Walmart has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free with Walmart+ (Free 30-Day Trial) or orders $35 or more.
Thanks to Deal Hunter phoinix for sharing this deal.
About this product:
Foam cleans coils fan blades and reusable air filters
Heavy-duty detergent dissolves stains grease oil and loosens dirt
Neutralizes odors from standing water in drain pans
Low VOC formula with pleasant lemon fragrance leaves fresh smell
Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.
Additional Information:
This offer matches our recent and very popular front page deal from June 2026 which earned over 75 thumbs up.
Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
This collaborative space allows users to contribute additional information, tips, and insights to enhance the original deal post. Feel free to share your knowledge and help fellow shoppers make informed decisions.
Walmart has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free with Walmart+ (Free 30-Day Trial) or orders $35 or more.
Thanks to Deal Hunter phoinix for sharing this deal.
About this product:
Foam cleans coils fan blades and reusable air filters
Heavy-duty detergent dissolves stains grease oil and loosens dirt
Neutralizes odors from standing water in drain pans
Low VOC formula with pleasant lemon fragrance leaves fresh smell
Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.
Additional Information:
This offer matches our recent and very popular front page deal from June 2026 which earned over 75 thumbs up.
Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price".
Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.
This is a foaming cleaner for air conditioner coils, mini-splits, and even dehumidifiers, and it can cut through heavy buildup when the coils are accessible. It has been used successfully on units caked with dirt and dandelion fluff, and a thorough rinse afterward can leave the system running more efficiently. The main catch is access, since some units need the outer frame removed and the foam may need a tube adapter to reach the evaporator coil or drain pan. It is a practical maintenance cleaner if you are prepared for a bit of disassembly and cleanup.
Homeowners cleaning a neglected air conditioner coil, because the foam can lift years of caked-on dirt and improve cooling efficiency after rinsing.
Yes. It may need a tube adapter to direct the foam onto the evaporator coil, and for drain pans the tube can be plugged into the drain plug. The cleaner is easier to apply when you can aim it into the coil area instead of spraying blindly.
Yes. After cleaning a heavily caked unit and rinsing out residue, the AC ran much more efficiently and cycled on less often for the same cooling. Another cleaned unit showed a noticeable efficiency gain and a power drop of 30% or more.
A badly caked coil can take 2 cans to fully clean. One unit that had not been cleaned in decades needed two cans to remove years of dandelion fluff and dirt.
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This stuff indeed works, and works well. I had an AC unit that hadn't been cleaned in decades, and had years of dandelion fluff and dirt caked on. It took 2 cans, but eventually I was able to clean it all off with this stuff.
This stuff indeed works, and works well. I had an AC unit that hadn't been cleaned in decades, and had years of dandelion fluff and dirt caked on. It took 2 cans, but eventually I was able to clean it all off with this stuff.
Spray it and let it sit for few mins and use garden hose low flow setting to outward direct the water from fins right?
Spray it and let it sit for few mins and use garden hose low flow setting to outward direct the water from fins right?
I ended up using the jet setting on my garden hose, because my water pressure isn't that high to begin with. Indeed, I sprayed from the inside out on the first pass. After it was dry, I flushed from the outside to remove any residue. It was seriously caked.
AC unit is running much more efficiently now, much less often for the same result.
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Community Reviews
This is a foaming cleaner for air conditioner coils, mini-splits, and even dehumidifiers, and it can cut through heavy buildup when the coils are accessible. It has been used successfully on units caked with dirt and dandelion fluff, and a thorough rinse afterward can leave the system running more efficiently. The main catch is access, since some units need the outer frame removed and the foam may need a tube adapter to reach the evaporator coil or drain pan. It is a practical maintenance cleaner if you are prepared for a bit of disassembly and cleanup.
Common Questions (4)
Yes. It may need a tube adapter to direct the foam onto the evaporator coil, and for drain pans the tube can be plugged into the drain plug. The cleaner is easier to apply when you can aim it into the coil area instead of spraying blindly.
Yes. It has been used on mini-splits every year along with the outdoor unit, and it also worked well on a dehumidifier that had become musky.
Yes. After cleaning a heavily caked unit and rinsing out residue, the AC ran much more efficiently and cycled on less often for the same cooling. Another cleaned unit showed a noticeable efficiency gain and a power drop of 30% or more.
A badly caked coil can take 2 cans to fully clean. One unit that had not been cleaned in decades needed two cans to remove years of dandelion fluff and dirt.
AI-generated summary based on comments from the community. Updated ago
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AC unit is running much more efficiently now, much less often for the same result.
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Share your experience with the Slickdeals community
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