Alright, so I finally got around to cleaning my AC unit with this coil cleaner, and wow—what a difference! Here’s the lowdown:

First off, application was a breeze. I used a cheap battery-powered sprayer (shoutout to Harbor Freight) and it worked like a charm. The cleaner cut through years of gunk like butter. Seriously, my coils looked brand new afterward—hard to believe they’d been chugging along for 15 years.

But fair warning: this job is MESSY. Like, 'wet/dry vac required' messy. My condensate drains clogged from all the dirt coming off, and I had to deal with runoff water pooling in the air handler. Not the cleaner’s fault—it was just doing its job too well!

The attic was sweltering, and I cursed myself for not doing this in spring or fall. Still, no way I could’ve gotten those coils clean without this stuff. It’s heavy-duty but totally worth the sweat equity.

Side note: If you’re expecting pro-grade results without pro-grade effort… adjust your expectations. This isn’t magic in a bottle (you still gotta scrub/rinse), but it’s the best DIY solution I’ve found.

Final verdict? 5/5 for effectiveness, 2/5 for fun factor. Buy it—just pick a cooler day than I did!