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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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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 26, 2026 6:28 PM
282 Comments
Joined Jul 2005
SplashMar 26, 2026 6:28 PM
282 Comments
nice - used this for my model 3.
Mar 26, 2026 7:15 PM
3.9K Comments
Joined May 2015
WildflowerGuruMar 26, 2026 7:15 PM
3.9K Comments

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

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.
4
Mar 26, 2026 9:42 PM
6.3K Comments
Joined Jul 2017
Luigis3rdcousinMar 26, 2026 9:42 PM
6.3K Comments
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
Mar 26, 2026 11:35 PM
46 Comments
Joined Apr 2018
TT_VertMar 26, 2026 11:35 PM
46 Comments
Quote from BloodAngl View quoted comment :
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.
Does your condenser really get that dirty? I use it once every 2 or 3 years and mine still looks pretty good after that.
Mar 27, 2026 12:05 AM
396 Comments
Joined Nov 2006
BloodAnglMar 27, 2026 12:05 AM
396 Comments
Quote from TT_Vert View quoted comment :
Does your condenser really get that dirty? I use it once every 2 or 3 years and mine still looks pretty good after that.
Yeah, it's not filthy, but they need the cleaning and performance is boosted afterwards. We run those two beasts nonstop through the summer, so I want to try and keep them clean to avoid any overworking. One location is across from a gravel pit so get a lot of dust in the air, as well. If it was clean-ish, I absolutely would not be climbing up there any more than necessary. Smilie
Mar 27, 2026 2:46 AM
62 Comments
Joined Nov 2019
UniqueMorning5442Mar 27, 2026 2:46 AM
62 Comments
I've used this before and it's OK but the deal seems to be gone. It's $11.35 on my Amazon Frown
Mar 27, 2026 2:50 AM
298 Comments
Joined Mar 2008
sdineenMar 27, 2026 2:50 AM
298 Comments
dead dead dead
1

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Mar 27, 2026 12:32 PM
33 Comments
Joined Jul 2025
MellowRecess554Mar 27, 2026 12:32 PM
33 Comments
Still $6.37 for me.
Mar 27, 2026 8:08 PM
338 Comments
Joined Aug 2017
PoppmaticMar 27, 2026 8:08 PM
338 Comments
Should people use this for their fridge condensers?
Mar 28, 2026 1:56 AM
108 Comments
Joined Jul 2010
debenbrieMar 28, 2026 1:56 AM
108 Comments
Quote from skerlegon View quoted comment :
I use it on mine. No issues.
I cleaned mine with it. It did a good job.
Mar 28, 2026 5:51 AM
262 Comments
Joined Dec 2020
MarloStanfieldMar 28, 2026 5:51 AM
262 Comments
Out of stock
Mar 28, 2026 11:22 AM
23 Comments
Joined Mar 2014
JimJ4348Mar 28, 2026 11:22 AM
23 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.
Seafoam is good
Mar 28, 2026 12:43 PM
367 Comments
Joined Jul 2016
pcrhMar 28, 2026 12:43 PM
367 Comments
Quote from JimJ4348 View quoted comment :
Seafoam is good
I use this on my mini splits

https://a.co/d/0do5NSOC


Also add one of these tabs a month in summer
https://a.co/d/01sjuDvG
Mar 28, 2026 12:55 PM
187 Comments
Joined May 2018
GreyRiver608Mar 28, 2026 12:55 PM
187 Comments
Perfect timing, summer is around the corner n AC is about to come out

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Mar 28, 2026 1:17 PM
111 Comments
Joined Feb 2018
KeithS1445Mar 28, 2026 1:17 PM
111 Comments
use this at least once a year

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