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

I was skeptical, but the Frost King ACF19 Foam Coil Cleaner truly delivered! My AC coils were gunked up with oil and hair, and I was dreading the thought of scrubbing them. I sprayed this foam on, and it went to work instantly. After letting it sit for just a few seconds, it completely broke down all the grime. All I had to do was rinse it away – no scrubbing, no manual labor whatsoever! My coils are sparkling clean, and my AC is running much more efficiently. If you're looking for an easy and effective coil cleaner, this is definitely the one to get. Highly recommend!

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!

Got this product to clean the return air vent in my hallway that I hadn’t cleaned in the 25 years I have lived here. It had a build up of dust and grime. The foaming spray has a clean, pleasant smell and was mostly effective at loosening the dirt on the vent. I did need to scrub with a stiff bristle brush to remove the stubborn stains. Used a spray bottle with clean water to rinse the cleaner off after laying a towel down to catch drips. I would recommend this product.

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

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.

Worked great for cleaning the compressor and evaporator coils. We moved into a house where maintenance was not high on the previous owner's priority list. The 15 year old A/C was running non-stop, the evaporator coil was freezing over, and sweating everywhere and it wasn't cooling. The upstream side of the evaporator coil was covered in dust and pet hair. I used the compressor and some air to blow the majority of that out from the downstream side, then thoroughly coated both sides of the coil, let it sit, then reapplied to the dirtier sections. It was evident the grime was dissolving and starting to run into the drip pan. I like the self-rinsing aspect. More about that later. Also a good time to make sure the drain line is cleared. Now for the compressor coil. I rolled up my sleeves and dove in I disconnected power to the compressor unit, removed the fan and coil shroud, liberally sprayed the entire coil and let it sit, per the instructions, then I used the hose on a gentle spray from the inside (avoiding electrical components). Put it all back together, with those frustratingly small sheet metal screws, and turned the power back on. I was expecting the residue on the evaporator coil to send a smell through the entire house, so we initially opened a bunch of windows and doors, before turning the air back on. The citrus smell was apparent, but not unpleasant. The airflow was much better, and as it rinsed itself from the coils, over the course of the next day, airflow improved even more. We saved a few hundred dollars on a tech cleaning our unit and we know it was done thoroughly. It may get us through another summer

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.

This stuff is incredibly AMAZING! I bought it this summer to try and clean the disgusting AC unit in my apartment. I could not afford the LG Dual Inverter that I wanted and my LL wasn't going to buy anything because "nothing wrong Paul! It still work my friend!" Yah, barely. So I looked into things on YouTube and a deep clean was suggested along with how to do it. First off, I didn't do the deep clean because the unit is like sealed in the wall. Second, there was literally YEARS of tobacco tar on the inside coils from the previous tenant! So I moved all my crap from around it, laid a towel down, shook the can real good per directions and SPRAYED!! The nozel shoots out a very fine, but powerful beam that you can direct right up in all those nooks and crannies, then it instantly foams completely filling the cavity! And just as fast as it foams, it starts to break down and liquefy, and so to does all the GUNK the foam is touching!! Like literally that freaking fast!!! It all just starts to run down!!! The lid serves as a super handy scrub brush which works wonders too! I then took a spray bottle and shot water to help rinse everything down. All of this "run down" just fell into drip pan and actually unclogged it!! The coils are BLUE!! I never knew that! Like a bright, shiny, sky blue! So after rinsing was done, I put the panel and face cover all back on and fired it up and HOLY MOLEE what an amazing difference!! As you may tell from this review, I was not expecting this level of performance from this product. I had resigned myself to being ok with a cleaner AC unit with residual tar for this last summer, not a completely shiny, absolutely sparkling, sanitized-looking one! All of this done with one can, minimal scrubbing, and a courtesy brush on lid for $10!!!! I spent more time just rinsing the gunk down with spray bottle then I did scrubbing. I still can't believe how wonderful this stuff works. It's worth 2, or even 3 times its current SRPDon't hesitate, do yourself a favor and BUY this, clean your unit, and hell, don't even bothering taking out of your wall or window, just do it right there! This stuff is so easy to control so as to not have spill over on your walls. Thank you Frost King!!!