HomeBLOGAir ConditionersThe 10 Best AC Coil Cleaners

The 10 Best AC Coil Cleaners

If you have to clean the coils on your air conditioner, you will want to have the right cleanser to make it easier. There are plenty of options that one would need to look at, including professional-grade and much more. It would help if you looked at what option will fit your needs, including the type, ease of use, price, and much more.

If you are still unsure about which option you might want to consider and purchase for your needs, then you should keep reading on. This is our comprehensive guide that will help you choose the best option for all of your requirements, no matter what they might be.

Top 10 Best AC Coil Cleaners 

There are so many brands and products that you would pick and choose from when it comes to AC coil cleaners, and you need to know what they are. Here are just 10 of the top brands that you should think about and look at, such as:

  1. Best Overall: Frost King ACF19 Foam Coil CleanerFrost King ACF19 Foam Coil Cleaner

If you want only the best product available, then this will be the one for you to look at. This one is citrus-scented, and it comes from the Frost King brand, and the can holds 19 ounces. It is a foam-based cleaner that would help clean your air filters that can be reused, fan blades, and even the coils.

The foam for this product is heavy-duty and it can remove oil and grease, dissolve stains and even loosens up hard to get rid of dirt. It can also neutralize the odors that would come from water that is standing in the drain pans.


  • Can neutralize bad odors
  • Easy to use
  • Affordable


  • Nozzle can be hard to use


For those who don’t want anything but the best, then this will be the product that you want to have in your cart when you are checking out.

  1. Runner Up: Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil CleanerNu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner

Another great option that you can purchase foam-based is this model, and you don’t even have to rinse it off. It is a lemon-scented product, and it will liquefy various residues, oil, grease, and dirt easily and quickly. This is also made with some corrosion inhibitors to use various metals and various other materials without worrying.

The foam is fast-breaking and it is self-rinsing and the product is registered NSF in terms of use for cleaning coils in any food processing areas, which leaves a light, pleasant scent of lemons.


  • Ideal for food processing areas
  • Easy to use
  • Great for cleaning up pet hair


  • Not ideal for refrigerator coils


If you have pets, then this product would be a good option to help clean the coils of any hair or dander that might be collecting over time.

  1. Best Budget Option: 3X Chemistry Foaming Coil Cleanser3X Chemistry Foaming Coil Cleanser

If you are searching for something that you can easily and quickly wipe down after the set period is over, this product would be great. Not only that, but it is highly affordable and straightforward to use. It has a light scent that is ideal for any home, and you won’t even be able to tell that it has been used after the air conditioner has been cleaned.

This would be extremely useful if you have coils that haven’t been cleaned recently or that have a lot of mold or debris built up.


  • Affordable
  • Can be used for indoor and outdoor coils
  • Great for all types of air conditioner coils


  • Might need more than 1 can for harder jobs


If you are searching for something that you can use for all of the coils inside and outside of your home, then this model might be the perfect one to check out.

  1. SimpleAir Green EZGA Coil Cleaning SpraySimpleAir Green EZGA Coil Cleaning Spray

For those who want something that will be odor-free, then go ahead and check out this product. It is biodegradable, non-toxic, and effortless to use with a nozzle that is not overly hard to push down. It can also easily be directed into the hard to reach spots that you might not be able to get otherwise.

This will help to loosen up any debris and oil that is collecting on your coils and the bottle holds 19 ounces and is professional grade.


  • Professional grade
  • No odor
  • Easy to use


  • Expensive


If you don’t want to deal with an odor after you are done cleaning, then go ahead and look at this product to see if it will fit all of your needs.

  1. Diversitech Professional 880591 No Rinse Coil Cleaner ConcentrateDiversitech Professional 880591 No Rinse Coil Cleaner Concentrate

If you have a few air conditioners to clean or an HVAC professional, this concentration will be great for the coil cleaner. This doesn’t require you to rinse the coils down after being applied, which comes in a 1-gallon container. You have to spray it on the coils after mixing it with 3 parts of water and then let it do the work to remove all of the oil, dust, dirt, and much more.

However, if the coil or your evaporator are extremely dirty, then you might want to rinse them off after letting it sit for around 30 minutes.


  • Can be used for heavily dirty coils and condenser
  • High-quality product
  • Simple to use


  • Must be watered down to use it


For those who want something that will be in a larger quantity or that you can use for more than one air conditioner or for your business, then make sure to check out this 1 gallon concentrate coil cleaner.

