The coils in an air conditioner can get very dirty, so it is important to clean them regularly. There are a few different ways to clean coils, but the best way is to use a coil cleaning solution. This type of solution is specifically designed to clean coils and will not damage them.
17 Best Cleaner For Ac Coils
1. Frost King ACF19 Air Conditioner Coil Cleaner, 19 oz
Easily removes dirt, grease and oil
Net Weight:19 Oz(539g )
Warning: Eye Irritant, Contents under pressure
Cleans evaporator and condensor coils, fan blades, and reusable air filters by air conditioner safe
Frost King ACF19 Foam Coil Cleaner, 19oz heavy-duty, water-based foam detergent coil cleaner is in a convenient aerosol can with a special 360 valve and scrub top lid. It can be used on most coils such as window air conditioners, central HVAC units, auto radiators, condenser and evaporator coils, metal filters, fan blades and more.
This product can be sprayed in any position while the blasting stream easily reaches into tight areas. The aggressive detergent quickly and easily liquefies dirt, grease, oil or other residue and deposits.
Fortified with corrosion inhibitors to prevent metal degradation. It will not harm drain pans, plastic or other materials in and around the area. The clinging foam is completely self-rinsing on condensate producing coils.
Simply spray on and condensation generated will wash away the material. The pleasant citrus fragrance helps leave the area smell cleaned and deodorized. New low VOC formula contains no CFCs, chlorinated or fluorinated solvents.
An ideal product to have in your tool collection. Directions: Turn off or disconnect power to unit being serviced. Shake well. Remove cap and point toward surface to be cleaned. Avoid spraying on electrical wires or connections.
Thoroughly saturate the targeted area with product. With this self-rinsing formula, the foam will break and condensation accumulation will completely rinse the emulsified material. Scrubbing cap is great for removing large, embedded pieces of debris.
You may wipe clean or rinse with water if desired or if using on non-condensation producing coils. For extremely stubborn or heavy deposits, repeat application may be necessary. Turn on or return power to unit.
This is an absolute must if you use window a/c units! Just spray it on the front coils, let it soak in, and then get you a spray bottle with warm water, and watch that nasty dirt float right out the back! Cleans the entire a/c unit.
Will clean the front coils, cleans out the flow hole that runs from front to back, then once it gets in the back of the unit, the slinger ring will sling the cleaner all over the back coils and clean them as well.
I buy many cans of this every year in the spring to get my units ready for the summer. Price is great for what you get and the cleaning you get! WILL BUY AGAIN!!! Thank you!.
Bought 2 cans to attempt to get rid of the musty, moldy smell that would come from my vehicle’s air vents every time the fan was switched on. Sprayed 1 entire can into the evaporator enclosure, via the a/c unit temperature sensor port.
The expanding foam completely filled the space, then after doing its cleaning and deodorizing magic, drained out from the a/c units condensation drain. I repeated this again with the second can, then allowed it to completely drain.
I was pretty grossed out seeing the colour of the gunk that came out, plus knowing that I was breathing in that stuff before. I then switched on the ventilation fan on the highest speed setting with the a/c and heat both off for about 5 mins.
Then I started the vehicle and ran the ventilation on the highest fan and heat settings to completely dry out the evaporator. This product worked like a charm, leaving a pleasant citrus aroma, which wasn’t overpowering and dissipated after a few days.
We have had a mini-split 4-zone system for our house for the past 4 years. We noticed a musty odor when the unit was on. We used this in a spray bottle and sprayed the coils down from top to bottom and then started the unit.
It then had a faint smell of the product for a while which went away shortly. The musty odor has not come back since. If it does it will be easy to spray some more of this product. The 4-stars for “easy to Use” is because of the nature of our unit which is cumbersome to spray from the bottom, not the product.
Used this on a recent mini-split cleaning – worked really well. Just pour into a spray bottle and spray away. If the spray bottle has adjustable nozzle all the better – you can direct stream into unit to get to fan blades.
Also decided to use on the mesh filter and then the inside cover of a window unit – amazed at how easy to use – just spray and rinse.
Great safe and effective cleaner. It’s neutral, so not an acid or base and won’t burn your skin. It is still a great cleaner. Heavily soiled coils may take some dwell time or a second cleaning, but that’s true with any cleaner and no worries on destroying the coil.
Viper products are the safest & best products for the customer, technicial & environment. Best results are when combined with the Viper Brite Coil Cleaning Spray Gun. I will always support Viper and those that provide their products over the competition.
Keep your vehicles heating/cooling system clean with Lubegard 96030 Kool-It Evaporator and Heater Foam Cleaner. It’s fast and easy to apply and doesn’t require any drilling or additional tools for use.
