Best Electric Instant Hot Water Heater (2024 Update)
Having hot water available right away is a modern convenience many homeowners rely on daily. An electric instant hot water heater can provide this on-demand hot water for sinks, showers, and more without the wait of a traditional tank water heater. When researching your options for an electric instant hot water heater, there are a few key factors to consider first.
The heating capacity and flow rate are important to match to your household’s hot water needs. How many taps or showers need hot water at once? What is the groundwater temperature in your area? The heating elements in an electric instant hot water heater heat the water as it flows through, so sufficient power is needed for your desired flow rate and temperature rise. Also consider the available electrical service and wires – will an upgrade be needed to support the heater?
Installation location is another key consideration. The heater will need to be installed indoors close to the point(s) of use to deliver truly instant hot water. Is there sufficient space? Are electrical and plumbing connections available there? Can ventilation requirements be met? Thinking through these factors will ensure your new electric instant hot water heater performs as expected.
Do you need instant endless hot water for convenience and comfort? Or are you looking for an energy-efficient way to heat water only when needed? How important is having hot water even during a power outage? Comparing your needs and priorities to electric instant hot water heater features and capabilities will help you determine the best option for your home. Keep reading to explore top electric instant hot water heater recommendations to consider for your situation.
10 Best Electric Instant Hot Water Heater
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The product is ideal for those who need a small and efficient water heating solution for their home or office.
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It is ideal for providing instant hot water in homes or businesses without the need for a storage tank.
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The product is ideal for providing hot water quickly without requiring a large amount of space for installation.
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This product is ideal for providing on-demand hot water for residential or commercial properties.
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This product is ideal for providing hot water to a single point of use, such as a sink or shower.
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This product is ideal for providing hot water at a specific location, such as a bathroom or kitchen sink.
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Ideal for providing hot water to a single sink or appliance in homes, small offices, and RVs.
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This product is ideal for providing hot water in residential settings.
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9
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Ideal for providing hot water at a point of use with high energy efficiency using electricity.
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10
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It's ideal for providing hot water efficiently and on-demand in residential and commercial settings.
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1. Ecosmart Eco Mini 2.5 2.5-Gallon 120v Electric Mini Tank Water Heater
The ECOSMART tankless water heater boasts a sleek and compact design, making it a great addition to any home. Its digital output temperature display allows for easy monitoring and adjustment of water temperature.
This water heater is highly energy efficient, with a rate of 99.8-percent, helping to save on energy costs. Additionally, it is proudly manufactured in the United States, ensuring top quality craftsmanship.
With the ability to store up to 2.6 gallons of water, this water heater provides a reliable source of hot water for any point-of-use in the home. The appliance line cord included plug makes installation a breeze, and no venting is required for installation directly at the point-of-use.
The ECOSMART tankless water heater operates at a current of 12 A, providing ample hot water for everyday use. With its innovative design and reliable performance, this water heater is an excellent choice for any household looking for an efficient and space-saving hot water solution.
2. Ecosmart Eco 36 36kw 240v Electric Tankless Water Heater
This tankless water heater boasts a sleek and compact design that can fit perfectly in any home. With a digital output temperature display, users can easily adjust the temperature to their desired level.
ECOSMART takes pride in producing high-quality tankless water heaters that are 99.8-percent energy efficient. This means that users can enjoy hot water while reducing their energy consumption and ultimately saving money.
Manufactured in the United States, this tankless water heater is made with superior craftsmanship and quality materials to ensure long-lasting durability.
It's important to note that this tankless water heater requires pipe fittings with a 3/4 inch NPT size and a breaker with 4 x 40 A. The total amperage required for this unit is 150 A, so users should ensure their electrical system can accommodate this.
3. Bosch Tronic 3000: Instant Hot Water Anywhere.
Looking for a convenient way to have hot water right where you need it? Check out the 4-gallon point-of-use mini-tank hot water heater. With thermal efficiency of 98%, this mini-tank heater is a reliable and efficient way to access hot water.
Measuring 13.75 inches in width, 13.75 inches in height, and 13.5 inches in depth, this mini-tank heater is compact and easy to install under your sink. It delivers fast recovery rates, eliminating long waits for hot water at your sink. It can supply up to 2 sinks at once, so you'll never have to wait for hot water again.
