The Best AC Coil Cleaner You Can Get Today

Now that summer is gone, you probably wouldn’t be using an AC anymore. So, should you stop worrying about it tell next summer? Sure, however, there’s one catch. Air conditioners need maintenance.

When you switch on the AC, air constantly passes through it to reach the refrigerant. This accumulates dirt and dust particles in the coil which must be cleaned over definite intervals. If not, then it is only a matter of time before the AC stops working.

Hiring professionals is the best way to get your AC serviced. But if you’re running low on cash and the contract between you and the company has ended, getting professional help may not be an option. If the air conditioner is not working or fails to filter the dirt and dust properly, try cleaning the coil yourself. Don’t know how? Just follow the instructions on the pack of our five recommended best AC Coil Cleaners.

top 5 Best AC Coil Cleaner Reviews

#1. Nu-Calgon 4291-08 Nu-Brite

This alkaline-based product dissolves and foams dirt and grime out of the coil. Using an acid-based solution is not always safe but this phenomenal AC Coil cleaning detergent gives you results better than acid cleaners guarantee. It foams and brightens the coil restoring its former glory. This AC Coil Cleaner is biodegradable and U.S.D.A. authorized to be used in federally approved meat and poultry businesses.

Nu-Brite is ideal to clean and polish AC condensers and other external heating coils. It is an alkaline cleaner that features all the qualities of acids minus the dangerous demeanor. This Coil Cleaner is formulated to lift off grease and dirt right off the coil. Its foaming–action pulls the oily grease and dirt from areas difficult to reach simplifying the cleaning process.

Now let’s look at some of its features in detail:

  • Strong Formula: Unlike most cleaners, this coil cleaner is not acidic. It is alkaline-based and a lot safer than using acid. The solute, when diluted with water, is still very strong. Nu-Brite is used in concentration with water (1:4) and offers a good value for money. You can use one pack of Nu-Brite longer than many gallons of generic Coil Cleaners.
  • Easy-to-Use: Though ideal for professionals this product is a great fit for amateurs too. Simply mix the liquid with water in the ratio 4:1 and spray it to the exterior portion of the coil. When done, rinse it off with clean water. That’s all you need to brighten your AC Coil and enjoy its cooling without any interruptions.
  • Biodegradable: This cleaner is U.S.D.A approved for poultry and meat establishments that are federally approved.
  • Quick Foaming Mechanism: Its quick foaming action pushes sticky debris out of hard to reach areas. This brightens and restores the equipment to its peak efficiency.


  • Alkaline-based Coil Cleaner
  • Good value for money
  • U.S.D.A. authorized
  • Formulated with best Foaming detergents
  • Easy to use and apply


  • Corrosive
  • Cannot be used on Evaporator coils or indoors

#2. Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner

The Evap Foam No Rinse is the best Coil Cleaner for Evaporator coils. As the name suggests it is a "no-rinse" cleaner which makes it adequate for amateurs. Less work and great results make it one of the most sold products on Amazon.

It is NSF certified which means it can be used indoors without being hazardous. Nu-Calgon Evap Foam No Rinse cleaner leaves the room smelling like fresh lemons post-use. What's more, is you can use it on refrigerator coils too. 18oz of the product fits in one can which is good for two jobs depending on the extent of the job. The formula is already prepared for use—diluted and ready-to-go without creating a mess. It is affordable but cannot be used quite as much as the cleaners that need to be diluted.

Now let’s look at some of its features in detail:

  • Usability: With its ready-to-use formula, this Coil Cleaner is very convenient. Spray it on and watch it break down the dirt and grime off your equipment in seconds. You can leave it in without corroding the Coil. No rinsing required. This makes it a great choice for DIYs.
  • Versatile: When buying a Coil Cleaner, we recommend going for the ones which have multiple applications and aren’t limited to your AC coils. This versatile cleaner can be used on AC and refrigerator coils.
  • Sweet Odor: Many cleaners leave a pungent smell after applying them and that smell is difficult to get rid of. However, the Nu-Calgon No Rinse Evaporator Coil Cleaner is scented like fresh lemons. Whenever you have guests over, turn on the AC and the room instantly starts to smell fresh.
  • No Rinsing Required: With its unique no foam formula, this cleaner does not require any water to wash it off. The formula is non-corrosive and biodegradable, so it does not harm the equipment.
  • NSF Approved: The aerosol product is NSF approved thus safe to use around food processing areas.


  • No-Rinse and non-corrosive
  • Prepared formula
  • Biodegradable
  • Scented to give a fresh fragrance to any room
  • NSF approved


  • Finishes only 2 jobs in one can
  • Not good for removing pet hairs

#3. Frost King ACF19 Air Conditioner Coil Foam Cleaner

The Frost King ACF19 Air Conditioner Coil Foam Cleaner is a versatile, water-based, heavy-duty foam detergent coil cleaner. It offers convenient and easy application as it comes packed in an aerosol can. It easily liquefies dirt, grime, and any other residue and cleans every corner of the coil. The corrosion inhibitors prevent the cleaning process to harm the surrounding area including plastic and other materials.

The formula used is self-cleaning and will be cleaned off by the condensation on coils. The fresh citrus fragrance leaves the room deodorized. To use, remove the cap and point to the area that needs cleaning and spray. Completely saturate the concerned area and the self-rinsing mechanism will clean away the remaining material from the equipment. Avoid any contact with electrical wires and switches for safety. For non-condensing coils, wipe off the material or rinse to remove any excess material that remains.

