AO Smith ProLine XCG-50 Residential Natural Gas Water Heater with 50 Gallons, 40000 BTU, Atmospheric - Tall Model

AO Smith BTH-120 60 Gallon - 120,000 BTU Cyclone Xi Commercial Gas Water Heater

AO Smith BTH-199 100 Gallon 199,000 BTU Cyclone Xi Commercial Gas Water Heater

AO Smith PCG100 ProMax High Recovery 98-Gallon Residential 75100 BTU Water Heater with 10-Year Warranty

AO Smith GDV-40 40 Gallon Promax Direct Vent Residential Water Heater

AO Smith SMIGCRT-50 Residential Gas Water Heater with 50 Gallon Capacity, Intelligent Control Logic and Green Choice 50,000 BTU Gas Burner

AO Smith GCRL50 ProMax 50 Gallon Residential Gas Water Heater with Green Choice Gas Burner, Heat Trap Nipples, Blue Diamond Glass Coating, and DynaClean Diffuser Dip Tube

AO Smith PCG75 61" High 74 Gallon ProMax High Recovery 10 Yr Warranty Residential Water Heater Nat Gas

AO Smith SMI GCG-50 GCG ProMax 50 Gallon 6 Year Warranty Residential Natural Gas Water Heater Tall Mode

AO Smith SMIFCG75 74 Gallon ProMax High Recovery 6 Year Warranty Residential Water Heater Nat Gas

AO Smith BTH-500A Commercial Tank Type Water Heater Nat Gas 130 Gal Cyclone Xi 499,900 BTU Input High Efficiency

AO Smith BTR-500A Commercial Tank Type Water Heater Nat Gas 85 Gal Master-Fit 500,000 BTU Input

AO Smith GPVX-75L 75 Gallon - 72,000 BTU ProMax Power Vent Residential Natural Gas Water Heater with Side Connection