lochinvar residential tankless water heaters

Residential Tankless Water Heaters

Lochinvar features tankless water heating solutions that are radically simple, brilliantly engineered.

Lochinvar
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XCalibur™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater Model LTHR-199X3 100
  • ENERGY STAR® certified (0.95 UEF)
  • 199,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater Model LTHR-180X3 100
  • ENERGY STAR® certified (0.95 UEF)
  • 180,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater Model LTHR-160X3 100
  • ENERGY STAR® certified (0.95 UEF)
  • 160,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater Model LTHR-199M 100
  • ENERGY STAR® certified (0.95 UEF)
  • 199,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater Model LTHR-180M 100
  • ENERGY STAR® certified (0.95 UEF)
  • 180,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater Model LTHR-160M 100
  • ENERGY STAR® certified (0.95 UEF)
  • 160,000 BTU/hr
  • 15-Year Warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model LTM-199X3-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU/hr
  • 15-year limited warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model LTM-180X3-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU/hr
  • 15-year limited warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater with X3® Scale Prevention Technology Model LTM-160X3-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU/hr
  • 15-year limited warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 199,000 BTU Natural Gas Tankless Water Heater Model LTM-199M-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 199,000 BTU/hr
  • 15-year limited warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 180,000 BTU Natural Gas Tankless Water Heater Model LTM-180M-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 180,000 BTU/hr
  • 15-year limited warranty
View Model
XCalibur™ Standard Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater
Energy Star
XCalibur™ Standard Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater Model LTM-160M-N 100
  • ENERGY STAR® certified with a UEF of 0.95
  • 160,000 BTU/hr
  • 15-year limited warranty
View Model
Ultra-Low NOx Indoor Natural Gas Tankless Water Heater with X3® Technology
Energy Star
Ultra-Low NOx Indoor Natural Gas Tankless Water Heater with X3® Technology Model LTI-340X3-N 100
  • ENERGY STAR® certified
  • 180,000 BTU/hr
  • 15-Year Warranty
View Model
Ultra-Low NOx Outdoor Liquid Propane Tankless Water Heater with X3® Technology
Energy Star
Ultra-Low NOx Outdoor Liquid Propane Tankless Water Heater with X3® Technology Model LTO-540X3-P 101
  • ENERGY STAR® certified
  • 199,000 BTU/hr
  • 15-Year Warranty
View Model
Ultra-Low NOx Outdoor Natural Gas Tankless Water Heater with X3® Technology
Energy Star
Ultra-Low NOx Outdoor Natural Gas Tankless Water Heater with X3® Technology Model LTO-240X3-N 100
  • ENERGY STAR® certified
  • 160,000 BTU/hr
  • 15-Year Warranty
View Model
Showing 1-15 of 68
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