QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon

This stuff works like magic! I have a Rheem electric tankless water heater and well, life sometimes gets crazy and I was about 2 years behind on doing a cleaning…I followed the directions on the proper ratio for mixing and WOW does this stuff clean great! Until now I always used vinegar to do the cleaning. Theres a lot of lime in our city water and within 10 minutes of using vinegar to clean with the vinegar has turn white almost to the point of looking like milk. I cant tell if everything is cleaning and coming out when the liquid turns so white. I just always hoped Id gotten all the build up out and called it a day. One of the best things about this cleaner is its pink/red. As it cleans and sediment is dissolved in the liquid it turns a yellowish color…according to the instructions that tells me its time to change it out. So you change it out and let it run again and after an hour I knew I had removed all the sediment because it was still pinkish even though you could tell there was sediment in it. Still have half a jug left to use in 6 months when Im back on schedule and cleaning the system on time.

I’m a believer. I was using vinegar to clean my Noritz water heater. I was getting combustion codes for about a year. Started with code 10, then 90, and a few 99’s. I had cleaned the combustion chamber as directed. Noritz tech support told me the last step was to check the fuel air mixture and needed a licensed plumber who had a nanometer. So I decided to try this descaling solution as a last resort. I ran a little more than quart through for about a half hour. There wasn’t much change in the color.. started getting a little lighter but no yellow. After I noticed the water was a little hotter, and no codes.. it’s been over a week. I’m still used to going to the controller a few times a day and can’t believe there’s no codes. I will use this from now on.

I used this to service my tankless water heater and it seemed to perform well. As my water isn't hard there was likely little buildup to begin with. I noted some yellow as it foamed which is an indicator of reaction to cleaning so I'm hoping it's done the job. Noting it's not harmful and didn't smell like vinegar is a plus to me. Would use again.

Thus is my first time i used this product. I have tried 4 other products that cost much more . It seems like a good product. Even shows when you need to add more by a color change. I let this run for hours and my tankless water heater and needed it. I had to add extra product after about 30 minutes of use. I knew because it changed from pink to yellow. Due to the six months since my last descaling. This cost me less and I have some for my next time. So double the savings.I will reorder this next time and every time after. It even worked better then 90% vinegar with none of the smell.

After having some surgery and leaving the cleaning to my spouse for three months, I discovered that his standard of toilet cleaning and mine in the upstairs toilet were, shall we say, wildly different. I'm still not up to the job of chipping it all off with a pumice stone, and other cleaners were less than effective.This is amazing! I forced the water out of the bowl with the toilet brush, as I would to clean it, and filled the bowl up past the usual water line with the solvent. Shut the door and went and did something else for an hour. Came back and it was over halfway dissolved! Flushed and refilled, and will leave it a bit longer to work on the remaining lime scale. I opened a window, but I didn't smell any fumes or have stinging eyes, coughing, etc. as with some other cleaners. Nobody wants to have to do that level of cleaning up, but if you do, this makes the job a touch easier.

Works well.

Product works good

Item performed as advertised.