Back to Marathon (Rheem) Water Heaters
Premium
Tank
Top Pick
Marathon 85-Gallon Lifetime Electric Tank
The only residential water heater with a lifetime tank warranty — never rusts.
0.93 UEF
102 gal/hr
85 gal
Technical Specifications
0.93
UEF Rating
102
1st Hr Rating (gal)
85
Tank Capacity (gal)
Heater TypeTank
Fuel TypeElectric
Installed Price$2,200 – $3,200
Tank WarrantyLifetime
Parts WarrantyLifetime
Labor Warranty1 year
Key Features
Plastic tank construction
Polybutylene dip tube
Non-metallic design
Pros & Cons
Pros
- Lifetime tank warranty
- No anode rod needed
- Will not rust, corrode, or leak
Cons
- Electric only
- Very large footprint
- Heavy (150+ lbs dry)
Best For
Homeowners who never want to replace their tank
Warranty Snapshot
Tank: Lifetime
Parts: Lifetime
Labor: 1 year
Register equipment with the manufacturer after installation to preserve coverage. We handle registration on Homets installs.
Frequently Asked Questions
Ready to Install the 85-Gallon Electric?
Get a free, no-obligation quote for professional water heater installation by licensed plumbers serving Nassau County.