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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.

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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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 175,00 BTU input
  • 222-gallon recovery rate
  • 10-Year Warranty
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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
  • 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
  • 32,000 BTU input
  • 65-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
  • ENERGY STAR® certified
  • 124-gallon first hour rating
  • 6-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
  • ENERGY STAR® certified
  • 130-gallon first hour rating
  • 6-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-130
  • 130,000 BTU input
  • 165-gallon recovery rate
  • 10-Year Warranty
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Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater
Energy Star
High Efficiency
Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater Model GSP-130
  • 130,000 BTU input
  • 165-gallon recovery rate
  • 10-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-199
  • 199,000 BTU input
  • 253-gallon recovery rate
  • 10-Year Warranty
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Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater
Energy Star
High Efficiency
Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater Model GSP-100
  • 100,000 BTU input
  • 170-gallon first hour rating
  • 10-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-150
  • 150,000 BTU input
  • 190-gallon recovery rate
  • 10-Year Warranty
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Showing 1-15 of 98
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