#1 Home Improvement Retailer

Calci-Free Tankless Water Heater Flush

$1789
  • Helps remove calcium and other solid deposits
  • Biodegradable flush efficiently cleans heater coils
  • Calci-free flush is corrosion resistant
caret

Product Details

Cleans heater coils thoroughly. Restores pressure and circulation in minutes, with no strong odor. Calci-Free is a unique, economical, biodegradable cleaner containing a combination of organic, inorganic and corrosion inhibiting ingredients. It is easy to use and works twice as fast as other cleaners. Use it for routine cleaning to remove calcium and other solid deposits from heating coils.
  • Calci-Free tankless water heater flush cleans heater coils thoroughly, restores pressure and circulation in minutes, with no strong odor, Calci-Free is a unique, economical, biodegradable cleaner containing a combination of organic, inorganic and corrosion inhibiting ingredients, it is easy to use and works twice as fast as other cleaners
  • More effective than vinegar
  • Easy to use no strong odor
  • Cleans heat exchanger fast
  • Return Policy
caret

Specifications

caret

Questions & Answers

12Questions
caret
Q:Can you use calci-free in a rheem tankless?
by|Sep 8, 2022
3 Answers
Answer This Question

A:  I am sorry but I cannot give you a definitive answer as I am not an authority on Rheem product. I would suggest you consult you manual on what product it recommends for descaling or give Rheem a call. It would be a good idea to have the model number and serial number of the unit handy. It will appear on the units rating plate.

by|Sep 9, 2022

    A:  Not sure, I have a water softener an that takes care hard water problems 

    by|Sep 10, 2022

      A:  Yes, it can be used in all tankless water heaters. Just do a good flush before reconnecting the plumbing for regular use.

      by|Sep 10, 2022
        caret
        Q:Do I need to use both the descalling product and the flushing product?
        by|Mar 14, 2022
        3 Answers
        Answer This Question

        A:  With this product the term flush is referring to the fact that it is a descaling product. So you would just use this. However, as a plumber I want to also point out what I believe to be a common misconception. Many people seem to think they must descale there units annually. I have found that not to be the case. Water quality varies tremendously throughout the country. With wells it can even vary house to house. I do not recommend prophylactically flushing or descaling units on a set schedule just for the heck of it. Unless of course you know based on prior experience that it must be done based on your water conditions. Experience has taught me that some areas the water quality will require that you do it much more frequently than others. And in some areas it may not be required at all. When scale builds up it will diminish heat transfer as well as water flow. If the water is not getting as hot as it used to or the flow has diminished, this may be a sign of buildup. However when these issues are not present, I typically elect not to do it out of concern that these acids could damage the heat exchanger. Lastly recently I serviced a unit that was still producing plenty of hot water and flow. But it had recently begun to make a howling noise. After adjusting the gas valve with a magnehelic the sound was still present. So the manufacturer recommended that I flush the unit. To my surprise this did correct the problem. It also got the efficiency back to factor settings. I know this contradicts what I have said but I am still reluctant to introduce acids into heat exchangers when it is not needed. If you do use this or other similar products make sure to flus the unit out when done. I will typically hook the unit up to a garden house and run fresh water through it for fifteen minutes.

        by|Jun 23, 2022
          3 found this answer helpful

          A:  For tankless units Yes as recommended by manufacturer.

          by|Apr 27, 2022

            A:  Just use the descaling.then flush with just water.

            by|Sep 9, 2022
              caret
              Q:How often can this be used before it damages the coil?
              by|Dec 30, 2020
              2 Answers
              Answer This Question

