Best Tankless Water Heater Electric Whole House (2024 Updated)
When it comes to selecting a tankless water heater electric whole house, there are a few key points to consider before making your purchase.
First, you need to assess the amount of hot water your household needs. Knowing the peak demand for hot water will help you determine the size and power of the tankless water heater that is right for your needs.
Second, you should consider the cost of the tankless water heater. Tankless water heaters have a higher upfront cost than traditional tank-style water heaters, but they are more cost-effective in the long run due to their energy efficiency.
Third, you should consider the efficiency of the tankless water heater. Tankless water heaters are significantly more efficient than tank-style water heaters, so you can save on energy costs over the lifetime of the unit.
Fourth, you should consider the installation requirements of the tankless water heater. Tankless water heaters require a dedicated gas line, and the installation process is more complex than for traditional tank-style water heaters.
Finally, you should consider the warranty offered by the manufacturer. Tankless water heaters typically come with a longer warranty than traditional tank-style water heaters, so you can have peace of mind knowing you’re covered if something goes wrong.
In summary, when looking for a tankless water heater electric whole house, you should consider the amount of hot water your household needs, the cost of the tankless water heater, the efficiency of the tankless water heater, the installation requirements of the tankless water heater, and the warranty offered by the manufacturer. By taking these factors into consideration, you can make an informed decision and ensure you get the best tankless water heater for your home.
10 Best Tankless Water Heater Electric Whole House
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1. Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White
The Stiebel Eltron Tankless Heater – Tempra 36 Plus is an efficient, easy to install, on-demand water heater that provides an unlimited, continuous supply of hot water. With its sleek design, it is space-saving and requires no additional venting. This electric tankless heater is powered by a single phase, 60 Hz and a 208V voltage and 27kW wattage. It is also incredibly quiet, thanks to the electronic switch activated operation.
The Stiebel Eltron Tankless Heater – Tempra 36 Plus features a copper sheathed heating element that is housed in a copper cylinder. The copper cylinder aides in the heat transfer process and helps to ensure a continuous and consistent flow of hot water. This tankless heater also offers an impressive 7 year leakage and 3 year parts complete warranty.
The Stiebel Eltron Tankless Heater – Tempra 36 Plus is the perfect solution for providing an economical and eco-friendly solution for your hot water needs. With its space-saving design and reliable performance, it is a great choice for anyone looking for convenience, efficiency and peace of mind. The Stiebel Eltron Tankless Heater – Tempra 36 Plus is sure to provide you with an on-demand, continuous and unlimited supply of hot water.
2. Rheem Rtex-24 24kw 240v Electric Tankless Water Heater, Gray
The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is a reliable and efficient water heater that provides on-demand, consistent and continuous hot water. Featuring an ON/OFF Dial Control with an adjustable digital temperature display, this water heater uses self-modulating power control to deliver up to 5.9 GPM for RTEX-24. Plus, with its bottom 3/4" NPT water connections, installation is a breeze.
This tankless water heater from Rheem is designed to provide a dependable source of hot water without the need for a storage tank. It offers great energy efficiency and a long life, thanks in part to its self-modulating power control, which constantly monitors and adjusts water temperature to ensure consistent and accurate results. The adjustable digital temperature display gives you the flexibility to set the temperature according to your needs.
The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is a great choice for anyone who wants an efficient and reliable water heating solution. This water heater is easy to install, requires minimal maintenance, and is capable of delivering up to 5.9 GPM for RTEX-24. It is also designed to provide a steady stream of hot water on demand, so you won't have to worry about running out.
Whether you're looking for an energy-efficient hot water solution for a large home, or a reliable and economical way to heat water for a small business, the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is a great choice. With its adjustable digital temperature display, self-modulating power control, and bottom 3/4" NPT water connections, this tankless water heater is designed to provide years of dependable service.
