Our rankings are generated through the algorithmic analysis of thousands of customer reviews about products, brands, merchant customer service levels, popularity trends, and more. We use advanced technology, including AI, to help process and organize this information at scale, supporting our analysis with greater speed and consistency. The rankings reflect our opinion and should be a good starting point for shopping.
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9 Best tankless water heaters of 2026
Save up to 31% off
Best Choice1
NOVIEEX9.9Exceptional
18kW Tankless Water Heater Electric, NOVIEEX 240V 3s Instant Hot Water Heater, Flow Rate Max 4.9 GPM, Supply for 2-3 Points, Indoor Installation, Ideal for Apartment, Garage, Salon, Bathroom, Kitchen
31% Off-
Water Inlet Size:3/4" NPT
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Voltage:240V
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Maximum Flow Rate:4.9 GPM
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Dimensions:11.14" x 15.86" x 3.18"
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Temperature Range:77°F to 140°F
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Value for Money2
Orbek9.8Exceptional
ORBEK RV Tankless Water Heater, Propane, 12V DC, For RV Family & Camper
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3
YIHUIBF9.7Exceptional
110V Tankless Water Heater Electric, YIHUIBF 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin
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4
EcoSmart9.6Exceptional
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
20% Off
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5
xwdzswgs9.5Excellent
Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin
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Water Inlet Size:N/A
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Voltage:110V
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Maximum Flow Rate:N/A
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Dimensions:N/A
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Temperature Range:82°F (0.3GPM) - 131°F (0.5GPM)
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6
Rinnai9.3Excellent
Rinnai RX199iN Condensing Smart Sense Tankless Water Heater
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7
Rheem9.1Excellent
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
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Water Inlet Size:N/A
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Voltage:240V
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Maximum Flow Rate:N/A
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Dimensions:N/A
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Temperature Range:80-140 degrees F
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8
xwdzswgs9.0Excellent
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin
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9
CAMPLUX ENJOY OUTDOOR LIFE8.8Very Good
CAMPLUX 5L Portable Tankless Water Heater, 1.32 GPM Outdoor Propane Shower for Camping, RV, Off-Grid, Instant Hot Water with Folding Handle, Overheat Protection, Low Pressure Startup, AY132, White
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