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phoinix 55.5K Views
Mar 26, 2026 3:22 PM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$6.40

$16

60% off
Walmart
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Deal Details
Update: This popular deal is still available.

Walmart has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter phonix for sharing this deal.
  • Note: Availability for purchase may vary by location.
About this product:
  • Heavy-duty foam dissolves stains, removes grease & oil, and loosens dirt
  • Cleans coils, fan blades, and reusable air filters
  • Neutralizes odors from standing water in drain pans
  • Air conditioner coil foaming heavy duty detergent cleaner with low VOC formula
  • Pleasant lemon fragrance leaves deodorized, fresh smell after cleaning
  • No rinse necessary

Editor's Notes

Written by Nate650 | Staff
  • About this Store:
  • Additional Information:
    • Rated 4.6 out of 5 stars on Amazon based on over 17k customer reviews.
    • Our research indicates that this deal is $3.62 less (36% savings) than the next best available price from a reputable merchant with prices starting from $9.99 at the time of this post.
    • 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:
    • Amazon has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free w/ Prime or on $35+ orders.

Original Post

Written by phoinix
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Update: This popular deal is still available.

Walmart has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter phonix for sharing this deal.
  • Note: Availability for purchase may vary by location.
About this product:
  • Heavy-duty foam dissolves stains, removes grease & oil, and loosens dirt
  • Cleans coils, fan blades, and reusable air filters
  • Neutralizes odors from standing water in drain pans
  • Air conditioner coil foaming heavy duty detergent cleaner with low VOC formula
  • Pleasant lemon fragrance leaves deodorized, fresh smell after cleaning
  • No rinse necessary

Editor's Notes

Written by Nate650 | Staff
  • About this Store:
  • Additional Information:
    • Rated 4.6 out of 5 stars on Amazon based on over 17k customer reviews.
    • Our research indicates that this deal is $3.62 less (36% savings) than the next best available price from a reputable merchant with prices starting from $9.99 at the time of this post.
    • 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:
    • Amazon has 19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for $6.37. Shipping is free w/ Prime or on $35+ orders.

Original Post

Written by phoinix

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Top Comments

jrm21086
26Comments
18Reputation
So not doubting this to be true, but I had inherited a 2/3 year old Hisense unit from my home's previous owners. Was in great shape. I'm obsessed with moldy ACs and always clean them really well. I did my usual trick of degreaser to clean and bleach water to sanitize. Not only did the bleach start to corrode some of the fins but I think I got degreaser in the motor bearings and the fan ran like s***. Had to throw it away. On my new units I used this spray. Not only is it easy to use, it's lemony fresh and did a much better job at cleaning. It also kills organisms without using bleach which is very harmful to the cheap thin metal that all AC units use for the fins.
Go to Comment
WooHoo2You
11KComments
2KReputation
It isn't so much being "reputable" but use case. Most of the corrosive coil cleaners are contractor grade, meant to be used exclusively on certain types of condensing units / condensing coils / cooling towers (never on evaporator coils), require dilution, and heavy rising. They can be very hazardous in the hands of those who claim to 'know enough to be dangerous' (and generally are...but not in a good way).

This on the other hand is more of a foaming detergent / deodorizer vs a rather caustic 'cleaner' you likely find at an HVAC wholesaler.
Go to Comment
WildflowerGuru
3.9KComments
1KReputation
I use this with a plastic tube attached to reach vehicle heater cores. Clean the living F out of them. Heater cores get loaded with hard to remove accumilated substances. Makes a huge difference.
Go to Comment

Community Reviews

This foaming AC coil cleaner is valued for loosening caked-on dirt, improving coil appearance, and helping units cool and run more efficiently. It is also used on mini splits, RV ACs, vehicle heater cores, and older units, with reports of easy application and a fresh lemon scent. The main cautions are that some coil cleaners can be corrosive, this can still need a rinse for stubborn buildup, and larger units may take two cans. It is a practical cleaner for hard-to-reach coils when used carefully.

  • Homeowners prepping a neglected AC for summer, because the foam loosens caked-on debris and can improve cooling and lower power use.

    MagentaEducation252CaleoMR_FLY_GUY

  • People wanting a safer alternative to harsh bleach-based cleaners, because it cleans without bleach and avoids the corrosion risk of caustic products.

    jrm21086WooHoo2Youjrm21086

  • RV and mini-split owners cleaning coils regularly, because it has worked well on those units and can be used twice a year or monthly in summer.

