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AO Smith Products


SMIGPVH-40LP Water Heater Residential Liquid Propane 40 Gal ProMax Power Vent 40,000 BTU


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.

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  • Height: 63"

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Discontinued No longer available.

For millions of consumers, business owners, property managers and engineers worldwide, A. O. Smith has delivered innovative hot water solutions for over 70 years. Sold exclusively by plumbing wholesalers and plumbing contractors, A. O. Smith’s selection of residential and commercial water heaters, boilers and storage tanks is unmatched for quality and diversity. Anywhere hot water is needed, A. O. Smith can provide an energy-efficient solution with maximum value during and for years after installation. And, A. O. Smith stands behind its products and its customers with world-class service, combining cutting-edge technology with committed people who take pride in being the very best.   Available at AppliancesConnection


The ProMax® Power-Vent 40 residential gas water heaters are equipped with A. O. Smith’s patented C3 Technology® design, and meet Phase II of the ANSI Z21.10.1 standards for flammable vapor ignition resistance. In addition A. O. Smith has engineered other enhancements into its power-vent design, for easier installation and maximum venting flexibility. A power-vent water heater provides an alternative to conventional vertical-vent models, which require the use of a metal vent. They provide a solution to potential venting problems in replacement applications and offer versatile options for placement of gas water heaters in residential new construction.


•Water heater residential
•Hot surface ignition
•CSA certified and ASME rated T and P relief valve
•Versatile power vent design
•Vents with PVC, CPVC, and ABS
•Coregard aluminum anode
•Fvir compliant
•Extra long dynaclean diffuser dip tube
•External heat trap nipples, pipe installation, and T and P insulation
•6-year tank / 6-year parts limited warranty
•Recovery cap. 90°F Rise GPH: 44 


•Intended Household:2-3 Person
•Fuel Type:Liquid Propane
•Gallons Capacity:40
•BTU Input:40,000
•Gas Connection:.5"
•Water Connection:.75"
•Vent Size:2"
•1st Hour Delivery (Gallons):69
•Energy Factor:0.65 

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  • Brand:AO Smith
  • UPC:671657798789
  • Stock Id:256356
  • Product Number:SMIGPVH40LP


  • Fuel Type:Liquid Propane


  • Height:63"

    Technical Details

  • Application:Plumbing
  • Diameter:18.5"
  • BTU Input:40,000
  • Vent Size:2"
  • Water Connection:.75"
  • Gas Connection:.5"
  • Energy Factor:0.65
  • Intended Household:2-3 Person
  • 1st Hour Delivery (Gallons):69
  • Gallons Capacity:40
  • Weight:157.00 lbs