With a premium glass-lined material, this electric water heater is built to last. It's easy to maintain and has a long service life. It's designed for independent installation, with a 36-37 inch cord that plugs into a 120 volt outlet. You can also install it in-line with a larger hot water source.
Installation is a breeze — simply tap into the cold water line and install the water heater directly at the sink to provide hot water. The heater can be shelf, wall, or floor mounted, and a bracket is included for your convenience.
4. Rheem 8kw 240v Tankless Electric Water Heater
This product boasts an easy-to-use ON/OFF dial control with an adjustable digital temperature display, allowing you to easily set and maintain your desired water temperature. Its self-modulating power control ensures that you're only using the energy you need, providing both efficiency and cost savings.
With an impressive flow rate of up to 1.95 gallons per minute, the 8kW model is perfect for smaller households or for use in a single bathroom. The unit features side 1/2" NPT water connections, making it easy to install and connect to your existing plumbing.
This on-demand water heater provides continuous hot water, so you can enjoy a hot shower or bath without worrying about running out of hot water or waiting for a tank to refill. With its compact size and efficient design, this water heater is a great choice for anyone looking to upgrade their current hot water system.
5. Ecosmart Pou 3.5 Point Of Use Electric Tankless Water Heater, 3.5kw@120-Volt, 6 X 11 X 3 Inch
Introducing the POU 3.5 Point of Use Electric Tankless Water Heater, a reliable and efficient solution for providing hot water to a single sink. This compact unit can easily fit in small spaces, making it a perfect addition to any home or office.
In warmer climates, the POU 3.5 can supply hot water at a rate of 0.5 gallons per minute (GPM), ensuring that you have access to hot water whenever you need it. The unit requires a 30 amp breaker and a 10 AWG wire for optimal performance.
For colder climates, it is recommended to use the POU 6, which can provide hot water for one sink at 0.5 GPM. The POU 3.5 has an amperage draw of 29 amps and a power output of 3.5 kW, ensuring that it can heat water quickly and efficiently.
The connection fittings are 1/2" NPT, ensuring compatibility with most plumbing systems. Additionally, the POU 3.5 can provide a maximum temperature rise of 47.8°F at 0.5 GPM, 23.9°F at 1 GPM, and 15.9°F at 1.5 GPM.
6. Rheem 3.5kw 120v Point Of Use Tankless Electric Water Heater
This product boasts a compact and sleek design, with a digital temperature control system that allows for precise adjustments in 1-degree increments. It has a temperature range of 80°F to 140°F, providing flexibility to meet various needs.
Please note that the RTEX04 and RTEX06 models only display the output temperature and do not have thermostatic control. Nonetheless, they offer reliable and consistent performance to meet your hot water needs.
Whether you need to heat water for a small household or a larger one, this product is a great choice. It is designed to provide you with hot water at the temperature you desire, with ease and convenience. The digital temperature control system ensures that you can adjust the temperature easily and accurately to meet your preferences.
This product is not only stylish but also practical, offering a reliable and efficient solution to your hot water needs. Whether you need hot water for your morning shower or for your hot tub, this product will deliver consistent and reliable performance. Plus, with its compact design, it won't take up too much space in your home.
7. Ecosmart Pou 6 Point Of Use Electric Tankless Water Heater, 6 Kw,white,1/20, 1/40, 1/95
Looking for a reliable and efficient way to get hot water for your sink? Look no further than this high-quality hot water unit, designed to provide fast and effective hot water for a single sink at a rate of 0.5 gallons per minute. With its powerful heating element and advanced engineering, this unit is the perfect choice for anyone looking for an easy way to get hot water on demand.
To get started with this hot water unit, you'll need to make sure you have a 30 amp breaker and 10 AWG wire installed in your home. This will ensure that the unit operates safely and effectively, and that you get the hot water you need without any problems.
It's important to note that this unit is designed to work best in warmer climates, where it can easily provide hot water for a single sink at a rate of 0.5 GPM. However, if you're in a colder climate, you may want to consider upgrading to the POU 6 model, which is better equipped to handle colder temperatures and higher demand.
One thing to keep in mind when using this hot water unit is that it's designed for use with a single sink only. It's not recommended for use with a shower or multiple fixtures, as this can put a strain on the unit and reduce its effectiveness.
Finally, it's worth noting that this hot water unit operates at 220 volts, and should be hard wired into your home's electrical system. Do not attempt to use a plug when installing this product, as this can be dangerous and may cause damage to the unit.
