Frost King ACF19 Foam Coil Cleaner, 1.18 Pound (Pack of 1), 19 Ounce

I used the Frost King ACF19 Foam Coil Cleaner on my air conditioner unit, and I couldn’t be happier with the results. My A/C had been running less efficiently lately airflow was weak and it just wasn’t cooling like it used to. I sprayed this cleaner on the coils, and within minutes the thick foam expanded, clung to the surfaces, and started breaking down all the built up dirt and debris.The best part? No rinsing or scrubbing needed,. however I did rinse it after the foam slowly dissolved and carried the grime away on its own. After letting it dry and turning the unit back on, I immediately noticed stronger airflow and cooler air. It honestly felt like the A/C had gotten a full tune-up.This cleaner is super easy to use, smells fresh, and one can covers a good amount of area. It also handled the job without damaging anything—perfect for regular maintenance. If your A/C hasn’t been cleaned in a while, don’t call a technician just ye, try this first. It works!

I purchased this after paying an air-conditioning company $100 to clean my AC unit. In my opinion I was able to do a professional quality job with this product. It is a great value. It’s easy to use and the foam fills the fins effectively and does a great job of pushing their debris out. Also, this product is rinse free! Which was nice because I didn’t have to drag a hose onto the roof and spray it into my air conditioning unit. I am not an AC technician this product was extremely easy to use for your average. I highly recommend this product. I plan on using it on my unit every spring. The effectiveness of my unit doubled after the cleaning!!I have included a before and after photo

Frost King Heavy Duty Foaming Cleaner. It's an emulsifier and it works better that Dawn, Orange Citrus & Simple Green. I tried them all. Short of getting a professional sprayer this stuff works.For me to clean the entire unit inside and out it takes at least 2 to 3 sometimes 4 cans. I remove the top enough to prop it up so I can get inside. If there are fins that need to be opened up, the cheesy cap don't work for me. I use feeler gauges, it takes a little time, so what, the purpose of the project is to do the job right.If you want the foam to penetrate deep into the fins, I use a rubber glove and rub it into the fins. (SAFETY NOTE: BE SURE TO USE RUBBER GLOVES IF YOU RUB THE CLEANER INTO THE COILS, IF NOT THE CLEANER WILL IRRATATE / BURN YOUR SKIN) ALSO, WEAR SAFETY GLASSES. Let the cleaner sit but not dry. That period of time depends on your environment. If it's hot out side obviously it will dry faster.The can says you don't need to rinse but don't you want to see the grime rinse away, instead of sitting there caking up. Don't be stingy with the water, rinse it good.Re-assemble the unit and fire it up. That will suck the water out from between the fins. You're Done, Saved yourself some money and it was done right.* If I could change anything about this product, it would be that the cleaning agent wouldn't foam until after it hit the surface for better penetration into the fins.U.S. Navy Chief (Ret.)

If I knew about this stuff before I would have been way happier with my past air conditioners! This stuff is super awesome and works so well at getting the dirt and grime out of the fins. It’s a quick process and left my ac smelling fresh and way better than before!! I highly recommend anyone with a AC to use this at the very least ONCE a year!!! I’m going to start using it when I first pull my AC out for the season and then right before I put it up.

Wow! This AC coil cleaner is super easy to use and acts fast to remove the summer dirt and build up from grass to pollen. Do both the inside and outside with only 1 can. Left cleaner on 5-8 min and rinsed with low presser garden hose. This product saves on the life of your outside heat pump and pays for itself the first month on your power bill. Ordering again for the next spring cleaning !

This Frost King ACF19 Foam Coil Cleaner got put to the test on a 3.5-ton AC condenser that looked like it hadn't been cleaned since flip phones were a thing. About 1.75 cans later, a shocking amount of dirt came pouring out—kind of like giving the unit a spa day after years in the desert.The cleaner foamed up nicely and clung where it needed to. One neat trick: instead of fully removing the condenser lid, just propped it up with an upside-down shop broom—worked like a charm and saved some hassle. The spray itself isn’t exactly cheap, but the can packs a solid amount of product, enough to really get the job done.Power usage is being monitored—recorded kWh usage the day before and the day after cleaning, with temperatures staying in the sweltering AZ 75–108°F range both days. If the theory holds, there should be a nice little dip in energy consumption thanks to cleaner coils doing less work.

Great product if you use it in the right scenarios. If you have a little bit of build up on your outdoor condenser coil, this stuff is great. You literally just spray it and let it foam up and sit for a few minutes, then turn your AC back on and it sort of self-rinses as the coil condensates. It does a very, very nice job cleaning up a coil with some slight dirt, pollen, cottonwood, etc. build up. That said though, if your coil hasn't been cleaned in years and it's a complete mess, this isn't going to work as well as a good ole fashion manual cleaning with some pressurized water and solvent. So I guess what I'd say is don't expect a miracle. If your condenser is a total mess, have it cleaned professionally and/or do a more thorough manual cleaning. But if you use this like I do, once per year at the beginning of "AC Season" and the condenser coil hasn't had a chance to become filthy and you're only doing a nice little general cleanup then this stuff does a nice job and it's super easy to use. Long story short, it's not going to bring an unmaintained 20 year old unit back from the dead, but it will absolutely give you a nice little preventative maintenance style cleanup at the start of cooling season.