  1. Rectorseal Foaming Coil CleanserRectorseal Foaming Coil Cleanser

Another great option that would be concentrated and need to be diluted before use is this product. It comes in a 1-gallon plastic bottle, and it has a foaming action that will penetrate stubborn dirt, tars, grease, and other debris. It would help loosen them up and remove them to rinse them away with some water easily.

This will be extremely economical and this is going to be usable on aluminum and copper without any issues. It is also biodegradable, which makes it very friendly to the environment.


  • Professional grade
  • Can be used on copper and aluminum
  • Biodegradable


  • Might require more than 1 application to become fully clean


If you want something that is professional grade and that will be very simple to use, then this concentrate might be the ideal product for you to purchase.

  1. Nu-Calgon Evaporator Concentrate Coil CleanerNu-Calgon Evaporator Concentrate Coil Cleaner

For those who want something that will be stronger than the foaming products, this concentrated product is great to use. This doesn’t need to be rinsed off, and it is great for the indoor coils; it is slightly alkaline and green in color, and it is metal-safe, so you don’t have to worry about any discoloration.

This will also be great for the most stubborn deposits, soils, dirt, oil, and grease that would be accumulating. This is a highly concentrated product, and it would need to be diluted down with 3 parts water before it can be used.


  • Highly concentrated
  • Great for indoor based coils
  • Safe for all metals


  • Must be watered down before use


Another great product that you can use from one of the top brands in this concentrate will be straightforward to use and effective in cleaning your indoor based coils.

  1. Lundmark Inc. 3226F32-6 Coil CleanserLundmark Inc. 3226F32-6 Coil Cleanser

If you are looking for a product that can be used on the condensers, coils, and fins of your air conditioning system, this might be one to look at. This is ideal for cleaning and helping maintain the air conditioner coils while increasing the efficiency of airflow through the fins and increasing the fan motor’s longevity.

This will also be safe to use for the landscaping of your home, and it is ready to use. You need to spray it on the area and then wait for the time to pass and rinse it off.


  • Ready to use
  • Affordable
  • Easy to rinse off


  • It doesn’t get rid of odors
  • Not ideal for usage on stainless steel


If you have been looking for something that you can use on all parts of your air conditioning system, then this should be the product you are looking at in-depth.

  1. Nu-Calgon OEM Nu-Blast Condenser Coil Cleanser71nTGsvHfIL._AC_SL1500_

When it comes to cleaning your AC system, you want something easy to use and from a trusted brand, and this product is just that. This one is non-flammable and is non-conductive as well, and it is great for delivering high pressure. This also needs to be sprayed on, and it would dissolve all of the debris stuck on.

You don’t need to worry about spraying this off since the condensation would remove it, so go ahead and worry about something else.


  • Simple to use
  • Foams a bit
  • Great for refrigerator usage


  • Might need more than 1 can for larger central heating systems


If you are looking for something that can easily be used on your window or split AC systems, then go ahead and buy a can of this to see how good it works.

  1. Nu-Calgon Blackhawk Expanding Foam CleanserNu-Calgon Blackhawk Expanding Foam Cleanser

Another product from the top brand is this one, and it is extremely high-quality and easy to use. This is an expanding foam that will get into the deeper parts of the coils, and then it turns into a liquid so that the oils, grease, and grime can be removed easily. This will also be safe for usage in any area of food processing.

This is a non-rinse formula, and it can be used on metal surfaces, exhaust hoods, and even for cleaning any washable filters.


  • It can be used in food processing areas
  • Ideal for cleaning filters
  • Environmentally safe


  • Not ideal for very greasy coils


If a brand is important to you, make sure that you are checking this product out from one of the industry’s top brands.

AC Coil Cleaners Buying Guide

You will always want to ensure that you are buying the best of the best when it comes to cleaning agents or products for anything in your home. This applies to your air conditioner and the coils that you would need to keep clean. Here is everything that you want to know about buying the right AC coil cleaner for your needs.

The Importance of Keeping Your AC Coils Clean

There are plenty of reasons that you want to keep the coils of your air conditioner clean, but the biggest one is that it will be much more efficient. If you are cleaning the outdoor coils, you will ensure that all of the debris and dirt that would be blocking the filters are cleaned. This will help save money over time, and you would be able to keep your machine running for a longer period of time if it is properly maintained.

