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frontpagephoinix | Staff posted Today 1:03 AM

19-Oz Frost King ACF19 Air Conditioner Coil Foaming Cleaner

$6.35

$16

60% off
Amazon
8.2K Views
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Deal Details
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 with Walmart+ (30-day trial for $1) or orders $35 or more. Otherwise, select store pickup where available.

Thanks to Deal Hunter phoinix for sharing this deal.

About this product:
  • Foam cleans coils fan blades and reusable air filters
  • Heavy-duty detergent dissolves stains grease oil and loosens dirt
  • Neutralizes odors from standing water in drain pans
  • Low VOC formula with pleasant lemon fragrance leaves fresh smell
  • No rinse necessary for cleaning AC units

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.
  • Additional Information:
    • This offer matches our very popular front page deal from June 2026 which earned 70 thumbs up.
    • 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 Notes
About the Poster
Deal Details
Community Notes
About the Poster
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 with Walmart+ (30-day trial for $1) or orders $35 or more. Otherwise, select store pickup where available.

Thanks to Deal Hunter phoinix for sharing this deal.

About this product:
  • Foam cleans coils fan blades and reusable air filters
  • Heavy-duty detergent dissolves stains grease oil and loosens dirt
  • Neutralizes odors from standing water in drain pans
  • Low VOC formula with pleasant lemon fragrance leaves fresh smell
  • No rinse necessary for cleaning AC units

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.
  • Additional Information:
    • This offer matches our very popular front page deal from June 2026 which earned 70 thumbs up.
    • 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

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15 Comments

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Today 4:55 AM
43 Comments
Joined Nov 2014
pekidToday 4:55 AM
43 Comments
Can you use this in car?
Today 5:00 AM
1.4K Comments
Joined Sep 2010
dkd711Today 5:00 AM
1.4K Comments
Quote from pekid :
Can you use this in car?
Yes, and many other things you need to clean
Today 6:00 AM
1.3K Comments
Joined Sep 2017
slickdealgbToday 6:00 AM
1.3K Comments
I have to wash my HVAC condenser?
2
Today 6:05 AM
30.3K Comments
Joined Oct 2010
Medic311Today 6:05 AM
30.3K Comments
"No rinse necessary for cleaning AC units"

Note: this is referring to cleaning evaporator coils which produce condensate (water) and thus basically wash the product off the coils while the unit is running which then drains out the condensate drain line

If you are using this on condenser coils, after applying the cleaner and letting it dissolve the build up on the coils per the instructions, then you should get a hose sprayer on a gentle spray setting and wash the coils down.
1
Today 6:25 AM
1.3K Comments
Joined Sep 2017
slickdealgbToday 6:25 AM
1.3K Comments
Quote from slickdealgb :
I have to wash my HVAC condenser?
New project incoming!
Last edited by slickdealgb August 29, 2026 at 11:43 PM.
Today 6:25 AM
30.3K Comments
Joined Oct 2010
Medic311Today 6:25 AM
30.3K Comments

Our community has rated this post as helpful. If you agree, why not thank Medic311

Quote from slickdealgb :
I have to wash my HVAC condenser?
yes. in most cases if you wash it regularly though you won't need a cleaner really. you can get it cleaned enough (ie washing off grass clippings, those little weed fuzzies, possibly dryer lint if the condenser unit was improperly installed near a dryer vent, and just other dirt/debris).

a lot of HVAC companies will try and upsell cleaning services using acidic cleaners but in most cases it's completely unnecessary and can even cause damage to the coils. i'll use my neighbor's story as an example of his house at the shore:

an HVAC company recommended a condenser cleaning to my neighbor for his old 1990's system b/c they told him that the dark black coating on the fins is years of dirt build up and it's preventing the unit from running efficiency. they said they can clean it with an acidic cleaner. so they did a treatment and it wasn't working well, so they did another one, and another one. so 3 acidic cleaning treatments which is automatically a big no-no. they removed most of the dark coating on the fins and claimed job well done.

