More than you expect. Especially at night.
The latest video in our Ask Us Anything series takes a look at good ol' air conditioners and how they affect temperatures OUTSIDE your bedroom. You might be surprised at what we found!
So kick back, turn down the A/C, and enjoy some animated science!
Is there a science mystery you've been puzzling over? You can tweet it to us (@PopSci) with the hashtag #AskAnything, or email it to us at firstname.lastname@example.org.