Marathon Heavy Duty Lifetime 85-Gallon Electric Water Heater
Marathon Heavy Duty Lifetime 85-Gallon Electric Water Heater Review
The Marathon Heavy Duty Lifetime 85-Gallon Electric is the heavy-duty variant of the Marathon 85-gallon. Enhanced 6000W heating elements for faster recovery. Polybuthylene tank with lifetime warranty.
Specs: 85 gallons stored, two 6000W heating elements (vs standard 4500W), UEF 0.94, 110-gallon FHR, lifetime tank warranty + 6-year parts warranty.
Heavy Duty differentiators versus standard Marathon 85-gallon: 6000W elements deliver faster recovery (28 gph vs 21 gph at 90°F rise), higher first-hour rating, heavier-duty wiring (40A 240V vs 30A 240V).
About $2,800 unit, $3,400 installed. Right buyer: 6+ person primary residence in long-stay scenario (15+ years), where standard Marathon 85-gallon's recovery rate would be tight under heavy overlapping demand.
- No combustion, no venting required — installs anywhere with 240V electrical access
- Strong UEF 0.92 efficiency — approximately 20% lower annual operating cost vs 0.62 standard
- 99-year warranty — top-tier coverage for residential water heaters
- Large 85-gallon reserve — comfortably serves 5+ person households in peak-use periods
- 130-gallon first-hour rating — handles morning-rush simultaneous demand without shortfall
- Resistance electric has slower recovery than gas at comparable capacity — schedule heavy use to match tank recovery