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SMI GCR- ProMax X Gallon Liquid Propane Water Heater with Intelligent Control Logic, Green Choice Gas Burner, DynaClean Diffuser Dip Tube and CoreGard Anode Rod

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  • CSA Certified

Product Description

Designed to deliver an economical performance, you can lower your energy bills and also get access to long-lasting value. Featuring Intelligent Control Logic that use precise sensing for faster heating response, Green Choice Gas Burners that reduces NOx emissions by up to 33%, DynaClean Diffuser Dip Tube that reduces lime and sediment buildup, and CoreGard Anode Rod to extend the life the rod for superior tank protection. Additionally you get a 6-year limited warranty. Available at AppliancesConnection


ProMax heaters are economical water heaters designed for residential households tha need exceptional performers with long-lasting value.

Intelligent Control Logic
The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performance. Using a thermopile, it generates the power needed to operate the electronic gas control without requiring an external power source. The electronic gas control incorporates an LED status indicator that monitors system operation and service diagnostics.

Green Choice Gas Burner
Patented eco-friendly design reduces NOx emissions by up to 33% and complies with low emissions of less than 40 ng/J.

DunaClean Diffuser Dip Tube
Helps reduce lime and sediment buildup, maximizes hot water output. Made from long lasting PEX cross-linking polymer.

CordGard Anode Rod
Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.

How it Works
Gas water heaters work by burning the gas supply, which needs a source of air and also proper ventilation. Cold water enters the water heater through an internal "dip tube" which forces the cold water to the bottom of the tank and pushes hot ware out through the outlet connection. This arrangement provides the most hot water for a given tank size. Most gas water heater uses a pilot light, that may also generate the power needed to operate an electronic gas valve. When cold water enters the tank, the temperature sensor on the gas control tells the main gas valve to open. Gas flows to the burner where it is lit by the pilot light. The air needed by the burner is supplied by the room where the heater is installed. The exhaust gases are vented to the outside. When the proper temperature is reached, the main gas valve shuts off. Since water can corrode the steel tank, we glass line the inside of the tank and install an anode rod to help reduce corrosion. The temperature and pressure relief valve is a safety device designed to open if the internal temperature or pressure of the tank exceeds certain limits. Water heaters should be large enough to provide adequate hot water even when the temperature is cold and household demand is at its greatest. 

Other Features

  • 6-year limited warranty
  • CSA certified
  • Blue Diamond Glass Coating
  • Green Choice: the Eco-friendly gas-fired burner


Width: "
Exterior Width: "
Diameter: "
Height: 58"
Height with Draft Hood: "
Depth: "
General Specifications
Series: 300/301
Fuel Type: Gas
Gas Type: Liquid Propane
Capacity (Gallons):  
Gellons Per Minute:  
Usage: Residential
Energy Star: No
Other Specifications
Maximum BTU:  
Energy Factor:  
T&P Relief Valve: Yes
Water Connection Location: Top
Water Connection Size: 0.75"
Emissions: Low NOx
First Hour Rating:  
Venting Type: Standard Venting
Tank and Parts Warranty: 6 Years Limited


Green Choice® Eco-Friendly Gas Burner

Green Choice® Eco-Friendly Gas Burner

Patented Low NOx burner reduces emissions by up to 33% and complies with less than 40 ng/j requirements for Low NOx.

CSA Certified

CSA Certified

The Canadian Standards Association registered mark shows that a product has been independently tested and certified to meet recognized standards for safety or performance.


  • Brand: AO Smith
  • Stock Id: 658529
  • Product Number: GCR-

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