Something is wrong: your trusty air conditioning system, which usually has no trouble managing cool temperatures in your home during the summer, is falling down on the job. The house is warmer than it should be, or there are hot spots in the rooms, or the AC keeps shutting down too early.
There are several possible sources for these troubles, and it’s important to call on professionals to find out what it is when basic troubleshooting doesn’t solve them. But the problem may not be in the AC. Often, these cooling issues stem from the thermostat, as we’ll explain below.