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Performance Platinum 8.4 GPM Natural Gas High Efficiency Indoor Tankless Water Heater

$1279.00
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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Energy saving: only heats water on demand
  • Longer PVC venting: 150 ft. with 3 in. and 60 ft. with 2 in.
  • Continuous hot water for 1-3 showers at once; see Sizing Guide
  • View More Details
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Product Details

Make sure you always have hot water with this Rheem Performance Platinum 8.4 GPM Natural Gas High-Efficiency Indoor Tankless Water Heater. This on-demand unit saves energy while providing enough hot water for one to three showers at once. To lower energy costs, the water savings setting conserves up to 1,100 gal. per year.
  • Click here for our Sizing Guide to ensure you choose the right Rheem tankless model for your region and usage
  • Continuous hot water: Rheem performance platinum tankless water heaters when you need it, for as long as you need it and the 8.4 GPM model can provide enough hot water to supply 1-2 bathrooms at the same time (at a 35 temperature rise)
  • Saves water: save up to 1,100 gal. of water per year with our exclusive water savings setting
  • Saves energy costs: tankless water heaters heat water only when you need it which saves on energy costs from day one and combined with Rheem condensing technology, this leads to estimated energy cost savings more than $1,100 over 12 years
  • Additional savings: this product qualifies for rebates through many utility companies and state/local governments look below the product price to see if any apply to your purchase based on your location
  • Saves space: small, wall-mount design frees up valuable floor space within your home
  • Perfect for replacement: compatible with standard gas line making it easier to replace a traditional tank, plus, advanced venting technology increases installation location options; venting lengths are up to 150 ft. on 3 in. PVC and up to 60 ft. on 2 in. PVC
  • Saves on installation costs: included components, like the horizontal 2 in. vent termination kit and built-in condensate neutralizer and low-cost PVC venting compatibility help to keep installation costs to a minimum
  • Easy to own: our maintenance notice setting alerts you with a flashing warning code when it is time to call for a regular service check and our hard water build-up indicator automatically displays a service alert if scale build-up is detected
  • Warranty: 12-year limited warranty on heat exchanger, 5-year limited warranty on parts and 1-year in-home labor warranty
  • Recirculation pump kit ready: quickly pairs with our tankless recirculation pump kit-timer based (model # RH17920) and hot water recirculating pump with under sink kit (model # RH18537) to provide faster hot water at the tap to reduce water waste and save up to 12,000 gal. per year
  • Reliable hot water solution from Rheem, the global leader in water heating
  • Call 1-855-400-2552 before noon for same-day installation service in most areas, or visit our Water Heater Installation page for more information.
  • Click here to learn more about Eco Options and Energy Efficiency
  • Call 1-855-400-2552 before noon for same-day installation service in most areas, or visit our Water Heater Installation page for more information.
  • Click here to learn more about Eco Options and Energy Efficiency
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
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Specifications

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Questions & Answers

453Questions
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Q:How many btu
by|Jun 2, 2023
1 Answer
Answer This Question

A:  Hello, this would be 180,000 BTU/h

by|Jun 2, 2023
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    Q:If I am installing this unit in a basement / vented crawlspace area, can I terminate the intake air pipe in the unconditioned / vented space? If so, does the termination still need to be within 24" of the exhaust termination?
    by|May 30, 2023
    1 Answer
    Answer This Question

    A:  Hello, this model can not use room air whatsoever it would need to be vented to the outside. As for the termination when you are not using a concentric termination or a termination as a whole minim distance 12 always but 24 would be a best case scenario.

    by|Jun 1, 2023
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      Q:Can you provide (or direct me to) a diagram for dual unit installation. Based on my calculations, I need about 18 GPM.
      by|May 30, 2023
      1 Answer
      Answer This Question

      A:  Hello Brian, please contact our technical support line at 866-720-2076.

      by|May 30, 2023
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        Q:Specs say 5in vent diameter- is this a typo, or do I need 5-3 reducers for the concentric kit?
        by|May 20, 2023
        1 Answer
        Answer This Question

        A:  Hi ComfyAF and thank you for your question. The venting requirements are 2" or 3" PVC 2-Pipe.

