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Residential Products
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Marathon Thermal Storage Tank

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

Canada
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 is 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”
  • Options without 4.5kW backup element also available
  • 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 MTS50200
  85 MTS85200
  105 MTS105200
  85 MTS85245

105 MTS105245

85 MTS85345

105 MTS105345

 
50
CMTS50200
85 CMTS852000
105 CMTS105200

Available in Canada

United States
Lifetime Limited Tank Warranty
6-Year Limited Parts Warranty

Canada
Lifetime Limited Tank Warranty
6-Year Limited Parts Warranty

Energy Miser (Globe)CSAULElectric

More Residential Rheem Products

Find additional documentation by viewing these related products.

Electric
Professional Classic Series: Standard Electric
Capacity 30-55
  • .90 - .93 UEF
  • Enhanced-flow brass drain valve
  • 19.9 - 55 gallon capacities
Electric
Professional Classic Series: Point-of-Use
Capacity 2-30
  • .90 UEF for 30-gallon model
  • High efficiency heating element
  • Over-temperature protector cuts off power in excess temperature situations

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
Performance Platinum Gladiator
Capacity 40-55
  • Designed to protect your home, allow remote temperature control and alert you of potential issues
  • Smart water heater with Built-in leak detection, auto water shutoff valve and WiFi
  • High efficiency with .92-.93 UEF
  • Available in 40, 50 and 55 -gallon capacities