In my Queens building, I mentioned my AC issue to a neighbor while waiting for the elevator. He laughed and said he almost called repair for the same thing last week but solved it himself after checking a few basics. That made me curious, so I read https://acrepair.ac/blog/before-calling-ac-repair-queens. It explained why some problems look serious but actually start from very simple causes that are easy to misunderstand in older city apartments.
I agree that checking a few basic things can sometimes help identify an AC issue before calling a repair professional. Older apartments may have simple problems that can be easy to overlook. The neighbor’s experience is a good reminder to understand the basics first. For building owners and managers who also need reliable elevator services, I was impressed by the solutions offered by elevators companies, including support for maintenance and different elevator systems.