system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's the difference between having a heater on 72 degrees and having an air conditioner on 72 degrees?
gpt
The selected temperature isn't necessarily the temperature coming out of the vents. If you're trying to warm/cool a room to a certain temperature, it puts out more extreme air.

Room is 70, you want 72, the heater comes out at 75.  
Room is 75, you want 72, the AC puts out 70.