Rheem Electric Tankless Water heater Overview

The Rheem Electric Tankless water heater provides continuous hot water on demand with a maximum flow rate of up to 5.0 gallons per minute (GPM). The unit features an external temperature control and LED's which indicate active element and standby mode, and a modulating brass/copper heat exchanger provides improved efficiency. No venting is necessary, which makes installation easier while eliminating greenhouse gases. The water connections are 1/2-inch compression fittings, and a pre-wired 2-foot power cord is included.

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Consumer Reviews of Rheem Electric Tankless


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #4 of 14 Rheem Water heater
  • 75% of customers recommended

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Rheem Electric Tankless Water heater Reviews

"Poor Product and Warranty Service"

1.0 rating
Very Unsatisfied

I purchased a Rheem Tankless hot water heater last summer. From day 1 the heater never worked correctly. After showering for 5 minutes, the water would become lukewarm, after 10 minutes the water was essentially cold. I adjusted the temper on the heater up a few times, but had to find a balance between "too" hot and not not enough. However, the problem continued to exist. Finally I called Rheem and explained my issue. They initially told me they would send out a service rep, but later came back and told me there were no reps in my area and I should obtain my own contractor to have the problem corrected. I did hire a local contractor who concluded one of the heating elements needed to be replaced. I purchased the element from Home Depot and had the contractor replace the old with the new heating element. I submitted a warranty claim via email to Rheem with the receipts, and all required information. Yesterday I received a letter from Rheem in my us mail stating they needed to contact the plumber for verification of payment, etc… and to provide his name and number. As well, the receipt from the contractor needs to include the company letterhead with phone number, etc. I called Rheem this am and explained that I included the contractor's name and number when I submitted the claim and they should call him for payment verification. As far as having the Company Letterhead on the receipt they should ask him to provide that as well. Their response was they will not call the contractor… So it's a wonder to me why I would provide that information to start with. Also, when I received the letter from Rheem in the us mail requesting the information above, the letter lacked to include the Letterhead information Rheem was requesting the contractor provide. As a result of the poor customer service, I would never purchase a Rheem hot water heater again and would suggest the same to friends and family as well as any readers of this review.

Mitchell Pemberton

Wappinger Falls, NY

"Great Water Heater!"

5.0 rating
Very Satisfied

My Rheem RTE-13 Electric Tankless water heater (13 kW) is the best water heater that I have ever had. I recently bought a fixer upper home and as a result knew I would need to buy a bunch of new appliances and the like. I bought ones that were cost friendly but also were rated highly for quality. With the Rheem, I was a little concerned that the quality wasn't going to be as good as the reviews were saying because the price was just so unbelievably good. Well, I did find out that the reviews were accurate and the equipment worked as advertised. I am absolutely thrilled with the performance, quality, study construction and low price. There is nothing I can think of about this water heater that is a con or bad characteristic. I am a very satisfied customer and would recommend this unit to others looks for quality at a low price!

Harrisburg, PA

"Rheem Tankless Water Heater"

5.0 rating
Very Satisfied

I was a little skeptical when I first purchased this water heater a little over six months ago. I did not really get the idea and had never really heard of a tankless water heater. The installation was rather quick and easy. Especially considering the size of this water heater. There are multiple things that I love about this product. It is very energy efficient. There has been a noticeable decrease in my electricity bill since purchasing this product. Another thing that I love is that I never have cold water. With past water heaters, if two people took a shower at the same time only one of those people would get warm water. This product makes it possible for two people to get hot water while taking a shower. I really have nothing negative to say about this product. There has been no need to replace or repair this product. I would definitely buy this same brand again and would definitely recommend to friends or family.

Perris, CA

"A Solid, Dependable Heater"

4.0 rating
Somewhat Satisfied

I've owned this heater for about 4 months. It was very easy to install and the cost was about what I was hoping to spend. I was satisfied with the transaction. I don't like the fluctuation in temperature. I've noticed that the hot water doesn't stay too hot for very long. It's not the greatest heater in the world, but for the cost, I think it does what it is expected too. I've never had to replace or repair this unit. I would try this brand again, but I would buy a better unit. You get what you pay for. I think this unit is good at what it does for the money that it cost, but if I was going to recommend it to a friend, I would suggest they spend more money and get a product that they will be impressed with. This particular brand seems to work fine, but this model needs more power.

Westland, MI

Other Electric Tankless Reviews

Most online reviews of the Rheem Electric Tankless water heater are positive. Several homeowners on Amazon.com state that they are surprised at how well it provides hot water without running out for the entire home. Difficulty with the installation and low water temperature are mentioned most often in the negative reviews.

Electric Tankless Warranty

The warranty for the Rheem Electric Tankless water heater is comprised of the following:

  • 10-year limited heat exchanger warranty
  • 1-year limited parts warranty

Labor costs are not included in the warranty.


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