8. Rheem 240v Heating Chamber Rtex-13 Residential Tankless Water Heater, Gray
This product boasts an external adjustable digital thermostatic control that ensures accuracy within +/-1 degree. The LED display shows the current temperature, allowing for easy monitoring and control. With durable copper immersion and two heating elements, this product is field serviceable and self-modulating, ensuring a longer lifespan and improved performance.
Installation is a breeze with the included 1/2 NPT adapters and side 1/2 inch compression water connections. The product's impressive 99.8% energy efficiency ensures you get the most out of your energy usage while keeping your costs low.
The external controls allow for easy temperature adjustment in increments of 1°F, ensuring you get the perfect temperature every time. Additionally, the product comes with a water-saver shower head that only uses 1.5 gallons per minute, helping you save on your water bill.
This product is designed with threaded connections for easy replacement and installation, and the digital temperature display makes it easy to keep track of the water temperature. The 13kW model has a flow rate of up to 3.17 gallons per minute, providing ample water flow for all your needs.
Investing in this product means investing in a reliable and efficient water heating solution that will provide consistently comfortable water temperatures while saving you money on energy and water bills.
9. 2400w Electric Tankless Water Heater, 120vac
Introducing the Electric Tankless Water Heater, an innovative and efficient solution for all your hot water needs. This product boasts a compact size and easy installation, making it a perfect fit for any household. With its 99% energy efficiency, you can be sure that this water heater will not only save you money on your energy bill, but also reduce your carbon footprint.
At 2400 watts and 120VAC, this electric water heater is powerful and reliable. It comes with compression fittings and faucet flow controls for easy installation. The low installation cost and unlimited hot water supply make it an excellent choice for both residential and commercial use.
This water heater features a temperature range of 90 to 120 degrees Fahrenheit and a minimum flow activation of 0.40 gallons per minute. At 0.5 gallons per minute, the temperature rise is an impressive 33 degrees Fahrenheit, and at 1.5 gallons per minute, it's still a respectable 12 degrees Fahrenheit. With a pressure range of 25 to 150 psi and a 3/8" compression water connection, you can be confident that this water heater is built to last.
Measuring 6-1/4" in height and 9-5/8" in width, this point-of-use water heater is designed for horizontal mounting under the sink. It meets UL, IAMPO, HUD, and ADA standards, ensuring compliance and safety. The depth of the water heater is 2-3/4", and it requires a 12 AWG wire size.
Whether you're a homeowner or a business owner, the Electric Tankless Water Heater is a reliable and efficient choice for your hot water needs. It's made in the United States and is backed by a trusted manufacturer. Upgrade your hot water system today with this top-of-the-line product.
10. Eemax Ha036240 240v 36 Kw Electric Tankless Water Heater
The Eemax hot water heater is the perfect solution for those who need an endless supply of hot water. This innovative brand offers high-quality products, and the HA036240 model is no exception. Made in the United States, this model is designed to meet the needs of any household.
One of the most significant advantages of the Eemax hot water heater is its endless supply of hot water. With this model, you will never run out of hot water, no matter how many people are using it. This feature makes it ideal for large families or households with high hot water demands.
The Eemax HA036240 model has an impressive specification and is built to last. The unit is designed with a high-quality heating element that provides up to 3.6 kW of power, ensuring that the water is heated quickly and efficiently. Additionally, the heater has a compact design, making it easy to install and use in any space.
The Eemax HA036240 hot water heater is also incredibly energy-efficient. Its advanced technology ensures that the heater only uses the energy needed to heat the water, which can lead to significant savings on your energy bills. Furthermore, the heater is built with high-quality materials, ensuring that it will last for many years.
In terms of safety, the Eemax HA036240 model is equipped with several features to ensure that it operates safely. It has an automatic shut-off feature that turns off the heater if it gets too hot or if there is a problem with the unit. Additionally, the heater has a built-in pressure relief valve that prevents any damage to the unit.
Best Electric Instant Hot Water Heater FAQs
Can electric instant hot water heaters provide hot water to multiple fixtures at once?
Yes, electric instant hot water heaters can provide hot water to multiple fixtures at once, depending on their flow rate and capacity. Electric instant hot water heaters, also known as tankless or on-demand water heaters, heat water as it flows through the unit, eliminating the need for a storage tank. The flow rate of the unit determines how much hot water it can produce at once, and the capacity determines how much hot water it can provide in a certain period.
