AC Compressor coming on
So again, sorry for nub question, new to me truck, it's been cool/cold here lately (20-40's) but idling I hear a click, and drain on engine for a second or 2, then it stops.
The 'heat' is on mid-range temp, vents, or vent/floor on the right side of the dial.
Is this normal? It's not excessively loud or concerning just curious why it'd be on when outside temps so low.
I can watch the compressor start turning, then stop under the hood.