Free checks before you call anyone
Filter. A clogged filter chokes airflow, ices the coil and mimics half the faults on this page. Swap it; wait an hour.
Thermostat. Cooling mode, setpoint below room temperature, fresh batteries. Solves an embarrassing share of "broken AC" calls.
Breakers — once. Reset a tripped breaker one time. If it trips again, stop; repeated trips mean a real electrical fault, and resetting into it makes things worse.
Frozen coil? System off, fan on, let it thaw fully before any restart. Running a frozen system is how $250 problems become $2,500 ones.
Smoke, sparks or dangerous heat? Use the safety and after-hours checklist in our emergency AC repair guide before treating the problem as a routine service call.
Refrigerant work legally requires EPA 608 certification. And treat any bid to "just top off the freon" annually as a red flag — refrigerant doesn't get used up, it leaks, and the honest fix is the leak.