turns out, the dark coating was an extra anti-corrosion coating that the manufacturer used back in the 90's for condenser models designed for use in salty-air environments (ie like the shore). today, manufacturers usually use blue, clear, or sometimes brown/gold. so the tech was uneducated on working on older equipment, and ended up stripping off the anti corrosion coating. the coils then started rusting, and it sprung multiple leaks in the coils in 3 1/2 yrs. the unit lost all of the R22 refrigerant and due to the number of pits, it was beyond repair and he had to replace the entire condenser.
2
Today 6:36 AM
1.3K Comments
Joined Sep 2017
slickdealgbToday 6:36 AM
1.3K Comments
Quote from Medic311 :
yes. in most cases if you wash it regularly though you won't need a cleaner really. you can get it cleaned enough (ie washing off grass clippings, those little weed fuzzies, possibly dryer lint if the condenser unit was improperly installed near a dryer vent, and just other dirt/debris). a lot of HVAC companies will try and upsell cleaning services using acidic cleaners but in most cases it's completely unnecessary and can even cause damage to the coils. i'll use my neighbor's story as an example of his house at the shore: an HVAC company recommended a condenser cleaning to my neighbor for his old 1990's system b/c they told him that the dark black coating on the fins is years of dirt build up and it's preventing the unit from running efficiency. they said they can clean it with an acidic cleaner. so they did a treatment and it wasn't working well, so they did another one, and another one. so 3 acidic cleaning treatments which is automatically a big no-no. they removed most of the dark coating on the fins and claimed job well done.turns out, the dark coating was an extra anti-corrosion coating that the manufacturer used back in the 90's for condenser models designed for use in salty-air environments (ie like the shore). today, manufacturers usually use blue, clear, or sometimes brown/gold. so the tech was uneducated on working on older equipment, and ended up stripping off the anti corrosion coating. the coils then started rusting, and it sprung multiple leaks in the coils in 3 1/2 yrs. the unit lost all of the R22 refrigerant and due to the number of pits, it was beyond repair and he had to replace the entire condenser.
Repped! Thanks for the info.

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Today 6:59 AM
81 Comments
Joined May 2016
vampyre614Today 6:59 AM
81 Comments
Quote from pekid :
Can you use this in car?
The primary use for this is to clean evaporator coils on a home HVAC. In a car, the evaporator sits in a box buried in your dash. There's no way this product can reach an automotive evaporator. It may deodorize ducts but there are better and cheaper products for that.
Today 8:44 AM
2.5K Comments
Joined May 2020
IncompletePerfectToday 8:44 AM
2.5K Comments

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

This is what it always sells for.
1
Today 9:27 AM
288 Comments
Joined May 2021
Sabretooth01Today 9:27 AM
288 Comments
Quote from Medic311 :
"No rinse necessary for cleaning AC units"Note: this is referring to cleaning evaporator coils which produce condensate (water) and thus basically wash the product off the coils while the unit is running which then drains out the condensate drain line If you are using this on condenser coils, after applying the cleaner and letting it dissolve the build up on the coils per the instructions, then you should get a hose sprayer on a gentle spray setting and wash the coils down.
Extra emphasis on the "Gently" part the fins are damaged easily which will cause you 😢
Today 11:57 AM
1.2K Comments
Joined Nov 2004
tfelladToday 11:57 AM
1.2K Comments
Grabbed mine from Walmart. I usually get a can on sale to use in the spring. I clean from the inside out.
Today 12:36 PM
76 Comments
Joined Jun 2022
t_w_Today 12:36 PM
76 Comments
I use the cleaner on my campers A/C units it works. I bought this product on Amazon twice the first time 3/5/2025 the cost was $11.00 even. Then last month 6/7/2026 and the cost was $6.37.
Today 2:02 PM
92 Comments
Joined Nov 2020
FeistyChicken532Today 2:02 PM
92 Comments
I use this annually. It does a great job of cleaning my condenser coils
Today 2:42 PM
214 Comments
Joined Nov 2009
tlmkrToday 2:42 PM
214 Comments
Anyone that has a Menards nearby can purchase a/c safe air-conditioner coil foaming cleaner for the everyday low price $6.37. After 11% rebate is $5.67

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Pro
Today 2:58 PM
10.4K Comments
Joined Jul 2007
jplee3
Pro
Today 2:58 PM
10.4K Comments
Quote from Medic311 :
yes. in most cases if you wash it regularly though you won't need a cleaner really. you can get it cleaned enough (ie washing off grass clippings, those little weed fuzzies, possibly dryer lint if the condenser unit was improperly installed near a dryer vent, and just other dirt/debris). a lot of HVAC companies will try and upsell cleaning services using acidic cleaners but in most cases it's completely unnecessary and can even cause damage to the coils. i'll use my neighbor's story as an example of his house at the shore: an HVAC company recommended a condenser cleaning to my neighbor for his old 1990's system b/c they told him that the dark black coating on the fins is years of dirt build up and it's preventing the unit from running efficiency. they said they can clean it with an acidic cleaner. so they did a treatment and it wasn't working well, so they did another one, and another one. so 3 acidic cleaning treatments which is automatically a big no-no. they removed most of the dark coating on the fins and claimed job well done.turns out, the dark coating was an extra anti-corrosion coating that the manufacturer used back in the 90's for condenser models designed for use in salty-air environments (ie like the shore). today, manufacturers usually use blue, clear, or sometimes brown/gold. so the tech was uneducated on working on older equipment, and ended up stripping off the anti corrosion coating. the coils then started rusting, and it sprung multiple leaks in the coils in 3 1/2 yrs. the unit lost all of the R22 refrigerant and due to the number of pits, it was beyond repair and he had to replace the entire condenser.
Thats awful - did they complain? That sounds like a potential lawsuit, actually...

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