HVAC GUYS – Flow Treat Tabs - 200 Tablets | AC Drain Line Cleaner | Prevents Odors, Keeps HVAC Drain Pan Clean, Prevents Overflow | One Tablet Lasts up to 4 Weeks

I was having an issue with my drip pan clogging, ever since I bought these I have had zero issues with gunk building up. Just toss two or three tablets in occasionally and forget about it for a month or two. Very good quality and last you awhile! Water flows perfectly now and easy to use! 200 tablets will last you a long time!

Works very well. Toss them in and they do the job. Breaks down the slime and dirt. Flushes it out and helps the pipes drain.

Works great! I am so glad I got these. I am thrilled that I don’t have to pour vinegar or bleach in my AC drains anymore. I was always scared of spilling the solutions outside the drain and onto my floors but no problem now. I just drop in the tablet and I am done. Now to make this even better I wish they gave you a little check off calendar that you could mark when you put the tablet in for that month.

I use a lot of these tablets throughout the year in my own dehumidifiers, humidifiers and AC units to prevent mold and microbial growth. These tablets are a necessity since everything is so poorly designed anymore, sometimes to eeek out .01% more efficiency, or save a penny in manufacturing. Stagnant water is a big problem, especially with modern window AC units. In the past, I would use Pan Tablets from a local big box store. Each tablet would take anywhere from a week to 4 weeks to dissolve depending on the water flow. This is not a submerged application. We are talking about a trickle of water in a drain pan application. I assumed this large bottle of tablets were the same exact thing at more of a bulk price. Same color. Same size. Possibly the same general ingredients based on what I researched. But I don't think so. Upon opening the bottle, I got a strong whiff of ammonia. The other brand has no odor whatsoever. Additionally these seem to dissolve very quickly. One tablet is gone within an hour versus days or weeks with the other brand in the same low water flow environment. So because of these issues, I'm deducting one star, and may need to go back to using the other brand after more evaluation.

These tablets work well, and they are MUCH less expensive than any other brand I could find. From now on I will be adding one tab per ton every time I change the filter. I will definitely be purchasing these again when this jar runs out (a year from now). I highly recommend using these to eliminate algae growth and stale odors in your AC system.