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

Just what you need if you are going to flush your tankless water heater. High powered solvent and cleaner. Very effective and restores flow.

Cleaned heat exchanger perfectly!

Why did you pick this product vs others?:I use this descaling solution for all my clients and it works great as well for me. The color changes as you go along and indicates if you have to add more solution or not. Here’s a real bad one in picture of one I recently serviced.

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.

Used QwikDescaler+ on my tankless hot water heater and, well, I didn’t hear any screams from the limescale, but I think it did the job. Water flows better, no weird noises, and my heater hasn’t exploded—so I’m calling it a win.It’s easy to use, didn’t stink up the house, and seems like one of those “silent hero” products.Would I recommend it? Yeah. If it’s working behind the scenes, that’s exactly what I want.

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.

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 very well on tankless water heater.