Change in the Air is the second episode of Season 5. It aired on October 2, 2013.
Summary[]
Frankie has a hard time with Axl away at college. Mike tries to act cool about it even though he also misses him. Brick starts middle school and is afraid to use the bathroom because he thinks an eighth-grader will give him a swirly. This is an extra hot autumn, and the Hecks can't afford to fix the air conditioner. Mike calls in Darrin, hoping he can fix it for free. Darrin just started air conditioner repair school and didn't know what to do.
Meanwhile, Sue is happy now that Axl's gone. She feels like she's free to do whatever she wants. When she runs into Darrin, she considers getting back together with him since Axl is the reason they broke up in the first place. She soon learns that Darrin has a girlfriend named Angel, who goes to beauty school.