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My girlfriend insists that all air from outside is fresh air and stale air is what the air conditioning circulates.
Personally, I believe that the AC has fresh air, because it comes from outside!
Which brings me to you, our Science Lion community, what do you believe?
Does the AC provide fresh air or do you need to crack open a window to get a taste of the fresh stuff? Comment your thoughts below!
Science Lion Media 
“Though in split system air conditioners design, commonly heat pumps, part of your system is located outside your home, it does not take in outside air. Its main operational purpose of cooling the air in your home is not achieved by moving cool air inside, but by moving unwanted heat out.” Your GF is rght.
Full Article Link: https://www.delcohvac.com/do-air-conditioners-take-in-outside-air/
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Thanks for helping to resolve this! I’m disappointed but not surprised 😂 she usually is right!
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