ProLine Residential Gas Tankless Water Heaters

Residential Gas Tankless Water Heaters

State Water Heaters presents a comprehensive lineup of natural gas and propane tankless water heaters, ensuring uninterrupted hot water supply. Select from ENERGY STAR® certified condensing models for maximum efficiency or non-condensing models for reliable performance tailored to your preferences.

State Water Heaters
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Adapt™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
Adapt™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model STHR-199X3 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU input
  • 15-year limited warranty
|
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Adapt™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
Adapt™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model STHR-180X3 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
View Model
Adapt™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
Adapt™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model STHR-160X3 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU input
  • 15-year limited warranty
|
View Model
Adapt™ Premium Condensing 199,000 BTU Natural Gas Tankless Water Heater
Energy Star
Adapt™ Premium Condensing 199,000 BTU Natural Gas Tankless Water Heater Model STHR-199M 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU input
  • 15-year limited warranty
|
View Model
Adapt™ Premium Condensing 180,000 BTU Natural Gas Tankless Water Heater
Energy Star
Adapt™ Premium Condensing 180,000 BTU Natural Gas Tankless Water Heater Model STHR-180M 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
View Model
Adapt™ Premium Condensing 160,000 BTU Natural Gas Tankless Water Heater
Energy Star
Adapt™ Premium Condensing 160,000 BTU Natural Gas Tankless Water Heater Model STHR-160M 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Outdoor Natural Gas Tankless Water Heater with X3® Technology
Energy Star
ProLine® XE Outdoor Natural Gas Tankless Water Heater with X3® Technology Model GTS-240X3-NEH 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Indoor Natural Gas Tankless Water Heater with X3® Technology
Energy Star
ProLine® XE Indoor Natural Gas Tankless Water Heater with X3® Technology Model GTS-340X3-NIH 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Outdoor Natural Gas Tankless Water Heater with X3® Technology
Energy Star
ProLine® XE Outdoor Natural Gas Tankless Water Heater with X3® Technology Model GTS-540X3-NEH 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Indoor 180,000 BTU Condensing Natural Gas Tankless Water Heater
Energy Star
ProLine® XE Indoor 180,000 BTU Condensing Natural Gas Tankless Water Heater Model GTS-340-NIH 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Indoor 180,000 BTU Condensing Propane Tankless Water Heater
Energy Star
ProLine® XE Indoor 180,000 BTU Condensing Propane Tankless Water Heater Model GTS-340-PIH 101
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
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ProLine® XE Outdoor Liquid Propane Tankless Water Heater with X3® Technology
Energy Star
ProLine® XE Outdoor Liquid Propane Tankless Water Heater with X3® Technology Model GTS-540X3-PEH 101
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Indoor Liquid Propane Tankless Water Heater with X3® Technology
Energy Star
ProLine® XE Indoor Liquid Propane Tankless Water Heater with X3® Technology Model GTS-340X3-PIH 101
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Outdoor 199,000 BTU Condensing Propane Tankless Water Heater
Energy Star
ProLine® XE Outdoor 199,000 BTU Condensing Propane Tankless Water Heater Model GTS-540-PEH 101
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU input
  • 15-year limited warranty
|
View Model
ProLine® XE Outdoor 160,000 BTU Condensing Natural Gas Tankless Water Heater
Energy Star
ProLine® XE Outdoor 160,000 BTU Condensing Natural Gas Tankless Water Heater Model GTS-240-NEH 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU input
  • 15-year limited warranty
|
View Model
Showing 1-15 of 83
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State Water Heaters are available through your local plumbing professional.
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