Top 10 Tankless Gas Water Heaters
for August 2022

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.7
SCORE
Camplux 16L Outdoor 4.22 GPM Digital Display Propane Gas Tankless Water Heater

Camplux 16L Outdoor 4.22 GPM Digital Display Propane Gas Tankless Water Heater

by CAMPLUX
What We like

The simple design and high output structure with 88.5% thermal efficiency. You can get instant endless hot water easily wherever you are.

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Product Features

  • Maximum power output at 110,000btu/hour, supply you instant endless hot water at any time.
  • CSA certified gas regulator and quality rubber plastic water hose included.
  • Flame failure device, anti-freezing protection and over heating protection to ensure the safety.
  • 4.22 gallons hot water output per minute with digital temperature display.

Csa certified gas regulator and quality rubber plastic water hose included. 4.22 gallons hot water output per minute with digital temperature display. Maximum power output at 110,000btu/hour, supply you instant endless hot water at any time. Flame failure device, anti-freezing protection and over heating protection to ensure the safety.

2
9.5
SCORE
Rinnai RUCS75iN Tankless Water Heaters, RUCS75iN-Natural Gas/7.5 GPM

Rinnai RUCS75iN Tankless Water Heaters

RUCS75iN-Natural Gas/7.5 GPM

by Rinnai
What We like

Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.

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Product Features

  • RUCS75iN SE Super High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
  • Up to 7.5 GPM hot water flow rate (varies by groundwater temp)
  • Endless hot water for your entire home

Endless hot water for your entire home Up to 7.5 gpm hot water flow rate (varies by groundwater temp) Rucs75in se super high efficiency tankless hot water heater - natural gas: indoor installation only

3
9.3
SCORE
20H Outdoor 6.0 GPM Natural Gas Tankless Water Heater

Eccotemp 20H Outdoor 6.0 GPM Natural Gas Tankless Water Heater

by Eccotemp Systems
What We like

Rated at 6.0 GPM at 150,000 BTU with a temperature rise of 38 degrees this ultra-efficient tankless water heater is ideal for just about every single-family home in the US and Canada. With Advanced incoming and outgoing water temperature sensor technology you always have total confidence when it comes to safety.

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Product Features

  • Rated for 2-3 applications used simultaneously means that taking a shower and running two sinks at the same time is effortless. The Eccotemp 20H is ideal for normal hot water heating applications in ANY size residential single-family home.
  • Advanced Generation 3 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds todays consumer demand needs.
  • CSA certified for installation in the US and Canada. This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE. With an Energy Factor Rating of .83, you can have peace of mind knowing this tankless water heater is ideal for individuals looking to save money.

Advanced generation 3 computer board with high performance processing and smart adjust technology built in. our proprietary developed programming meets and exceeds todays consumer demand needs. Rated for 2-3 applications used simultaneously means that taking a shower and running two sinks at the same time is effortless. the eccotemp 20h is ideal for normal hot water heating applications in any size residential single-family home. Csa certified for installation in the us and canada. this tankless water heater meets and exceeds all safety and efficiency requirements according to the doe. with an energy factor rating of .83, you can have peace of mind knowing this tankless water heater is ideal for individuals looking to save money.

4
9
SCORE
Rinnai Outdoor Tankless Hot Water Heater / RL75eN / Natural Gas / 7.5 GPM, RL75eN-Natural

Rinnai Outdoor Tankless Hot Water Heater / RL75eN / Natural Gas / 7.5 GPM

RL75eN-Natural

by Rinnai
What We like

Professional Installation Recommended, call 833-746-6212 for assistance. Endless hot water for your entire home

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5
8.9
SCORE
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

by Rheem
What We like

Intelligent electronic controls designed to increase energy efficiency and safety

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Product Features

  • Third party efficiency listed by AHRI
  • 94-Percent Energy efficient with stainless-steel condensing heat exchanger
  • Low Nox Version
  • Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe

Low nox version Third party efficiency listed by ahri 94-percent energy efficient with stainless-steel condensing heat exchanger Up to 38-feet of 3-inch pvc pipe or 5-feet of 2-inch pvc pipe

6
8.7
SCORE
Eccotemp 45HI-NG Indoor 6.8 GPM Natural Gas Tankless Water Heater, White

Eccotemp 45HI-NG Indoor 6.8 GPM Natural Gas Tankless Water Heater

White

by Eccotemp Systems
What We like

Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.

