Our Top 10 Recommendations for Tankless Gas Water Heaters

Up-to-date pricing and reviews for tankless gas water heaters on the market

Bestseller No. 1

V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
Endless hot water for your entire home
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

SaleBestseller No. 2

SaleBestseller No. 3

Endless hot water for your entire home
V65eN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Bestseller No. 4

RU199iN Sensei SE+ Super High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
Up to 11 GPM hot water flow rate (varies by groundwater temp)
15,000 BTU (Minimum) / 199,000 BTU (Maximum)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Endless hot water for your entire home

Bestseller No. 5

Whole home indoor, gas powered tankless water heater, rated at 3 GPM that activates only on demand and no pilot light needed, reducing energy consumption
Sleek, modern design with black tempered glass front panel featuring an easy to use LED display controls
Features fully automatic temperature controls with an energy saving mode and child lock technology
Safe electronic ignition system; Plugs into standard 110v electrical outlet with UL-listed cord. Field tested to 5500 ft. elevation (not recommended to be used any higher)
Uses standard 1/2" NPT water fittings and comes with horizontal venting allowing for a convenient and quick installation

Bestseller No. 6

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

SaleBestseller No. 7

Modulates heat output in response to the flow rate of water running through the unit.
Power vented directly vertically (rooftop) or sideways (wall) via Stainless Steel CAT III Flue 3.5" Diameter Included (20")
NATURAL GAS - European Model - Digital Display is in Celsius
Delivers 6.6 gpm of hot water with a 35°F Instant Temperature Rise (Equivalent to 5.5gpm with a 45F temp Rise)
Certified for Installation in Manufactured (Mobile) Homes Pure Copper Heat Exchanger

Bestseller No. 8

Endless hot water for your entire home
RL75iN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
Up to 7.5 GPM hot water flow rate (varies by groundwater temp)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

SaleBestseller No. 9

94-Percent Energy efficient with stainless-steel condensing heat exchanger
Intelligent electronic controls designed to increase energy efficiency and safety
Third party efficiency listed by AHRI
Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe
Low Nox Version

Bestseller No. 10

External adjustable digital thermostatic control with LED display (+/1 degree accuracy
Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM