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MRCOOL Natural Gas Tankless Water Heater

Save $670.00 Save $670.00
Original price $2,199.00
Original price $2,199.00 - Original price $2,199.00
Original price $2,199.00
Current price $1,529.00
$1,529.00 - $1,529.00
Current price $1,529.00

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MRCOOL Natural Gas Tankless Water Heater 

Unlike traditional water heaters, the MrCool® Natural Gas Tankless Water Heater provides neverending hot water to up to four bathrooms and multiple home appliances simultaneously. With a high volume and flow rate, this tankless heater is highly efficient while still being environmentally friendly.

This compact and space-saving heater has a much longer lifespan thanks to the stainless steel, corrosion resistant engineering. This design has four times the corrosion resistance of copper and is lead free. One of the many high tech features of this unit is the electronic thermostatic PCB, which provides intelligent temperature control and gas flow that is automatically controlled.

The EDM BLDC variable-speed fan provides stable combustion along with a smooth air flow transition. The combustion chamber is surrounded by water tubes making it a thermal insulator also. The environmentally-friendly premixed burner gives a reduction of NOx emissions, lowers the flame temperature, and reduces port-loading. You can experience the most comfortable shower experience thanks to the self-adapting temperature regulation. A large touch-screen display provides helpful information to you and your plumber about the heater’s operation.

This unit must be installed by a professional and offers a 15-year heat exchanger warranty, a 5-year parts warranty, and a 5-year service warranty. This MrCool® Natural Gas Tankless Water Heater will replace your old water heater and provide efficiency and effectiveness.


  • Meets SCAQMD Standards
  • UNSPSC: 52141700
  • Not mobile home compatible
  • Min Temp: 95 F / Max Temp: 140 F
  • Maximum Gallons per Minute: 8.45g/min
  • Flow Rate @ 35°F Rise (gallons/min): 10.7
  • Flow Rate @ 45°F Rise (gallons/min): 8.3
  • Flow Rate @ 55°F Rise (gallons/min): 6.8
  • Flow Rate @ 65°F Rise (gallons/min): 5.8
  • 92% Uniform Energy Factor (UEF)
  • PSI: 7-140



11.02" D x 26.77" H x 17.32" W 

Heating Capacity 

199000 BTU

Fuel Type 

natural gas







Number of Burners


Min Ambient Heat 

Hot water outlet: NPT3/4in

Drain Connection Size 

Cold water inlet: NPT3/4in

Gas Connection Size 

Gas inlet: NPT3/4in

Ignition Type 

Direct Electric Ignition

Vent Connector 

2 in. or 3 in. or concentric

Overload Protection 

Freeze Protection: Yes

Wifi Compatibility


App Compatibility


CSA Listed 


CSA Certified


Energy Star Certified 


Base Warranty

5 year service

Base Parts Warranty

5 year parts

Base Heat Exchanger Warranty

15 year heat exchanger

Proposition 65 Warning 


Net Weight 

68.34 lbs

Gross Depth 


Gross Height 


Gross Width


Gross Weight 

73.85 lbs

Condenser Weight 

Heat Exchanger Weight: 24.03 lbs

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