Top 20 Best tankless water heater for whole house Reviews

There is no one-size-fits-all answer to the question of what the best tankless water heater for whole house is. However, there are a few factors that can help you narrow down your options and choose the tankless water heater for whole house that is right for you. First, consider your needs and what you hope to achieve with the product.

Then, look at the different features offered by each tankless water heater for whole house and decide which ones are most important to you. Finally, read reviews and compare prices to find the best value for your money. With these factors in mind, you should be able to find the best product for your needs.

Follow This Table For Quickly Selection A tankless water heater for whole house

Place Image Product Information Score
1 BLACK+DECKER 36 kW Self-Modulating 6.1 GPM Electric Tankless Water Heater, Multi-Application Hot Water Heater Electric BLACK DECKER kW Self-Modulating GPM Electric Tankless by BLACK
9.4
2 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 Tankless Water Heater Electric kW Volt thermomate by Tankless
9.5
3 Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water, Eco, White, 20.2 Stiebel Eltron Tankless Water Heater Tempra Plus by Stiebel
9.8
4 Tankless Water Heater Natural Gas, Camplux Instant Hot Water Heater, 3.18 GPM Natural Gas Tankless Water Heater, Whole House Gas Water Heater, Indoor, Black Tankless Water Heater Natural Gas Camplux Instant by Tankless
9.1
5 Titan Tankless N-210 Whole House Water Heater System Titan Tankless N- Whole House Water Heater by Titan
9.6
6 Electric Tankless Hot Water Heater, 18KW 240V On Demand Instant Hot Water Heater with Digital Display Touch Panel, ℉ & ℃ Conversion, Easy Installation for Bathroom Shower Whole House, ETL Certified Electric Tankless Hot Water Heater KW V by Electric
9.4
7 Rinnai RL94EN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Outdoor Installation Rinnai RL EN Tankless Hot Water Heater by Rinnai
8.9
8 Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater, 9.5 kW, 6.6' x 12.8' x 2.9', White Bosch Thermotechnology kW Bosch US - R by Bosch
9.2
9 Rinnai RL94IN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Indoor Installation Rinnai RL IN Tankless Hot Water Heater by Rinnai
9.6
10 MAREY 4.2 GPM, 105,800 BTUs, Whole House solution, Digital Display, Outdoor Natural Gas Tankless Water Heater, Silver MAREY GPM BTUs Whole House solution Digital by MAREY
8.9

Best tankless water heater for whole house in 2022

Bestseller No. 1

BLACK+DECKER 36 kW Self-Modulating 6.1 GPM Electric Tankless Water Heater, Multi-Application Hot Water Heater Electric

Popularity Score 9.8
Quality Score 9.3
Sentiment Score 9.3

Highlighted Features

  • On demand hotwater heater for ideal for whole house
  • Electric Water Heater with no hot water tank
  • WARRANTY: 7-yr leakage free, 5-yr heat exchanger, 2-yr parts
  • Save up to 50% on your water heating costs

Additional Info :

Brand BLACK
Color Black
Item Dimensions
Height 20
Width 25
Length 44
Weight 30.88
Bestseller No. 2

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

Popularity Score 9.8
Quality Score 9.7
Sentiment Score 9.5

Highlighted Features

  • [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.
  • [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.
  • [Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
  • 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.

Additional Info :

Brand Tankless
Color Black
Item Dimensions
Height 10
Width 33
Length 32
Weight 56.74
Bestseller No. 3

Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water, Eco, White, 20.2

Popularity Score 8.9
Quality Score 9.8
Sentiment Score 9.8

Highlighted Features

  • CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
  • SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
  • EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
  • TEMPRA 24 PLUS – This specific model is 24kW, 240V, requires a min recommended electric service of 150 A, and offers an output water temperature of 68° to 140°F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
  • WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase

Additional Info :

Brand Stiebel
Color Unknown
Item Dimensions
Height 18
Width 21
Length 37
Weight 27.99
Bestseller No. 4

Tankless Water Heater Natural Gas, Camplux Instant Hot Water Heater, 3.18 GPM Natural Gas Tankless Water Heater, Whole House Gas Water Heater, Indoor, Black

