Top 10 Natural Gas Tankless Water Heater – Water Heaters

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1. Rinnai

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Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM

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Rinnai #ad - V65in he high efficiency tankless Hot Water Heater - Natural Gas: Indoor Installation Only. 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. Endless hot water for your entire home. Up to 6. 5 gpm hot water flow rate varies by groundwater temp.
BrandRinnai #ad
ManufacturerRinnai #ad
Height26.9 Inches
Length14.04 Inches
Weight45.6 Pounds
Width9.27 Inches
Part NumberV65IN
ModelV65IN
WarrantyResidential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

2. Rinnai

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RU199in-Natural Gas/11 GPM, Rinnai RU199iN Tankless Water Heaters

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Rinnai #ad - Hot water is available when you need it! Residential factory warranty - 120 months heat exchanger, 12 months labor, 60 months parts. Up to 11 gpm hot water flow rate varies by groundwater temp. Endless hot water for your entire home. Circ-logic technology allows you to set recirculation patterns that coincide with your typical habits. Ru199in sensei se+ super high efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only.
BrandRinnai #ad
ManufacturerRinnai #ad
Height31.3 Inches
Length18.5 Inches
Weight64 Pounds
Width11.45 Inches
Part NumberRU199iN
ModelRU199iN
WarrantyResidential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

3. Rinnai

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Rinnai V65EN Outdoor Tankless Hot Water Heater V65EN-Natural Gas/ 6.3 GPM, Large, White

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Rinnai #ad - Max energy Factor 082. Outdoor Installations. Meets california and Texas NOx Emissions Standards. Max btu's 120, 000 Lightweight and Compact.
BrandRinnai #ad
ManufacturerRinnai #ad
Height24.3 Inches
Length9.6 Inches
Weight47.4 Pounds
Width14 Inches
Part NumberV65EN
ModelV65EN
WarrantyResidential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

4. Rheem

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

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Rheem #ad - Low nox Version. Direct Vent Indoor. Umc-117 remote control and 10-Feet of thermostat wire is included. 8. 4 gal/min. Natural gas Tankless Water Heater. At 35-degree Rise.
BrandRheem #ad
ManufacturerUnited Logistics of America #ad
Height26 Inches
Length14 Inches
Weight54 Pounds
Width10 Inches
Part NumberRTG-84DVLN
ModelRTG-84DVLN

5. MAREY

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

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MAREY #ad - Ul listed. Flow activation. Oxygen free copper heat exchanger. Doe. Stainless Steel Venting Exhaust. Anti-freeze Protection. Led touch screen Computerized Safety. Csa certified.
BrandMAREY #ad
ManufacturerMarey #ad
Height26.2 Inches
Length7.3 Inches
Weight40.8 Pounds
Width17.1 Inches
Part NumberGA24CSANG
ModelGA24CSANG
Warranty5 years limited parts, no labor

6. GASFLEX

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

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GASFLEX #ad - Power vented directly vertically rooftop or sideways wall via Stainless Steel CAT III Flue 3. 5" diameter Included 20". Certified for installation in Manufactured Mobile Homes Pure Copper Heat Exchanger. Modulates heat output in response to the flow rate of water running through the unit. 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.
BrandGASFLEX #ad
ManufacturerEXCEL #ad
Height23 Inches
Length14.5 Inches
Width5.5 Inches
Part Number0707239100098
ModelJSD10D 10D

7. CAMPLUX

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Camplux CA528 5.28 GPM Indoor Natural Gas Water Heater,Grey

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CAMPLUX #ad - Have a question? give us a call at 844 538-7475. It can resist grade 8 wind speed and 240Pa high anti-wind pressure. Enjoy & comfortable constant hot waterthis residential model is powered by 120 vac voltage, double adjustment of water and air, features imported PCB with precise temperature control, on-demand hot water, never blow hot and cold in turn, and rising of the third gear making it perfect for a hot shower at home!Camplux CA528 can produce a quick endless hot shower for years to come! Please take the Camplux customized vent pipe CP-70 together for better performance.

Automatically activates on water pressure between 7. 0-150 psi. This residential constant model saves time, truly outstanding energy saving. 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. Man-machine dialogue, money and energy while producing safe, temperature intelligent adjustment, endless hot water for whole home!. 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.

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%. Features co multiple protection ensures safety, 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. Advanced safety features-csa certified balanced combustion design required air combustion from the outdoor and the combustion city produced by the smoke forced out of the outdoor to ensure fresh indoor air, safe and reliable use.
BrandCAMPLUX #ad
ManufacturerCAMPLUX #ad
Height22.2 Inches
Length14 Inches
Weight32.3 Pounds
Width5.9 Inches
Part NumberCA528G-NG
ModelCA528GNG

8. Eccotemp

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

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Eccotemp #ad - 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.

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. Apartment or townhome! . The eccotemp 45h/hi series is csa certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience. The indoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there. Comes with a temperature and pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.
BrandEccotemp #ad
ManufacturerEccotemp Systems #ad
Height6 Inches
Length22 Inches
Width15 Inches
Part Number45HI-NG
Model45HI-NG
Warranty5 year manufacturer warranty on parts, 10 year on heat exchanger

9. Thermoflow

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On Demand Instant Hot Water Heater with Self-Modulating Temperature Technology, CSA Certified Wall Mounted, Thermoflow 12KW at 240V Tankless Water Heater Electric

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Thermoflow #ad - Required wire: 1 × 8 AWG. Upgraded internal on demand endless hot water - instant hot water for small apartment or point of use, constant supply of hot water whenever and however long you need, eliminate waiting time and never run out of hot water; Flow rate 1.

8gpm at 45°F temp. Rise and 1. 3gpm at 65°F temp. Rise. Lcd digital display shows output temperature, which allow you to adjust temperature in 1-degree increments; temperature range 104-140°F. Please verify it is the right size for you: dimensions: 13. 6" x 7. 9" x 4. 8" ; weight: 5. 4 lbs; pipes fittings :1/2 inch npt; electrical requirements: 12 KW at 240 volts. Energy and cost saving - heating water only when it's needed with heating efficiency up to 99%, savings of up to 50% on water heating costs; minimal activation flow rate 058gpm.

Easy installation and durable - compact and wall-mounted design with quality stainless steel heating elements, CSA certified, thermo cut-off protection, IP24 protection, ensuring a long service life. Required breakers:1 x 2-POLE 60 AMP. Breakers and wire are NOT included; 24months warranty and timely customer service support.
BrandThermoflow #ad
ManufacturerThermoflow #ad

10. Rinnai

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Rinnai RL75iN Natural Gas Tankless Water Heater, 7.5 Gallons Per Minute

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Rinnai #ad - Comes standard with mc-91-1US Digital Controller with Error Code Indicator. 82% thermal Efficiency. Residential temperature Settings: 98°F - 140°F. 10, 300 - 180, 000 btu. Commercial temperature settings: 98°F - 160°F commercial controller must be purchased separately.
BrandRinnai #ad
ManufacturerRinnai #ad
Height23 Inches
Length14 Inches
Weight50 Pounds
Width9.3 Inches
Part NumberRL75iN
ModelRL75iN
WarrantyResidential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)