Walmart has
19-Oz Frost King Air Conditioner Coil Foaming Cleaner (ACF19) on sale for
$4.54.
Shipping is free with Walmart+ (
Free 30-Day Trial) or orders $35 or more. Otherwise, select store pickup where available.
- Note: Availability for pickup may vary by location.
Thanks to Community Member
JMCam for sharing this deal.
About this product:
- Heavy-duty foam easily and effectively removes dirt, grease and oil from air conditioner coils and car radiators.
- New low "VOC" formula, contains no CFCs, chlorinated or fluorinated solvents
- Special 360-degree valve allows spraying in any position
- Can also be used for car radiators, lawnmower engines, refrigerator and freezer coils, condenser and evaporator coils, metal filters, fan blades and more
- Cleaning coils increases efficiency and saves money
- The clinging foam is completely self-rinsing on condensate producing coils
- Citrus fragrance neutralizes odors
Top Comments
Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.
1 can should be good for at least 2 or 3 cleanings of a window AC unit.
https://www.amazon.com/SAFE-Foami...B007I7K
Have used in the past, usually just once a year, average outside unit will take between 2 and 3 cans
The evaporator is the indoor coil inside your air handler. This should be fairly clean if you change your air filter regularly, but they do occasionally develop mold if they don't dry out sufficiently (or it's a unit that runs continuously). Cleaning this will help with air quality and maybe efficiency. You're not going to hit this with a garden hose, but some people use a garden sprayer to rinse or even to spray cleaner (which you can buy as a concentrate instead of this can if you're going this route). These coils are also where you have condensation that can rinse the coil, so it's less import to rinse the cleaner. This cleaner is designed to not require rinsing per the manufacturer.
The condenser lives outside, so there is no filter and it's susceptible to dirt/pollen/leaves from the environment and tends to get much dirtier. There is no condensation here and a lot more dirt, so rinsing is more beneficial. It's also easier to get out your garden hose to do so.
This cleaner can be used for both evaporator and/or condenser coils. Not sure if it's approved for car use, but there are similar ones designed specifically for cars. Not sure what the difference would be though.
Community Reviews
Frost King ACF19 is a foaming coil cleaner for air conditioner evaporator and condenser coils, and it is valued for helping restore neglected units. The foam is easy to spray, can be used in any position, and the self-rinsing formula is meant to break down grime without much fuss. It works best when the coils are accessible and the unit is powered off, with some setups needing a hose rinse, extra flushing, or even partial disassembly for a real deep clean. It is a practical maintenance product, but it is not a magic shortcut for heavily caked coils.
Common Questions (5)
It is designed as a no-rinse cleaner, and condensation from normal AC operation can wash it away on evaporator or split units. Rinsing with water is optional, but it can help on dirtier coils or condenser units where there is no condensation to carry residue off.
For many central air units, removing the outer housing gives better access to the coils and lets you spray from both inside-out and outside-in. Without better access, surface foam alone may not flush out debris deep in the coil.
Turn off the power, shake the can well, spray the foam onto the coils while avoiding electrical components, then let it sit about 10-15 minutes. For dirty coils, a strong water spray or garden sprayer can flush out loosened debris, and multiple cycles may be needed on heavily caked buildup.
A window AC can often be cleaned 2-3 times with one can, while an average outside unit may take about 2-3 cans per cleaning. Some users buy extra because a heavily dirty unit or a full whole-house system can use more.
Yes. It is intended for indoor use on evaporator coils, including central air air handlers and window units, and the manufacturer says it can be sprayed in any position with its 360-degree valve.
AI-generated summary based on comments from the community. Updated ago
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49 Comments
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Edit: checked with Gemini and it doesn't recommend Frost King to clean evaporator coils on a Tesla. Kool-It has a lower PH and is gentler for that purpose.
No walmarts within 50miles of me has it either, shipping not available.
Bummer
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Tesla has a known issue where the cabin filter sits in condensation and stinks so you have to do this regularly. But you can access the coils relatively easily.
The evaporator is the indoor coil inside your air handler. This should be fairly clean if you change your air filter regularly, but they do occasionally develop mold if they don't dry out sufficiently (or it's a unit that runs continuously). Cleaning this will help with air quality and maybe efficiency. You're not going to hit this with a garden hose, but some people use a garden sprayer to rinse or even to spray cleaner (which you can buy as a concentrate instead of this can if you're going this route). These coils are also where you have condensation that can rinse the coil, so it's less import to rinse the cleaner. This cleaner is designed to not require rinsing per the manufacturer.
The condenser lives outside, so there is no filter and it's susceptible to dirt/pollen/leaves from the environment and tends to get much dirtier. There is no condensation here and a lot more dirt, so rinsing is more beneficial. It's also easier to get out your garden hose to do so.
This cleaner can be used for both evaporator and/or condenser coils. Not sure if it's approved for car use, but there are similar ones designed specifically for cars. Not sure what the difference would be though.
Spray it on, wait 10-15m for it to do its thing, then use a fairly strong setting on your garden sprayer to blast & flush the debris out (but not so strong as to bend the fins). You might need to do multiple cycles of this if you've got some thick debris caking going on. Try to get a look at the inside of the fins (where the fan is) - the bottom's usually the worst part because that's where water usually splashes up to help cooling.
1 can should be good for at least 2 or 3 cleanings of a window AC unit.
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Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!