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Residential Products
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HomeProductsResidentialWater HeatersMarathon Thermal Storage Tank

Marathon Thermal Storage Tank

MODEL MTS105245
Lifetime Limited Tank Warranty
6-Year Limited Parts Warranty

  • 50, 85 and 105 gallon capacities, 2 port and 3 port configurations
  • Specifically designed for installation as a thermal storage tank
  • Large water connections
  • Tank – impervious to rust, corrosion

SKU MTS105245
Model Marathon Thermal Storage Tank
Fuel Electric
Height 66.75"

Marathon® thermal storage tanks feature a lifetime limited tank warranty and a 6-year limited parts warranty*

Designed for Alternative Energy Applications

  • Specifically designed for installation as a thermal storage tank
  • Backup electrical element provides 40 gallons or more of heated water
  • Large water connections for lower pressure drop
Built to Last!
  • Seamless, blow-molded, polybutene tank – impervious to rust and corrosion
  • Titanium sheath elements for superior resistance to lime build-up
  • Multiple layers of filament wound fiberglass give the tank unmatched strength
  • Tough molded polyethylene outer shell resists dents and scratches
Designed for Easy installation
  • Lightweight
  • Water port fittings located at front of storage tank for convenient access
  • Full port, full flow brass drain valve for fast draining
  • Factory installed temperature and pressure relief valve and vacuum relief valve
Plus…
  • Thermally fused element provides protection against “dry-firing”
  • Bowl shaped bottom allows for complete sediment removal
  • Recessed drain valve is out of the way of brooms and scrubbers

DESCRIPTION 
MARATHON THERMAL STORAGE TANK MODELS
  GAL CAP MODEL NUMBER
50
CMTS50200
85 CMTS852000
105 CMTS105200

Lifetime Limited Tank Warranty
6-Year Limited Parts Warranty

More Residential Rheem Products

Find additional documentation by viewing these related products.

Electric
Marathon
Capacity 12-105
  • High efficiency design and a lightweight tank that won't corrode
  • Seamless polybutene tank – impervious to rust and corrosion
  • 30, 40, 50, 85 and 100 gallon capacities
Electric
Professional Classic Series: Point-of-Use
Capacity 2-30
  • 53 watts loss for 30-gallon model
  • High efficiency heating element
  • Over-temperature protector cuts off power in excess temperature situations

Electric
Professional Classic Series: Standard Electric
Capacity 20-55
  • 56-90 Watts Loss
  • Enhanced-flow brass drain valve
  • 19.9 to 55 gallon capacities