Rheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater
Rheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater
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Rheem

Rheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater

|9 ratings

Key item features

  • Electric Power: This electric tankless water heater operates at 240 volts and has a power output of 13,000 watts, drawing 54 amps for efficient water heating.
  • Continuous Hot Water: Designed to provide endless hot water, this unit is suitable for both commercial and residential general-purpose applications.
  • Adjustable Temperature: Features an adjustable digital temperature display, allowing users to set the water temperature between 59 and 140 degrees Fahrenheit.
  • Replaceable Element: Equipped with a replaceable heating element, contributing to the longevity and maintainability of the water heater.
  • Flow Activation: Requires a minimum flow activation of 0.3 gallons per minute (gpm) to initiate heating, with a 1/2 inch NPT water connection.
  • Temperature Performance: Achieves a 59-degree Fahrenheit temperature rise at 1.5 GPM and a 36-degree Fahrenheit rise at 2.5 GPM, with higher flow rates limited by the thermostatic setting.
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Current price is $271.20
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3.4 out of 5 stars
stars9 ratings8 reviews
How item rating is calculated
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Showing 1-3 of 8 reviews

Apr 5, 2026
Randall
Sold and shipped byMWH
5 out of 5 stars review

Verified Purchase

The hot water is dial able and that is good. Fir under the sink it is great

Helpful?7KV327LICGLF452128463
Feb 2, 2021
debbie
5 out of 5 stars review

Verified Purchase

great space saver, works great

Helpful?7KV327LICGLF452128463
Feb 4, 2020
nonya
5 out of 5 stars review

powerful for its size

I installed this unit in my 2/1 1960's condo replacing a 30gal water heater. What a great product! The install was easy i had to upgrade my breaker to a 60 from a 30 which meant upgrading the wiring gauge, which wasn't hard at all. I have hot water on demand now that never runs out! my 30 gal tank would only provide about a 5 min shower now its as long as i want. I have to fill my tub with free flow hot water at only half flow but to keep hot water but i figured as much from such a small unit. overall it was very much worth it to ditch the hot water storage tank and have hot water on demand for as along as in need it. If i were to try to heat a larger house with 2 or 3 baths I would suggest a larger unit but the product is GREAT!!

Review from rheem.com
Helpful?7KV327LICGLF452128463
reply from Supplier Response

Hi, Thank you for tanking time to write this review, we appreciate the great feedback and we happy to hear installation was easy and you are enjoying or new water heater. Jennifer