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85 Gal.Tall 4500-Watt Lifetime Electric Water Heater
  • Marathon
  • Model # MHD85245
  • Internet # 205931620

85 Gal.Tall 4500-Watt Lifetime Electric Water Heater


Compare to Discontinued Model View Product

Discontinued Model



Model # MR85245

Internet # 202584261

85 gal. Tall 4500 Watt Lifetime Electric Water Heater

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

  • Plastic tank wont rust; ideal in hard water applications
  • Lightweight jacket and tank make it easier to install
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.




Model # MR85245

Internet # 202584261

The 85 gal. Tall Marathon lifetime electric water heater provides hot water with peace of mind. Plastic tank eliminates the need for anode rod and prevents smelly water. Rigid foam insulation covers the entire tank for maximum efficiency. Bowl-shaped tank bottom drains completely for easy service and sediment removal Lower titanium 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.

  • First hour rating of 91 gal. per hour
  • Lifetime limited warranty on the tank, plus a 6-year limited warranty on the parts for your convenience
  • 0.92 energy factor signifies a high-efficiency heater
  • 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
  • Factory-installed temperature-and-pressure relief valve enhances your safety and offers peace of mind
  • Thermally-fused upper element protects against dry firing
  • Lower element is made of titanium steel for resistance to lime buildup

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.) 
139 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 4.5 out of 5 by 90 reviewers.
Rated 1.0 out of 5.0 by Would have loved it, if it didn't leak and if HD had an overflow pan to fit ti.. Rheem provided prompt warranty service and my defective unit was accepted at HD without issue. That's the good news. This unit failed about a week into service. This is a very large anode free (plastic tank?) unit and the brass fittings to tank connections are apparently the weak link. My unit started leaking inside the outer shell where the pressure relief valve mounts to the (presumably plastic) inner tank. Unfortunately, when water cascades from the top of the unit it splashes over the bottom seam and won't all be caught by a 32" diameter drain pan (which HD doesn't sell but I found at Amazon) so water damage is a very real potential. Rheem did provide me the option to attempt repair of leaky "threaded" connection but after confirming water coming from between the shell & tank I was advised that it was not field repairable. Both Rheem & HD were very easy to deal with - unnecessarily wrestling a 105 gallon water heater about, not so much. A plastic, anode free tank is a great concept but every connection has to be bulletproof. February 16, 2015
Rated 5.0 out of 5.0 by Great Water Heater Ordered this water heater a few weeks ago. HD matched a lower price at Menards. Delivery was exactly on time, with a lift truck to drop off at my home on pallet. Surprised at how light it was. Had done a lot of research and this unit always came out on top and with a lifetime tank warranty and excellent recovery time. I used this unit to replace 2 80 gallon units that had lasted 28 years. It is well made and installation was incredibly easy- took about 20 minutes total. Had hot water in less than 20 minutes. All looks great and only hope it lasts 25 years ! Highly recommend. April 30, 2013
Rated 5.0 out of 5.0 by Should be the last water heater I buy. The installation was easy. I only needed to buy brass nipples and flex tubing to connect. Should last forever. The only thing that might fail is the heater element. February 18, 2014
Rated 1.0 out of 5.0 by Got an extra $150 for a busted heating element I read the reviews prior to purchasing this unit. I thought the people that received a new unit with a bad element in it was just a fluke.....that is until I received mine!!! We had it installed and it would not heat up. Called the company and they agreed to send a new hearing element right away. Sounds nlike it was not a big deal right? But My plumber had to reroute the plumbing back to the old waterheater until the new element arrived. Then I had to pay the plumber an additional $150 to come back and install the new element and route the plumbing back to the new heater. So that was money I wouldn't have spent but because of a bad product here we go. Of course they are not reimbursing for the additional service call. So if you plan on buying one of these.....better put an extra $150 to the side!!!! July 11, 2015
Rated 5.0 out of 5.0 by An amazing hot water tank I bought this electric water tank because our old gas needed to be replaced. This tank is always cold to the touch because of the insulation that it has. Meaning the heat stay in and does not escape. Another thing that I never thought of is that our neighbour has one and when his basement flooded the tank floated and the tank did not need to be replace due to water damage like it would happen with a gas or regular electric. Thank you Rheem for putting research into this new type of water heater. September 11, 2015
Rated 5.0 out of 5.0 by Good looking water heater? Never thought I'd say that. I never thought I'd say there is a good looking water heater. The Marathon 85 gal. is cool looking. We call it our cryogenic tank due to its size, finish and looks. We have been using it for three weeks and so far it is perfect. It was very easy to install. You do need about 25% more space in all directions than a comparable WH. It has a large amount of insulation. The 85 gallon unit will not fit in a standard drain pan or if your old WH only has a couple inches of open space around it you will need to do some careful measuring. Don't forget the height. You could need to alter the plumbing above the WH to make room for this unit. All fittings are standard size (3/4"), male hot water, female cold water and pressure release. If you need to replace the heating element you can NOT just pick one up at the local plumbing supply store. You will need to oder one from Rheem. They range from about $50 - $90 depending on the type (Reg., SS, Titanium). No anode needed. September 4, 2011
Rated 3.0 out of 5.0 ok till you need a element I fed back that this is a good product and one element was replaced by rheem on warranty. The second element shorted out 2 months later and I thought I could get one locally, no chance in my area. I would reccommend getting both elements to keep onhand or you will be without hotwater several days. I found a element online that is supposed to work as a upper or lower although it is not a titanum one like the advertised specs say on the rheem replacement part number. These elements have a bigger diameter 1.5 nf thread so the normally stocked local ones won't fit. I'm not sure if the original part is titanium or just the replacement ones. 5 years is about the life of the original ones it seems. There is only two people in my household so this water heater is not cycle very much I would think. August 26, 2015
Rated 5.0 out of 5.0 by Quality Built 85 gallon tank is large, but it fits for my application. Being used in a solar thermal hot water application for both storage and normal electric heat. Live in Phoenix, AZ with lots of sunshine. With "evacuated tubes" as my solar collector I have not needed any electric heat for the past 3 weeks. Rheem water heater is awesome. Do not overtighten the fittings! Specialized for this tank. February 14, 2012
  • 2015-11-30 T09:42:27.982-06:00
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