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frontpagephoinix | Staff posted Mar 26, 2026 03:22 PM
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frontpagephoinix | Staff posted Mar 26, 2026 03:22 PM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$6.40

$16

60% off
Amazon
42 Comments 25,796 Views
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Deal Details
Update: This popular deal is still 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.

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 qwikwit | 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.

Original Post

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

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 qwikwit | 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.

Original Post

Written by phoinix | Staff

Community Voting

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Price Intelligence

Model: Coil Cleaner A/C 19Oz

Deal History 

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Sort: Lowest to Highest | Last Updated 4/1/2026, 02:21 AM
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Amazon$6.37

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Top Comments

WooHoo2You
9578 Posts
1867 Reputation
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.
obbitar
31 Posts
14 Reputation
ripper415
276 Posts
169 Reputation
Why on earth would you use bleach on an AC unit?!

42 Comments

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Mar 26, 2026 03:33 PM
1,010 Posts
Joined Jul 2014
KnowsItToBeTrueMar 26, 2026 03:33 PM
1,010 Posts

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Careful, idk about this one but some of these cleaners are corrosive and can do more damage than good.
2
Mar 26, 2026 03:38 PM
29 Posts
Joined Jun 2025
MagentaEducation252Mar 26, 2026 03:38 PM
29 Posts
Quote from KnowsItToBeTrue :
Careful, idk about this one but some of these cleaners are corrosive and can do more damage than good.

This one is quite reputable. I missed the other sale so this is perfect for spring prepping for the summer heat.
Mar 26, 2026 03:52 PM
8 Posts
Joined Jul 2022
CalmMoon3089Mar 26, 2026 03:52 PM
8 Posts
I've used this brand. Good stuff. This is an excellent price.
1
Mar 26, 2026 04:12 PM
9 Posts
Joined Dec 2025
GreenWalrus9117Mar 26, 2026 04:12 PM
9 Posts
Great price, i did a cleaning last year so im good for another 2 years or so. Anyone know the shelf life?
Mar 26, 2026 04:17 PM
386 Posts
Joined Nov 2006
BloodAnglMar 26, 2026 04:17 PM
386 Posts
Highly recommended. I use this twice a year on my RV ACs with excellent results. If I hadn't stocked up last deal I'd jump on this.
Mar 26, 2026 05:06 PM
21 Posts
Joined Nov 2007
jrm21086Mar 26, 2026 05:06 PM
21 Posts
Quote from KnowsItToBeTrue :
Careful, idk about this one but some of these cleaners are corrosive and can do more damage than good.
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.
3
3
Mar 26, 2026 05:08 PM
24 Posts
Joined Feb 2020
gswansterMar 26, 2026 05:08 PM
24 Posts
Thanks! in for one

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Mar 26, 2026 05:11 PM
4 Posts
Joined Sep 2025
ScarletLeopard494Mar 26, 2026 05:11 PM
4 Posts
Thanks. I ordered 3.
Mar 26, 2026 05:16 PM
879 Posts
Joined Oct 2011
allen_7Mar 26, 2026 05:16 PM
879 Posts
$6.05 with S&S for me, thanks.
Mar 26, 2026 05:51 PM
276 Posts
Joined Aug 2005
ripper415Mar 26, 2026 05:51 PM
276 Posts

Our community has rated this post as helpful. If you agree, why not thank ripper415

Quote from jrm21086 :
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.
Why on earth would you use bleach on an AC unit?!
1
1
Mar 26, 2026 05:58 PM
21 Posts
Joined Nov 2007
jrm21086Mar 26, 2026 05:58 PM
21 Posts
Quote from ripper415 :
Why on earth would you use bleach on an AC unit?!
It wasn't straight bleach, it was diluted, and it was to kill mold. But its also corrosive to metal. i never had an issue before but I also was cleaning older, likely better built units that didn't seem to mind.
Mar 26, 2026 06:03 PM
2,412 Posts
Joined Nov 2011
ImYoungxDMar 26, 2026 06:03 PM
2,412 Posts
This can be used on a dehumidifier?
Pro
Mar 26, 2026 06:04 PM
9,578 Posts
Joined Mar 2018
WooHoo2You
Pro
Mar 26, 2026 06:04 PM
9,578 Posts

Our community has rated this post as helpful. If you agree, why not thank WooHoo2You

Quote from MagentaEducation252 :

This one is quite reputable. I missed the other sale so this is perfect for spring prepping for the summer heat.
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.
Last edited by WooHoo2You March 27, 2026 at 07:54 AM.
4
1
Mar 26, 2026 06:04 PM
31 Posts
Joined Aug 2016
obbitarMar 26, 2026 06:04 PM
31 Posts

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

$6.37 at Walmart.com

https://www.walmart.com/ip/Frost-...nMQAvD_BwE
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Mar 26, 2026 06:26 PM
318 Posts
Joined Mar 2009
skerlegonMar 26, 2026 06:26 PM
318 Posts
Quote from ImYoungxD :
This can be used on a dehumidifier?
I use it on mine. No issues.

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