Marathon 100-Gallon Water Heaters
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No Marathon 100 gallon water heaters in our catalog
Marathon doesn't currently ship a 100 gallon water heaters we track. Try one of the alternatives below.
Marathon 100-Gallon Water Heaters: buyer's guide
Marathon doesn't currently ship a 100 gallon water heaters in the lineup we track. If you're shopping for 100-gallon water heaters water heaters, see the full 100 Gallon 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 100 Gallon water heaters brands
If you're cross-shopping 100 gallon water heaters beyond Marathon, the following brands also ship in this category:
- Rheem 100 Gallon
- AO Smith 100 Gallon
- Bradford White 100 Gallon
- State 100 Gallon
- Lochinvar 100 Gallon
- Triton 100 Gallon
- Niagara 100 Gallon
About 100-Gallon Water Heaters water heaters
The 100-gallon water heater is a true commercial-residential capacity — sized for light-commercial applications and estate-class residential where demand exceeds the standard 75-gallon residential maximum. 100G water heaters carry commercial warranties (typically 3 years) reflecting their higher duty cycle.
- AO Smith Cyclone Mxi 100G Commercial Gas (BTH-150) — 150,000 BTU, 290 GPH FHD, 94% thermal efficiency.
- Rheem Performance 100G Electric (EE100T6-100) — high-capacity electric.
- Bradford White Powerflex / Genesis 100GFor the complete 100 gallon buyer's guide (all brands, full comparison framework), see the 100-Gallon Water Heaters category hub.
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