This foam cleaner spray removes contaminants and eliminates foul odors and allergens such as bacteria, mold and mildew effectively improving the interior air quality. It also helps to keep your HVAC system functioning at a high level of performance.
Bought a car online. I really liked the car and my mechanic said the car was in excellent shape mechanically. The one problem was the odor in the interior. After some research, I found out the culprit was the evaporator.
The previous owners used the A/C in recirculate mode too often and didn’t allow enough fresh air in the system to keep mold from developing. So, I ordered Kool It. I watched the Lubegard tutorial video and tried with the first can.
The problem is my 2016 Accord V6 has a drain tube that is buried in the frame. There’s no way to see it to know where to put the tube attached to the can of Kool It. I tried anyway and not a single drop of the chemical made it into the evap drain but I had a clean frame rail! After watching a few videos, I realized that I could still use the Kool It but I needed to locate the blower motor on the interior.
I ordered a second can. I drilled a 3/16″ hole in the space between the blower motor and the evaporator. I don’t recommend drilling a hole bigger than 1/4″. When using this method, the trick is to use the blower fan to move the foam in to the evaporator.
Since pumping the foam between the blower and evaporator is not the recommended method by Lubegard, there is no included plug for the hole you drilled. Make sure you have hole plugs on hand before you drill.
So, start your car, turn on your A/C, set it to its lowest temp, and turn your blower motor on high. You don’t need to use recirculate mode for this but do as you see fit. Using tube included with the can of Kool It, spray the foam into the hole in short bursts, every 5 to 6 seconds.
If you hear the motor squeak or slow down, give it a few seconds to blow the foam into the evaporator before adding more foam. It’s possible you may see bubbles come out your vents. If that bothers you, turn the fan down a little bit, but you still need it high enough to move the foam into the evaporator.
One note: you’re going to be working underneath the dashboard on the passenger side. I don’t recommend setting the fan to blow towards the floor. You’ll get overwhelmed by the chemical smell. Blow the air out the dash vents or windshield vents.
Once the can is empty, turn off the car and let the chemical work for 15 minutes. After 15 minutes, start your car with the A/C on and let it run for 5-10 minutes. You do this to let water form on the evaporator and rinse out any remaining chemical and the dirt is loosened.
2017 Kia Sportage the drain line was clogged. The long tube included helped work the clog loose, after that about a gallon of water came out. It helped some of the mildew smell, but even after everything was dried out there was still a mildew smell.
Used 2 cans (not much in there). A few days after treating we had to replace the AC/Heater fan because the bearings were making noise. I’m not sure if the damage to the fan came from it just being flooded or if the chemicals in the cleaner contributed to the damage.
If this happens again, I think I’ll just unclog it and then spray lysol into the the vents to kill any mildew.
Water wasn’t draining out of the evaporator box and was flooding the inside interior. The sharp bend in the drain pipe made it tough to break the blockage with fish-tape or a rod. Got the tube from this kit just past the bend and started dumping the foam cleaner in there, also used my thumb to plug up the drain pipe.
I felt a thud and a few moments later, I got a shower from all the water that was trapped in there. The A/C did smell a bit cleaner during the 5min clean out run.
Neutralises odours but will not harm drain pans, plastics or other unpainted materials. Suited for use with almost any coils, the AC-Safe 560ml Air Conditioning Coil Foaming Cleaner is a heavy-duty detergent easily removes dirt, grease and oil.
I was expecting a better and uniform foaming when spraying on AC coils, but it instead dumped foam in one spot a lot and then nothing for few seconds and then dumped foam again. When not foaming, it did sprayed the liquid so I knew cleaning solution is getting inside, but I expected uniform foam with spray which it did not do.
Other than that, it worked fine, I first removed the top fan, set it aside on top of the AC cabinet, then removed all debris using a wet vac, care full not to damage delicate fins, washed with water inside out, then sprayed the entire can from inside diest and then from outside, let it rest for 10 mins or so, then wash inside out first and the thoroughly all over.
I blow dried it with leaf blower but no need. AC works fine, and noise level gas gone down as well. A good product overall, just fix your spray nozzles so it sprays foam better.
Moved into a new place and the 2 year old A/C was caked with dirt due to construction next door and along the street. Took the top/fan off the unit, a rinse only took care of a little bit of the dirt.
Never run an A/C with heavy dirt buildup as the heat will bake on the dirt much worse. Many years ago I did A/C tech work, but no longer had any cleaning chemicals. I tried this product and after covering the inside and outside of the coil, letting the foam sit 10 minutes, and thoroughly rinsing from inside out, everything was like-new.
