How To Choose The Best Whole House Electric Tankless Water Heater

You should choose the best whole house electric tankless water heater depending on your needs and conveniences. Different types of whole house electric tankless water heater are available in the market to fulfill different needs. Some of them may be the best in quality but may not serve the purpose of your requirement. So, it is better to understand and evaluate your needs and check out the items to see what fits your needs best.

We have selected the most essential products on the market and provided short features to let you quickly check them. With our buying guide and tips, you can choose the items that fit you the best.

# Preview Product Price
1 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW – Quantity 1 $502.35
2 Electric Tankless Water Heater, ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House ECO180B Black $299.99
3 Rheem 18kW 240V Tankless Electric Water Heater $447.32
4 Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray $584.89
5 Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White $812.30
6 Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5 $502.33
7 Tankless Water Heater Electric 27kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 114A GRAY $469.99
8 Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater $599.00
9 GE APPLIANCES 18 kW 240v Whole Home Tankless Water Heater | Electric Water Heater with Digital Temperature Control 18000 Watts | 3.8 Gallons per Minute, Diamond Gray (GE18SNHPDG) $371.00
10 Eemax HA036240 240V 36 kW Electric Tankless Water Heater $752.43

10 Best whole house electric tankless water heater Reviews and Guide in 2022

Check out the top 10 whole house electric tankless water heater Reviews to see what product offers you the best value and usefulness.

whole house electric tankless water heater

1. EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW – Quantity 1

Brand: EcoSmart

Model: ECO 27

Size: 17 x 17 x 3.5

Color: White

Dimention: 8 * 8 * 1

  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
  • Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
  • Save up to 12 cubic feet of storage space.
  • EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3×40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
  • NEVER run out of hot water with an ECOSMART tankless water heater.
  • Required Breaker Quantity: Three 40 Amp Double Pole
  • Recommended Electrical Panel: 200 Amps
  • Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
  • Digital temperature control in 1-degree increments gives users complete control of hot water

2. Electric Tankless Water Heater, ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House EC

Brand: ECOTOUCH

Model: ECO180B

Color: Black

Dimention: 8 * 6 * 2

  • 【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.
  • 【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.
  • 【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.
  • 【SAFE and DURABLE】Newly updated and applied with multiple protections, such as leakage protection, over heating protection and auto stop. Every piece electric tankless water heater ECO180B goes through strict tests to ensure 100% safety and it is listed by ETL and qualifies for UL. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.
  • 【POINT of USE WATER HEATER】The sleek tankless water heater ECO180B is compact as shoes box, making it possible to install anywhere point of use to avoid waste, 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 18kW Tankless Water Heater it would requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG/2 wires with Grounding.

3. Rheem 18kW 240V Tankless Electric Water Heater

Brand: Rheem

Model: RTEX-18

Size: Small

Color: Gray

Dimention: 1 * 9 * 7

  • Simple installation – bottom 3/4 inch NPT water connections
  • Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • Most advanced self-modulation, adjust power to meet hot water demand
  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Threaded for easy replacement, simple installation, digital temperature display

4. Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Brand: Rheem

Model: RTEX-24

Color: Gray

Dimention: 1 * 9 * 7

  • Bottom 3/4″ NPT water connections
  • ON/OFF Dial Control with adjustable digital temperature display
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Self-modulating power control
  • On demand, consistent and continuous hot water

5. Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White

Brand: Stiebel Eltron

Model: 36 Plus

Color: White

Dimention: 7 * 2 * 8

  • Electronic switch activated for virtually silent operation. Phase- single 60 Hz. Voltage- 208 V. Wattage- 27 kW
  • 7 Years leakage and 3 years parts complete warranty
  • Copper sheathed heating element housed in copper cylinder
  • Sleek design saves space and no venting required
  • On-demand, continuous and unlimited supply of hot water

6. Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5

Brand: EcoSmart

Model: ECO24

Size: 17 x 17 x 3.5

Color: White

Dimention: 8 * 1 * 8

  • Lifetime warranty
  • Never run out of hot water with an ECOSMART tankless water heater
  • Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
  • Patented Self Modulating Technology and design.Activation flow 0.3 GPM
  • 100 A
  • ECOSMART tankless water heaters are 99.8-percent energy efficient