DIY or Hire a Pro

You might be thinking about whether or not you will be able to clean the coils yourself or if you need to hire an expert. However, there a few options that you can consider, including:

  • How to clean a/c coils – Depending on the type of product you have, you can either spray it directly on the coils as is, or you would need to dilute it down. Once you have the product ready, you need to spray it onto the coils and then let it sit the required time. After the time has elapsed, which can be around 10 minutes or longer, then you either need to rinse it off or turn the machine on depending on what the directions say.
  • How to clean condenser coils – You will want to ensure that you are looking at the coils and seeing just how dirty they might be. If there are large debris that you can see on the outside, then go ahead and brush those off. After that, you want to straighten out the fins and spray the product directly onto the fins. This needs to sit for around 10 times; then, you can rinse the fins down if necessary.

However, there can be some problems with cleaning them yourself, especially if you don’t have the time. Make sure to consider if you will do the maintenance yourself or if you want to hire the experts to handle it.

How to Clean Evaporator Coils

If you have already purchased your AC coil cleaner, you will need to get that ready. However, you can do this with some warm water and some mild detergent if you don’t. Here are some steps that you need to take to help you clean the evaporator coils properly, including:

  1. Getting your product or detergent and water solution ready
  2. Applying the solution directly to all of the evaporator coils
  3. Wait a few seconds or minutes before it can soak in and start to loosen up the debris, and apply if required
  4. Wipe down the evaporator coils of the loose materials using a brush or soft cloth

This process should be done every few months and especially at the beginning of the summer and winter. Ensure that if you are doing these steps and the evaporator coils aren’t coming completely clean, you will repeat them as many times as required.

Types of Coil Cleaner

Another thing that you need to be aware of is the various types of coil cleaners available. The more you know, the easier it will be for you to decide which one to go for. Some of the types include:

  • Acid-based – This one is made using Hydrofluoric acid, and it shouldn’t ever be used in any indoor system, including chilled water or evaporator coils. This should also be used for outdoor usage for air-cooled condenser cleaning.
  • Alkaline – This has sodium hydroxide or Potassium as the main active ingredients. These should be rinsed off fully when used in any AC system to ensure that the coils and the entire system aren’t damaged.
  • Evaporator – These are non-toxic and non-corrosive, and they are great for being used for indoor systems. These are often either in foam base products or concentrates so that you can water them down before usage.

Ensure that you consider all of these types and choose the one that would work for your needs.

Capacity vs. Cost

Another thing that you are going to want to consider is the cleaner’s capacity versus the cost. Think about how much of the product you would need to clean the system you are using, especially if you are going for the canned products. The majority of the canned products can handle one of the split-level air conditioner systems, while the concentrate will clean the entire household central air system.

Characteristics of a Good AC Coil Cleaner

You want to make sure you are aware of numerous characteristics before you look at the AC coil cleaners. These includes:

  • Alkaline-based – These products are acid-based, and it is often found in a wide variety of cleaning products. The acid can help with getting off stubborn dirt, but it can also damage your coils. This is why you want to consider finding a gentle product that is alkaline-based rather than just water.
  • Usability – You also need to make sure that the product you are looking at will be easy to use and doesn’t require a lot of effort. Think about whether a sprayer will be included since this makes applying it simpler, and you don’t have to worry about overdoing it.
  • USDA authorization – Another thing you need to think about is whether it can be used close to food preparations. If it has authorization from the USDA, it will be safe, and you don’t have to worry about anything.
  • Versatility – You might also want to consider purchasing a product that doesn’t need to be used on coils alone. This is because you would only need to use it once or twice a year, so think about if you can use it on other items in your home to get rid of grime and dust.
  • Price – The final thing that you need to consider and that is the price. These products can end up costing you more than any general-purpose cleansers, so think about the cost. However, for the most part, a small amount of this product can be highly effective.

These are just a few of the main characteristics that you need to consider before choosing any product in the end.


  • Why is it important that I clean my AC coils regularly?

If you aren’t cleaning your AC coils regularly, then debris, dirt, and oil will be collecting. This means that the fins on your system won’t work as effectively, which means you aren’t getting as much air in the home, and you are spending more on running it. Also, you would have to replace it sooner than if you were to maintain it properly.

  • How often should I be cleaning my AC coils?

You should make sure that you are cleaning the AC coils at least 1 time every year. If you don’t use the system in the winter, you might want to do it or have an expert inspect the system after the summer.

  • How do I know when I should be cleaning the coils?

If your system isn’t cooling down your house as effectively or as fast as before, you should look at cleaning it. You can order the product in advance and have it on hand so that you can clean it when it starts to get slow. However, you also want to clean it between seasons, especially after winter.


Ensure that you are picking the right AC coil cleaner for your needs, including the price. You also need to make sure that you know how to clean the coils and how often they should be cleaned, which should be around 1 time per year or even between summer and winter. Go ahead and use some of these cleaners to help keep your air conditioner in good condition so you can save money.

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