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expiredJMCam posted Aug 18, 2025 03:03 PM
expiredJMCam posted Aug 18, 2025 03:03 PM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$4.55

$9.68

52% off
Walmart
50 Comments 14,067 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

Community Voting

Deal Score
+68
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Top Comments

Caleo
5773 Posts
1098 Reputation
If you've got AC unit (window, mini-split, or central air) that has gone a year or two (or more) without a good cleaning, get this and use it. You'll notice a difference, trust me.

Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.
1 can should be good for at least 2 or 3 cleanings of a window AC unit.
bluekiwi
18217 Posts
3580 Reputation
$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
drawz
1555 Posts
346 Reputation
There is a lot of confusion in this thread about cleaning the condenser vs evaporator coils.

The evaporator is the indoor coil inside your air handler. This should be fairly clean if you change your air filter regularly, but they do occasionally develop mold if they don't dry out sufficiently (or it's a unit that runs continuously). Cleaning this will help with air quality and maybe efficiency. You're not going to hit this with a garden hose, but some people use a garden sprayer to rinse or even to spray cleaner (which you can buy as a concentrate instead of this can if you're going this route). These coils are also where you have condensation that can rinse the coil, so it's less import to rinse the cleaner. This cleaner is designed to not require rinsing per the manufacturer.

The condenser lives outside, so there is no filter and it's susceptible to dirt/pollen/leaves from the environment and tends to get much dirtier. There is no condensation here and a lot more dirt, so rinsing is more beneficial. It's also easier to get out your garden hose to do so.

This cleaner can be used for both evaporator and/or condenser coils. Not sure if it's approved for car use, but there are similar ones designed specifically for cars. Not sure what the difference would be though.

49 Comments

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Aug 18, 2025 04:40 PM
388 Posts
Joined Dec 2011
mrviper100Aug 18, 2025 04:40 PM
388 Posts
Never used this before, but would like to give it a shot.
Aug 18, 2025 08:53 PM
252 Posts
Joined Mar 2008
sdeanAug 18, 2025 08:53 PM
252 Posts
This is good stuff...I've used it before with old ACs
Aug 18, 2025 09:17 PM
124 Posts
Joined Oct 2009
muylocoAug 18, 2025 09:17 PM
124 Posts

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

Certainly a good quality AC cleaning product, been using it on/off for over 20+ yrs
2
Aug 18, 2025 09:17 PM
5,773 Posts
Joined Dec 2004
CaleoAug 18, 2025 09:17 PM
5,773 Posts

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

If you've got AC unit (window, mini-split, or central air) that has gone a year or two (or more) without a good cleaning, get this and use it. You'll notice a difference, trust me.

Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.
1 can should be good for at least 2 or 3 cleanings of a window AC unit.
5
Pro
Aug 18, 2025 09:24 PM
426 Posts
Joined Dec 2005
iivisionii
Pro
Aug 18, 2025 09:24 PM
426 Posts
Good deal, but not available in store anywhere near me. Shipping only.
Aug 18, 2025 09:24 PM
168 Posts
Joined Nov 2022
FantasticCrayon4916Aug 18, 2025 09:24 PM
168 Posts
Just bought 2 cans last week to use on my daughter's AC unit, I believe the HD price was $6-$7
Aug 18, 2025 09:27 PM
4 Posts
Joined Jun 2025
MagentaEducation252Aug 18, 2025 09:27 PM
4 Posts
I don't even spray it off. The condensation with use will rinse off naturally.
1
2

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Aug 18, 2025 10:16 PM
463 Posts
Joined Oct 2014
batavooshAug 18, 2025 10:16 PM
463 Posts
Quote from Caleo :
If you've got AC unit (window, mini-split, or central air) that has gone a year or two (or more) without a good cleaning, get this and use it. You'll notice a difference, trust me. Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.1 can should be good for at least 2 or 3 cleanings of a window AC unit.
So this is the outside version, and the $40 version is for the inside?
Aug 18, 2025 10:22 PM
313 Posts
Joined Jun 2010
tmaxam99Aug 18, 2025 10:22 PM
313 Posts
Quote from MagentaEducation252 :
I don't even spray it off. The condensation with use will rinse off naturally.
Yes, If you have a split type, spray it on and just let it be. When your AC is running the coils condensation will rinse it off.
Aug 18, 2025 10:37 PM
5,773 Posts
Joined Dec 2004
CaleoAug 18, 2025 10:37 PM
5,773 Posts

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

Quote from MagentaEducation252 :
I don't even spray it off. The condensation with use will rinse off naturally.
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?
1
1
Aug 18, 2025 10:39 PM
1,704 Posts
Joined Dec 2003
lifeatragedyAug 18, 2025 10:39 PM
1,704 Posts
Quote from batavoosh :
So this is the outside version, and the $40 version is for the inside?
The Frost King ACF19 Air Conditioner Coil Foaming Cleaner can be used indoors on the coils inside your house, such as the evaporator coils of a central AC unit or coils in a window air conditioning unit. The manufacturer states it is a no-rinse foaming cleaner designed for air conditioner coils, car radiators, lawnmower engines, refrigerator, and freezer coils, and more. The product uses a heavy-duty, detergent-based foam that can be sprayed in any position, thanks to its 360-degree valve.

Do some places really charge like $40 for this can elsewhere?
Aug 18, 2025 10:44 PM
226 Posts
Joined Aug 2003
SmoothCriminalAug 18, 2025 10:44 PM
226 Posts
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
2
Aug 18, 2025 10:45 PM
497 Posts
Joined Mar 2004
wyldtekAug 18, 2025 10:45 PM
497 Posts
Aug 18, 2025 11:29 PM
8 Posts
Joined Nov 2014
sunjkumarAug 18, 2025 11:29 PM
8 Posts
$4.54 on Amazon with prime shipping.

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Pro
Aug 18, 2025 11:29 PM
5,401 Posts
Joined Aug 2016
JenT4685
Pro
Aug 18, 2025 11:29 PM
5,401 Posts
Quote from Caleo :
If you've got AC unit (window, mini-split, or central air) that has gone a year or two (or more) without a good cleaning, get this and use it. You'll notice a difference, trust me. Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.1 can should be good for at least 2 or 3 cleanings of a window AC unit.
Sorry if this is a dumb question, but I'm confused as to where exactly id spray it on an outside central air unit.

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