7. Tankless Water Heater Electric 27kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Wh

Brand: thermomate

Model: ET270

Size: 240V/27kW

Color: Gray

Dimention: 1 * 8 * 6

  • [Easy Installation & Safety Protection] – ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
  • [Stable Water Temperature] – Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
  • NOTE – Make sure this water heater is the correct size for your hot water need: 27kW at 240V draw max 114Amp; Required breaker 3 x Double-POLE 40AMP; Wire gauge 3 x 8AWG; Unit size 17.12″ x 13.12″ x 3.12″; Water connection 3/4″ NPT. 2-year limite warranty and 24/7 customer support services.
  • [Instant Unlimited Hot Water] – REQUIRE 3 SET x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 5.27GPM @35°F Rise
  • [Self-modulating Power] – Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.

8. Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater

Brand: EcoSmart

Model: ECO 36

Color: White

Dimention: 1 * 8 * 9

  • Required Breaker:4 x 40 A
  • Sleek and compact design with digital output temperature display
  • Pipe Fittings:3/4 inch NPT
  • 150 A
  • ECOSMART tankless water heaters are 99.8-percent energy efficient
  • Manufactured in United States

9. GE APPLIANCES 18 kW 240v Whole Home Tankless Water Heater | Electric Water Heater with Digital Temperature Control 18000 Watts | 3.8 Gallons per Mi

Brand: GE APPLIANCES

Model: GE18SNHPDG

Color: Diamond Gray

Dimention: 7 * 1 * 5

  • INTUITIVE INTERFACE AND SPACE SAVING DESIGN – Adjust temperature and settings with easy-use touch screen on a compact unit that takes up significantly less space than a tank style water heater
  • UNLIMITED HOT WATER ON DEMAND – Tankless electric water heater provides instant, continuous water flow
  • WHOLE HOME SOLUTION – Easily provides enough hot water for a house or apartment
  • ENERGY EFFICIENT – Conserves energy and water by only using energy when hot water is in use, saving you money
  • PERFORMANCE UP TO 3.8 GALLONS PER MINUTE (GPM) – Enough to run 1 faucet and 2 showers simultaneously in warm climates (*Results are based on 72˚F inlet water temperature and 105˚F outlet water temperature)

10. Eemax HA036240 240V 36 kW Electric Tankless Water Heater

Brand: Eemax

Model: HA036240

Dimention: 2 * 9 * 10

  • Model number: HA036240
  • Endless hot water
  • Country of Origin: United States
  • Brand name: Eemax

What Features and Facts Did We Consider to Choose the Best whole house electric tankless water heater

For choosing the correct list of the whole house electric tankless water heater we have considered some of the products’ aspects and suggest our users do so. Here are the factors to look at.

Brand Value

A brand’s value is the sum total of how much consumers are willing to pay for its goods or services. This can be affected by many factors, including the quality of the whole house electric tankless water heater, the perceived value of the brand, and the emotional connection consumers feel with the brand.

A strong brand can command a premium price, while a weak brand may have to discount its products to attract buyers.

So, we have considered the brand value for choosing a product.

Features of the Product

When buying a whole house electric tankless water heater, it is essential to check the features to ensure you get what you want. Some features to look for include:

  • The size of the item
  • The color of the product
  • The correct weight to choose
  • What materials did it use?
  • The shape of the item
  • The design of the whole house electric tankless water heater.
  • The right price
  • The warranty of the product

Does it Come with a Warranty?

When making a big purchase, it is essential to consider the item’s warranty. If something goes wrong with the item, the warranty will cover the repair or replacement costs. Most warranties last for a year, but some may last longer. We have considered warranty an essential factor in choosing a whole house electric tankless water heater.

Guides on User Rating

When looking at user ratings, we keep a few things in mind. The first is that ratings are often skewed towards the extremes, with more people rating something as 5 stars or 1 star than something in the middle. This means you should take the average rating with a grain of salt.

