Residential Gas Tankless Water Heaters

Residential Gas Tankless Water Heaters

Reliance offers a complete line of natural gas and liquid propane tankless water heaters for continuous hot water needs. Choose from condensing models that are ENERGY STAR® certified or non-condensing models.
Reliance Water Heaters
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Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater with X3® Scale Prevention
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater with X3® Scale Prevention Model RTI-199X3-N 100
  • 199,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 15-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Indoor Natural Gas Tankless Water Heater with X3® Scale Prevention
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Indoor Natural Gas Tankless Water Heater with X3® Scale Prevention Model RTI-180X3-N 100
  • 180,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 15-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater Model RTI-199B-N 100
  • 199,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 12-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Indoor Natural Gas Tankless Water Heater Model RTI-180B-N 100
  • 180,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 12-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Outdoor Natural Gas Tankless Water Heater with X3® Scale Prevention
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Outdoor Natural Gas Tankless Water Heater with X3® Scale Prevention Model RTO-199X3-N 100
  • 199,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 15-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Outdoor Natural Gas Tankless Water Heater with X3® Scale Prevention
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Outdoor Natural Gas Tankless Water Heater with X3® Scale Prevention Model RTO-180X3-N 100
  • 180,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 15-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Outdoor Natural Gas Tankless Water Heater
Standard Non-Condensing Ultra-Low NOx 199,000-BTU Outdoor Natural Gas Tankless Water Heater Model RTO-199B-N 100
  • 199,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 12-year limited warranty on heat exchanger in residential applications
View Model
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Outdoor Natural Gas Tankless Water Heater
Standard Non-Condensing Ultra-Low NOx 180,000-BTU Outdoor Natural Gas Tankless Water Heater Model RTO-180B-N 100
  • 180,000 BTU input
  • Max Flow Rate of 10.5 GPM
  • 12-year limited warranty on heat exchanger in residential applications
View Model
Showing 1-8 of 8
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