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phoinix | Staff 18.2K Views
Jun 27, 2026 10:20 PM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$6.35

$16

60% off
Walmart
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Deal Details
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
  • No rinse necessary for cleaning AC units

Editor's Notes

Written by Neo45 | Staff
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • 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.
No Longer Available:

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
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
  • No rinse necessary for cleaning AC units

Editor's Notes

Written by Neo45 | Staff
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • 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.
No Longer Available:

Original Post

Written by phoinix | Staff

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Community Reviews

This coil foaming cleaner is aimed at AC, mini split, and dehumidifier maintenance, and it can cut through heavy grime when the coils are accessible. It worked on a musky dehumidifier and on an AC unit that had not been cleaned in decades, though the latter took two cans. A garden hose rinse after the foam helped clear residue and improved efficiency. The main catch is fit and access, since some setups need a tube adapter or outer cover removal, and the foam may not reach every spot.

Common Questions (4)

  • It can work well on AC coils, including mini-splits and outside units. One report says it cleaned a decades-uncleaned AC unit after two cans, and another uses it yearly on mini-splits and the outdoor unit.

  • Yes, a tube adapter may be needed to direct the foam onto the evaporator coil, and for drain pans you may need to plug the tube into the drain plug. A universal tube adapter is specifically mentioned as a practical way to aim the foam where it needs to go.

  • It can, especially on heavily caked coils. One report says an older unit ran much more efficiently afterward, with cooling output improving enough that power consumption dropped by about 30% or more in another case.

  • A practical method is to use a garden hose on jet, spray from the inside out on the first pass, then flush from the outside after it dries to remove residue. That approach was reported to clear heavy buildup and improve AC efficiency.

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28 Comments

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Jun 28, 2026 3:22 AM
37 Comments
Joined Aug 2019
ScarletSummer5900Jun 28, 2026 3:22 AM
37 Comments
Good deal. Just bought two cans of a competitor product from Home Depot today for $10/bottle
Jun 28, 2026 4:24 AM
99 Comments
Joined Feb 2016
sierra_skylineJun 28, 2026 4:24 AM
99 Comments
ordered this from walmart and amazon in the past 2 month, both cancelled without reason. I assume is cause im in california
1
Jun 28, 2026 5:03 AM
861 Comments
Joined Nov 2005
391412Jun 28, 2026 5:03 AM
861 Comments
Good Deal - in for 2 - Got an extra 32cents off each with S&S
Last edited by 391412 June 27, 2026 at 10:06 PM.
Jun 28, 2026 5:07 AM
1 Comments
Joined Jun 2026
ScarletRaccoon9659Jun 28, 2026 5:07 AM
1 Comments
Quote from sierra_skyline View quoted comment :
ordered this from walmart and amazon in the past 2 month, both cancelled without reason. I assume is cause im in california
Also in CA, ordered from Walmart a few months ago, order was delivered fine. Used it on my dehumidifier that was getting musky. Worked pretty good.
Jun 28, 2026 5:22 AM
277 Comments
Joined Dec 2007
winewindJun 28, 2026 5:22 AM
277 Comments
Can I use this to clean the cabin air filter area for cars?
3
Jun 28, 2026 5:42 AM
307 Comments
Joined Nov 2017
legolas.mcmJun 28, 2026 5:42 AM
307 Comments
Use this on my mini splits every year along with the outside unit.
Jun 28, 2026 10:28 AM
8 Comments
Joined Jan 2026
HonestShoe199Jun 28, 2026 10:28 AM
8 Comments
Amazon is matching the price. Got 3 cans, great deal!

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Jun 28, 2026 10:35 AM
77 Comments
Joined Aug 2018
MichaelM6202Jun 28, 2026 10:35 AM
77 Comments
Quote from winewind View quoted comment :
Can I use this to clean the cabin air filter area for cars?
Yes. You might need a tube adapter and plug the tube in the drain plug
Jun 28, 2026 10:50 AM
25 Comments
Joined Dec 2015
amac10107Jun 28, 2026 10:50 AM
25 Comments
Could this be used for a vehicle AC?
Jun 28, 2026 12:39 PM
77 Comments
Joined Aug 2018
MichaelM6202Jun 28, 2026 12:39 PM
77 Comments
Quote from amac10107 View quoted comment :
Could this be used for a vehicle AC?
Yes, but you will need a tool to direct the foam to the evaporator coil, like a universal tube adapter.
Jun 28, 2026 2:00 PM
1.9K Comments
Joined Aug 2007
OrangeJuliusJun 28, 2026 2:00 PM
1.9K Comments

Our community has rated this post as helpful. If you agree, why not thank

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.
2
Jun 28, 2026 3:23 PM
475 Comments
Joined Dec 2003
p0werb0bJun 28, 2026 3:23 PM
475 Comments
works great really cleans it out
Jun 28, 2026 4:07 PM
1.5K Comments
Joined Jun 2006
mcali786Jun 28, 2026 4:07 PM
1.5K Comments
Quote from OrangeJulius View quoted comment :
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?
Jun 28, 2026 5:11 PM
4.7K Comments
Joined May 2007
hy_tekJun 28, 2026 5:11 PM
4.7K Comments
Some of this stuff is too harsh for the coils and eats them up. Not sure about this one. Out of stock now.
Last edited by hy_tek June 28, 2026 at 10:14 AM.

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Jun 28, 2026 8:21 PM
1.9K Comments
Joined Aug 2007
OrangeJuliusJun 28, 2026 8:21 PM
1.9K Comments
Quote from mcali786 View quoted comment :
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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Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!