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expiredJMCam posted Aug 18, 2025 3:03 PM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$4.55

$9.68

52% off
Walmart
17.1K Views
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Deal Details
Walmart has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $4.54. Shipping is free with Walmart+ (Free 30-Day Trial) or orders $35 or more. Otherwise, select store pickup where available.
  • Note: Availability for pickup may vary by location.
Thanks to Community Member JMCam for sharing this deal.

About this product:
  • Heavy-duty foam easily and effectively removes dirt, grease and oil from air conditioner coils and car radiators.
  • New low "VOC" formula, contains no CFCs, chlorinated or fluorinated solvents
  • Special 360-degree valve allows spraying in any position
  • Can also be used for car radiators, lawnmower engines, refrigerator and freezer coils, condenser and evaporator coils, metal filters, fan blades and more
  • Cleaning coils increases efficiency and saves money
  • The clinging foam is completely self-rinsing on condensate producing coils
  • Citrus fragrance neutralizes odors

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • 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:
    • Our research indicates that this deal is $5.45 less (55% savings) than the next best available price from a reputable merchant with prices starting from $9.99 at the time of this posting.
    • Rated 4.4 out of 5 stars at Walmart based on 220+ customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by JMCam
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 $4.54. Shipping is free with Walmart+ (Free 30-Day Trial) or orders $35 or more. Otherwise, select store pickup where available.
  • Note: Availability for pickup may vary by location.
Thanks to Community Member JMCam for sharing this deal.

About this product:
  • Heavy-duty foam easily and effectively removes dirt, grease and oil from air conditioner coils and car radiators.
  • New low "VOC" formula, contains no CFCs, chlorinated or fluorinated solvents
  • Special 360-degree valve allows spraying in any position
  • Can also be used for car radiators, lawnmower engines, refrigerator and freezer coils, condenser and evaporator coils, metal filters, fan blades and more
  • Cleaning coils increases efficiency and saves money
  • The clinging foam is completely self-rinsing on condensate producing coils
  • Citrus fragrance neutralizes odors

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • 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:
    • Our research indicates that this deal is $5.45 less (55% savings) than the next best available price from a reputable merchant with prices starting from $9.99 at the time of this posting.
    • Rated 4.4 out of 5 stars at Walmart based on 220+ customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by JMCam

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49 Comments

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Aug 18, 2025 11:43 PM
6.7K Comments
Joined Dec 2004
CaleoAug 18, 2025 11:43 PM
6.7K Comments
Quote from JenT4685 :
Sorry if this is a dumb question, but I'm confused as to where exactly id spray it on an outside central air unit.
The fins.
With many central air units, you'll want to take off the outer housing to get good access to the condensation coils.
Expert
This user is an Expert in Tech & Electronics
Aug 19, 2025 12:11 AM
20.4K Comments
Joined Sep 2011
bluekiwi
Expert
This user is an Expert in Tech & Electronics
Aug 19, 2025 12:11 AM
20.4K Comments

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

Quote from JMCam :
Great price. $19 on Amazon and normally $9.68 at Wally World.

https://www.walmart.com/ip/207030...f876854ece
$4.54 on Amazon
https://www.amazon.com/SAFE-Foami...B007I7KZN0

Have used in the past, usually just once a year, average outside unit will take between 2 and 3 cans
Last edited by bluekiwi August 18, 2025 at 05:13 PM.
1
Aug 19, 2025 12:22 AM
451 Comments
Joined Dec 2005
iivisioniiAug 19, 2025 12:22 AM
451 Comments
Same price on Amazon now
Aug 19, 2025 12:46 AM
605 Comments
Joined Sep 2016
crayboiAug 19, 2025 12:46 AM
605 Comments
Repped picked up 2 to have on hand, most brands of these are $18.

Be aware some air handlers can't be opened to access the coils like my old build spec home.

Also this is good use for Tesla AC funk too, fyi.
1
Aug 19, 2025 12:51 AM
6.3K Comments
Joined Apr 2008
stasisAug 19, 2025 12:51 AM
6.3K Comments
Simple Green/Purple Power/Super Clean should work too
1
Aug 19, 2025 1:01 AM
414 Comments
Joined Jun 2010
tmaxam99Aug 19, 2025 1:01 AM
414 Comments
Quote from Caleo :
Not going to be as good/thorough of a cleaning, especially if there's a lot of really caked on debris. You can do it the lazy way and get half-baked results, or you can put in a tiny bit more effort using a hose and get it properly clean. If you're spending money on a product, might as well ensure you get good results with it eh?
My coils are in the attic and don't want to spray water up there. I have taken a bug sprayer up there and rinse with It. If you maintain your system, it should not be full of junk.
Aug 19, 2025 1:01 AM
3K Comments
Joined Dec 2012
MMPGAug 19, 2025 1:01 AM
3K Comments
Anyone used this on Tesla?

