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- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- X3® Scale Prevention Technology—Maintains like-new performance
- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- X3® Scale Prevention Technology—Maintains like-new performance longer, extends life up to 3x longer*
- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- X3® Scale Prevention Technology—Maintains like-new performance longer
- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- Add X3® Scale Prevention with bypass cartridge to maintain like-new performance (sold separately)
- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- Add X3® Scale Prevention with bypass cartridge to maintain like-new performance (sold separately)
- ENERGY STAR® certified with a UEF of 0.95
- 15-year warranty on heat exchanger
- Add X3® Scale Prevention with bypass cartridge to maintain like-new performance (sold separately)
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
- ENERGY STAR® Certified with a UEF of 0.95
- Delivers up to 10.5 GPM maximum flow rate
- 15-year heat exchanger warranty
Showing 1-15 of 64
Frequently Asked Questions
Tankless gas water heater prices vary by capacity, efficiency rating, and features. Point-of-use and entry-level models start at the lower end, while whole-home condensing models sit at the premium end. Factor in installation costs as well, which vary depending on your existing gas line and venting setup.
Lifespan depends on water quality, usage, and regular maintenance. Reliance gas tankless models carry a 15-year limited warranty, and select condensing models with X3® Scale Prevention Technology last up to three times longer than standard tankless units.
Sizing starts with two variables: the temperature rise your incoming water requires, and the flow rate your home needs at peak usage. Add up the GPM of fixtures running simultaneously, then factor in your groundwater temperature, since colder climates demand more heating capacity.
