#1 Home Improvement Retailer

Internet #202798886

Model #RTG20124

Store SKU #1001023915

Store SO SKU #1001023915

Flush Kit for Tankless Water Heaters

$15499
Apply Now
Pay $129.99 after $25 OFF your total qualifying purchase upon opening a new card. info
Apply for a Home Depot Consumer Card
  • Compatible with Tankless Water Heater Service Valves
  • Includes pump, 2-Hoses and Bucket
  • Removes Scale Buildup on Heat Exchangers
Store
0 in stock
Text to Me
caret

Product Details

Tankless water heater flush kit helps keep tankless heat exchangers free of scale build up. The flush kit connects easily to the tankless service valves. Once connected you can run a solution of water and vinegar to clean the heat exchanger of any scale deposits. Regular use helps maintain a healthy tankless water heater.
caret

Specifications

caret

Questions & Answers

17Questions
caret
Q:I see an adapter in the photo to attach the 3/4" washing machine hose to the pump. What size adapter is that? Does it come with the kit?
by|Nov 9, 2022
3 Answers
Answer This Question

A:  Hi LenG and thank you for your question. It is 3/4".

by|Nov 10, 2022

    A:  Yes.  What you see is what you get. The hoses are compatible with the fitting/adaptor on the pump - which are usually compatible with the flushing connections on the water heater.

    by|Nov 13, 2022

      A:  3/4 and it comes with kit everything you need comes with it

      by|Nov 11, 2022
        caret
        Q:Does this kit work on Takagi water heaters and can the kit be used over and over
        by|Mar 31, 2022
        5 Answers
        Answer This Question

        A:  Will work with any tankless water heater that was professionally installed with isolation valves that allow you to shut off water supply to the tank and to plumbing. Idea is to just circulate descaling solution through the water  heater itself. The hoses supplies in kit screw on to the isolation valve. Same houses that run to your washing machine. Lots of good you tube videos to show you how to do it. 

        by|Apr 3, 2022

          A:  Question1: It MAY be possible... The notice from Takagi states: "Note: Isolation valves are not included but are recommended for installation." Thus, if your heater has had these valves added you will likely be able to use the Rheem Flush Kit. If you don't have the valves have them added to your system. Question 2: Yes, the kit can be used over and over again. I have used this kit for my water heater. It is simple to use and the directions are very clear, As they say "Read and Follow the directions!" Note: Home Depot is GREAT at accepting returns so long as the equipment is in good condition and has not been abused. Keep your receipt !! Best of luck! :-)

          by|Apr 5, 2022

            A:  Hi Becky and thank you for your question. Please call 1-877-737-2840.

            by|Apr 1, 2022

              A:  yes it can be used over and over. don’t know the brand mentioned. check you have it put together before you turn on the water!

              by|Apr 3, 2022

                A:  Yes as long as you have the turn valves installed on the cold and hot. (Intake /outtake) don’t know what the technical term is. But yes …you can use it over again and again. I am a 68 yr old lady and I did it myself. I use white vinegar by the way. The kit comes with easy written instructions.

                by|Nov 30, 2022
                  1 found this answer helpful
                  caret
                  Q:Hi, how long are the hoses?
                  by|Feb 24, 2022
                  4 Answers
                  Answer This Question

                  A:  6 feet long.

                  by|Mar 1, 2022

                    A:  5 feet. 

                    by|Feb 27, 2022

                      A:  Hi Raul and thank you for your question. The hoses are about 3.5' long.

                      by|Feb 25, 2022

                        A:  Each hose is four feet long.

                        by|Feb 27, 2022
                          caret
                          Q:Can I reuse the kit next year after one time cleaning with vinegar?
                          by|Mar 26, 2021
                          2 Answers
                          Answer This Question

                          A:  Yes you can reuse the kit. I would recommend filling the bucket with warm water and running it threw the pump.

                          by|Aug 21, 2021
                            1 found this answer helpful

                            A:  Hi Sc and thank you for your question. Yes you can.

                            by|Mar 26, 2021
                              Showing 1-4 of 17
                              caret

                              Customer Reviews

                              4.3 out of 5
                              (202)
                              • 4.3
                                out of 202 reviews
                              • 80%recommend this product
                              Filter by:
                              Showing 1-10 of 202 reviews
                              Fisrt time trying to do the flush myself. It was...
                              Fisrt time trying to do the flush myself. It was very simple, had no problems.
                              by
                              • Verified Purchase
                              by
                              • Verified Purchase
                              Worked really well to descale water heater. Directions indicate to...
                              Worked really well to descale water heater. Directions indicate to use white vinegar only. No need to purchase a descale chemical.
                              by
                              • Verified Purchase
                              Cleaned the scale out of the unit. Watch out for...
                              Cleaned the scale out of the unit. Watch out for the endothermic reaction of the vinegar it gets hot enough to blister your fingers and kill your grass if the bucket is sitting on it.
                              by
                              • Verified Purchase
                              Used to descale tankless water heater
                              I used this to descale my tankless water heater. It worked excellent and the directions were easy to follow. I used 3 gallons of vinegar from grocery store and ran for 1 hour. Then I flushed for 5 minutes with fresh cold water.
                              by
                              • Verified Purchase
                              Not a Rheem product
                              Kit arrived as advertised but it is a generic product and not manufactured by Rheem. The instructions also state to use white vinegar only and specifically stated “Do not use any other flushing solution". I returned the cleaning product ordered at the same time and bought the white vinegar at my local grocery store.
                              by
                              • Verified Purchase
                              • Recommended
                              1 found this review helpful
                              It worked great. No Problems! We found great tips on...
                              It worked great. No Problems! We found great tips on You Tube.
                              by
                              • Verified Purchase
                              Easy to assemble. Worked as described....
                              Easy to assemble. Worked as described.
                              by
                              • Verified Purchase
                              Don’t waste your money
                              I was disappointed in this purchase. I could have saved at least $50 had I bought the $5 bucket and the two hoses myself. Packaging this together inflated the price considerably. The hoses were flimsy and cheap. I’m a single woman and I should have done my homework to figure out that this “kit” was not worth the high price I paid for it.
                              by
                              • Verified Purchase
                              1 found this review helpful
                              Refunded at store arrival...
                              Refunded at store arrival
                              by
                              • Verified Purchase
                              Showing 1-10 of 202 reviews

                              Frequently Bought Together

                              +
                              +
                              Price:
                              $15499