UPDATE to the folks using this post to "advertise" their HVAC services: I am categorizing all such posts as spam and deleting them on sight. Stop wasting your time and mine.
My conversation with the facilities guy today, regarding a problem with the aged heating/cooling unit in my office:
FG: Someone called in a problem with the wall unit?
ME: Yeah. The cooling isn't working. It was working yesterday, but today it's only blowing hot air, even when it's supposed to be cool.
FG: That's what I thought the call down to us said. But I checked with my boss, and he tells me that there isn't actually air conditioning in this building.
ME: Yes, there is. I mean, there isn't any right now. But it was working yesterday.
FG: No -- this building only has pipes for heating, and a fan that circulates the regular air. You just thought it was air conditioning.
ME: I've been in this office 10 years. There's always been cooling. Including yesterday.
FG: My boss and four other guys told me there wasn't.
ME: But look: there's this dial right here that has two settings: one for heating and one for cooling. There are occasional problems with either one, but generally, they both do what they say they do.
FG: Let me get on the phone to my boss. [calls, confirms, puts boss and other Guys In Room on speaker phone, who also insist that there is not now, nor has there ever been, air conditioning of any kind in FO-2]
ME: Hang on here a minute. [walking next door to office] Coleague, is your AC working?
Martha: It was yesterday. Let me check. [turns on AC] Yep.
FG: [sets thermometer to measure temperature from wall unit next door]. Huh. 70 degrees. So there is air conditioning in this building. Let me see if I can fix yours.
To be fair, the guy in my office was very nice and apologetic about it once he realized his error. And I was equally gracious, assuring him that I understood he was only working with the information he had. And my cooling now works. But still.