Clean Flow HVAC Drain Line Treatment Tabs, 4-Pack, 24 Count

this works great everytime for my hvac to keep it clear from clogging

These were recommended by my HVAC tech to keep drain pans and lines clean. Using straight bleach or vinegar caused odors in the house for a couple days after cleaning but these do not do that.I use one in the drain tube every 30 days during the summer when AC runs 24/7 and every 60 days during the off season.They are small enough to be dropped through 1inch PVC drain lines.

Do you have a condensation pump? Do you use a HVAC ?I put one every two months in my pump ( useually used near heating system)There is usually one hole in pump cover not used. Drop one in there.If you never have done that.. open yours up and look at scum..using these gone and since I did this from day one on our 9 year old system and the hose that carries the water away is practically clear.Now the AC I have the unit , in my attic, drain into our gutter. Last few years I noticed scum at down spout.Knowing how it cleared up condensation pump I put one in unit. After a while scum gone.I now do that once a month during AC season.

Easy to use . A must maintenance for mini-split condenser to prevent overflows.

I use these every two months by dropping them in the drain line. I’ve still had some drain line issues but not as much as in the past.

This tablets really work. I have been using them for about 6 years now without any backup issue.

Good quality , good price.

Keep reordering. Keeping our lines clear! 2 tabs every 4-6 weeks for us!