15 Dec 2015

When was the last time you cleaned your coils?

Growing trends in the HVAC Industry and new construction building., HVAC Solutions DIY How To No Comments

When was the last time you really had your coils cleaned?

A lot of a/c companies say there going to clean your heating and air system. But do they?

It’s been my experience most don’t, they just brush it off, fiddle around and pick out the leaves but they never really get down to the nitty gritty and clean the coils along with the blower motor.

I have done hundreds of service calls where the system I was called to work on had been maintained by another company every year. The air conditioning slowly started not to work, and this year there told it can’t be fixed and it is going to be 6 thousand dollars to replace it.

I will put my gauges on the machine and see that one or both of the coils are completely clogged. And once cleaned the system runs just fine better then its been in years. Cleaning the coils is something I learned at a young age working with my father in New Rochelle NY on window units. My father would go out the night before appliance pick up day with the intent of finding air conditioners, fixing them and reselling them. This was when window units were expensive and better made then now. And many times they just needed to be cleaned and they worked just fine.

The outdoor coil pulls in dirt, grass clippings, pollen, bugs and all sorts of small things that float around outside. All these things work to block the airflow or hinder the exchange of heat. They can not be removed from the coil with a vacuum. They must be properly removed with soap and water and at a minimum high pressure air.

The indoor coil which is the hardest to clean sometimes starts out dirty because they ran the unit for heat during construction. Many times we use inadequate filters or none at all. Dust, hair, dead skin, pet dander and all sorts of things get into the coil when its not properly filtered. And cleaning this coil can be a real job that is why it never gets done. Having a dirty coil causes several different problems. One is low suction pressure which can lead to someone putting to much freon in your system, it can cause low air flow which hurts you in many different ways. I have cleaned coils where the air flow was so bad it caused the furnace to overheat in the winter and shut down the burner on high limit. At least once every five years you must be willing to pay for a couple extra hours of labor to have your coil inspected and cleaned.

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