10 Best Natural Gas Water Heaters 2021

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

Rinnai V65IN Tankless Water Heater – ⭐ Best Overall Natural Gas Water Heater

V65IN by Rinnai

  • Color: V65iN - Natural Gas/6.5 GPM
  • Weight: 45.6 pounds
  • Dimensions: 14 x 9.3 x 26.9 inches
  • Warranty: See Manufacturer
Rinnai V65IN Tankless Water Heater
  • 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)

Rinnai Outdoor Tankless Hot Water Heater

V65EN by Rinnai

  • Color: White
  • Weight: 47.4 pounds
  • Dimensions: 9.6 x 14 x 24.3 inches
  • Warranty: See Manufacturer
Rinnai Outdoor Tankless Hot Water Heater
  • Max BTU's 120,000
  • Max Energy Factor 0.82
  • Outdoor Installations
  • Meets California and Texas NOx Emissions Standards
  • Lightweight and Compact

Marey Power Gas 10L 3.1GPM Natural Gas Tankless Water Heater – 💲 Best Budget Natural Gas Water Heater

GA10NG by MAREY

  • Color: White
  • Weight: 21 pounds
  • Dimensions: 13.6 x 6.9 x 23.6 inches
Marey Power Gas 10L 3.1GPM Natural Gas Tankless Water Heater
  • Compact design saves space and is easy to install almost anywhere
  • Works easily with low levels of water pressure. Only uses gas while water is flowing
  • Provide endless hot water on demand and only as needed
  • Unlimited hot water whenever is needed
  • No electrical connection is required, it's perfect alternative for those homes experiencing frequent power outages
  • Allows water temperature to be controlled
  • Cost-effective and
  • Can last a lifetime, keeping 87% efficiency level

Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater

CA318-NG by CAMPLUX ENJOY OUTDOOR LIFE

  • Color: Black
  • Dimensions: 14.4 x 4.7 x 25.4 inches
Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater
  • Sleek,Modern,Compact Design -Trendy and modern design with unique black glassy front panel featuring an easy to use LED touchscreen controls with Fahrenheit Digital & Display.The compact size - (L)14.4 x (W)4.7 x (H)25.4 inch tankless water heater saves more space than traditional tanks.
  • On-Demand Tankless Water Heater-High water capacity range 0.8 - 4.8 GPM, Camplux high efficiency 3.18 GPM natural gas tankless water heater delivers 3.18 gallons per minute of on-demand endless hot water ensures instant hot water for 2-3 persons home comfortable shower.
  • Multiple Protection Ensure Your Safety- Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety. Fully automatic temperature controls with an energy saving mode and child lock technology.
  • Convenient, Easy Installation -Uses standard 1/2" NPT water fittings and comes with 2.3 inch horizontal venting pipe allowing for convenient and quick installation,great for whole home,small cabins and remote apartments use. You can take Camplux customized wall thimble-WT236 for perfect indoor use.
  • Considerate Customer Service- Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.

Rinnai RU199eN RRU199eN – 👑 Premium Pick

RU199eN by Rinnai

  • Color: RU199en - Natural Gas/11 GPM
  • Weight: 72.5 pounds
  • Dimensions: 22.1 x 14.8 x 33.9 inches
  • Warranty: See Manufacturer
Rinnai RU199eN RRU199eN
  • ENERGY STAR Qualified with Uniform Energy Factor of .92
  • Equipped with Rinnai Circ-Logic - Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures
  • Save energy and reduce utility costs by operating only when hot water is needed

Marey Power Gas 10L 2.7 GPM Natural Gas Digital Panel

GA10NGDP by MAREY

  • Color: Silver
  • Weight: 7 pounds
  • Dimensions: 6.9 x 13.6 x 23.6 inches
Marey Power Gas 10L 2.7 GPM Natural Gas Digital Panel
  • Digital Temperature Display
  • Compact design saves space and allows for easy installation just about anywhere
  • Does not require electricity (operates with 2 D Cell battery)
  • Only uses gas while water is flowing
  • Saves water and up to 60% less electricity than conventional tank water heater, making it cost effective and

Camplux Tankless Water Heater Natural Gas

CA318W-NG by CAMPLUX ENJOY OUTDOOR LIFE

  • Color: White
  • Dimensions: 14.4 x 4.7 x 25.4 inches
Camplux Tankless Water Heater Natural Gas
  • Sleek,Modern,Compact Design -Trendy and modern design with unique black glassy front panel featuring an easy to use LED touchscreen controls with Celsius Digital & Display.The compact size - (L)14.4 x (W)4.7 x (H)25.4 inch tankless water heater saves more space than traditional tanks.
  • Multiple Protection Ensure Your Safety- Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety. Fully automatic temperature controls with an energy saving mode and child lock technology.
  • On-Demand Tankless Water Heater-High water capacity range 0.8 - 4.8 GPM, Camplux high efficiency 3.18 GPM natural gas tankless water heater delivers 3.18 gallons per minute of on-demand endless hot water ensures instant hot water for 2-3 persons home comfortable shower.
  • Convenient, Easy Installation -Uses standard 1/2" NPT water fittings and comes with 2.3 inch horizontal venting pipe allowing for convenient and quick installation,great for whole home,small cabins and remote apartments use. You can take Camplux customized wall thimble-WT236 for perfect indoor use.
  • Considerate Customer Service- Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.

Camplux Pro Residential Tankless Water Heater Natural Gas

WA528-NG by CAMPLUX ENJOY OUTDOOR LIFE

  • Color: White
  • Weight: 35.27 pounds
  • Dimensions: 23.4 x 15 x 5.9 inches
Camplux Pro Residential Tankless Water Heater Natural Gas
  • On-Demand Tankless Water Heater-Camplux advanced 5.28 GPM high efficiency flow control natural gas tankless water heater delivers 5.28 gallons per minute of on-demand endless hot water to suit medium- and smaller-sized homes. Automatically activates on water pressure between 7.0-150 PSI.
  • Constant & Sustainable Hot Water Solution -CSA certified balanced combustion design ,features with over-high wind pressure safety protection,Ipx4 water resistant protection, over-loaded electric protection,fan failure protection, equipped with PCB start up self-test &real-time intelligent monitoring, timely warning of potential gas fire and hydro power to ensure your family's safety.
  • Affordable & Efficient Savings -PCB frequency conversion intelligent control, temperature intelligent adjustment, environmental protection and durability, truly outstanding energy saving. Man-machine dialogue, heating without waiting. This residential constant model saves time, money and energy while producing safe, endless hot water for whole home at an affordable rate.
  • High Thermal Efficiency & High-Rise Wind Resistance-Phosphorus deoxidized copper heat exchanger with high temperature and corrosion resistance technology for full combustion and high thermal efficiency up to 92% . It can resist grade 8 wind speed and 240Pa high anti-wind pressure. Additionally, a wind pressure sensor is added to perceive the external wind force in real time and automatically adjust the fan, flame and maintain stable combustion.
  • Considerate Customer Service -Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.

Noritz NR50ODNG Outdoor Tankless Water Heater

NR501-OD-NG by Noritz

  • Weight: 33 pounds
  • Dimensions: 10.7 x 17.6 x 26.6 inches
  • Warranty: 12 Year Heat Exchanger, 5 Year Parts, 1 Year Labor
Noritz NR50ODNG Outdoor Tankless Water Heater
  • Endless hot water
  • Ideal for outdoor applications
  • High Efficiency
  • Low Nox

Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM

JSD10D 10D by GASFLEX

  • Color: White
  • Dimensions: 14.5 x 5.5 x 23 inches
Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM
  • 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

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