Myth #5: Air conditioners generate or create fresh air
Contrary to popular belief, air conditioners do not create, let in, or generate fresh air. What they essentially do is refrigerate the air within a room.
Here’s how a conventional AC unit works: your AC forces refrigerant to evaporate and condense into a gas within the system of coils. As this liquid compound converts into a gas, it becomes colder. The refrigerants convert from liquid back to gas in a continuous cycle through a compressor. Meanwhile, a fan located within the AC unit moves warm air from your room over the coils filled with cold refrigerant and chills it.
This process of conversion generates heat, which is pushed outdoors by another set of condenser coils and a fan. While air conditioning may feel like new or fresh air is being produced in your room, in reality you are merely feeling refrigerated indoor air.
If that was confusing, this diagram might help:
Myth #6: Unless there’s a problem, you don’t need to regularly check your AC
As long as your AC turns on and circulates cool air within your home, it may be easy to forget that these appliances need some routine maintenance. Remember to periodically clean your AC and filters to ensure efficient performance. The difference in energy consumption between a dirty filter and a clean one can be up to ~5% so make sure to be on top of things!