Popularity Score 8.9
Quality Score 9.1
Sentiment Score 9.6

Highlighted Features

  • 3.18 GPM Instant Constant Water Heater -Camplux 3.18 GPM tankless water heater natural gas delivers 3.18 gallons per minute of on-demand endless hot water ensures constant comfortable instant hot water for 2-3 persons whole house. 3.18-GPM heater is activated by water flow rather than water pressure; Minimum activation water capacity rate: 0.65 GPM-4.8 GPM; Maximum input rating: 82,000 BTUs; Water connection location/size: Bottom/0.5-inch NPT.
  • Convenient, Easy Installation -The tankless water heater uses standard 1/2" BSP water fitting and gas inlet. The water heater comes with1/2 " BSP female to 1/2" NPT male gas connector adapter then you want hook this water heater to natural gas pipe directly.It also comes with 2.3" horizontal vent pipe,ensures efficient power ventilation. You can take Camplux customized wall thimble-WT236 for perfect indoor use.
  • Modern Design,Easy Operation -Trendy and modern design with unique black glassy front panel,easy to control the water temperature with LED touchscreen (Fahrenheit and Celsius switch optional).The compact size instant water heater saves more space than traditional tanks.
  • Outstanding Features- The Camplux tankless hot water heater comes with oxgen-free copper heat exchanger and v-type stainless steel burner,high heating efficiency up to 89.98 %; 90°wind isolation design, this tankless natural gas water heater can anti backflow wind in high floors, the S/S 2.36 ” vent pipe exhaust harmful gases quickly.
  • 6-In-1 Protection Ensure Your Safety- Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety. Fully automatic temperature controls with an energy saving mode and child lock technology.

Additional Info :

Brand Tankless
Color Black
Item Dimensions
Height 17
Width 27
Length 28
Weight 60.36
Bestseller No. 5

Titan Tankless N-210 Whole House Water Heater System

Popularity Score 9.5
Quality Score 9.8
Sentiment Score 9.8

Highlighted Features

  • Provides endless hot water for your entire hoe and saves up to 50% on your hot water bill!

Additional Info :

Brand Titan
Color Multicolor
Item Dimensions
Height 8
Width 31
Length 43
Weight 47.16
Bestseller No. 6

Electric Tankless Hot Water Heater, 18KW 240V On Demand Instant Hot Water Heater with Digital Display Touch Panel, ℉ & ℃ Conversion, Easy Installation for Bathroom Shower Whole House, ETL Certified

Popularity Score 9.4
Quality Score 9.8
Sentiment Score 9.3

Highlighted Features

  • ♡【18KW INSTANT WATER HEATER】- The electric Tankless Water Heater applied with powerful 18kW heating system supplies sufficient instant and endless hot water in seconds, no waiting for preheating nor terrible temp fluctuation during shower. Perfect companion for single shower, sink faucets, dishwasher, washing machine or whole house.
  • ♡【SAVING SPACE & ENERGY】- This instant hot water heater with compact size perfect and quite space-saving for kitchen, school, hospital, and a hair salon. Tankless, instantaneous heating for on demand hot water, No pre-heating. No stand-by heating loss energy-saving. [WARM TIPS]: Please verify it is the right size for you: 18kW at 240V(only); dimensions 10.24" (W) x 15.16" (H) x 3.7" (D), Plumbing connections :3/4" NPT.
  • ♡【℉ & ℃ CONVERTIBLE TECH】- More considerate is, we consider the users' habit, we upgraded the water heater and equipped with degree conversion button. Through touch screen operation, you can easily convert Fahrenheit and Celsius. It is convenient for you to choose and check the temperature according to your habits.
  • ♡【EASY TO INSTALL & OPERATE】- The 18KW electric tankless water heater comes with digital display & touch control panel so temp setting is a easy job. Best of all, useful information on the screen helps you get full understanding of the working status, you no longer need to perform difficult operations without instructions.
  • ♡【MULTIPLE PROTECTION】- Your safety is the top priority. Multiple protection to ensure your safety. Overtemperature protection: when the outlet water temp. reaches over 153F/67C, the electricity will be cut off to avoid getting scalded and the screen displays E1. the appliance will start to work automatically while temp. drop to the set temperature. ETL listed for safety.

Additional Info :

Brand Electric
Color Unknown
Item Dimensions
Height 19
Width 42
Length 22
Weight 22.83
Bestseller No. 7

Rinnai RL94EN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Outdoor Installation

Popularity Score 9.3
Quality Score 9.7
Sentiment Score 9.5

Highlighted Features

  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 9.8 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand
  • Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively

Additional Info :

Brand Rinnai
Color Silver
Item Dimensions
Height 13
Width 25
Length 24
Weight 61.5
Bestseller No. 8

Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater, 9.5 kW, 6.6" x 12.8" x 2.9", White

Popularity Score 9.4
Quality Score 9.6
Sentiment Score 9.3

Highlighted Features

  • ELECTRIC TANKLESS WATER HEATER: 9.5 kW under-sink tankless water heater designed to provide an endless supply of instantaneous hot water to one or more sinks
  • FLEXIBLE INSTALLATION: Can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible, worry-free setup. Due to the amperage requirement this item will be hard wired.
  • EFFICIENT DESIGN: Ultra compact and lightweight design with 98% efficiency and no stand-by heat loss plus does not require a temperature or pressure relief valve
  • DURABLE PLASTIC CONSTRUCTION: Roundagon Bosch DNA design provides a modern look that blends in seamlessly with existing decor when installed in a visible location and is built of durable plastic housing for long-lasting use
  • IDEAL SIZE: Measures 6.6" x 12.8" x 2.9", making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and offices.