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Aug 19, 2025 1:23 AM
414 Comments
Joined Jun 2010
tmaxam99Aug 19, 2025 1:23 AM
414 Comments
Quote from SmoothCriminal :
Whatever you do, don't leave any residue on your coil. It'll eat the metal over time and cause a refrigerant leak which will easily cost 10x the savings of cleaning yourself
Turn off the power to the unit, shake the can well, and spray the cleaner onto the coils, avoiding electrical components. The self-rinsing formula will break down and rinse away the dirt and grime, but you can also rinse with water if desired. No need to rinse unless you have neglected.
Aug 19, 2025 1:24 AM
4K Comments
Joined Sep 2018
EfficientSnail709Aug 19, 2025 1:24 AM
4K Comments
I don't have the time to read all of these comments (as this may have been covered already)....but if you're using this to clean a window/through the wall A/C, unless you physically remove it, move it outdoors and use a garden hose (with a powerful spray attachment) to flush the accumulated crap out, using this can of foam is a waste of time and money! All that it does is loosen up the surface dirt/debris! I love the reviews where people spray it on the surface of the coil, wipe it off (or use a toothbrush or other type of brush), and pretend that it's nice and clean! That's superficial nonsense, since the entire coil needs to be flushed out! It gets clogged from front to back! Trust me, if you use a powerful water spray (steam cleaning is even better), you don't even need this can of crap! Just brush the surface dirt away and blast it with water!....but make sure to cover the motor and electrical component box with plastic as a precaution!
Last edited by EfficientSnail709 August 18, 2025 at 06:40 PM.
3
Aug 19, 2025 1:27 AM
950 Comments
Joined Dec 2003
judynericAug 19, 2025 1:27 AM
950 Comments
Quote from Caleo :
Not going to be as good/thorough of a cleaning, especially if there's a lot of really caked on debris.
You can do it the lazy way and get half-baked results, or you can put in a tiny bit more effort using a hose and get it properly clean. If you're spending money on a product, might as well ensure you get good results with it eh?
It's worth it to remove the casing (unless it's insanely complicated) so you can get much better angles to spray it clean.
Aug 19, 2025 1:29 AM
4K Comments
Joined Sep 2018
EfficientSnail709Aug 19, 2025 1:29 AM
4K Comments
Quote from tmaxam99 :
Turn off the power to the unit, shake the can well, and spray the cleaner onto the coils, avoiding electrical components. The self-rinsing formula will break down and rinse away the dirt and grime, but you can also rinse with water if desired. No need to rinse unless you have neglected.
Congratulations (on copying the manufacturer's information here)!....you've now (sort-of) cleaned only the surface of the coil! What about all of the dirt and debris that's accumulated throughout the entire coil?? I guess we'll just leave it all there and pretend that we really cleaned the coil!🤣
Last edited by EfficientSnail709 August 18, 2025 at 08:00 PM.
Aug 19, 2025 1:32 AM
414 Comments
Joined Jun 2010
tmaxam99Aug 19, 2025 1:32 AM
414 Comments
Quote from EfficientSnail709 :
Congratulations!....you've now (sort-of) cleaned only the surface of the coil! What about all of the dirt and debris that's accumulated throughout the entire coil?? I guess we'll just leave it all there and pretend that we really cleaned the coil!🤣
You must not change your filter or too cheap to use a filter.
Aug 19, 2025 1:37 AM
4K Comments
Joined Sep 2018
EfficientSnail709Aug 19, 2025 1:37 AM
4K Comments
Quote from tmaxam99 :
You must not change your filter or too cheap to use a filter.
That's beyond ridiculous!! What does one thing have to do with the other?? I clean my (permanent) filters frequently, FYI! If you want to pretend that just spraying this crap on a coil is effective at actually cleaning the entire coil, enjoy yourself!....you're in good company here! There are many here who trust the hype and think that spraying this junk on the surface area of the coil actually "cleans" the coil!🤣
Last edited by EfficientSnail709 August 18, 2025 at 08:02 PM.
Aug 19, 2025 1:49 AM
79 Comments
Joined Dec 2007
fathead689Aug 19, 2025 1:49 AM
79 Comments
Amazon matched the price so I picked up from there.

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Aug 19, 2025 1:58 AM
203 Comments
Joined Nov 2022
FantasticCrayon4916Aug 19, 2025 1:58 AM
203 Comments
This is actually a good product but one needs to dismantle their a/c unit to get good access to the outside but most importantly the inside. Leaves build up inside of a whole house ac unit plus air to cool the coils is pulled through the coils then out the top of the unit. Thus to clean it correctly one needs to be able to spray from the inside out (as well as outside in). Be careful not to bend the coil fins, they are very delicate & easy to flatten which stops air flow. I've tried to straighten some fins over the years but even with the proper tool it's not easy to do. Lots of good videos at YouTube on the process. Also be sure to flip your ac breaker off so it doesn't start when apart !! And yes you DO want to rinse this off with water, do the job correctly…

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