        by|May 22, 2023
          Showing 1-4 of 453
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          Customer Reviews

          4.1 out of 5
          (835)
          • 4.1
            out of 835 reviews
          • 69% recommend this product
          Filter by:
          Showing 1-10 of 835 reviews
          Don’t get Rheemed
          After about a year of flawless functionality we arrived home to find the system not working. It sprung a leak, detected it and shut itself off. Which is awesome. We contacted Rheem & they had us send in photos. Once they saw them they read me the riot act on its installation. (as though I’m a contractor) It was installed professionally from a company. From the photos they voided our warranty & blamed the installation. They seem to care more about getting out of the warranty then helping us.
          by
          Response from RheemMar 21, 2023
          Hi,

          Thank you for this review. We apologize for the inconvenience that you have experienced because of the leak on your water heater. The water heater that you have reviewed includes a 12-year heat exchanger warranty, a 5-year parts warranty, and a 1-year labor warranty. For better assistance, please contact our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST. One of our experienced analysts will be happy to assist you with questions on warranty coverage for your water heater.

          Derius rheem
            3 found this review helpful
            Product is Junk
            Have had this unit for over 2 years in my home, have spent more on labor than the cost of the unit. DO NOT BUY WITHOUT WARRANTY, Home Depot is no help, Rheem is worse...I will end up having to replace this unit with another brand and will not use Home Depot for any other appliances. Worthless product, do not buy it.
            by
            Response from RheemFeb 14, 2023
            Hi Alan,

            Thank you for this review. We apologize for the inconvenience you have experienced because of the performance of your water heater. The water heater that you have reviewed included a 12-year heat exchanger warranty, a 5-year parts warranty, and a 1-year labor warranty. If you are still in need of assistance, please contact our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST. Our experienced analysts will be happy to assist you with warranty coverage questions.

            Derius rheem
              3 found this review helpful
              Valves are garbage
              Buy your own valves! Home Depot sells this unit w/ valves. They are not Rhem and no Rheem warranty! The included valves are placed in the Rheem box by HD, a non-name, poor quality, different design, unavailable, and you'll need to redo your plumbing if you need to replace when they fail! You will need to spend $145 to buy the right valves from HD. My hot water valve failed out of the box. HD wants me to return the entire heater. I had to buy proper valves on my dime. Search for NIBCO H-44443WPR.
              by
              Response from RheemOct 28, 2022
              Hi,

              Thank you for this review. We apologize for the inconvenience you have experienced. To better assist you with this issue, please HomeDepot.com customer service department at 1-800-466-3337 any day between 6 A.M and 2 A.M. EST. Home Depot customer service can assist you with this issue or transfer you to your local store for more assistance.


              Derius rheem
                10 found this review helpful
                Don't buy
                Worked great for the first year and half, after that keep getting a code 12. Called tech and sent pics of install- no response from tech on what I should do. VERY FRUSTRATED!!!
                by
                Response from RheemOct 10, 2022
                Hi,

                Thank you for this review. We apologize for the inconvenience you have experienced and hope this issue has been resolved. The water heater you have reviewed includes a 12-year heat exchanger warranty, and a 5-year parts warranty. If you still need assistance, please call Technical Support at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST and one of our experienced analysts will be happy to assist you.

                Derius rheem
                  6 found this review helpful
                  Easy install and straight forward
                  Purchased this tankless and was very easy install. Directions were easy. I vented this unit through the roof. I had an existing 1/2” gas line and am currently using that with with a planned upgrade to 3/4” next week. The unit works fine with 1/2” gas line but I didn’t have any other gas appliances running.
                  by
                  Response from RheemSep 6, 2022
                  Hi John,

                  So glad to hear installation was easy and you are enjoying your new water heater! If you ever have any questions about your new heater, please call Rheem Technical Support at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST and one of our experienced analysts will be happy to assist you.

                  Thank you for choosing Rheem for your water heating needs!

