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Best Natural Gas Tankless Water Heaters 2020

February 19, 2020 Stuart Trevino Leave a Comment

A natural gas tankless water heater should provide you with a steady source of hot water. The unit must have features that save energy and be cost-efficient. These heaters are available at different prices that range from reasonably priced to expensive. Just check out our recommendations below so we can help you choose the best natural gas water heater with the features and functions you require.

5. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

best takagi t kjr2 in ng natural gas water heater

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  • Item dimensions: 6.7″ x 13.8″ x 20.3″
  • Item weight: 38lbs
  • Ignition: Electric
  • Installation Type: Indoor
  • Made in: Japan
  • Warranty: 15-year Limited
Pros
Has freeze, overheating and surge protection safety features.
Complies with lead-free standards and has remote control.
The unit is ignited by electricity.
Cons
The tank can run out of hot water prematurely.
May come with manufacturer defects.
The computer needs to be installed separately and reset continuously.

Bottom Line

The Takagi natural gas water heater has 140,000 BTUs and 6.6GPM max flow rate. The water connection is located at the bottom of the unit, and it requires 4-inch category III stainless steel venting. It also has inlet and outlet thermistors for constant temperature monitoring. This unit is made for small homes and can deliver water for up to two bathrooms. You should use this unit in warm climates to get better heating results.

4. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater

best rinnai ruc98in ultra series natural gas water heater

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  • Item dimensions: 10″ x 18.5″ x 26″
  • Item weight: 85lbs
  • Ignition: Electric
  • Installation: Indoor
  • Made in: Japan
  • Warranty: 12-year Limited
Pros
The unit has an advanced condensing technology system.
The tank has Wi-Fi capabilities and can be controlled from any location.
Uses less energy and only heats water when needed as opposed to traditional tanks.
Cons
The temperature range commercial controller is purchased separately.
Hot water takes a long time to heat up and reaches fixtures slowly.
Parts may require replacement frequently.

Bottom Line

With this Rinnai tankless gas heater, you get a space-saving unit with ultra-low NOx emissions. Also, you can choose between concentric or a PVC venting option. Moreover, it has 199,000 BTUs and a 0.96 energy factor. The condensing technology makes the heating system more effective and provides more energy savings. This Rinnai tankless heater is the best natural gas water heater for businesses, you can also look at this list and find more Rinnai tankless water heaters options. The bypass technology and Circ-Logic recirculation system delivers hot and cold water when necessary and saves energy.

3. Rheem RTG-64DVLN Prestige Low NOx Tankless Natural Gas Water Heater

best rheem rtg 64DVLN natural gas water heater

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  • Item dimensions: 14″ x 10″ x 26″
  • Item weight: 54lbs
  • Ignition: Electric
  • Installation Type: Indoor
  • Made in: Japan
  • Warranty: 12 years
Pros
Can connect the EcoNet mobile application.
Has a self-diagnostic system and easy installation.
Comes with a digital remote and thermostat wire.
Cons
Installation may require to re-run the gas line.
The unit may crash after a few years of usage.
The tank is prone to water leakage.

Bottom Line

A Rheem natural gas water heater has a remote control that can be operated within 10-feet of the unit to control the thermostat. This unit meets the Low Nox emission standards, moreover, it has a compact design and saves energy. It has a concentric vent system and integrated condensate collector as well. This unit is the best natural gas water heater for small homes and perfect for cottages. Furthermore, it provides a reliable amount of hot water and can be used in cold climates. Moreover, if you are a fan of Rheem products, you can also try the Rheem RTGH 95DVLN GPM.

2. Marey Gas 10L Tankless Water Heater

best marey gas 10L tankless natural gas water heater

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  • Item dimensions: 28.1″ x 15.7″ x 9.3″
  • Item weight: 24lbs
  • Ignition: 2D cell batteries
  • Installation Type: Outdoor
  • Made in: China
  • Warranty: 5 years
Pros
The water heater does not require any electricity for usage.
Has a compact design that saves space.
Heats water quickly and activated once fixtures are turned on.
The rustproof design reduces the risk of water leaks.
Cons
It works only on batteries.
Can only hold 10L of water at a time.
Not for use for large home or offices.

Bottom Line

A Marey gas water heater can save you energy and water, it holds up to 10L of water and does not require electricity to run. Your water heats up in a matter of seconds and continually flows until it is not needed. The gas and water controls are adjustable, and it has an anti-combustion feature. This is the best natural gas water heater for outdoor use and for when electricity is not available. As well as for off the grid areas that require hot water. If you are generally interested in gas tankless heaters, you can also look at our best gas tankless water heaters recommendations.

1. Vevor 10L Natural Gas Hot Water Heater

best vevor 10l natural gas natural gas water heater

Check Price
  • Item dimensions: 23.6″ x 15.7″ x 15.7″
  • Item weight: 19.84lbs
  • Ignition: 2D Cell Batteries
  • Installation Type: Indoor
  • Made in: China
  • Warranty: 2 Years
Pros
Has a thin shape and comes with a shower kit.
Has over water pressure and over heat protection function.
The unit can fit onto the wall and save space.
Cons
May require professional installation.
Must have proper ventilation when in use.
Cannot be installed in the bathroom.

Bottom Line

Vevor has created a water heater, made of stainless steel that holds 10L of water. You can mount this unit onto the wall and save space due to its compact design, meanwhile, the water pressure function saves energy. It also has anti-freezing feature and a manifold auto protection safety feature. This is the best natural gas water heater for use in small areas that require a steady flow of hot water. You can use it in hot or cold climates and off the grid as well.

Wrap Up

A natural gas tankless water heater requires less installation time and is a healthier alternative. They continue to work during power outages and reduce your carbon footprint. These units preserve water and reduce the amount of your electric bill. Once you begin using a gas hot water heater, please let others know about its numerous benefits.

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