Marathon Gas Water Heaters
Marathon filters
No Marathon gas water heaters in our catalog
Marathon doesn't currently ship any gas water heaters we track. Try one of the alternatives below.
Marathon Gas Water Heaters: buyer's guide
Marathon doesn't currently ship any gas water heaters in the lineup we track. If you're shopping for gas water heaters, see the full Gas category for cross-brand options.
About Marathon
Marathon (Rheem) — subsidiary of Rheem. Specialty water-heater manufacturer serving the US market.
For the complete Marathon lineup across all sub-types and capacities, see the Marathon Water Heaters hub.
Other Gas water heaters brands
If you're cross-shopping gas water heaters beyond Marathon, the following brands also ship in this category:
About Gas Water Heaters water heaters
Natural gas water heaters dominate US residential water heating where natural gas service is available — roughly 49% of US homes have gas water heaters. They split into tank (40/50/75/80-gallon storage with gas burner) and tankless (on-demand condensing) sub-types, with venting variations (atmospheric chimney, power-vent PVC, direct-vent sealed combustion) that determine which install scenarios fit.
- Operating cost: natural gas is consistently the cheapest residential water heater fuel by per-BTU pricing in most US markets — typically 50–60% of equivalent electric resistance cost
- Recovery speed: a 40,000 BTU gas burner delivers ~40 GPH at 90°F rise — tw...
For the complete gas buyer's guide (all brands, full comparison framework), see the Gas Water Heaters category hub.
Other Marathon filters
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