Nu-Calgon 4296-60 Pan-Treat Scum 200 Tablets

Pretty effective but this things go by in the first few days they are done but for sure clean the pipe

Cleans my ac very well it removes all the buildup and it is very easy to use and most importantly very effective. Removability it’s very good

Worked within 24 hours to eliminate scum out of a/c lines that were clogged. Very easy to use.

Tablets for keeping heat pump drain lines clean. 1.5 ton air handler uses 3 tabs internal pan, add additional monthly. My hvac man said ri toss 2-3 in back corner of overflow pan and 2 in internal pan, add new ones monthly. If internal coil pan is hard to access you can dissolve in warm water and pour in line directly (my unit has two drain lines with blow out access points. Medium to large size tablets similar to denture soak tabs. Good price for years supply vs buying bottle if liquid and convenient to use (no spilling, no jugs of vinegar and funnels needed. Use heavier dose on first use then can use approx 1 tab per ton thereafter. I’ll do anything not have yet another leak from attic

Just drop one tablet in your AC's condensate drain trap to prevent it from clogging with algae. Easy to use and effective.

Works as expected. Great product, great price.

this is very good product, it remove and ease to use, with high durability is a clog removal

I have a 4 unit apartment Building I do the maintenance on. The humidity is very high here. I used these pellets in all of the Air-conditioner handler trays to control the scummy yucky build up they get without using these pellets. The stuff that clogs up the AC drain pipes. We are talking about really nasty stuff growing in the Coil trays and drain pipes over time and these eliminate it. Are there other similar pellets on the market that work as well and last longer. I honestly don't know. These lasted about 30 days. However, this is South Florida and my tenants run the Air-Conditioner harder than most keeping their units between 70 to 74 degrees. So, lots of water running constantly around the pellets.