Most electric instant hot water heaters are designed to provide hot water to one or two fixtures at a time, such as a shower and a sink. However, larger units with higher flow rates and capacities can provide hot water to multiple fixtures simultaneously, such as a shower, a sink, and a dishwasher.
It's important to choose an electric instant hot water heater that meets your household's hot water demands. Consulting with a professional plumber can help determine the right size and capacity for your home.
How do electric instant hot water heaters differ from traditional tank water heaters?
Electric instant hot water heaters, also known as tankless water heaters, differ from traditional tank water heaters in several ways. Firstly, electric instant hot water heaters do not store hot water in a tank like traditional heaters do. Instead, they heat water on demand as it passes through the unit, providing a continuous supply of hot water. This eliminates the need to wait for a tank to refill and reheat, resulting in a more efficient system.
Another difference is the size of the units. Electric instant hot water heaters are typically smaller than traditional tank water heaters, as they do not require a large tank to store water. This makes them ideal for homes with limited space.
In terms of energy efficiency, electric instant hot water heaters are more efficient than traditional tank water heaters. This is because they only heat water when it is needed, rather than constantly keeping a large tank of water hot. This can result in significant energy savings and lower utility bills.
Overall, electric instant hot water heaters offer a more efficient, space-saving, and cost-effective option for providing hot water in a home or business.
How do I determine the appropriate size of an electric instant hot water heater for my household?
When choosing an electric instant hot water heater for your household, it is important to consider the size that will meet your specific needs. The size of the heater will depend on several factors such as the number of people in your household, your hot water usage habits and your geographic location.
To determine the appropriate size, you can start by estimating your peak hour demand, which is the maximum amount of hot water your household uses during a typical hour. You can calculate this by considering the number of people in your household and their hot water usage habits. For example, a family of four may use 60-80 gallons of hot water per hour.
Once you have an estimate of your peak hour demand, you can choose an electric instant hot water heater with a flow rate that matches your needs. The flow rate is measured in gallons per minute (GPM) and indicates the amount of hot water the heater can produce per minute. You can use the flow rate to determine if the heater can meet your peak hour demand.
It is also important to consider the temperature rise, which is the difference between the incoming cold water temperature and the desired hot water temperature. The higher the temperature rise, the larger the heater you will need.
Overall, choosing the appropriate size of an electric instant hot water heater involves careful consideration of your household’s hot water usage habits, flow rate, temperature rise, and peak hour demand.
How long do electric instant hot water heaters typically last?
Electric instant hot water heaters are known for their durability and longevity. On average, these systems can last for up to 20 years with proper care and maintenance. However, the lifespan can vary depending on several factors, including the quality of the unit, the frequency of use, and the level of maintenance.
To ensure the longevity of an electric instant hot water heater, it is essential to follow the manufacturer's instructions for maintenance, such as flushing the unit regularly to remove any sediment buildup. Additionally, it is crucial to have a professional plumber inspect and service the system annually to detect any potential issues and address them before they turn into major problems.
While electric instant hot water heaters may require a higher upfront cost, their long lifespan and energy efficiency make them a wise investment for homeowners looking for a reliable and cost-effective hot water solution.
How much space is required for installation of an electric instant hot water heater?
The space required for installation of an electric instant hot water heater depends on the specific model being installed. Generally, these units are compact and do not require a lot of space. However, it is important to ensure that there is enough clearance around the unit for proper ventilation and maintenance.
Before installation, it is recommended to carefully review the manufacturer's instructions and specifications to determine the necessary space requirements. This may include information about the minimum distance from walls or other objects, as well as the recommended height for installation.
Additionally, it is important to consider the availability of electrical connections and the capacity of the unit. Electric instant hot water heaters require a sufficient electrical supply, which may require additional wiring or upgrades to the existing electrical system.
Overall, it is important to consult with a qualified professional to ensure that the electric instant hot water heater is installed safely and efficiently in a suitable location.
What are the energy efficiency ratings of the best electric instant hot water heaters?
Electric instant hot water heaters are a popular choice for homeowners who want hot water on demand without having to wait for a tank to fill up. When choosing an electric instant hot water heater, it's important to consider its energy efficiency ratings. The best electric instant hot water heaters have an Energy Factor (EF) rating of at least 0.95, which means they are highly efficient and can help you save money on your energy bills.
