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Model # MSR50245

Internet # 202584260

Store SKU # 1001410975

50 gal. Short 4500-Watt Lifetime Electric Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$899.00 /each
  • 50 gallon tank provides ample hot water for a 2 - 3 bath home
  • Electric water heater is easy to maintain
  • Same-day installation in most areas. Call 1-855-650-2786 by noon.


Model # MSR50245

Internet # 202584260

Store SKU # 1001410975

Store SO SKU # 607988

The 50 gal. Short Marathon lifetime electric water heaters provides hot water with peace of mind. Plastic tank eliminates the need for anode rod and prevents smelly water. Rigid foam insulation covers entire tank for maximum efficiency. Bowl-shaped tank bottom drains completely for easy service and sediment removal Lower titanium steel heating element for superior resistance to lime buildup. Factory installed temperature and pressure relief valve offers added protection. Lifetime limited warranty on tank and 6 year limited warranty on parts. Meets or exceeds National Appliance Energy Conservation Act (NAECA) requirements.

  • Lifetime limited warranty on the tank, plus a 6-year limited warranty on the parts for your convenience
  • Meets or exceeds NAECA requirements
  • Bowl-shaped tank bottom drains completely for easy service and sediment removal
  • Plastic tank eliminates the need for an anode rod and prevents smelly water
  • Non-metallic tank and jacket resists corrosion
  • Thermally-fused upper element protects against dry firing
  • Meets new 2015 NAECA Standards

    NAECA Standards

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
28.25 in 
Tank Valve Size (in.) 
Water Connection Size (in.) 
Application Type 
Finish Family 
First Hour of Delivery (gallons/hr) 
Fuel Type 
Maximum Temperature (F) 
Minimum Temperature (F) 
Product Weight (lb.) 
101 lb 
Tank Capacity (gallons) 
Water Connection Location 
Water Heater Features 
Overheat Protection,Temperature Pressure Relief Valve 
Water Heater Profile 
Wattage (watts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 
ENERGY STAR Certified 
Labor Warranty 
No Warranty 
Part Warranty 
6 Year 


Rated 4.4 out of 5 by 46 reviewers.
Rated 5.0 out of 5.0 by hot water I thought when I provided an unlimited supply of hot water my wife would forget about Steve. She didn't. She run off with Steve. I'll bet Steve doesn't have an unlimited supply of hot water. I hate Steve. I give it 5 stars because it works and was easy to install. February 27, 2015
Rated 5.0 out of 5.0 by Energy Efficient Choice, Life Time Warranty In our area, propane is now more expensive than electricity, so it made sense for us to now convert some of our household appliances from propane to electric versions. Top of the list was our on demand propane water heater. We replaced it with this 50 gl. Super Insulated Water Heater. There is tank type electric water heater which has a better efficiency rating, but it has a fan on top which makes noise while gathering heat from the air in the space to elevate the temp of tap water. I liked this tank for many reasons... first, it is light weight when empty, so I did the installation by myself. The inside tank and exterior are non-corrosive polymer materials... the inside tank being reinforced with spun glass (I viewed the manufacturer's production video). Traditional tank heaters will eventually corrode, even with the cathodic protection that must be periodically replaced. This unit should never require replacement due to corrosion inside or out. The original purchaser given a life time warranty... as long as you own your home. That's a winner for me! We are on whole house solar, so cutting down on all our energy use is key. This water heater has proven to be a smart move, as it remains at temp longer due to super insulation. I have to say that the unit we received doesn't appear like the one in the photo for this listing. It's much larger in diameter and shorter in appearance... I will post a photo of our unit as installed. If you have a tight water heater closet, you may want to carefully measure the diameter of the unit you are purchasing, as this is larger than others I've seen... This unit is more than adequate for a family of four and is definitely the right choice for us being on solar and wanting something that truly conserves our electrical use. I would highly recommend it if you can get over the sticker shock... Figure out if you benefit from converting from propane to electric. Compare what you pay for 27 kwh of electricity with what you currently pay for 1 gl of propane If you are solar powered, electricity is the clean choice anyway... This tank will out last YOU get one December 29, 2011
Rated 5.0 out of 5.0 by I have had a Marathon water heater in another home, it is excellent. as stated above I have had & seen a cut away view of this product it is great. July 28, 2015
Rated 5.0 out of 5.0 by Excellent It was a very easy install, even though we had a plumber do it for us. He commented that will be the last water heater you will need. Not to mention it's very nice looking and heats the water fast, we have not run out of water, and we have 3 bathrooms. July 7, 2015
Rated 5.0 out of 5.0 by The best water heater we've ever owned This is by far the very best water heater we have ever owned. We installed a 50 gal unit, 11 years ago, and still today we have had to do nothing to it at all. No leaks, rust, just good efficiency. We are adding on to the house and glad homedepot sells these now since this price is way better than what we paid over 11 years ago. Glad to see them selling these. October 28, 2011
Rated 5.0 out of 5.0 by You get what you pay for... You can buy 3 glass-lined metal hot water tanks for the $900 I spent on this tank, but I think it is a good investment. Western PA water eats glass-lined metal tanks, and with no anode, our hot water doesn't have the awful sulfur odor so common here. My only disappointment - the 'lifetime' warranty on the tank is only 15 years if you don't keep the sales receipt. No option to register with Rheem; keep the receipt or lose the lifetime warranty. A copy of mine is in a plastic bag taped to the inside of the element cover. March 20, 2013
Rated 1.0 out of 5.0 by Tank failed immediately; will not replace We thought we’d made a good decision to install the lifetime non-metallic Marathon after our 4th water heater started rusting. Because of the unusual size, (we ordered the 50-gallon Short), we prepared the site by moving workbenches out of the way, planned for plumbing changes, and built a stand for it. The plumbing and electrical connections were made, and we started to fill the tank. The vacuum relief valve had a slow, steady drip, but we decided to continue, and replace the valve later. When the tank was full, water began appearing everywhere – from the seam around the bottom, from the access panel covers (lower and upper), and from the top of the tank. We shut off the water supply, started draining the tank, and mopping up the flood. It was a mess. It was such a catastrophic failure, that we decided we didn’t want another Marathon. However, returning the water heater involved multiple phone calls with the local Home Depot store, the manufacturer, and Home Depot Online. There was uncertainty at the local store about how to handle an online purchase being returned under full-price warranty. But everything worked out, and now we have store credit and are not obligated to get another Marathon. June 19, 2015
Rated 5.0 out of 5.0 by Working great after 4 years This hot water heater is working great after 4 years. I installed it myself, difficulty was moderate. You do need to know enough to not be afraid of doing the installation, otherwise get a pro. The only thing I did right after installation was turn the water temp down to a little less than 125. This heater has cost an average of $22/month versus $90/month for my old oil fired tank-less coil (part of the furnace). June 6, 2015
  • 2015-07-31T11:05:13.008-05:00
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