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Residential Gas Tank Water Heaters

From high-efficiency ENERGY STAR® certified water heaters to economical standard efficiency gas water heaters, A. O. Smith has a complete line of natural gas and liquid propane tank water heaters to fit your needs.

A. O. Smith
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ProLine® 40-Gallon Atmospheric Vent Tall Natural Gas Water Heater
ProLine® 40-Gallon Atmospheric Vent Tall Natural Gas Water Heater Model GCR-40 410
  • 40,000 BTU input
  • 80-gallon first hour rating
  • 6-Year Warranty
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ProLine® Master 50-Gallon Ultra-Low NOx Atmospheric Vent Tall Natural Gas Water Heater
ProLine® Master 50-Gallon Ultra-Low NOx Atmospheric Vent Tall Natural Gas Water Heater Model HUR-50 450
  • 40,000 BTU input
  • 84-gallon first hour rating
  • 8-Year Warranty
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Vertex™ 50-Gallon Ultra-Low NOx Power Direct Vent Natural Gas Water Heater
Energy Star
Vertex™ 50-Gallon Ultra-Low NOx Power Direct Vent Natural Gas Water Heater Model GDHE-50 300
  • ENERGY STAR® certified
  • 100-gallon first hour rating
  • 6-Year Warranty
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ProLine® 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater
ProLine® 50-Gallon Atmospheric Vent Tall Natural Gas Water Heater Model GCR-50 400
  • 40,000 BTU input
  • 84-gallon first hour rating
  • 6-Year Warranty
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ProLine® Master 40-Gallon Atmospheric Vent Tall Natural Gas Water Heater
ProLine® Master 40-Gallon Atmospheric Vent Tall Natural Gas Water Heater Model HWR-40 410
  • 40,000 BTU input
  • 80-gallon first hour rating
  • 8-Year Warranty
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Polaris™ 50-Gallon Power Direct Vent Natural Gas Water Heater
Energy Star
High Efficiency
Polaris™ 50-Gallon Power Direct Vent Natural Gas Water Heater Model GTP-175 200
  • 175,00 BTU input
  • 222-gallon recovery rate
  • 10-Year Warranty
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Vertex™ 75-Gallon Ultra-Low NOx Power Direct Vent Natural Gas Water Heater
Energy Star
Vertex™ 75-Gallon Ultra-Low NOx Power Direct Vent Natural Gas Water Heater Model GDHE-75 300
  • ENERGY STAR® certified
  • 130-gallon first hour rating
  • 6-Year Warranty
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ProLine® Master 50-Gallon Ultra-Low NOx Atmospheric Vent Tall Natural Gas Water Heater
ProLine® Master 50-Gallon Ultra-Low NOx Atmospheric Vent Tall Natural Gas Water Heater Model HUC-50 400
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ProLine® 75-Gallon High Recovery Atmospheric Vent Natural Gas Water Heater
ProLine® 75-Gallon High Recovery Atmospheric Vent Natural Gas Water Heater Model PCG-75L 400
  • 75,100 BTU input
  • 125-gallon first hour rating
  • 10-Year Warranty
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ProLine® 30-Gallon Atmospheric Vent Short Natural Gas Water Heater
ProLine® 30-Gallon Atmospheric Vent Short Natural Gas Water Heater Model GCBL-30R 400
  • 32,000 BTU input
  • 65-gallon first hour rating
  • 6-Year Warranty
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Vertex™ High Value Condensing 40 Gallon Ultra-Low NOx Natural Gas Water Heater
Energy Star
Anti-Leak
Vertex™ High Value Condensing 40 Gallon Ultra-Low NOx Natural Gas Water Heater Model HPCT-40L 120
  • ENERGY STAR® Qualified
  • High efficiency operation with up to 0.90 UEF
  • Thermal Efficiency up to 93%
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Vertex™ High Value Condensing 50 Gallon Ultra-Low NOx Natural Gas Water Heater
Energy Star
Anti-Leak
Vertex™ High Value Condensing 50 Gallon Ultra-Low NOx Natural Gas Water Heater Model HPCX-50L 120
  • ENERGY STAR® Qualified
  • High efficiency operation with up to 0.90 UEF
  • Thermal Efficiency up to 93%
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Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater
Energy Star
Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater Model GPHE-50 110
  • ENERGY STAR® certified
  • 124-gallon first hour rating
  • 6-Year Warranty
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Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater
Energy Star
Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater Model GPHE-50 120
  • ENERGY STAR® certified
  • 124-gallon first hour rating
  • 6-Year Warranty
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Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater
Energy Star
Vertex™ 50-Gallon Low NOx Power Vent Natural Gas Water Heater Model GPHE-50 130
  • ENERGY STAR® certified
  • 124-gallon first hour rating
  • 6-Year Warranty
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Showing 1-15 of 238
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