Quick Comparison of 20 Tankless Water Heaters

Check out our latest tankless water heaters comparison chart!

Here we have made a comparison chart that compares 20 top rated tankless water heaters.

This chart includes tankless water heaters from various brands such as Bosch, Eccotemp, Ecosmart, Marey, Navien, Noritz, Rinnai, Rheem, Stiebel Eltron and Takagi.

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product Reviews

Fuel Type

Flow Rate/  
# of Showers  (Warm climates)

Flow Rate/  
# of showers   (Cold climates)

Whole House or
Point-of-use

rating  out of  5 stars

Price 

Electric

6 GPM/3

3 GPM/1.5

Whole House (unless in colder climate)

4.85

best rated tankless water heater

Electric

5 GPM/2.5

2.8 GPM/1.5

Whole House (unless in colder climate)

4.9


Electric

7.5 GPM/3.5

4.2 GPM/2

Whole House

5

best rated tankless water heater

Electric

6 GPM/3

3 GPM/1.5

Whole House (unless in colder climate)

4.7

Check Price​​​

Propane

10 GPM/5

7 GPM/3.5

Whole House 

4.7

Natural Gas

6.6 GPM/3

3.2 GPM/1.5

Whole House (unless in colder climate)

4.7

Takagi TH3DV TH3 Series 199000 review

Natural Gas

10 GPM/4

6 GPM/2.5

Whole House

4.6

rinnai best natural gas tankless heater

Natural Gas

7.5 GPM/3.5

5.1 GPM/2.5

Whole House

4.7


Natural Gas or Propane

9.4 GPM/4.5

6.5 GPM/3

Whole House

4.6

Propane

9.4 GPM/4.5

6.5 GPM/3

Whole House

4.7

Propane

9.5 GPM/4.5

6.5 GPM/3

Whole House

4.8

Electric

3.17 GPM/1.5

2 GPM/1

Point-of-Use

4.5

Propane

2.5 GPM/1.5

1.5 GPM/1

Point-of-Use (Portable)

4.6

Natural Gas

9.8 GPM/4.5

7 GPM/3.5

Whole House

4.5

Rheem RTG-84DVLN review

Natural Gas

8.4 GPM/4

6 GPM/3

Whole House

4.3

Natural Gas

9.5 GPM/4.5

6.6 GPM/3.25

Whole House

4.5


Natural Gas

11.2 GPM/5.5

8 GPM/4

Whole House

4.4

noritz nrc98 review

Natural Gas or Propane (LP)

9.8 GPM/5

6.7 GPM/3.25

Whole House

4.0

 Propane (LP)

3.1 GPM/1.5

1.5 GPM/1

Point-of-Use

3.8

Rinnai V65EN Natural Gas


Natural Gas

6.6 GPM/3.25

4.7 GPM/2.25

Whole House

4.7

We hope this chart will be very useful if you're wanting a quick comparison of our top rated tankless water heaters. We have compared the products based on their customer reviews, fuel type, flow rates, type of use, our ratings and price. 

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