HOW OFTEN SHOULD AC COILS BE CLEANED?
March 12, 2021
By far, air conditioning systems are the most used part of any Arizona household’s HVAC equipment. Keeping the two halves of your air conditioning system clean is a task that is so often forgotten. Everyone knows to change an air filter, that is simple enough. But not everyone is aware that that by itself will not keep the indoor coil clean forever by itself. Not to mention the fact that that does nothing to keep the outdoor coil clean at all.
WHAT HAPPENS WHEN THE COILS GET DIRTY?
Did you know you have TWO coils? The air conditioning system runs on two halves, the indoor and outdoor coils. But what do they do? When the system kicks, the indoor coil is responsible for extracting heat from the air as the fan pumps air through it. The outdoor coils job is to dispense that heat into the outdoor air. Some households have electric systems called “heat pumps” which can run in the opposite direction to bring warm air in during colder months. These units can make the two coils simply switch roles.
Now as far as how cleanliness affects the coils, let us examine the environment the coils exist in. Starting with the indoor coil, it exists in a perpetually dark space. It also generates a cool environment due to it absorbing heat. As those coils get cold, they cause condensation to occur on their outsides, removing moisture from your household, but also leaving moisture around them. This creates the perfect storm for bacteria and mildew to form. This can coat the indoor coil and strangle it from receiving the proper amounts of airflow, making the unit work harder and be less effective all at the same time. This problem can be made worse if the air filter is missing, damaged, or severely dirty. Because now you are also adding debris from the household into the coil space, further clogging it. And let’s not talk about the conditions if you have pets! Pet hairs can also get stuck in the fins of your coils and even further reduce the airflow.