Best AC Coil Cleaner & Easiest Way To Clean AC3 min read

by Ben | Last Updated: October 2, 2021


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Cleaning your air conditioner is always a boring task to do, but it’s even more frustrating when you have to clean AC coils.

However, this process can be simplified, and you should continue reading to discover how you can save time and effort when cleaning your coils. 

What I’ll show you won’t require removing your AC to clean it and you will be done in no time.

But first… let’s mention some of the coil cleaners that will finish the job.

Recommended Air Conditioner Coil Cleaners

1. Best: Nu-Calgon 4291 

  • Easy to use
  • Best formulated detergents
  • Safer than acid
Our Pick
Nu-Calgon 4291-08 Nu-Brite, 1- Gallon
$48.00
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11/22/2021 12:07 am GMT

2. Nu-Calgon Evap Foam

  • High-performance
  • Can be used on metals
  • Nice scent
Our Pick
Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner, 18 oz.
$11.80
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11/22/2021 12:41 pm GMT

Here’s a video showing how Nu-Calgon deals with dirt and dust:

3. Frost King Foam Cleaner

  • Heavy-duty detergent
  • 360-degree valve
  • No rinse necessary
Our Pick
Frost King ACF19 Foam Coil Cleaner, 19Oz, 19 Ounce
$6.95
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11/22/2021 05:11 am GMT

4. Comstar Coil Safe

  • Premium coil cleaner
  • 100% efficiency
  • Prevents metal fatigue
Our Pick
Comstar 90-298 Coil Safe Professional Grade Neutral pH Evaporator and Condenser Coil Cleaner, 1 gal Container, Green
Buy Now
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Air Conditioner Illustration

How to Use AC Coil Cleaner

Although the whole process isn’t very complicated, it shouldn’t be underrated and you should always take safety measures when cleaning your AC coils.

Before you even start with anything, turn off your air conditioner so there’s no power flowing.

Now, follow this step-by-step process when using AC coil cleaner:

  1. Open the front panel and remove the air filters
  2. Slide the right rotary shift to the opposite direction and to the vice-versa.
  3. Now, unfasten all the shafts and remove the blade
  4. Take out the grill (don’t forget to remove the hooks and screws before)
  5. Grab your cleaner and spray it all over the surface
  6. Wait for about 20 minutes for it to soak and then rinse the product

Now, let’s talk more about the cleaning process.

📚 Recommended reading15 Simple Ways To Save Money On Your Air Conditioning

How to Clean AC Coils 

We have two parts of cleaning air conditioner coils – condenser coils and evaporator coils.

Although you might think the process is the same, there are a couple of things that are completely different.

Let’s first talk about condenser coils.

How To Clean Your Air Conditioner Condenser Coil 

As I want to simplify everything for you, I’ll lay out this process in simple 5 steps:

  1. Shut off your unit completely
  2. Remove the debris and any grass around the exterior
  3. Take a good look at all the possible damages in fins
  4. Grab your coil cleaner and spray coils
  5. Take another look for damages after cleaning it

You can watch this process in-action on this video.

📍 Note: Sometimes cleaning can’t do anything impactful, so it’s best to call a professional.

How to Clean Evaporator Coils 

The biggest problem with cleaning evaporator coils is that they are often difficult to access without damaging or breaking the fins.

It’s important to always use eye protection.

Also, you need to be patient as evaporator coils can take longer to clean. It’s possible to clean evaporator coils by yourself (I’ve done it successfully after a couple of tries), it’s not shameful to call a professional or someone with experience.

Check out this video if you want to see the whole process of cleaning evaporator coils by yourself.

If you find this article helpful, please check out our other cooling articles and learn something new about air conditioning.

Benas Leonavicius
Hey there! I am Benas, the founder of Home Caprice. Thanks for reading the article, I hope you were able to find what you were looking for. Me together with my team, are here to simplify heating and cooling for everyone. If you want more details about the website and our team, please check the about page.