3. Ecotouch 18kw Tankless Water Heater, 240v
The ECOTOUCH Electric Tankless Water Heater is a powerful and efficient water heating solution for your home. This 18kW on demand instant hot water heater offers an instant supply of 120℉ or higher hot water with no preheating needed, eliminating temperature fluctuation during shower time. With its self-modulation technology, the heater will adjust power input according to the current flowrate and temperature setting, ensuring an ideal temperature and optimal energy efficiency of up to 98%.
The tankless hot water heater is equipped with digital display and touch control panel for easy temperature setting, while its screen provides useful information on the working status. It is also designed with multiple safety protections, such as leakage protection, over heating protection and auto stop, making it safe and reliable.
The compact design of the ECOTOUCH Electric Tankless Water Heater allows for easy installation point of use, ideal for shower, kitchen, bar, school and hair salon. It requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG/2 wires with Grounding for installation. It is ETL-listed and UL-qualified, making it a reliable and long-lasting hot water heater for your home.
4. 36kw Tankless Electric Water Heater, 7.3gpm, Self-Modulating, Digital Temp. Display.
The BLACK+DECKER Tankless Electric Water Heater is an ideal unit for the entire home to receive instant and continuous hot water in seconds. Its powerful 36kW heating system provides endless hot water with automatic water flow sensors. This self-modulating unit allows you to set and maintain desired temperature in increments of 1℉, and a digital temperature display makes it easy to read.
This multi-application unit is designed for both commercial and residential use, and is perfect for showers, sinks, bathrooms, washing machines and kitchens. The wall-mounting design allows for installation virtually anywhere – in a cabinet, closet, garage, or basement. The compact size of the unit allows you to save space, and you won't need a bulky hot water tank either – you can save up to 50% on heating costs as water only heats when you need it.
The BLACK+DECKER Tankless Electric Water Heater is reliable and durable with an extensive warranty of 7-year leakage-free coverage, 5-year heat exchanger, and 2-year parts. The stainless steel, non-corrosive internal canisters and piping provide increased heating efficiency and life expectancy. The unit is lead-free and does not require gas lines or venting. Installation does require 4 x 40 amp single-phase double-pole breakers, 4 x 8/2 AWG wire size and 240V, and standard 3/4 in. NPT (straight thread) fittings.
The BLACK+DECKER Tankless Electric Water Heater is an ideal solution for the entire home to receive hot water on demand instantly. Its powerful 36kW heating system, self-modulating technology and digital temperature display provide a reliable and efficient unit. The extensive warranty and lead-free construction make it a durable and safe choice. With its wall-mounting design, you can install it virtually anywhere, saving space and money in the process.
5. Ecosmart Eco 36 36kw 240v Electric Tankless Water Heater
Introducing the Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater – an innovative product that offers sleek, compact design with a digital output temperature display. This energy-efficient tankless water heater is 99.8-percent efficient and manufactured in the United States. It requires four 40A breakers and one 150A breaker and has 3/4 inch NPT pipe fittings.
This tankless water heater has been designed to provide on-demand hot water, which means you no longer need to worry about hot water running out. It is ideal for both residential and commercial applications. The digital display allows you to easily adjust the temperature to suit your needs. It can heat up to 7.2 gallons per minute, which makes it suitable for large households or businesses.
The energy-efficient design of the Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater makes it an excellent choice for those looking to reduce their energy bill. It does not require a storage tank, which means you won't need to worry about refilling it. The compact size of the unit makes it easy to install, and the digital temperature display ensures that you can always access the correct temperature for your needs.
The Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater is a reliable and efficient way to get on-demand hot water. It is 99.8-percent energy efficient and is manufactured in the United States. It requires four 40A breakers and one 150A breaker and has 3/4 inch NPT pipe fittings. With its sleek design, digital output temperature display, and energy-efficient design, this tankless water heater is an excellent choice for those looking to reduce their energy bill.