Another thing to remember is that people who take the time to leave a rating usually do so because they either loved or hated the whole house electric tankless water heater. This means that you should pay more attention to the reviews that people leave than the rating itself.

Finally, we considered that user ratings are just one tool you can use to decide. They should not be the only factor you consider when purchasing.

Consideration on Specifications

When it comes to making a big purchase for the right whole house electric tankless water heater, it is essential to do the research and compare different whole house electric tankless water heater options before making a decision.

One of the main things we considered is the specifications of the product. This can include features, size, weight, price, and more. By taking the time to compare the specifications of different products, you could find the one that is the best fit for you and your needs.

Our Evaluation of Quality of the Product

When customers are looking to make a purchase, one of the critical considerations is the quality of the whole house electric tankless water heater. Customers want to know that they are getting a well-made product that will last. This is why quality is such an important consideration when customers are making a purchase. Quality products are crucial to customer satisfaction and can help build brand loyalty.

So, to make the review section, anyone should evaluate the quality of the products to make the right choice.

FAQ – Frequently Asked Questions and Answers

How Did We Come Up with The List for This Buying Guide?

First, our algorithms gathered as much information on these items as possible from reliable sources. We collect information by analyzing vast amounts of data. Then, using industry-standard criteria, specialists assessed them on their quality-to-price ratio, allowing us to select the top whole house electric tankless water heater on the market!

How Much Money Should We Spend to Buy whole house electric tankless water heater?

Before deciding on a pricing range for a product, consider its quality and how long it will endure. Determine how essential the product is to you and how long it will serve you. Then compare that to its quality.

If you are not going to use the whole house electric tankless water heater for a long time, you do not need a quality that will endure a long time; thus, do not make your pricing range too high.

On the other hand, if you intend to use it for an extended period and regularly, you will require a high-quality item. As a result, a more significant price range would not be an issue.

How to Maintain the Item Properly

No matter what you are using, whether it’s an electric item, clothing, or other appliance, you want to ensure it lasts as long as possible. Here are a few tips on how to take care of your product to make it last longer.

Clean the Product Regularly

One of the best ways to extend the life of any item is to clean it regularly. This is especially true for items that see a lot of use. Keeping the whole house electric tankless water heater clean can prevent dirt and grime from building up and causing wear and tear. In addition, regular cleaning can help you spot any potential problems early on before they have a chance to cause severe damage.

Where to Keep the whole house electric tankless water heater

When storing your belongings, be sure to keep the whole house electric tankless water heater in a cool and dry place. This will help to keep them in good condition and prevent them from becoming damaged. If possible, store them in a climate-controlled environment to further protect them.

Don’t Expose it to Extreme Heat/Wet conditions

It is best to avoid exposing the whole house electric tankless water heater in heat and humid environments. The item can absorb moisture from the air, leading to warping and cracking. The item can also expand and contract in extreme temperatures, which can cause the finish to crack or peel.

Don’t Put it Around Harsh Chemicals

Avoiding contact with harsh chemicals is essential for protecting the condition of whole house electric tankless water heater. These chemicals can be found in many standard household products, including cleaners, detergents, and pesticides.

They can also be found in some workplaces. Exposure to harsh chemicals can destroy your products or reduce their durability of the product. Taking some steps to avoid contact with these chemicals can help keep you safe.

Keep it in a Clean Place

It is essential to keep your whole house electric tankless water heaters in a clean space to enhance their longevity. This means avoiding places with excessive dust, dirt, or moisture, which can lead to damage and premature deterioration.

Taking care of your products will help them last longer and perform better, so it’s worth creating a safe, clean environment for them.

My Two Cents on This Buying Guide

Finding a good product can be difficult. I recommend considering only products that offer premium features at an affordable price.

I like products that make buying more manageable, rather than piling new features onto old products. I also recommend products that have excellent customer service. You want a product you’ll use for a long time, so customer service matters.

You can easily select the best whole house electric tankless water heater by reading our brief reviews and description area. In conclusion, you should read the item’s description carefully to choose the best item. The description should contain information about the item, such as the type, color, size, material, brand, usage, decorations, etc.

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