Now let’s look at some of its features in detail:

  • Multiple Applications: Buying a different cleaner for different coils is gruesome for anyone. This product’s versatility allows you to use it on any type of coil—window air conditioners, heavy AC units, refrigerators, and so on. It does not harm the equipment in any form.
  • Eco-friendly: The material does not harm surroundings including drain pans, plastic, and other materials. It contains no CFCs, fluorinated or chlorinated solvents.
  • Self Rinsing: The formula allows this cleaner to self-rinse on condensing coils. For other kinds of coils with no condensation, you can wipe or rinse it as per your convenience.


  • Water-based, ready-to-use in an aerosol can
  • Citrus fragrance keeps the room fresh when the AC is turned on
  • Compatible with any type of coil
  • Corrosion inhibitors prevent any harm to the surrounding


  • May require multiple applications to remove stubborn grime and dirt

#4. CRC Foaming Coil Cleaner

Another detergent that comes in an aerosol can, leaves the coil clean and shining with its no-rinse formula. It leaves no trace of pungent odor keeping the room fresh for a long time. The heavy-duty Foaming Coil Cleaner is designed to clean Evaporator and Condenser Coils.

Its low odor, the no-rinse formula requires no rinsing without leaving behind a pungent smell. The alkaline Coil Cleaner consists of no hazardous chemicals and is very environment-friendly. The 360-degree valve allows spraying from any direction (even upside down).

Its applications are not limited to air conditioner coils, but it is also compatible with refrigerator coils, fan blades and blower wheels.

Now let’s look at some of its features in detail:

  • No Rinsing Required: This product needs no rinsing. Spray it on the Coil and the product does its work remarkably. For equipment without condensation, just wipe it off. No need to clean up the mess later.
  • No Flash or Fire Point: This feature reduces the risk of fire in case of accidental contact with live electrical equipment. This protects people from injuries and fatal accidents.
  • Low Odor Formula: Though it does not feature any artificial fragrance, the Coil Cleaner has a low odor formula. It absorbs any foul smell leaving only a fresh room when you turn on the AC.
  • Extra Safe: CRC Foaming Coil Cleaner does not include any class I or II ozone-depleting chemicals. The cleaner is completely environment-friendly and can be used indoors. It does not diffuse any harmful gases during the cleaning process.


  • Class I and II certified
  • No chlorinated solvents included
  • No flash or fire point
  • No Rinse mechanism


  • The foaming is inconsistent

#5. ComStar 90-298 Coil Safe Professional Grade Neutral pH Evaporator

This alkaline-based industrial grade cleaner enhances the efficiency of coils. It features a unique non-foaming and no rinsing formula to restore the coils to their original condition. Coil Safe is safe to use on aluminum and copper surfaces. The strong concentration of this product cuts straight through dirt, grease, and other debris with no problem at all. Its foaming feature lets it expand and clean grime between minute spaces.

This product, like Nu-Brite Coil Cleaner, needs to be diluted with water before being used. We recommend diluting it with 3-10 parts of water. It comes in different sizes so based on the job at hand you can select the best option.

Now let’s look at some of its features in detail:

  • Strong Cleaning Action: The ComStar Coil Safe Cleaner features a strong concentration which cleans stubborn dirt and grime in one go. It is a premium neutral pH Evaporator Coil Cleaner suitable for indoor use.
  • No Rinsing Required: Unlike Nu-Brite, this cleaner does not need rinsing after its application. The solution has a no foaming formula that leaves no residue and thus no extra water.
  • Value for Money: Since the product must be diluted with water it can be used a lot of times in comparison to other ready-to-use coil cleaners. It costs quite less and lasts longer which makes it a great fit for home use.
  • Availability: This Coil Cleaner is available in multiple sizes. Depending on the job at hand you can buy the size that seems enough to complete the job.


  • Is very affordable
  • Does not need rinsing
  • Strong formula to clean stubborn residues
  • Alkaline-based
  • Easy to use and apply
  • Does not corrode the Coil if left for a long time


  • Removes the coating of metals

You have to know: How to Use AC Coil Cleaner

FAQ of the AC Coil Cleaner

Want our suggestion? Then here it is:


Do you want a professional-grade product?

Then the Nu-Calgon 4291-08 Nu-Brite Coil Cleaner is an affordable yet effective solution. It is great if you own a cleaning service and deal with Coil cleaning services more often. Its foam cleans away all the dirt and grime leaving your coil bright and spotless.


Prefer a quick and easy fix to clean AC coils?

Then, choose an option that comes in an aerosol can. It’s easy to use and does not need an additional spray can to dilute the solution in water and then apply it to the concerned area. You may have to use the foaming detergent more than once to get the best results, but it gets the job done without leaving any trace.


Can’t stand the smell of detergent cleaners?

Then select anyone from the Nu-Calgon Evap Foam No Rinse Evaporator Coil Cleaner or the Frost King Foam Cleaner. Both fill the room with fragrant scents when you turn on the AC. If you’re fine with a low odor alternative, then the CRC Foaming Coil Cleaner will be a good fit.

Despite the product you choose from this list, we can guarantee one thing, you will be satisfied with the results of all these best AC coil cleaners. All of them leave your equipment clean and spotless. So based on your requirements and budget, you can make the choice.

Click Here to Leave a Comment Below 1 comments
Kevin - November 27, 2019

This article is so helpful. I learn so many things and best reviews ever.


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