Evaporative Coil - An evaporative coil is the part of a split AC unit that is located inside of your home, or in a utility room or attic.
Thermostat - The thermostat is the control panel for your air conditioner that is located on the wall of your house somewhere.
Air Filter - Your air conditioner has an air filter that is located somewhere that is usually (not always) easy to change. You should be changing this every three months.
Why Your AC Won't Turn On
To help you troubleshoot your broken AC, let's take a moment to discuss how your air conditioner actually works.
An air conditioner works by compressing a refrigerant, which will cause it to heat up. If we were to do this outside of your home, the refrigerant would release heat...heat that was once inside your house. This is what the condensing unit on your AC does, and you'll need to know this if your AC isn't working.
If we were to expand the same refrigerant, it would then get really cold, right? If we did that inside of our house, that would cause the air in our home to get colder. That is what the evaporative coil in your home does.
AC for Dummies - Air conditioning works by expanding gas rapidly inside of a coil, causing the air inside of your home to cool when it is blown over this coil.
So why does this matter? Well, if your AC won't turn on, it's because one of these things isn't happening. Don't get too lost...just remember that air conditioners are really simply pieces of machinery...
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