Another important rating to consider is the Uniform Energy Factor (UEF), which takes into account the energy used to keep the water hot in the tank. The best electric instant hot water heaters have a UEF rating of at least 0.87, which means they use less energy to keep the water hot and are more efficient overall.
It's also worth noting that electric instant hot water heaters are generally more energy efficient than their gas-powered counterparts, as they don't lose heat through the flue and don't require a pilot light. With their high energy efficiency ratings, electric instant hot water heaters are a great choice for homeowners who want to save money and reduce their carbon footprint.
What are the safety features of the best electric instant hot water heaters?
Electric instant hot water heaters are becoming increasingly popular due to their energy efficiency and convenience. However, safety is a top priority when it comes to selecting the best electric instant hot water heaters. Here are some safety features to look for when choosing an electric instant hot water heater:
1. Overheat protection: This feature ensures that the heater shuts down automatically when the water temperature exceeds a safe level.
2. Thermal cut-off: A thermal cut-off switch is designed to prevent the heater from overheating and causing a fire.
3. Pressure relief valve: A pressure relief valve is important to release excess pressure from the tank to prevent it from exploding.
4. Ground fault circuit interrupter (GFCI): A GFCI is an electrical safety device designed to protect users from electric shock.
5. Water flow sensor: A water flow sensor ensures that the heater only operates when there is water flowing through it. This prevents the heating element from burning out when there is no water flowing.
6. Childproof lock: A childproof lock prevents children from accidentally turning on the heater and potentially causing harm.
It is important to choose an electric instant hot water heater that has all the necessary safety features to ensure a safe and worry-free experience.
What are the top brands of electric instant hot water heaters?
There are various top brands of electric instant hot water heaters available in the market. Some of the most popular and reliable brands include Rheem, Bosch, Stiebel Eltron, Ecosmart, and Rinnai. These brands offer a wide range of electric instant hot water heaters that are designed to suit different household needs and budgets.
Rheem is one of the top brands known for its durable and energy-efficient electric instant hot water heaters. They offer a range of models that come with different features such as Wi-Fi connectivity, eco-friendly designs, and digital temperature controls.
Bosch is also a reputable brand that offers a variety of electric instant hot water heaters with innovative features like self-modulation technology and compact design.
Stiebel Eltron is another brand known for its high-quality instant hot water heaters that are designed to provide hot water on-demand while saving energy.
Ecosmart is a popular brand among homeowners looking for efficient and cost-effective electric instant hot water heaters. Their models come with self-modulating technology and digital temperature controls.
Rinnai is also a leading brand that offers electric instant hot water heaters with advanced features like Wi-Fi connectivity and recirculation technology.
Overall, choosing the right brand of electric instant hot water heater depends on your household needs and budget. It’s essential to research and compare different brands to find the one that suits your requirements.
What is the average cost of an electric instant hot water heater?
The average cost of an electric instant hot water heater can vary depending on several factors such as the brand, size, and features. On average, a basic electric instant hot water heater can cost anywhere from $150 to $400. However, if you want a larger unit with more features such as a digital display or multiple temperature settings, the cost can increase up to $1,000 or more. It is important to note that installation costs are not included in the price of the unit. The installation cost can range from $500 to $1,500 depending on the complexity of the installation, the location, and the type of unit being installed. It is recommended to get several quotes from licensed professionals before making a decision on which unit to purchase and have installed.
What is the maintenance required for electric instant hot water heaters?
Electric instant hot water heaters are a convenient and efficient way to provide hot water in homes and commercial buildings. However, like any other appliance, they require maintenance to keep them running smoothly and efficiently.
To start with, it is essential to clean the heater's exterior regularly to prevent dust and dirt buildup, which can affect its performance. You should also check the heater's filter regularly and clean it to prevent sediment buildup that can lower the heater's efficiency or cause it to malfunction.
Another crucial aspect of maintaining electric instant hot water heaters is to check the pressure relief valve periodically. This valve helps release excess pressure that can damage the heater or cause it to explode. If the valve is faulty, it may need to be replaced.
Finally, it is advisable to have a professional plumber inspect the heater at least once a year to ensure that it is in good working condition. They can check the heating element, thermostat, and other components to make sure they are functioning correctly.
By following these maintenance tips, you can extend the life of your electric instant hot water heater and enjoy hot water whenever you need it.
