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How To Clean The Evaporator Coils Of Your HVAC

Evaporator coils in your HVAC unit are important components designed to provide effective and efficient air conditioning. Like many other things that need regular maintenance, evaporator coils do as well. And the best thing about it is that they can be cleaned without removing them. So, let’s take a look at how you can clean your HVAC evaporator coils without spending money on AC repair services.

Coil Cleaning Details

To clean the evaporator coils, you first need to turn off the air conditioner by switching the thermostat to “OFF”. Then, you are going to remove the panels that cover the coils. Grab a coil cleaner and spray it on the evaporator coils. If the dust and debris are stubborn, you might want to use a nylon brush to properly clean the area. Once the coils have been cleaned, install the panels.

Cleaning the evaporator coils is not as easy and simple as mentioned above. There is a lot more to the detail. For instance, there is a condensing coil inside the unit as well. You should clean it the same way you clean other coils to ensure that the unit runs efficiently.

How To Clean HVAC Evaporator Coils?

Now that you are aware of the basics, let’s get down to discussing how to clean the HVAC evaporator coils in detail.

Remove The Access Panel To Expose The Coil

Before removing the access panel, you should turn the thermostat to the “OFF” position. The last thing you would want is the unit running while you remove the access panels and start spraying. It can cause injuries or damage the unit itself.

Once you have switched the thermostat to the “OFF” position, you now need to remove the access panels to expose the coils. Remember to store the screws in a safe place so that you don’t lose them. If the panels have twists and knobs, you might want to hold them with one hand while removing so it does not fall. It might require a bit of force to pull the panels from their slots. Therefore, be patient.

Spray No-Rinse Cleaner Onto The Fins

There are different types of evaporator coils as they come in many sizes and shapes. However, all of them feature fins along with copper or aluminum refrigerant tubing welded to the side. Furthermore, coils are offered in A-shapes and N-shapes as well. You might also come across a cased coil. Such coils are installed in their own cabinet and you will have to remove some screws to remove the cabinet.

Once you have gained access to the evaporator coil, it is time to spray a no-rinse cleaner. Although there are many types of evaporator coil cleaners out there, you should opt for the one that is the most convenient and effective and does not require rinsing. Choosing an evaporator coil cleaner should depend on how dirty the coil is. If you observe that the accumulation is strong, then you are going to need a relatively more powerful coil cleaner. However, be sure not to overspray as an excess of everything can be bad.

You should spray the cleaner moderately on the evaporator coils. It will foam up and start to drip. Bringing down the grime and grease. Depending on the results, you might want to apply a second coat after 15-20 minutes. If the cleaner alone is not able to clean the grime and grease properly, you can use a gentle coil brush to help remove the dirt.

Install The Access Panels And Check The Air Conditioner

Once the evaporator coils have been cleaned, install the access panels and turn the thermostat to “ON” position. You might want to use foil tape to seal the cabinet. Check the air conditioner to see if it is running smoothly and is not creating strange noises. If it does, remove the access panel again to ensure that nothing is loose.

Final Word

Cleaning and maintaining the evaporator coils is necessary to ensure that you achieve optimum cooling and heating every season. Otherwise, the accumulation of dust and debris will put a strain on the entire unit. If you find the process complicated, do not risk it. Get HVAC companies Chantilly to help clean the evaporator coils.

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