Frost King ACF19 Foam Coil Cleaner 1 18 Pound Pack of 1 19 Ounce

Frost King ACF19 Foam Coil Cleaner has been absolutely essential for maintaining our air conditioning system efficiency and has restored cooling performance that was noticeably declining due to dirty coils! As a homeowner who prefers DIY maintenance when possible but needs products that deliver professional-level results, this foam cleaner provides exactly the cleaning power needed to keep HVAC systems running optimally. The foam application system is incredibly effective at penetrating and lifting the stubborn dirt, debris, and buildup that accumulates on evaporator and condenser coils over time. Unlike liquid cleaners that run off quickly, this foam clings to surfaces long enough to break down contaminants thoroughly, ensuring complete cleaning rather than surface-level results. What impressed me most is the dramatic improvement in cooling efficiency after using this cleaner on coils that had become visibly dirty despite regular filter changes. The air conditioning system now cools faster, runs shorter cycles, and maintains consistent temperatures throughout the house, proving that proper coil maintenance directly impacts system performance. The 19-ounce size provides excellent coverage for complete residential HVAC system cleaning with enough product remaining for future maintenance cycles. The quantity is perfectly proportioned for homeowner use - sufficient for thorough cleaning without waste while being cost-effective compared to professional service calls. The ease of application makes this accessible for DIY maintenance without requiring professional equipment or extensive technical knowledge. The foam sprays evenly and consistently, making it simple to achieve complete coil coverage without missing areas that could compromise cleaning effectiveness. The cleaning action is powerful yet safe for coil materials, effectively removing buildup without causing corrosion or damage to delicate aluminum fins or copper tubing. The formulation appears specifically designed for HVAC applications rather than being a generic degreaser that might harm sensitive components. The rinse characteristics work perfectly with standard garden hose pressure, washing away completely without leaving residue that could attract new dirt or interfere with heat transfer efficiency. The clean rinse eliminates concerns about cleaner buildup affecting system performance or air quality. The odor control benefits have been noticeable in eliminating musty or stale smells that can develop when dirty coils harbor bacteria or mold growth. The fresh, clean scent after treatment indicates thorough cleaning that addresses both performance and air quality concerns. The preventive maintenance value is substantial for extending HVAC system life and maintaining energy efficiency that reduces utility costs. Regular coil cleaning with this product helps prevent expensive system repairs and maintains peak performance that justifies the minimal investment in maintenance supplies. The professional results at DIY pricing make this an outstanding value compared to service calls or professional cleaning costs. The effectiveness rivals what HVAC technicians achieve while being accessible for regular homeowner maintenance schedules. For homeowners committed to proper HVAC maintenance who want professional-quality cleaning results without service call expenses, this foam coil cleaner delivers exactly the cleaning power and ease of use needed to maintain system efficiency and extend equipment life through proper preventive care. Read more

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! Read more

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. Read more

Frost King ACF19 is the easiest way I’ve found to clean my outdoor AC condenser coils without turning it into a full-day project. Just shut off the unit, spray it on, let it foam up like a root beer float, and watch years of Arkansas dust, cottonwood fluff, and mystery grime drip out the bottom. No rinsing, no scrubbing, and my AC runs noticeably cooler and quieter afterward. Pros: • Heavy-duty foaming action — Expands and lifts embedded dirt, pollen, and grease way better than just hosing it off • Truly no-rinse formula — Foam dissolves and drains away on its own; perfect for condenser coils • Big 19-oz can — Plenty of product for a full-size unit (usually one can does the whole coil) • Improves efficiency fast — Electric bill dropped and unit cycles less after one application • Simple DIY — No special tools or pro needed; anyone can do it in 15–20 minutes Cons: • Strong chemical smell while it works — Do it on a breezy day and keep pets/kids away until it airs out • Can sputters near the end — Shake well and use short bursts to get every last bit • Over-spray happens — Cardboard shield recommended so you don’t bleach the grass or siding If you’re in a hot, dusty area like Camden and your AC is struggling every summer, this Frost King foam cleaner is cheap insurance. One $15 can saves you a $150 service call and keeps the unit happy longer. Absolute garage essential—5 stars! Read more

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. Read more

Really foams into every bit of the fins to loosen dirt and rinse it out. This cleaner works great. Large cans also. Read more

Good cool cleaner to use on A/C units. Does the job. Recommended. Read more