              A:  This product should not damage the coils. Should use this product 1 to 2 times a year on tankless water heater. I've been using it for years, no issues

              by|Jan 3, 2021

              A:  Let me start by saying I will assume the coil in question is copper, as this product should not be used on aluminum. The product should be used as needed. That can be confusing to many so allow me to explain. I live in a town with very good water. Thus there is little to no scale build up in my heater. If the unit lasts 20 years I may never need to us this. However my brother has bad water. Every six months he needs to descale his coil. How does he know this. The water is no longer hot enough. The scale blocks the transfer of heat. So when the water is no longer hot enough for him to shower he cleans the coil. The idea that this needs to be done annually or on a the same set schedule in all installations is untrue to me. There is nothing preventative about this if you don't have a scale issue. As to your specific question, a alkali in this product is intended to be aggressive enough to handle average scale but not aggressive enough to erode the copper. In old days they would use much more aggressive acids and would end up burning holes in the coil quite often. So I understand your concern. However at that time much more aggressive acids were being used. If you having to due this more than once a year, I would suggest you consider treating year water, to prevent the scale in the first place. Although the build up is more in the coil due to the heat, it is also building up on every other wet surface.

              by|Dec 30, 2020
                caret
                Q:How do we properly dispose of these chemical/fluids when completed?
                by|May 23, 2020
                1 Answer
                Answer This Question

                A:  If you look at the PDF's for this product they speak of calling your local authority to find out what is required in your area. The local authenticity is almost always the fire department as they typically have authority when it comes to chemicals. You could also consult with the manufacture at 1 800 201 3345. As a plumber let me tell you what I do and what the manufacturers representative recommended. First, if I am flushing a heater that is not performing, I typically find the acid has become fairly inert while doing its job. So there is little to now power left in the acid because the Hydrogen have been released. If I need to do a second flush or I am just flushing it as part of annual maintenance this is sometimes not the case. So before I run it down the drain I may add some baking soda to neutralize the PH. In all cases I run the water before and after to dilute it. Always wear gloves and safety glasses.

                by|May 26, 2022
                  1 found this answer helpful
                  Showing 1-4 of 12
                  caret

                  Customer Reviews

                  4.7 out of 5
                  (64)
                  • 4.7
                    out of 64 reviews
                  • 100%recommend this product
                  Filter by:
                  Showing 1-10 of 64 reviews
                  As advertised
                  Mixed with two gallons of water. Dissolved easily. Ran pump for 35 minutes to clean tankless water heater. Did the job well. Would recommend.
                  by
                    • Recommended
                    So far so good. It seems stronger than vinegar. The price was fair. Wear gloves and eye protect...
                    So far so good. It seems stronger than vinegar. The price was fair. Wear gloves and eye protection. I wish the directions for disposal was more detailed.
                    by
                    • Verified Purchase
                    • Recommended
                    2 found this review helpful
                    Worked very well in cleaning my Rinnai Tankless Hot Water Heater. Only recommendation is that yo...
                    Worked very well in cleaning my Rinnai Tankless Hot Water Heater. Only recommendation is that you follow the instructions specific to your model of heater vice simply using what is written on the Calci-Free container. Though very similar, a longer flush time is recommended along with a more robust back-flush rinse.
                    by
                    • Verified Purchase
                    • Recommended
                    1 found this review helpful
                    After only 5 minutes of back flushing the on demand water heater I could actually see some calciu...
                    After only 5 minutes of back flushing the on demand water heater I could actually see some calcium deposits floating around the 5 gal. pail being used to hold and pump the solution. I waited about 2 years to flush the system and after I was done, approx. 30 minutes, there was a considerable increase in the volume and pressure of the hot water being produced. Will do this every 6 months now that I see the positive affect it has.
                    by
                    • Verified Purchase
                    • Recommended
                    As far as I can tell it worked adit should....
                    As far as I can tell it worked adit should. The results of the cleaning process are not visible.
                    by
                    • Verified Purchase
                    Rector Seal - worked like a champ
                    worked great - Pressure and temp right back where it should be
                    by
                    • Verified Purchase
                    • Recommended
                    Worked perfectly on my Navian tankless hot water heater FOLLOW...
                    Worked perfectly on my Navian tankless hot water heater FOLLOW INSTRUCTIONS
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                      by
                        Showing 1-10 of 64 reviews

                        Frequently Bought Together

                        +
                        +
                        Price:
                        $1789