My Account My Account Icon Rebate Rebate Icon Update Update Icon Top Arrow Top Arrow Down Arrow Down Arrow Article Article Appliances Connection Blog Appliances Connection Blog Facebook Facebook Twitter Twitter Google+ Google+ YouTube YouTube Pinterest Pinterest Instagram Instagram Houzz Houzz Video Video Star Star Share This Share This Print Print Free Shipping Free Shipping No Interest No Interest No Sales Tax No Sales Tax 30 Day Returns 30 Day Returns Rewards Program Rewards Program Trade Program Trade Program
  • MSRP: $860.00
  • Extra Savings: -$261.00
Today's Price: $599.00
& Free Shipping
You Save: $261.00 (30.35%). Ends 09/20
We Match & Beat Any Price
(Why don't we show the price?)

Retailers have the legal right to set their own prices, but some manufacturers place restrictions on how those prices may be communicated. Because our price on this item is lower than the manufacturer's “minimum advertised price,” the manufacturer does not allow us to show you our price until you place the item in your cart, or in some cases, proceeding to the final checkout stage. Taking these steps allows Appliances Connection to show you our price consistent with our goal of always offering you the lowest possible prices on the widest selection of products. You are not required to purchase the product to see our lowest price, simply just remove it from your cart.

Earn Reward Points


SMI GCR-30LP ProMax 300/301 Series 30 Gallon Liquid Propane Water Heater with Intelligent Control Logic, Green Choice Gas Burner, DynaClean Diffuser Dip Tube and CoreGard Anode Rod Write a review

SMI GCR-30LP ProMax 300/301 Series 30 Gallon Liquid Propane Water Heater with Intelligent Control Logic, Green Choice Gas Burner, DynaClean Diffuser Dip Tube and CoreGard Anode Rod


Items that are currently in-transit to our warehouse, are currently in-stock at a drop-ship vendor’s, or manufacturer's warehouse will be marked as "Available". These products will ship once your order is processed (usually within 24-48 business hours). For any exceptions to this timeframe, an ETA (Estimated Time of Arrival) for your order will be emailed with accurate shipping dates in order to ensure that you are always updated and informed as to when your order will arrive at its final destination.

Quick Specs: View More

  • CSA Certified

Enter zip code for delivery ETA and promotions:


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: 18"
Exterior Width: 18"
Diameter: 18"
Height: 58"
Height with Draft Hood: 61"
Depth: 18"
General Specifications
Series: 300/301
Fuel Type: Gas
Gas Type: Liquid Propane
Capacity (Gallons): 30 
Usage: Residential
Energy Star: No
Other Specifications
Maximum BTU: 32000 
Energy Factor: 0.63 
T&P Relief Valve: Yes
Water Connection Location: Top
Water Connection Size: 0.75"
Emissions: Low NOx
First Hour Rating: 67 Gallons
Recovery Rating per Hour: 36 Gallons
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.

Be the first to ask a question

Ask A Question

Be the first to review this product

Write A Review


  • Brand:AO Smith
  • Stock Id:658551
  • Product Number:GCR-30LP
  • Series:300-301


  • Fuel Type:Gas
  • Capacity (Gallons):30
  • Tankless:No


  • Width:18"
  • Depth:18"
  • Height:58"

    Technical Details

  • Energy Star:No
  • Venting Type:Standard Venting
  • Exterior Width:18"
  • Gas Type:Liquid Propane
  • Maximum BTU:32000
  • Diameter:18"
  • Usage:Residential
  • Energy Factor:0.63
  • Emissions:Low NOx
  • Water Connection Location:Top
  • Height with Draft Hood:61"
  • T&P Relief Valve:Yes
  • Water Connection Size:0.75"
  • Capacity (Gallon):30
  • First Hour Rating:67 gallons
  • Recovery Rating per Hour:36 Gallons
  • Tank and Parts Warranty:6 Years Limited
  • Weight:132.00 lbs