I can’t confirm if this product is appropriate for microchannel A/C coils or is aluminum safe, but so far so good.
Safe is a relative word! With knowlege and applied safety precautions, the user will be kept safe as well as their AC Unit! Directions don’t indicate this product is harmful if inhaled (except in the first Aid Section)! Otherwise it “Does Not” in the “Precaution Section” or the in the “Directions” for use.
Also it doesn’t indicate if coils that deliver air into the room are cleaned, all resedue must be thoroughly rinsed and dried to avoid breathing vapors or fumes! I cleaned the condenser coils and conditioned air/heat exchanger coils on my indoor portable AC Unit and I suffered for nearly 4 days.
Severe throat irritation w/immense pain, body aches, bronchial irritation & coughing w/ yellowish phlem produced. I’ve recovered but believe the assumption by the Mfg & the AC industry is that the Condition Air/heat exchanger coils are rarely cleaned due to the difficulty in accessing them.
The warnings indicate that the product is corosive or a skin irratant. Inhalation issues are not identified except in the First Aid Section of the label. In the precautions section, it simpy idendifies skin, eye and face protection but nothing about respritory protection or the need for adequate ventilation.
So this review is meant to help educate and warn potential buyers not to do as I did! As faras how well it cleans the coils, it does work very well.
By cleaning your air conditioner coils you can reduce your electric bills up to 40-percent per month. Coil Clean instantly removes dirt and grime. You will pay less and still get all the cooling you desire.
Simply spray Coil Clean on the AC coils, allow the chemicals to work (3-5 minutes) then rinse. Fast safe and very economical compared to increased electric bills.
A revolutionary “no rinse” product formulated specifically for indoor cleaning of evaporator coils. It is metal safe and will not harm the metal of evaporator coils. Increases System Capacity Reduces Head Pressure, Improves Heat Transfer -Biodegradable and USDA Approved Product Description Evaporator Power is a “no-rinse” product formulated for cleaning indoor evaporator coils.
This is a easy to use cleaner for evaporator coils as opposed to removing and cleaning the coil unit. Just need distilled water and a hand sprayer to mix and spray correctly. The no rinse non corrosive formula is ideal for DYI.
I used this to get rid of that musty start up smell between heating and cooling cycles using a heat pump unit. Although it says it’s not necessary to rinse I did anyway to be sure and then ran a cooling cycle to complete the rinse.
Worked like a champ. One gallon is adequate for at least 3 complete cleanings.
I had to clean my A-condenser, which was not touched, probably from the installation (7 years). It was really clogged, furnace was even overheating during realm cold nights Chicago weather. After vacuuming and spraying this cleaner three rounds, furnace runs like new- les running and more blowing power comes out from the registers.
It worked really well, no odors or rinsing after usage.
This Nu-Calgon 4291-18 Nu-Brite 18 oz. aerosol condenser coil cleaner delivers the cleaning power you need to thoroughly clean and brighten dirty condenser coils! This product boasts a high-foaming formula made with the best possible detergents and chelants.
This allows it to cut through even tough grease and grime, and to lift dirt up out of condenser coils to be rinsed away. And since it’s alkaline-based it’s much safer and cleans better than more dangerous acid-based cleaners.
Use it to clean and brighten air-cooled condensers and other finned heating and cooling coils. It is not for use indoors, or on evaporator, coated fin, or micro-channel coils. The 18 oz. aerosol can makes it convenient to apply on affected areas.
Application should be performed by an HVAC/R professional. After the equipment is turned off, spray the solution onto dirty condenser coils and allow it to remain in contact for 5 – 10 minutes. After, thoroughly rinse with water and apply a coil protectant like CalShield (sold separately).
This works great. I would like to share a tip, and that is do not shake the can hard before spraying the coil. Take it and tip it to the left then tip it to the right. Do no shake. The spray will come out liquid and go into the flns of the coil better and after spraying wait and see it foaming out the dirt.
Nu-Calgon 4291-08 Nu-Brite Condenser Coil Cleaner 1 Gal Description: For cleaning and brightening air cooled condensers and other finned heating and cooling coils located outside. It is an alkaline based cleaner that does all that an acid will do without the danger of an acid.
Nu-Brite’s state-of-the-art surfactants and cleaners instantly penetrate and lift layers of oily grime and corrosive deposits from the coil. Its foaming action pushes this loosened debris out of hard-to-reach areas restoring equipment to peak efficiency.
