Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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10 Best tankless water heaters of 2026
Save up to 20% off
Best Choice1
Rheem9.9Exceptional
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray
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heat output:19 LPM
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is electric:No
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maximum flow rate:7 Gallons Per Minute
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color:Gray
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special feature:Self diagnostic program, hot-start programming, freeze protection, low activation flow rate, EZ-link cable, digital display
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Value for Money2
Rheem9.8Exceptional
Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 7.0 GPM, 160,000 BTUs
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3
Rheem9.7Exceptional
Rheem 18kW 240V Tankless Electric Water Heater, Gray
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4
EcoSmart9.6Exceptional
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
17% Off
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5
Rheem9.5Excellent
Rheem 11kW 240V Tankless Electric Water Heater
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heat output:11 Kilowatts
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is electric:Yes
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maximum flow rate:2.68 Gallons Per Minute
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color:Gray
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special feature:LED Display
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6
xwdzswgs9.2Excellent
110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin Bathroom.
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7
FOGATTI9.0Excellent
FOGATTI Natural Gas Tankless Water Heater Indoor - Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 170S Series
16% Off Limited Time Deal-
heat output:170000 BTU per Hour per Foot per Degree Fahrenheit
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is electric:No
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maximum flow rate:7.5 Gallons Per Minute
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color:Gray
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special feature:2 to 5 Years Warranty, CSA Certificated, Easy Indoor Installation, Energy Saving & High Efficiency, Multi-Point Hot Water Supply
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8
FOGATTI8.8Very Good
FOGATTI Natural Gas Tankless Water Heater Outdoor - Max 8.1 GPM 180,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 180S Series, New Upgraded
19% Off Limited Time Deal
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9
Stiebel Eltron8.7Very Good
Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, 28.8kW, On Demand Hot Water, Eco, White, Made in Germany
13% Off
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10
Ranein8.6Very Good
Ranein Propane Gas Tankless Water Heater, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
20% Off Limited Time Deal 00:00:00-
heat output:N/A
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is electric:No
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maximum flow rate:N/A
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color:Gray
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special feature:N/A
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