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
Showing 1-6 of 6
Display:
Sort by:
Refine your results
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (6)
  • (4)
  • (2)
  • (2)
  • (4)
Try our Water Heater Selector
Use our
Water Heater Selector
Find your Water Heater
Showing 1-6 of 6
Display:
Sort by:
filter
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
|
View Model
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
Showing 1-6 of 6
Try our Water Heater Selector
Use our
Water Heater Selector
Find your Water Heater
Get it installed by a Local Pro
Get it installed by a

Local Pro

State Water Heaters are available through your local plumbing professional.
Find a Local Pro
of 2
selected
of 4
selected
Select 2-4 Products Compare Now
Clear Filters