It appeared to have cleaned my condenser coil as advertised. I was disappointed to discover that an additional protectant was required after the cleaning. The cleaner itself is expensive enough without having to also buy a protectant.
Evap Foam no rinse is a high performance, heavy duty detergent, specifically formulated with special surfactants and alkaline cleaners that have been developed into a foaming, no-rinse product. The aerosol product can be sprayed either right side up or upside down, and is ideal for use on most coils, but particularly suited for cooling or evaporator coils.
Evap Foam will liquefy dirt, grease, oil, and other residues quickly and easily. Since it is fortified with corrosion inhibitors, it is safe for use on metals and other materials. The products fast-breaking foam is completely self-rinsing.
Simply spray Evap Foam on the coil and the foam will wash the emulsified matter off. The aerosol product is NSF registered for use as a coil cleaner in and around food processing areas, and helps leave the area deodorized with a pleasant lemon scent.
Drections for use: Turn off or disconnect power to unit being serviced, and remove any heavy or matted soils first. Shake well. Remove cap and point toward surface to be cleaned. Thoroughly saturate the targeted area with product.
Be sure foam evenly covers the entire surface. With this self-rinsing formula, the foam will break and condensation will completely rinse the emulsified material. However, you may wipe clean or rinse with water if desired or if using on non-condensation producing coils.
For extremely stubborn or heavy deposits, repeat applications may be necessary. Turn on or return power to the unit.
Does not require rinsing in most cleaning applications No flash or fire point Low odor formula Contains no class I or class II ozone depleting chemicals NSF C1, A1 registered for use in meat and poultry plants CRC foaming coil cleaner is a high performance, heavy duty foaming detergent designed to clean evaporator and condenser coils.
The aggressive alkaline detergent blend quickly cuts through dirt, grease, oil and other types of residue. CRC foaming coil cleaner is low odor formula that does not require any rinsing. Heavy duty foam detergent.
Cuts through grease, dirt lint, and other debris. No flash or fire point. Significantly reduces the risk of fire caused by incidental contact with live electrical equipment or solvents trapped by insulating materials.
No rinsing required. No class I or II ozone depleting chemicals or chlorinated solvents. 360 degree valve. Product can be sprayed from any position – even upside down. Applications includes air conditioning and refrigeration condensers, fan blades and blower wheels.
Does not remove calcium deposits very well, and does not work on portable AC units, since the foam is self cleaning all the deposits fall back down inside the recycling water which is used to cool the compressor with the pump that sends the water to the evaporator.
Since this is a chemical it literally destroyed all water pumps in the unit.
Tried to use a hose and water to clean the back of my window ac, but just didn’t do the trick. I’m getting too old to be pulling it out of the window, so I tried this spray cleaner and Wow in less than 20 minutes super cold air again!.
High performance, heavy duty foaming detergent designed to clean evaporator and condenser coils. The aggressive alkaline detergent blend quickly cuts through dirt, grease, oil and other types of residue.
A low odor formula that does not require rinsing in most coil cleaning applications.
* Evap Foam will liquefy dirt, grease, oil, and other residuesquickly and easily* Since it is fortified with corrosion inhibitors, it is safe foruse on metals and other materials* The products fast-breaking foam is completely self-rinsing* Spray Evap Foam on the coil and the foam will wash theemulsified matter off* The aerosol product is NSF registered for use as a coil cleanerin and around food processing areas, and helps leave the areadeodorized with a pleasant lemon scentEvap Foam No Rinse——————Evap Foam ‘no rinse’ is a high performance, heavy duty detergent,specifically formulated with special surfactants and alkalinecleaners that have been developed into a foaming, no-rinseproduct.
The aerosol product can be sprayed either right side upor upside down, and is ideal for use on most coils, butparticularly suited for cooling or evaporator coils. Evap Foam will liquefy dirt, grease, oil, and other residuesquickly and easily.
Since it is fortified with corrosioninhibitors, it is safe for use on metals and other materials. Theproducts fast-breaking foam is completely self-rinsing. Simplyspray Evap Foam on the coil and the foam will wash the emulsifiedmatter off.
The aerosol product is NSF registered for use as acoil cleaner in and around food processing areas, and helps leavethe area deodorized with a pleasant lemon scent.
I tried this on my evaporator coils, at my residence. I have a Carrier furnace/AC unit located inside my house. It’s about 20 years old. My AC wasn’t cooling as well, so I decided to check out the evaporator coils, because I never even looked at them in 20 years.
After figuring out how to take the cover off the A frame, I found the evaporator caked with “crud”. I guess my air filter hasn’t been doing a very good job, because the evaporator coils aren’t supposed to get dirty.
