Why're the air conditioners in my apartment bldg running in a snowstorm?
February 12, 2014 1:11 PM Subscribe
HVAC question: I live on the top floor of a large apartment building that has all the air conditioning heat exchangers on the roof. It is currently snowstorming. Why can I hear multiple heat exchangers running right now?
posted by wondercow to Technology (6 answers total)
Each unit in our building has an electric heat pump in the closet that runs the central air conditioning and central heating. Each unit also has its own heat exchanger
box on the roof. By heat exchanger (maybe I'm using that term incorrectly), I mean the box with the fins and the fan that allows the air conditioning to vent heat outside. Our building does not have natural gas service, so I don't think they are fume exhaust fans.
I thought the boxes on the roof only served to exhaust heat for AC. So, why are they running right now in the winter? Do a bunch of crazy people have their AC running?