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Internet # 300800822

Model # RETEX-36

Store SKU # 1002624318

Performance 36 kw Self-Modulating 7.03 GPM Tankless Electric Water Heater

$649.00
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  • Provides continuous on-demand hot water
  • Energy and cost savings of up to 34% in whole-home installations
  • Water heater requires 4 x 40 AMP double pole breakers
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Product Details

Get hot water for your space with this Performance Self-Modulating Tankless Electric Water Heater. This energy-efficient water heater delivers an endless hot water supply and consistent temperature with a self-modulating technology that adjusts energy based on your hot water needs. With the electronic thermostatic temperature, you can easily read the incoming water temperature and control it in one-degree increments. Point-of-use installation and compact size makes the Performance water heater a convenient choice.
  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application or 34% when used as a whole-home solution
  • Instant, continuous hot water: instantly provides ample hot water for up to 5 showers and 2 faucets (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location)
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Great investment and value: energy cost savings and a 5-year heat exchanger and 1-year parts limited warranty
  • Easy to adjust: electronic temperature control adjustable in 1-degree increments from 80-140 degrees F with easy-to-read display (Celsius and Fahrenheit compatible)
  • Easy installation: compatible with 3/4 in. water connectors for flex hose installation and no venting or T and P valve required for Easy installation (professional installation recommended)
  • Easy to maintain: durable, easy-to-replace heating elements
  • A reliable hot water solution from Rheem, the global leader in water heating
  • Before purchase and installation, please verify that you have the proper electrical requirements for your chosen heater
  • ETL Listed to UL-499 and CAN/CSA-C22.2 No. 64
  • Check out our buying guide on water heaters
  • What tankless water heater is right for you?
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
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Specifications

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Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?
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Customer Reviews

4 out of 5
(2,143)
  • 4
    out of 2,143 reviews
  • 65% recommend this product
Filter by:
Showing 1-10 of 2,143 reviews
Failed after 10 months
Haven’t even had it more than a year and was getting ready to do a flush on it, I have it hooked up with a softener already and when I want to turn it off I noticed some charring on the top and so I took the panel off and nothing some more black corrosion and checked my breakers and two were tripped. So I tried to turn those back on and it started smoking and sparking so I turned them back off. Pretty sure the unit is fried. Brand new construction, brand new installation would not recommend.
by
    2 found this review helpful
    Do not buy this!
    I had the unit for 2 years. There was a problem with the thermistors needed to be replaced. I ordered them. When I put the new one in it leaked through the thermistors because the place they seat was no longer there. When calling them I was disconnected 5 times and asked to send pictures 3 times. Finally the manager said because I did not flush the system every year with vinegar I had voided my warranty. No surprise, there is nothing in their manual that explains that process. Don’t buy this!
    by
      4 found this review helpful
      It failed in 2 years , twice
      I had the unit for 2 years. There was a problem with the thermistors needed to be replaced. I ordered them. When I put the new one in it leaked through the thermistors because the place they seat was no longer there. When calling them I was disconnected 5 times and asked to send pictures 3 times. Finally the manager said because I did not flush the system every year with vinegar I had voided my warranty. No surprise, there is nothing in their manual that explains that process. Don’t buy this!
      by
        2 found this review helpful
        Excellent product I never run out of hot water and it lowered my water bill
        by
        • Verified Purchase
        Works great! Using this to supply our cabin kitchen and bath with hot water.
        by
          replace a replacement
          If you are looking at buying this tankless water heater better get ready to buy a back up. I purchased one in Feb 2023. This exact model stopped working June 2023. Didnt even make it 5 months. I called RHEEM warranty they told me that they cannot warranty this out because its my "waters" fault. I recommend do not purchase this garbage. Go buy an Electric tank water heater. Dont waste your time or money. Rheem customer service doesnt care that they provide a faulty product.
          by
            15 found this review helpful
            Lights flickering when water heater goes on
            Most homes have 2 lines supplying 100 amps each - that's 200 amps total. In a typical home you may have some bigger appliances like: dryer ( 60 amps ), oven ( 60 amps ) or air conditioner ( 60 amps ). For us, that's 120 amps not including 4 bedrooms, 2 baths, family room and garage full of other electronic stuff. The RETX-27 may draw up to 120 amps which may not pop your main 200 amp breaker but the lights dim and flicker when the unit goes on. You may need to add new power lines.
            by
              9 found this review helpful
              Easy install great for remodeling homes
              The product works amazing we use these in all of our remodels and nobody ever complains about them. The only issue is that it is the smallest you can to barely cut it for a whole house. The installation is very straightforward and easy if you know what you are doing.
              by
                • Recommended
                1 found this review helpful
                Will leak
                Bought unit back in 3/2021, have maintenance every 6 month. I also have a water softener so mo hard water, and it has now leaked , was denied a warranty claim, because they said it had build up from a slow leak from a weld, i guess it only cover large flooding leak, horrible warranty department, Lady told me that I failed to service it every 4 months. Will be going back to a tanked water heater to much maintenance.
                by
                  13 found this review helpful
                  On-demand hot water heater.
                  This hot water heater is excellent. We can take one shower after another all day long and never run out of hot water.
                  by
                  • Verified Purchase
                  • Recommended
                  1 found this review helpful
                  Showing 1-10 of 2,143 reviews

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                  Ratings
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                  Required Volt Connection240 volt240 volt240 volt240 volt
                  Application TypeResidentialResidentialResidentialResidential
                  Wattage (watts)36000 W27000 W19200 W36000 W
                  Indoor/OutdoorIndoorIndoorIndoorIndoor
                  Water Heater FeaturesWall MountedWall MountedDigital Display, Freeze Protection, Overheat Protection, Wall MountedDigital Display, Freeze Protection, Overheat Protection, Wall Mounted
                  Fuel TypeElectricElectricElectricElectric
                  Number of Showers1-31-21-21-3
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