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phoinix | Staff 54.8K 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 | Staff
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 | Staff

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Top Comments

Community Reviews

This foaming coil cleaner is valued as an easy way to clear caked on grime from AC coils, mini splits, RV units, and even heater cores, with reports that it improves appearance, cooling, and sometimes lowers power use. The formula is described as lemony fresh and less harsh than bleach based cleaning, while still loosening debris that a hose alone may miss. The main cautions are that it may take two cans for a larger unit, and the bottle does not appear to include a tube for tight spaces. A practical pick for routine coil maintenance when access and coverage matter.

  • spring prepping homeowners who want to clean their AC coils before summer heat because commenters said it's "perfect for spring prepping for the summer heat" and they used it for that timing with good results.

  • RV owners cleaning their air conditioner coils twice a year because one commenter said they use it twice a year on their RV ACs with excellent results.

  • people with mini splits who want a foaming coil cleaner for regular maintenance because a commenter said they use it on their mini splits and even suggested adding one of the tabs monthly during summer.

  • homeowners trying to avoid bleach-based corrosion on thin AC fins because commenters reported bleach/degreaser corroding fins and damaging motor bearings/fans, while this spray was easier to use and "kills organisms without using bleach."

  • owners who need a foaming detergent/deodorizer approach (not a caustic HVAC-wholesale cleaner) because commenters warned many corrosive coil cleaners are contractor-grade and hazardous if misused, while this one is described as more of a foaming detergent/deodorizer.

  • drivers cleaning vehicle heater cores with a reach tube because one commenter said they attach a plastic tube and it "clean[s] the living F out of them," making a huge difference on hard-to-remove buildup.

  • people with dusty outdoor units who want to keep performance up during nonstop summer use because a commenter said they run their units nonstop and want to keep coils clean to boost performance and avoid overworking, especially with dust exposure near a gravel pit.

  • homeowners cleaning evaporator coils where the intake side cakes up because commenters said the intake side is what cakes up even when the visible side looks clean, so a foaming coil cleaner can help you address that hidden buildup.

  • car owners trying to clean a car air conditioner because commenters said it doesn't come with a tube for hard-to-reach areas, making it unsuitable for their cars air conditioner.

  • people expecting a "no rinse necessary" product because one commenter disagreed with the manufacturer's claim and said you should rinse/blast coils with a hose nozzle to dislodge more caked-on debris.

  • buyers who need a one-can solution for a larger home or decent-sized unit because commenters said you may need two cans for thorough cleaning.

  • people who want to use it as a straight, highly caustic cleaner without dilution because commenters warned it can be corrosive to metal and that many corrosive coil cleaners require dilution and heavy rising.

  • buyers who are relying on the exact Amazon deal price because commenters said the deal was dead on Amazon (with a higher price like $11.35), so the value may not match what you expect.

Common Questions (5)

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72 Comments

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Mar 28, 2026 1:54 PM
882 Comments
Joined Apr 2006
davesgirlMar 28, 2026 1:54 PM
882 Comments
Thanks! The Spring to do list gets longer.
Mar 28, 2026 5:15 PM
9 Comments
Joined Sep 2017
JerryC2800Mar 28, 2026 5:15 PM
9 Comments
out of stock
Mar 28, 2026 5:40 PM
307 Comments
Joined Jul 2009
flames9Mar 28, 2026 5:40 PM
307 Comments
cheaper at amazon at $6.37 a can
1
Mar 28, 2026 11:45 PM
548 Comments
Joined Nov 2018
porksmugglersMar 28, 2026 11:45 PM
548 Comments
Quote from Luigis3rdcousin View quoted comment :
I used this in 2024 and our AC hadn't ever gotten cleaned in 20 years and it wasn't that dirty. So I'll pause this time. I guess depends where your AC is and how dirty it gets so fast
Most homeowners, and lazy techs look at the wrong side of the evap coil, the intake is what cakes up, even with proper filtration, while the visible side always looks clean. The most common foaming brand used in industry is Nu-Calgon. I buy Purafilter 2000 by the gallon, requires dilution, safe on evap and condensers. Make sure you're checking both sides of each.
Last edited by porksmugglers March 28, 2026 at 04:49 PM.
Mar 30, 2026 2:16 PM
60 Comments
Joined Apr 2021
SensibleString1707Mar 30, 2026 2:16 PM
60 Comments
Do these have good shelf life and is it a good idea to stock up on?
Mar 31, 2026 1:39 PM
103 Comments
Joined Feb 2021
Michelle_my_belleMar 31, 2026 1:39 PM
103 Comments
to note, it does not come with a tube for hard to reach areas. not suitable for my cars airconditioner.
Mar 31, 2026 5:04 PM
653 Comments
Joined Mar 2010
ConsumerAdvoCatMar 31, 2026 5:04 PM
653 Comments
Can it restore refrigerator coils to like-new? Where will all of the grimey dust go?

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Mar 31, 2026 5:28 PM
274 Comments
Joined Jul 2018
milkmee6Mar 31, 2026 5:28 PM
274 Comments
Same price on Amazon
Deal Editor
Apr 1, 2026 8:41 PM
23.7K Comments
Joined Aug 2014
qwikwit
Deal Editor
Apr 1, 2026 8:41 PM
23.7K Comments
This deal is still available.
Apr 1, 2026 8:46 PM
6.1K Comments
Joined Mar 2006
Core2QuadApr 1, 2026 8:46 PM
6.1K Comments
Quote from WildflowerGuru View quoted comment :
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.
Can you describe your process more?
Apr 1, 2026 9:01 PM
2.3K Comments
Joined Feb 2010
MR_FLY_GUYApr 1, 2026 9:01 PM
2.3K Comments
Quote from KnowsItToBeTrue View quoted comment :
Careful, idk about this one but some of these cleaners are corrosive and can do more damage than good.
This is is great. No issues. But you will need 2 if you have a decent sized unit/house.
Apr 1, 2026 9:03 PM
2.3K Comments
Joined Feb 2010
MR_FLY_GUYApr 1, 2026 9:03 PM
2.3K Comments
Quote from ConsumerAdvoCat View quoted comment :
Can it restore refrigerator coils to like-new? Where will all of the grimey dust go?
New no. 10x better yes. The debris and grime or the like will be rinse off in to the center part and drain. This works great for cleaning appearance and cooling. I will need 2 to be thorough tho
Apr 1, 2026 11:52 PM
490 Comments
Joined Jul 2008
PauseAndConnectApr 1, 2026 11:52 PM
490 Comments
Thanks OP
Apr 2, 2026 12:36 AM
744 Comments
Joined Jun 2013
Nerd_Baller1Apr 2, 2026 12:36 AM
744 Comments
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

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Apr 2, 2026 12:50 AM
1.1K Comments
Joined Nov 2008
hydrocynusApr 2, 2026 12:50 AM
1.1K Comments
Ordered 10. Thanks. Max is 3 With amazon.

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