's important to note that regular maintenance, such as flushing the system once a year, can help extend the lifespan of the unit. Additionally, choosing a reputable brand and model can also impact the longevity of the water heater. It's important to consider the initial investment in a high-quality electric tankless water heater as a long-term investment in your home's water heating system. With proper care and maintenance, a tankless water heater can provide reliable hot water for many years.
How many gallons per minute can the best electric tankless water heaters for whole house use provide?
The best electric tankless water heaters for whole house use can provide a range of gallons per minute (GPM) depending on the specific model and the temperature rise needed. Generally, the GPM can range from 4 to 8 GPM, but some high-end models can provide up to 11 GPM. It's important to note that the GPM will vary depending on factors such as the incoming water temperature, the desired output temperature, and the water flow rate. Additionally, it's important to choose a tankless water heater that is appropriately sized for your household's hot water demands. Consulting with a professional plumber or electrician can help ensure that you choose the right electric tankless water heater for your home's hot water needs.
What are some common advantages and disadvantages of electric tankless water heaters for whole house use?
Electric tankless water heaters have become increasingly popular in recent years, but like any other product, they come with their own set of advantages and disadvantages. Here are some common ones for whole house use:
Advantages:
1. Energy Efficiency: Electric tankless water heaters are highly energy-efficient as they only heat water when required, unlike traditional water heaters which store and heat water continuously. This can lead to significant energy savings and lower utility bills.
2. Space-saving: Tankless water heaters are compact and can be installed in smaller spaces, freeing up valuable floor space.
3. Longer lifespan: Electric tankless water heaters typically last longer than traditional water heaters, with a lifespan of up to 20 years or more.
Disadvantages:
1. Higher upfront cost: The initial cost of installing an electric tankless water heater is higher than traditional water heaters.
2. Limited hot water output: Electric tankless water heaters may not be able to keep up with high water demand, particularly in larger households.
3. Dependence on electricity: Electric tankless water heaters are dependent on electricity, which can be a disadvantage during power outages.
Overall, electric tankless water heaters are a great option for whole house use, particularly for those who prioritize energy efficiency and space-saving. However, it is important to consider the disadvantages before making a decision.
What are the key features to look for when selecting the best electric tankless water heater for whole house use?
When selecting the best electric tankless water heater for whole house use, there are several key features to consider.
Firstly, it's important to choose a model with adequate flow rate and temperature rise to meet the hot water demands of your household. This will depend on the number of people in your household and your typical hot water usage.
Secondly, consider the unit's efficiency rating, as this will impact your energy bills and overall cost savings. Look for models with a high energy factor (EF) rating.
Thirdly, consider the size of the unit and its installation requirements. Make sure you have adequate space to accommodate the unit, and that it can be installed in accordance with local building codes and regulations.
Fourthly, consider the durability and reliability of the unit, as well as the manufacturer's warranty and customer support.
Finally, consider any additional features that may be important to you, such as digital controls or Wi-Fi connectivity. By taking all of these factors into account, you can choose the best electric tankless water heater for your household's needs.
What are the top brands of electric tankless water heaters for whole house use?
There are several top brands of electric tankless water heaters that are suitable for whole house use. These brands include Stiebel Eltron, Rheem, Ecosmart, and Bosch.
Stiebel Eltron is a German-based company that has been in the business for over 90 years. Their electric tankless water heaters are known for their durability and energy efficiency. They offer a wide range of models, including those designed for whole house use.
Rheem is a well-known brand in the home appliance industry. Their electric tankless water heaters are highly rated for their performance and reliability. Rheem offers a variety of models, including those that are suitable for large homes with multiple bathrooms.
Ecosmart is a US-based company that specializes in energy-efficient water heating solutions. Their electric tankless water heaters are designed to provide hot water on demand while reducing energy consumption. They offer models that are suitable for whole house use.
Bosch is a German-based company that has been in the business for over 125 years. Their electric tankless water heaters are known for their performance and quality. Bosch offers a range of models that are suitable for whole house use, including those that are designed for colder climates.
What is the average price range of a high-quality electric tankless water heater for whole house use?
The average price range of a high-quality electric tankless water heater for whole house use can vary depending on the brand, size, and features of the unit. However, you can typically expect to pay between $500 to $1,500 for a top-of-the-line electric tankless water heater. It's important to note that while the initial cost may be higher than a traditional tank water heater, electric tankless models can save you money in the long run due to their energy efficiency and lack of standby heat loss. Additionally, some electric tankless water heaters may qualify for government rebates or tax credits, further reducing the overall cost. To ensure you get the best value for your investment, it's recommended to research and compare different models, read customer reviews, and consult with a licensed plumber to determine the right size and type for your household's hot water needs.
What is the installation process like for an electric tankless water heater for whole house use?
The installation process for an electric tankless water heater for whole house use can vary depending on the specific model and the layout of your home. Generally, the installation process involves shutting off the water supply and electricity to your old water heater, removing the old unit, and then mounting and connecting the new tankless unit according to manufacturer instructions.
It is important to note that because electric tankless water heaters require a high amount of power, they often require a dedicated circuit breaker and may need to be installed near the main electrical panel. Additionally, it is important to ensure that the new unit is properly sized for your household's hot water needs.
It is recommended to hire a licensed and experienced plumber or electrician to install your electric tankless water heater to ensure that it is installed correctly and safely. It is also important to follow all local codes and regulations for plumbing and electrical work.