Additional Info :

Brand Bosch
Color Silver
Item Dimensions
Height 20
Width 41
Length 27
Weight 26.3
Bestseller No. 9

Rinnai RL94IN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Indoor Installation

Popularity Score 9
Quality Score 9
Sentiment Score 9.6

Highlighted Features

  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 9.8 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand
  • Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively

Additional Info :

Brand Rinnai
Color Black
Item Dimensions
Height 12
Width 28
Length 21
Weight 64.45
SaleBestseller No. 10

MAREY 4.2 GPM, 105,800 BTUs, Whole House solution, Digital Display, Outdoor Natural Gas Tankless Water Heater, Silver

Popularity Score 9.5
Quality Score 9
Sentiment Score 8.9

Highlighted Features

  • Maximum of 4.2 Gal. per minute for a perfect outdoor shower at 115°F output water temperature.
  • Rated at maximum output 105,800 BTUs for endless hot water
  • No electricity needed: unit ignites with 2 D cell batteries. Perfect for off the grid areas, campsites, cabins or any other location where electricity is not available.
  • Unit comes with a digital display making it easy to adjust water and gas flow to your desired output temperature
  • Portable outdoor shower included

Additional Info :

Brand MAREY
Color White
Item Dimensions
Height 2
Width 39
Length 22
Weight 70.7

What To Look Before Buying Best tankless water heater for whole house

When it comes to choosing the best tankless water heater for whole house for you, it is important to consider several factors. The cost of the tankless water heater for whole house the materials used to make it, its durability, customer ratings, and the warranty or return policy are all important factors to consider.

Cost

Cost is, of course, an important factor. You want to find a tankless water heater for whole house that is affordable, but also one that will last. It is important to find a balance between the two.

Materials

The materials used to make the tankless water heater for whole house are also important. You want to make sure that the tankless water heater for whole house is made from high-quality materials that will last. Also, consider the environment when choosing materials. You may want to choose a tankless water heater for whole house that is made from recycled materials.

Durability

Durability is another important factor. You want to choose a tankless water heater for whole house that will last a long time. Consider how often you will use the tankless water heater for whole house and how it will be used. If you are looking for a tankless water heater for whole house to use every day, you will want something that is very durable.

Customer Ratings

Customer ratings are also important. You want to read reviews of the tankless water heater for whole house before you purchase it. This will give you an idea of how others feel about the tankless water heater for whole house.

Warranty/Return Policy

Finally, consider the warranty or return policy. You want to make sure that you are covered in case the tankless water heater for whole house does not meet your expectations. Many tankless water heater for whole houses come with a warranty or return policy, so be sure to read the fine print before you make your purchase.

Why Are Online Stores Beneficial To Consumers?

There are many reasons to shop online. Here are just a few:

  1. You can shop from the comfort of your own home.
  2. You can avoid crowds at the mall.
  3. You can compare prices more easily.
  4. You can find items that are not available in your local stores.
  5. You can have items delivered to your door.
  6. You can shop at any time of day or night.
  7. You can often find better deals online than you can in local stores.
  8. You can usually find coupon codes for additional savings.
  9. You can read customer reviews before making a purchase.
  10. You can save money on gas.

Are warranties and guarantees the same thing?

When it comes to warranties and guarantees, there are a few key differences that you should be aware of. A warranty is typically provided by a manufacturer and is a promise to repair or replace an tankless water heater for whole house if it proves to be defective within a certain timeframe. A guarantee, on the other hand, is usually offered by the retailer or service provider and promises to refund or exchange an tankless water heater for whole house if the customer is not satisfied.

In general, warranties are more comprehensive than guarantees, covering a wider range of potential problems. However, they also tend to be more expensive, as the manufacturer bears the cost of repairs or replacements. Guarantees, on the other hand, are usually less expensive for the customer, but they may not cover as many different types of defects.

When choosing between a warranty and a guarantee, it is important to consider your needs and budget. If you are concerned about a particular issue, such as a manufacturer’s defect, then a warranty may be the best option. However, if you are looking for more general protection against problems, then a guarantee may be a better choice.

CONCLUSION

Choosing the right tankless water heater for whole house depends on your needs. It is impossible to pick one product as the best. Instead, what matters most is finding the right product for you. With so many options on the market, it can be tough to know where to start. But by doing your research and considering your personal needs, you can find the perfect tankless water heater for whole house for you.

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