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Marathon Water Heaters

Get into hot water and stay there with a Marathon water heater from your cooperative. Marathon water heaters are simply the best available. A Marathon water heater could be the last one you ever buy. The standard 50-gallon tank is guaranteed against leaks for as long as you own your home.  If it fails, they replace it and if you sell your home, the tank carries a 10 year warranty the balance of which you transfer to the new owners!  All other size tanks carry a 10 year warranty.

Check out the following illustration to see the Marathon difference. 

 Other benefits include

  • Efficiencies of 92 - 94%.

  • Envirofoam™ insulation is completely free of CFC and HCFC ozone depleting gases. Marathon leads the way in environmental friendly manufacturing, design and operation.

  • No messy burners, local pollution or carbon monoxide worries.

  • Tank comes complete with a factory installed vacuum relief valve, ¾" brass tee and ¾" brass nipple for easy, professional installations.

  • Unique high temperature dip tube is offset from the concave bottom, creating a "whirlpool effect" which helps prevent sediment build-up.

  • Replaceable brass drain valve.

  • All wiring run in conduit for easy control wiring.

  • Seamless blow molded polybutylene tank with no anode rod required for a corrosion free life.

  • Available in sizes ranging from 15 to 105 gallons.


Sizing your Marathon

The most common means of sizing a water heater is to use the capacity of your current heater. However, needs change and if you think you need a different size unit, the following table from Marathon will be helpful:

# in Family

1 - 2

3 - 4

5 - 6

> 6

Tank Size


30, 40 or 50

50 or 85



If you have a high demand item such as a Jacuzzi, you should purchase the 85 gallon model at a minimum.

Another consideration in which size tank to purchase is where it will be installed. Why is this important? Marathon water heaters boast some of the thickest insulation in the industry which makes them wider and taller than their steel counterparts. So, measure your loaction to be sure the Marathon will fit. The following table gives you the diameter and height to the top of the fittings.

All new Marathon Water heaters are sold with a load control device (DRU) installed (which doesn't add to your cost), we can give you a one time bill credit, provide an ongoing monthly bill credit and you join hundreds of other members who participate in our Beat the Peak to reduce power costs for the entire cooperative. The possible rebates are noted below.

But best of all, a Marathon water heater is economical! A typical family of four with a 50 gallon tank can expect to pay about $47.00 per month for their hot water needs.


Current Pricing (as of 8/17/2018)

Marathon Pricing
Gal Member
50  $     819.00
85  $     1,176.00
105  $     1,312.00


Find Out More

We keep a small inventory Marathon tanks on hand and they can be installed by any contractor of your choosing or you can install it yourself. Complete installation instructions are available with each unit. Give us a call today at 1.973.875.5101 for more information or e-mail us at: You can also go to Marathon's website here.

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