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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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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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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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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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ProLine® XE 50-Gallon Ultra-Low Nox Atmospheric Vent Natural Gas Water Heater
ProLine® XE 50-Gallon Ultra-Low Nox Atmospheric Vent Natural Gas Water Heater Model GUF-50
  • 83-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 40-Gallon Ultra-Low Nox Atmospheric Vent Natural Gas Water Heater
ProLine® XE 40-Gallon Ultra-Low Nox Atmospheric Vent Natural Gas Water Heater Model GUF-40
  • 68-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 40-Gallon Power Direct Vent Natural Gas Water Heater
ProLine® XE 40-Gallon Power Direct Vent Natural Gas Water Heater Model GPDL-40L
  • 74-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 50-Gallon Power Vent Natural Gas Water Heater
ProLine® XE 50-Gallon Power Vent Natural Gas Water Heater Model GPVX-50L
  • 119-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 50-Gallon Power Direct Vent Natural Gas Water Heater
ProLine® XE 50-Gallon Power Direct Vent Natural Gas Water Heater Model GPDT-50
  • 81-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 40-Gallon High Efficiency Flue Damper Tall Natural Gas Water Heater
ProLine® XE 40-Gallon High Efficiency Flue Damper Tall Natural Gas Water Heater Model GCF-40
  • 70-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 40-Gallon High Efficiency Flue Damper Short Natural Gas Water Heater
ProLine® XE 40-Gallon High Efficiency Flue Damper Short Natural Gas Water Heater Model GCFL-40
  • 65-gallon first hour rating
  • 6-Year Warranty
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ProLine® XE 75-Gallon Power Direct Vent Natural Gas Water Heater
ProLine® XE 75-Gallon Power Direct Vent Natural Gas Water Heater Model GPDX-75L
  • 76,000 BTU input
  • 129-gallon first hour rating
  • 6-Year Warranty
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Showing 1-15 of 32
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