Customer Reviews for Rheem Marathon 50 gal. 4500 -Watt Tall Electric Water Heater with Lifetime Tank Warranty and 240 volt Connection

We had a Marathon tank that we had 16 years with no problems. The tank cracked because one of the glued in fittings came lose. We replaced it with another one. We have only had our new water heater for a couple of months. I love how well insulated they are and how long they last.

We didn't receive the item ho this is shown as delivered ?

This heater is amazing have no issues or problems with it . And install was simple enough.

This is a 6-month review. I purchased two of these units because one of the two of my original water heaters failed, so I assume the other would be soon behind. I like the fact that the exterior resists any corrosion. Installation was straightforward, and I would have attempted to install myself, but local code requires a certified plumber. The factory temperature setting was just under 120 degrees, so I increased it to 125. No issues to date. Are they worth the money? Time will tell....

Very pleased that I was able to order online and ship to store for an exact replacement for a failed marathon water heater

You can’t go wrong with buying this water heater!!!! Great quality and long lasting

Quality product. Excellent installation instructions. Packaging, pick-up, customer service all good

Time will see how well it works. Just got it installed.

Had a professional plumber install and it appeared the valves on the unit were leaking. Rheem sent replacement parts and I had the plumber out a 2nd time to install. New parts also leaked. We think the water heater it self was made out of spec and just won’t hold water. Returned unit and had plumber put in one of their standard water heaters.

I got tired of replacing rusted out water heaters every 7-8 years so I decided to spend the extra money for one that won't corrode. Just a bit of a warning if you have any dimension issues with the height: I measured mine and found this one to be very similar to the dimensions of my existing one. The hot water is a normal connection and connected with no issues. However, the cold water inlet on this unit is 3 1/2" higher that the actual height of the tank. I opted to use the dielectric nipples which made it 5 1/2" higher. My old water heater was connected with 12" supply lines with a 7/8" compression fitting on the end to connect to my 3/4" copper feeder pipe and a 3/4" female connection on the other end. This left me with a 6" space to connect this water heater to the cold water inlet. It doesn't make that bend with out kinking shut. So, without re-plumbing my cold water feed I had to purchase a longer supply line to make a more gradual bend. I ordered it to be delivered to my home and it took 11 days to get it. No hot water for 11 days. My point is to factor this extra height in when planning for your installation. By the way, I admit to being old school when it comes to my plumbing. My entire home is sweated copper and I do not want to go with PEX at this point. Not to mention code requires 18" before you start with plastic. It's in and it works great! Good luck!

So far so good. Have had it only 4 weeks but no issues so far. I did have difficulty regenerating the lifetime tank warranty initially but eventually Rheems resolved the issue.

The experience went very well. Tiffany the manager helped out immensely.

I have not plumbed this tank in yet. I unboxed it and set it near the existing water heater. Inspecting the new all-plastic heater, I noticed the hot and cold inlet/outlet wiggles when I attempt to move it. Is this normal? I can’t seem to find any cross section diagrams on the construction online to know if this is normal. Rheem can you let me know how the inlets are sealed to the inner tank? Am I feeling a gasket or O-ring seal? I want to love it…but afraid it’s going to leak!

I like the features. Lifetime tank, No anode rod to replace, and Titanium heating elements that last 5 times longer than steel. Only complaint is Rheem installed the cold water intake on an angle. Maybe there is a reason for this, but the assembly looks silly since it's leaning to the right. So far 2 weeks and no leaks!

Happy so far with purchase!