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Rheem

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

    • Based on 671 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 1 hour and 21 minutes
Available payment plans shown during checkout

Style: Water Heater


Features

  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Bottom 3/4" NPT water connections
  • On demand, consistent and continuous hot water

Description

The Rheem Performance RTEX-24 is a 24 kW tankless electric water heater ideal for whole-home applications. Rheem tankless electric water heaters offer a continuous, endless supply of hot water. A lower kilowatt unit can provide hot water on demand for single or multiple point-of-use applications while a higher kilowatt unit could provide hot water for a whole house depending on the inlet ground water temperature. Tankless electric water heaters save space, save energy, save money, and require no venting. The sleek, compact size, 90 percent smaller than a tank, allows you to save space and place the unit wherever you want, including under a sink. Tankless units only draw energy when hot water is flowing, while traditional tanks are constantly drawing energy to keep the water in the tank at the desired temperature. Rheem's self-modulating technology can save Up to 50 percent on your water heating bill.

Brand: Rheem


Product Dimensions: 17.63"W x 18.25"H


Special Feature: LED Display


Color: Gray


Wattage: 24 KW


Brand: ‎Rheem


Product Dimensions: ‎17.63"W x 18.25"H


Special Feature: ‎LED Display


Color: ‎Gray


Wattage: ‎24 KW


Voltage: ‎240 Volts


Maximum Flow Rate: ‎5.9 Gallons Per Minute


Heat Output: ‎24 Kilowatts


Style: ‎Water Heater


Maximum Operating Pressure: ‎150


Maximum Pressure: ‎150 Pound per Square Inch


Mounting Type: ‎Wall


Manufacturer: ‎Rheem


Part Number: ‎RTEX-24


Item Weight: ‎17.8 pounds


Country of Origin: ‎China


Item model number: ‎RTEX-24


Is Discontinued By Manufacturer: ‎No


Finish: ‎Stainless Steel


Shape: ‎Rectangle


Installation Method: ‎Wall Mount


Item Package Quantity: ‎1


Special Features: ‎LED Display


Usage: ‎Inside; Professional


Included Components: ‎Fittings, Aerators


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: January 19, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Can't complain for the price, works well
Style: Water Heater
So let me begin this by saying that I purchased this off Amazon warehouse for a discounted price of $171. After tax and shipping it came out to $188. This is drastically lower than the price home Depot or Lowe's would offer of nearly $600 plus tax. So when my water heater went out, and I was looking for a quick fix I searched tankless water heater on Amazon and found this. I recently had installed one of these at a friend's house, they got the largest option for the Rheem tankless water heater. The install at their house did not go well. The first unit that we got I installed, and it did not work. I thought it was something I did and spent hours troubleshooting just to find out that the board on the unit, which was brand new, was bad. So we exchanged and got another one and it installed just fine. Plugged it in and it works That said, I wasn't sure what to expect and was hoping for a better situation this time. And a better situation is what I got. I had no problems installing this unit, it's set up very easily and worked exactly as intended. I could not be happier! It is a small compact unit and it heats very quickly. I will update this when the first bill comes if it is outrageous. But I can't imagine it would be. The system seems to work well, and I'm confident that it will continue to do so. ... show more
Reviewed in the United States on January 30, 2024 by Kyle
    • Hot water quickly and constantly after installation of my new Rheem tankless water heater!
Style: Water Heater
Easy of installation and the fact you never run out of hot water!
Reviewed in the United States on November 24, 2023 by Fred Weaver
    • Installation was relatively easy and it works great!
Style: Water Heater
Review Image by Ron Selby Home Ron Selby Home
Review Image by Ron Selby Home Ron Selby Home
Installation was as easy as a conventional water heater for an advanced DIY person. I didn't have to hire a plumber or electrician. At first I didn't think it worked because I didn't realize the display panel doesn't light up until you use hot water.
Reviewed in the United States on August 23, 2023 by Ron Selby Home Ron Selby Home
    • Useless Product: Total waste of money
Style: Water Heater
I was so excited to get this product - I had read nothing but good reviews, heard great things about the company and was thrilled to get it as a gift for the house for the Holidays. Unfortunately - it is one of the worst products I have ever purchased and I hope I save at least one other human from making the same horrible mistake that my family did. It does not heat water consistently, so while using it there are constant bursts of hot and cold water. Worst of all, it does not heat enough the water for us to be able to take baths anymore, which was the entire reason we got this product in the first place. Customer support was a joke. Because we installed it after Christmas, we missed the return window via Amazon, and the solution from Rheem involves hiring another plumber AGAIN to install something else, which isn't even guaranteed to work. I have never regretted upgrading an appliance more in my life, or buying something. I would give anything to be able to take a bath in my home right now. They should be ashamed to sell this product. ... show more
Reviewed in the United States on February 13, 2024 by J Devi
    • The size is very nice in my small space.
Style: Water Heater
This was not as easy to install as I'd hoped, but got the job done. What I like the most is the small size-- allows me to have storage area where the large tank water heater had been. It seems the water does not get as hot as I like, but perhaps that's an error on my part for not adjusting it higher. The price was okay. Hope this lasts a long time. We will see. ... show more
Reviewed in the United States on February 14, 2024 by Charlotte
    • All the hot water you need and more.
Style: Water Heater
This is the fourth tankless we've owned. The first was destroyed in a fire and we still have the other two working at family cabins. First I want to point out some fundamental pros. It is small, the size of a suitcase while a tankked heater needs a lot of space. Secondly as long as you have power you never run out of hot water. With three boys in the house we'd run out of hot water with the tank heater, not so with the tankless. The third pro takes a while to notice,, Less electricity use = smaller bill. My average monthly bill was $120. it was $90 after the tankless was installed. The cons would be that if you lose power you have no hot water, but how often does that happen? Also are you needing hot water at the time IF it happens? Second con is the 24& 27KW units need Three double throw 40 amp breakers. and needs feeding with 8 gauge wire. They are whole house units. No you cannot just wire it on your tank heater line. A tank heater doesn't require "INSTANT" power as it uses lower power most ALL of the time. A tankles uses a lot of power ONLY when you need hot water. Most of the time it is off. I've read the low star ratings and it is fairly obvious that these persons did not do their research or read the manual. One complaint was the water only became warm. The person was using a 6kw unit for his full house. Those units are for low flow point of use. Use the correct sie for the intended usage and need! The last con observation is you will notice that it takes the same amount of time to get hot water out to the faucet as it does with a tank heater. The law of physicials and all.... The bottom line here is DO YOUR DUE DILIGENCE/RESEARCH so there are no surprises. The manufacturers tell you what it does and what you need to make it work. My conclusion is I Recommend this unit. When you get it PROPERLY installed it will work so well you will forget about it. ... show more
Reviewed in the United States on March 12, 2023 by Patrick Everdell
    • Excellent Product(so far)
Style: Water Heater
I've only had this operating for about 2 weeks. My first thoughts, I LOVE it! Works excellent, looks great and sleek. Things to remember, after buying the unit, the extras to install it are as costly as the HW unit itself (Romex wire was $$). But to me, well worth it! Takes a couple seconds longer to get to faucets but unlimited hot water when it does! I would but it again. ... show more
Reviewed in the United States on July 23, 2022 by Gary
    • Great product
Style: Water Heater
This works great it is the third one I have installed in my home and the best so far should have just went with Rheem from the start
Reviewed in the United States on June 10, 2023 by William

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