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Product Features

  • 4" Venting is required for the indoor models. Venting is available for purchase separately or you can purchase the unit and vent kit as a bundle.
  • The indoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there.
  • Whole home indoor,Natural Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome!

Whole home indoor,natural gas powered tankless water heater, rated at 6.8 gpm that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome! The indoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there. 4" venting is required for the indoor models. venting is available for purchase separately or you can purchase the unit and vent kit as a bundle.

7
8.3
SCORE
MAREY GA24CSANG 8.34GPM, High Efficienty, CSA Certified, Residential Multiple Points of Use Natural Gas Tankless Water Heater, White

MAREY GA24CSANG 8.34GPM

High Efficienty, CSA Certified, Residential Multiple Points of Use Natural Gas Tankless Water Heater, White

by Marey
What We like

DOE

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Product Features

  • CSA Certified
  • Stainless Steel Venting Exhaust
  • Oxygen free copper heat exchanger
  • UL listed
  • Anti-Freeze Protection

Flow activation Led touch screen computerized safety Stainless steel venting exhaust Anti-freeze protection Oxygen free copper heat exchanger Csa certified Ul listed

8
7.6
SCORE
Rheem RTG-84DVLN 8.4 GPM Low NOx Direct Vent Tankless Natural Gas Water Heater

Rheem RTG-84DVLN 8.4 GPM Low NOx Direct Vent Tankless Natural Gas Water Heater

by United Logistics of America
What We like

Low Nox Version

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Product Features

  • UMC-117 remote control and 10-Feet of thermostat wire is included
  • Direct Vent Indoor
  • 8.4 gal/min. at 35-Degree Rise
  • Natural Gas Tankless Water Heater

Direct vent indoor Umc-117 remote control and 10-feet of thermostat wire is included Natural gas tankless water heater 8.4 gal/min. at 35-degree rise

9
7.6
SCORE
Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM Whole House and for Hydronic heating Compare to Rinnai, Rheem,Noritz, Bosch FREE FLUE KIT

GASFLEX Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM Whole House and for Hydronic heating Compare to Rinnai

Rheem, Noritz, Bosch FREE FLUE KIT

by EXCEL
What We like

Certified for Installation in Manufactured (Mobile) Homes Pure Copper Heat Exchanger

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Product Features

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

Delivers 6.6 gpm of hot water with a 35f instant temperature rise (equivalent to 5.5gpm with a 45f temp rise) Modulates heat output in response to the flow rate of water running through the unit. Natural gas - european model - digital display is in celsius Power vented directly vertically (rooftop) or sideways (wall) via stainless steel cat iii flue 3.5" diameter included (20")

10
7.6
SCORE
American Standard TCWH180S-AS-NG 180,000 BTU Tankless Natural Gas Ultra Low Nox Condensing Water Heater

American Standard Water Heaters American Standard TCWH180S-AS-NG 180

000 BTU Tankless Natural Gas Ultra Low Nox Condensing Water Heater

by American Standard
What We like

Durable - both the primary and secondary heat exchangers are constructed of 304 Grade stainless Steel

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Product Features

  • Certified - these units hold both ANSI z2.1.10.3/csa 4.3 certifications and are designed for indoor wall mounting
  • Eco friendly - ultra low NOx combustion system compatible for both natural gas and liquid propane. These units are also field convertible from one gas source to another
  • Superior thermal efficiency - with energy conservation in mind, these units maintain an impressive 96% efficiency rating
  • Energy Star & ETL certified - uses 14% to 55% less energy than equipment that meets minimum federal standards.Gas valve system:Air ratio valve

Superior thermal efficiency - with energy conservation in mind, these units maintain an impressive 96% efficiency rating Certified - these units hold both ansi z2.1.10.3/csa 4.3 certifications and are designed for indoor wall mounting Eco friendly - ultra low nox combustion system compatible for both natural gas and liquid propane. these units are also field convertible from one gas source to another Energy star & etl certified - uses 14% to 55% less energy than equipment that meets minimum federal standards.gas valve system:air ratio valve

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