I would say they were very dirty and caked with dust and hair, mainly. After scraping off the surface layers of “Crud”, I then tried the Nu-Calgon foam. It’s supposed to be squirted between the fins as a liquid and expand, which is supposed to push the “Crud” in the fins to the outer surface, so it can be removed.
I applied the Nu-Calgon as directed and waited the appropriate amount of time, for the cleaner to do its thing. I did notice a little black filth mixed in with the foam as it liquified. I then used a Diversified T101 fin comb between the fins and pulled out all kinds of deeply impacted “crud”.
The fin comb did a much better job of getting the “crud” out, than the Nu-Calgon. I would say the Nu-Calgon removed almost nothing and isn’t worth the $14 price tag. It may work if your coils aren’t very dirty, but if they are dirty, don’t waste your money on this stuff.
I don’t have the ability to remove the evaporator coils and take them to a car wash (the best way) so I used the the fin comb – My AC started cooling a lot better, after the fin comb. Compressed air did little to clean the impacted coils.
In summary, I felt like this product was a waste of money, because it didn’t work well. I could have used 10 cans of this ($140), and it still wouldn’t have removed as much “crud” as the fin comb ($8).
If you have one of the ductless mini-split air conditioners, SOMEONE is going to have to do maintenance on it, or it will become useless. Maybe someday they’ll be re-designed to be lower maintenance, but till then, if you don’t keep the coils clean, the ‘drain pan’ (which is quite small & narrow) clean, and the drain line open, you’re going to have water intrusion & big trouble.
My two Klimaire units didn’t have any issue until the second year of svs. I live in the middle of Tx, maybe not the hottest place on earth, but our summer months are plenty hot. I had several A/C techs out when one of the units began leaking water down the inside wall, & they were clueless as to what the problem was.
Long story short, coils & drain pan needed cleaning, which is where this Evap Foam spray on cleaner, comes in. Someone is going to have to partially disassemble your mini-split to clean the drain pan, & clean the coils.
After a lot of money spent on ignorant a/c techs, I began doing this task. This Nu-Cal is the only brand I’ve tried so far, & I don’t think there are a lot of equivalents at this point, & I’ve got a couple of cans ready to go for the next time I need them.
Ductless systems ‘can’ be great, but either you, or someone is going to have to properly maintain them, and if it’s not you, you best know a professional that is familiar with how to keep them properly serviced.
applied and rinsed 3 times to my nasty, stinky 8 year old dehumidifier, rinsing the coils with a spray bottle of warm distilled water between each application. the amount of grunge and debris that came out was staggering.
the coils now look brand new, and the odor is 100% gone. ! product comes out in a strong thin stream, penetrating deep in to the coils and then foams up. my 8 year old dehumidifier now looks, smells, and performs, like the day I bought it.
Alkaline based coil cleaner, 1 gal, for cleaning air cooled condensers located outdoors, foams like acid based cleaners, restores equipment to peak performance, color blue, usda authorized, biodegradable.
I have dirty sock syndrome in my heat pump evaporator coils. I have to spray the coils about every 2-4 weeks when I’m using the heater part of my unit. The odor returns about every 2-4 weeks. It would be nice if the product could control the bacteria that creates the odor longer.
It works very well. Easy to use. Lifts out the dirt with no problem. Will buy again. When I need to. I used it on a 1989 park model trailer. Alot of build up through the years. The ac is blowing cool air again.
It doesn’t flush out like the must rinse type of cleaners but having family and pets to watch out for I think it’s the best choice. It does a decent job. I recommend rinsing with water just to be on the safe side.
You need to brush off all the dirt and trash you can to get the best result.
Evap-Fresh is a ready-to-use, non-abrasive, one-step cleaner and disinfectant for evaporator coils in small air conditioners, commercial air handling equipment, HVAC cooling coils and refrigeration equipment.
It is the first product of its kind in the industry to receive EPA registration for such claims.
This product does not perform as claimed. Per the directions, it is supposed to foam up and clean the coil. I sprayed the entire can and it never foamed. In addition, the smell is not pleasant and permeates your entire home requiring you to open windows in order to air out.
They did not ship this on time. I needed it and had plenty of lead time. Now that it is delayed I don’t want it. Can’t even cancel. Now I have to make a special trip to return. I hate when they lie to me.
A coil cleaner is a necessity for any air conditioner owner. The coils are responsible for transferring heat from the inside of the home to the outside. Over time, the coils can become dirty and covered in grime, which can reduce their efficiency.
A coil cleaner will remove all of the dirt and grime, and restore the efficiency of the coils.