6. Bosch Wh27 Tronic 6000 C Electric Tankless Water Heater – 26.9 Kw
The Bosch Thermotechnology WH27 Tronic 6000 C Electric Tankless Water Heater is an ideal choice for providing hot water when you need it, for as long as you need it. With its 26.9 kW output, this tankless whole house electric water heater is great for both commercial and residential applications. Furthermore, the heater’s polymer encased elements and built-in flow sensor ensure constant output temperature and superior temperature stability and control. The external temperature control knob also allows for easy adjustment. Plus, the WH27 Tronic 6000 C is extremely efficient, with a 97% thermal efficiency and minimal stand-by loss.
The WH27 Tronic 6000 C is easy to install, and can be mounted virtually anywhere. With its compact design and quick setup, you can have hot water at your fingertips in no time. You won’t have to worry about running out of hot water again; this tankless water heater will keep up with your hot water needs. Whether you are washing dishes or taking a shower, the WH27 Tronic 6000 C will provide you with the hot water you need.
When it comes to hot water, the Bosch Thermotechnology WH27 Tronic 6000 C Electric Tankless Water Heater is the perfect solution. Its innovative design, high-efficiency, and quick installation make it ideal for both commercial and residential applications. The tankless water heater ensures that you always have hot water when you need it, with superior temperature stability and control. So, don’t wait any longer; get your own Bosch Thermotechnology WH27 Tronic 6000 C Electric Tankless Water Heater today and enjoy hot water when you need it for as long as you need it.
7. Thermomate 27kw Electric On-Demand Water Heater, 240v.
This tankless water heater is perfect for residential whole house showers, providing instant and endless hot water. With the thermomate On Demand Instant Endless Hot Water Heater, you'll never have to wait for hot water again, and you'll never run out. It's equipped with self-modulating power, meaning it only uses the energy required to heat the water when you need it, saving up to 60% on your water heating costs compared to traditional tank water heaters.
The Digital Temperature Display allows you to adjust the temperature in 1° increments from 80°F to 140°F, and the heating element is separated from the water tube, significantly reducing scale, corrosion, and mineral buildup on the element. This provides better performance and low maintenance.
The tankless water heater is easy to install and provides safety protection, as it is ETL certified with overheating protection and will automatically stop heating when it detects no water. Wire gauge is 3 x 8AWG and the unit size is 17.12" x 13.12" x 3.12". It requires 3 SET x Double-pole 40AMP Breakers to achieve 240V. It also comes with a 2-year limited warranty and 24/7 customer support services.
Enjoy hot water with no wait time, no running out of hot water, maximum efficiency, continuous stable temperature, and optimal power usage with the thermomate On Demand Instant Endless Hot Water Heater.
8. Rheem 18kw 240v Tankless Electric Water Heater
This Rheem 18kW 240V Tankless Electric Water Heater is designed to meet your hot water needs with advanced self-modulation technology, adjusting power to meet those demands. It features an external digital thermostatic control with LED display, ensuring an accuracy of (+/1) degree. Made with durable Copper immersion two heating elements, this tankless water heater is field serviceable for easy replacement and simple installation. With a flow rate of up to 4.4 GPM, this water heater offers a powerful and efficient performance. Additionally, bottom 3/4 inch NPT water connections are threaded for easy installation and maintenance. The digital temperature display allows users to conveniently monitor the temperature and adjust settings. This electric water heater is the perfect balance of quality, performance, and affordability.
9. Ecosmart Eco 24 Electric Tankless Water Heater, 24 Kw, 240v.
The Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater is the perfect choice for anyone looking to save on their water heating costs. This innovative unit features patented Self Modulating Technology and design, which allows it to adjust its energy use according to the amount of hot water needed. This energy efficient design ensures it is 99.8-percent efficient and that you’ll never run out of hot water.
This tankless water heater is ideal for households of up to three to four people, and it has a 0.3GPM activation flow rate. It has been designed for easy installation in small spaces, with its dimensions being 17x17x3.5 inches. It also comes with a 100A circuit breaker for added safety.
The Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater is an excellent choice for those looking to reduce their water heating bill. It has been designed to save up to 60-percent on water heating costs, thanks to its energy efficient design and Self Modulating Technology. In addition to this, it also comes with a lifetime warranty, so you can be sure of its quality and performance.