                  Derius rheem
                    • Recommended
                    1 found this review helpful
                    Simple reliable hot water
                    Easy to install, possible to do solo. Looks and works great! It does make a "thud" sound when igniting.
                    by
                    Response from RheemAug 29, 2022
                    Hi Christian,

                    So glad to hear installation was easy and you are enjoying your new water heater! If you ever have any questions about your new heater, please call Rheem Technical Support at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST and one of our experienced analysts will be happy to assist you.

                    Thank you for choosing Rheem for your water heating needs!

                    Derius rheem
                    • Verified Purchase
                    • Recommended
                    You will not regret
                    I live in western PA and had mine installed the second week of June. My gas bill for May (prior to the last cost increase) was $72.26. My June bill (after the cost increase) jumped to $103.70. There are only two people in my household and we conserve as much energy as possible. I just received my July bill and it dropped to $24.03. That is $79.67 in just one month, and that is not a full month of using this unit. The unit is quiet and keeps a steady/strong stream of hot water. I am very happy with my purchase.
                    by
                    Response from RheemOct 25, 2022
                    Hi,

                    Thank you for the 5-star review! We are glad to hear you are enjoying your new Rheem Water Heater! If you need assistance with your water heater, please call our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST.



                    Derius rheem
                      • Recommended
                      4 found this review helpful
                      Just Intalled
                      I am going to speak about my experience with the installation. Firstly, this is not a one to a 3-hour project unless you are just putting the pipes mostly out in the open and, there are no modifications needed. Our installation took 2 days solid days. Good thing there is an $800.00 rebate from the gas company for this particular product. Installation was quite expensive. This was a $3500 project including the water heater unit which was discounted by using my Home Depot Card.
                      by
                      Response from RheemOct 21, 2022
                      Hi,

                      Thank you for the 5-star review! We are glad to hear you are enjoying your new Rheem Water Heater! If you need assistance with your water heater, please call our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST.

                      Derius rheem
                        • Recommended
                        3 found this review helpful
                        Worked as designed
                        I'm a DIYer, installed it in 2 days, had to run coppers and solder the joints, make sure you have valve fittings, that does not come with the unit. was able to do it by myself.
                        by
                        Response from RheemOct 31, 2022
                        Hi Ritch,


                        Thank you for this 5-star review! We are glad to hear your new Rheem Water Heater is working great for you! If you need assistance with your water heater, please call our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST


                        Derius rheem
                          • Recommended
                          4 found this review helpful
                          Be aware of a design flaw that cannot be fixed!
                          Water leaks from the joint between a copper pipe and the plastic base of Water Drain Plug. The pipe loosely sits on a small o-ring inside the base. Over time it is destined to fail and leak water. The location of the plug is extremely awkward. Replacing the o-ring is doable but the leak persists. Tried to replace the plug with a PEX pipe, but the pipe won't stay, and it's nearly impossible to install a clamp. Used a piece of rubber to fill the end of the copper pipe, still leaks. A nightmare!
                          by
                          Response from RheemJun 14, 2022
                          Hi Jimmy,

                          Thank you for this review. We apologize for the inconvenience you have experienced because of a leak on your water heater. The water heater that you have reviewed includes a 12-year heat exchanger warranty, as well as a 5-year parts warranty and 1-year labor warranty. If you are still in need of assistance, please call our Technical Support team at 866-279-4566 between the hours of 7 A.M. and 7 P.M. CST. Our experienced analysts will be happy assist you with technical questions, and warranty coverage.

                          Derius rheem
                            14 found this review helpful
                            Showing 1-10 of 835 reviews

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                            Ratings
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                            Indoor/OutdoorIndoorOutdoorIndoorIndoor
                            Gas TypeNatural GasNatural GasNatural GasNatural Gas
                            Number of Showers1-32-42-42-4
                            Application TypeResidentialResidentialResidentialResidential
                            Efficiency LevelSuper HighSuper HighSuper HighSuper High
                            Water Heater FeaturesUltra LoNox,Wall MountedUltra LoNoxFreeze Protection,Ultra LoNox,Wall MountedUltra LoNox,Wall Mounted
                            Fuel TypeGasGasGasGas
                            Required Volt Connection120 volt120 volt120 volt120 volt
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