Water heater
Water heater diagram

Water Heaters


Long Life

he seamless, blow molded polybutylene tank is impervious to rust and corrosion.
Multiple layers of filament wound fiberglass give the tank unmatched strength.

The tank is designed, built and warranted not to leak "for as long as you own your home". 

Energy Efficiency

Envirofoam insulation is free of ozone depleting CFC's and HCFC's so it saves the planet-and it saves energy.
Pipe Wrap Energy Kit is included to reduce heat loss from plumbing lines.  


Recessed drain valve is out of the way of brooms and scrubbers.
Tough molded outer shell resists dents and scratches.
Bowl shaped bottom allows more complete sediment draining.


Factory installed Temperature and Pressure Relief valve for greater value and security.
Conduit between control boxes facilitates wiring for "Off-Peak" use.
All plastic tank eliminates the need for an anode rod - preventing potential odor problems.

Model Gallons A B C
MR50245* 50 23.5" 62.75" 66.75"
MR85245* 85 28.25" 66.25" 70.25"

Lake Region Electric Water Heater Rebates

Members of Lake Region Electric are eligible for rebates when they purchase a Marathon Electric water heater and connect it to a load management device for a period of not less than 1 year. Rebates are $6.00 per gallon of capacity.

Gallons 50 85 105
Rebate $300 $510 $630


To qualify for the rebate, the following requirements must be met:

  1. The new water heater must be installed where it will be used daily.
  2. The new water heater must be installed at a location served by Lake Region Electric
  3. The new water heater must be hooked to the load management program.

Lake Region Electric Load Management Program

Lake Region Electric actively promotes the use of load management to it's members. Receivers are installed by Lake Region Electric or a qualified electrician at our expense.

Control of the receivers is done by East River Electric Power Cooperative, in Madison, South Dakota. Load Management is implemented when electricity use in Eastern South Dakota reaches a predetermined point or "peak". Signals are sent over the power lines to the receivers, which then cycle the load.

In the case of water heaters, the "off time" can be as long as 4.5 hours, with an "on time" of approximately 1 hour. After the "peak" passes the receivers are again sent a signal which restores the water heater to normal operation.

All residential members of Lake Region Electric using an electric water heater are eligible to participate in the load management program. Participating in the program also entitles members to a credit of $4.00 per month on the member's electric bill.

For more information contact Brett Kwasniewski or visit the Marathon(link is external) website.