AC Gel Pucks - 140 Tablets- For 1 Ton Units-Professional-grade HVAC maintenance Gel Lock Technology. Stops clogs & overflow damage. Safe, odor-free. ACs, heat pumps, refrigerators, dehumidifiers.

I got these for my 5 ton AC unit. My unit is newer but we live in a construction zone with an open attic and that's where our unit is located. I put a few of these into my condensation tray and have noticed my drain is cleaner. Overall these are not the right size for my unit so I do use a few tablets but it does the job still. I would recommend these tablets but in the future I'd probably buy the larger tablets so I don't need to add as often.