If you’re looking for an energy efficient, cost-effective way to heat your water, then the Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater should be your first choice. With its patented Self Modulating Technology and 99.8-percent energy efficiency, you can be sure of consistent hot water and great savings on your water heating bill. Plus, with its lifetime warranty, you can trust in its quality and performance.
10. Rheem 240v 3 Heating Chambers Rtex-27 Residential Tankless Water Heater, Gray
The Rheem 240V 3 Heating Chambers RTEX-27 Residential Tankless Water Heater is the perfect choice for anyone looking for a reliable and efficient way to heat their water. This model is designed with an external digital thermostatic control with LED display for precise temperature regulation (+/1 degree accuracy). It also features the most advanced self-modulation technology, which allows it to adjust power output to meet hot water demand.
The Rheem tankless water heater is equipped with three durable copper immersion heating elements, making it field serviceable. Thanks to its simple installation, it is easy to assemble and can be easily connected to the bottom 3/4 inch NPT water connections. Additionally, it is threaded for easy replacement and digital temperature display for convenience.
The Rheem tankless water heater is not just convenient and easy to use, but also an incredibly efficient way to heat water. It is designed with a digital thermostat to ensure precise temperature control, while its self-modulation capabilities make sure that it is able to adjust power output to meet hot water demand. Furthermore, its durable copper immersion heating elements make it a reliable and long-lasting choice.
In conclusion, the Rheem 240V 3 Heating Chambers RTEX-27 Residential Tankless Water Heater is the perfect choice for anyone looking for a reliable and efficient way to heat their water. It is easy to install and provides precise temperature control, while its self-modulation capabilities make sure that it is able to adjust power output to meet hot water demand. Additionally, its durable copper immersion heating elements make it a reliable and long-lasting choice.
Best Tankless Water Heater Electric Whole House FAQs
Are whole house tankless water heaters worth it?
Yes, whole house tankless water heaters can be worth it. They are more efficient than traditional tank-style water heaters, as they heat water on demand and do not store hot water. Additionally, they are more compact and take up less space in a home. This can be beneficial in tight spaces, such as small apartments. Tankless water heaters also have a longer lifespan than traditional tank-style heaters, lasting up to 20 years. Finally, tankless water heaters can provide hot water to multiple fixtures at once, reducing the wait time for hot water. Overall, a whole house tankless water heater can be a great investment for energy efficiency and convenience.
Can an electric tankless water heater run a whole house?
Yes, an electric tankless water heater can run a whole house, depending on the size and power of the water heater. Generally, electric tankless water heaters are more efficient than tank-style water heaters, as they only heat water when it is needed, and not constantly like tank-style water heaters. However, larger homes may require multiple tankless water heaters to provide enough hot water for the entire house. Additionally, electric tankless water heaters will require a dedicated 240-volt circuit to supply enough power to heat the water. Therefore, it is important to consult a professional to ensure the correct size and power of tankless water heater is chosen for the desired application.
How big of a tankless hot water heater do you need for a whole house?
The exact size of tankless hot water heater you need for a whole house depends on the size of your home and the amount of hot water you expect to use at the same time. Generally, a tankless water heater will need to provide between 2-4 gallons per minute of hot water to serve the needs of an average-sized home. For larger homes, you may need to install multiple tankless water heaters or a larger single unit to meet your hot water needs. You should also consider the number of bathrooms, showers, and other devices that will be drawing hot water. An experienced professional can help you determine the size and number of tankless water heaters you need to provide sufficient hot water for your whole house.
What is the downside of an electric tankless water heater?
The biggest downside of an electric tankless water heater is the upfront cost. They tend to be more expensive than traditional water heaters, and installation costs can also be high. Additionally, they require a lot of electricity to operate, which can result in higher electricity bills. Furthermore, electric tankless water heaters are limited in the amount of water they can produce at once, meaning they may not be suitable for households with large hot water needs. Finally, maintenance and repairs can be costly and time-consuming, as specialized technicians are often needed to work on the system.