    BloodAnglpcrh

  • DIYers cleaning hard-to-reach evaporator or heater-core coils, because the foam reaches tight spaces and removes stubborn buildup.

    WildflowerGurusakaria

  • Users of older or delicate metal coils, because corrosive cleaners can damage fins and other thin metal parts.

    KnowsItToBeTruejrm21086jrm21086

  • Car owners needing a built-in applicator tube, because this cleaner does not include one for reaching tight automotive vents.

    Michelle_my_belledsc888

  • Owners of large home units expecting one can to do a full cleaning, because a decent-sized system may need two cans for thorough coverage.

    MR_FLY_GUYMR_FLY_GUY

  • People who want a no-rinse cleanup, because the foam still needs a hose rinse to dislodge caked-on debris properly.

    CaleoBig Rad

Common Questions (4)

AI-generated summary based on comments from the community. Updated ago

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72 Comments

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Apr 10, 2026 12:45 AM
180 Comments
Joined May 2015
christiano5vApr 10, 2026 12:45 AM
180 Comments
Great deal
Apr 10, 2026 12:46 AM
1.2K Comments
Joined Feb 2017
Look4deals2020Apr 10, 2026 12:46 AM
1.2K Comments
2 left at Wally Wall. In my cart delivery tomorrow. Thanks!
Apr 10, 2026 12:49 AM
170 Comments
Joined Dec 2014
dsc888Apr 10, 2026 12:49 AM
170 Comments
Quote from Nerd_Baller1 View quoted comment :
Attention Tesla owners lol. This is what you use to get rid of that awful dirty sock smell after AC runs on older ish vehicles
It doesn't appear to come with a tube. Do you simply spray in the opening after you take out the cabin air filters?
Apr 10, 2026 1:32 AM
714 Comments
Joined Apr 2014
daakrolbApr 10, 2026 1:32 AM
714 Comments
Dead. Now showing $16 for me
Apr 10, 2026 1:43 AM
118 Comments
Joined Nov 2008
sakariaApr 10, 2026 1:43 AM
118 Comments
Quote from FeistyGame5623 View quoted comment :
Wouldn't 10 minutes of my time and using a garden hose to wash the coils do the same thing?
Yes, you can hose off your home A/C condenser coil and even use dish detergent or any other liquid soap or cleanser on the outside unit. It's best to spray from the inside of the unit to dislodge leaves, grass, and debris which are mostly on the outer fins. These coil cleaners are most useful for refrigerator condenser coils, HVAC evaporator, and other areas where it's not practical to hose it down or where you might have embedded dirt or sticky grease and grime.
Apr 10, 2026 1:50 AM
745 Comments
Joined Jun 2013
Nerd_Baller1Apr 10, 2026 1:50 AM
745 Comments
Quote from dsc888 View quoted comment :
It doesn't appear to come with a tube. Do you simply spray in the opening after you take out the cabin air filters?
You can get an introducer straw very cheap
Apr 10, 2026 2:08 AM
30 Comments
Joined Sep 2013
angryhulk1Apr 10, 2026 2:08 AM
30 Comments
OOS on walmart. Amazon price is $16

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Apr 10, 2026 4:11 AM
29 Comments
Joined Nov 2019
BeautifulSeagull986Apr 10, 2026 4:11 AM
29 Comments
16$ for me... Not 7 Frown
Apr 10, 2026 12:19 PM
635 Comments
Joined Mar 2011
stuukeApr 10, 2026 12:19 PM
635 Comments
In for 2
Apr 10, 2026 2:40 PM
923 Comments
Joined Dec 2007
Big RadApr 10, 2026 2:40 PM
923 Comments
get this and save yourself $100 cleaning. I do hose off the unit after foam sits for a while.
Apr 10, 2026 9:07 PM
486 Comments
Joined Jun 2006
thesandmanApr 10, 2026 9:07 PM
486 Comments
I had read on a HVAC pro forum that many of them use dilute simple green in a sprayer to clean the coils safely and effectively for a fraction of the cost. I'm not pro myself so only have experience on my own condenser coil, but it seemed to work fine
Apr 11, 2026 4:05 AM
2.2K Comments
Joined May 2004
ECarlsonApr 11, 2026 4:05 AM
2.2K Comments
I could use some of this. I hope more comes in stock.

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