How does your AC actually make cold air?

Is your air conditioner secretly doing chemistry while you’re inside pretending summer doesn’t exist? How does it turn hot air into cool air, and why does part of the AC blow out even more heat? In this episode, Melissa and Jam crack open the mysterious black box of air conditioning to explore refrigerants, phase changes, energy transfer, and the surprisingly clever science keeping your house livable. Plus: frozen AC coils, summer survival drinks, and the beginning of Hibiscus Girl Summer.

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Timestamps

00:00 — Could we survive a Texas summer without air conditioning?
01:52 — Opening the mysterious black box that is your AC
02:50 — Traditional air conditioners vs. swamp coolers
03:33 — The two chemistry concepts behind air conditioning
04:38 — Understanding energy transfer through human collisions
05:49 — Phase changes explained using a crowded theater
10:30 — How an AC removes energy from hot air
14:20 — What happens inside the refrigerant coils
15:46 — Cooling and recycling the refrigerant
18:50 — Do refrigerators work the same way?
23:19 — Why would ice form inside a broken AC?
28:42 — Our favorite treats and drinks for surviving hot weather

References from the Episode:

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