HVAC Guys Flow Tabs with Gel Lock Technology - 18 Pack - Keeps Drain Pans Clean, Prevents Overflow, 3 Ton Tab Lasts up to 3 Months - 1 Tab is equal to 18 Regular Tablets (324 total) - Made in the USA

It works not sure for how long but it starts unclogging immediately.

I put a mini-split in my home office so I can condition just that space to the temp I prefer when I'm the only one home. I love it, but the condensate line starts getting backed up with "gunk" (super scientific term) after only a month or so and when that happens, the condensate tray holds water and the fan starts spitting it out into the room. I cut these tablets up into 4 pieces and slip 1/4 tab at a time into the condensate tray on the first of the month and that problem has stopped. It'd be cool if they made these even smaller for those of us using these for mini-splits, as they tend to crumble a bit when you cut them, but the product definitely works and it's worth the effort to keep the condensate line running clear.

Love the idea of these, but you need to know how to open up your furnace to get to the condensate pan. I love that you can stack these and get by without adding tablets for maybe a year or so. For most, you may want a spray version from the V brand. You can spray it in the pan and also the condensate pipe.

So after reading many review I decided on this product. I've been having an issue with my 1 year old ac window unit clogging. I live in Florida it is very humid and I run this unit year round unfortunately the drain to the drip pan started clogging. Luckly on window unit it is easy to access but it is hard to find metal cloth hangers these days. I did manage to MacGyver something to declog the drain. It didn't last long and I started to notice a slimy build up. After a 20 mins of Webucation and a few hours of review I got this product. At first I was cutting the in half to finagle the into the front drip pan but the desolve to easly when cut. I hope they decide to make smaller ones for windows unit. I started using whole disk in front drip pan. Take a little work to get it in the but seems fine. These things are amazing it de-slimed my unit and got rid of the musty smell comming from the unit.

I read the earlier review that the chips can be stacked like poker chips in the pan, so, the higher the stack, the more months your system is protected. I would make wider chips for higher stacks so the pan stays protected for years.

we use these in hvac dehumidifiers for swim schools and with that high of humidty they do not last long at all and do not work as well as they do in a basic hvac system.

Recomendado. Muy bueno.

After utilizing these tablets, I have not had one issue with my AC drain line backing up. I am happy with this product purchase it approximately a year ago so far working perfectly.