Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Missed This Deal? Get alerts when similar deals are posted.
expired
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
Visit Walmart

Why are you downvoting this deal?

Good Deal?
72Comments
Save
Share
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

Community Voting

Deal Score
+224
Good Deal
Bad Deal

Why are you downvoting this deal?

Price Intelligence

Deal History

Sale Price
Slickdeal
  • $NaN
  • Today

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)

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

72 Comments

Sign up for a Slickdeals account to remove this ad.

Apr 2, 2026 1:49 AM
362 Comments
Joined Jul 2025
LavenderWren3996Apr 2, 2026 1:49 AM
362 Comments
Quote from MagentaEducation252 View quoted comment :
This one is quite reputable. I missed the other sale so this is perfect for spring prepping for the summer heat.
Agreed used it on the same unit for over 20 years still going strong
Apr 2, 2026 3:29 AM
659 Comments
Joined Nov 2025
TenseScent5337Apr 2, 2026 3:29 AM
659 Comments
Quote from debenbrie View quoted comment :
I cleaned mine with it. It did a good job.
spray and hose off my outside coil unit? Any precautions?
Apr 2, 2026 12:25 PM
1.5K Comments
Joined Sep 2008
BaudLordApr 2, 2026 12:25 PM
1.5K Comments
Quote from TenseScent5337 View quoted comment :
spray and hose off my outside coil unit? Any precautions?
Turn power off to the unit, breaker or by pulling the disconnect. It's best to rinse from inside to outside, so remove the top fan for access. Honestly for outdoor coils, just rinsing with water is fine. Use a garden hose. Don't forcibly spray with like a nozzle as it can bend fins. Just let the open hose rinse it out.
Apr 2, 2026 1:25 PM
328 Comments
Joined Jun 2013
Paul33570Apr 2, 2026 1:25 PM
328 Comments
[thank you picked two up!


QUOTE=phoinix;183284040]Amazon [amazon.com] has 19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner for $6.37.
Shipping is free with Prime or on $35+ orders.

Price
$9.73 lower (60% savings) than the list price of $16.10
$2.14 lower (25% savings) than the previous price of $8.51

Subscribe & Save
0%: $6.37
5%: $6.05
Add to next delivery [amazon.com] (with free shipping)
fillers [amazon.com]

Customer reviews
4.6⭐ / 17,069
4,000+ bought in past month

amazon.com/dp/B007I7KZN0 [amazon.com]

Please report the deal if expired
My other deals[/QUOTE]
Apr 2, 2026 2:34 PM
80 Comments
Joined Nov 2005
ninjaslipperApr 2, 2026 2:34 PM
80 Comments
It's dead for me @ Amazon, but Walmart still has it for $6.37.
Apr 2, 2026 3:34 PM
885 Comments
Joined Apr 2008
c3688tApr 2, 2026 3:34 PM
885 Comments
So many thumbs up. Good post
Apr 3, 2026 1:22 PM
44 Comments
Joined Feb 2026
FeistyGame5623Apr 3, 2026 1:22 PM
44 Comments
Wouldn't 10 minutes of my time and using a garden hose to wash the coils do the same thing?
1
1

Sign up for a Slickdeals account to remove this ad.

Apr 4, 2026 11:55 AM
3.5K Comments
Joined Jun 2014
EdEd1190Apr 4, 2026 11:55 AM
3.5K Comments
Dead on Amazon and Walmart.
Pro
Deal Editor
Apr 9, 2026 10:23 PM
13.6K Comments
Joined Jun 2008
Nate650
Pro
Deal Editor
Apr 9, 2026 10:23 PM
13.6K Comments
Deal is still active.
Apr 9, 2026 10:55 PM
15.2K Comments
Joined Aug 2005
LiquidRetroApr 9, 2026 10:55 PM
15.2K Comments
Perfect timing I was going to go to Home Depot and pickup coil cleaner to clean the Ac this weekend.
Apr 9, 2026 11:21 PM
76 Comments
Joined Dec 2007
spjeff69Apr 9, 2026 11:21 PM
76 Comments
Wear PPE
Apr 9, 2026 11:58 PM
826 Comments
Joined Dec 2012
fsu67Apr 9, 2026 11:58 PM
826 Comments
A few cents cheaper at Wally World
Apr 10, 2026 12:15 AM
105 Comments
Joined May 2016
ViveLeroiApr 10, 2026 12:15 AM
105 Comments
Looks dead now
Apr 10, 2026 12:36 AM
6.8K Comments
Joined Dec 2004
CaleoApr 10, 2026 12:36 AM
6.8K 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?
These really help loosen up caked on debris beyond what you can do with just a hose.
Hard disagree with the manufacturer's "no rinse necessary" claim, though... you'll want to blast your coils with a hose nozzle pretty good to get any of the more caked on debris dislodged - otherwise, you're not getting a proper clean.

I finally did my ~2.5 yr old Midea 12K unit in the middle of last summer and it made a pretty significant difference in how hard the unit had to run - we're talking a ~25% reduction in power consumption. It didn't look bad (it's kind of hard to see the problem areas), but it was, and it took a decent amount of direct spraying with one of the more aggressive spray patterns. Just be careful not to go so hard on it that you're bending fins.

Sign up for a Slickdeals account to remove this ad.

Apr 10, 2026 12:40 AM
640 Comments
Joined Aug 2012
LetsDoSlickApr 10, 2026 12:40 AM
640 Comments
Deal dead

Edit: should have been clearer. Deal still there at Walmart but has $6.99 shipping. Dead at Amazon.
Last edited by LetsDoSlick April 9, 2026 at 05:45 PM.
1

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!