There are a few possibilities that a professional air conditioning contractor will consider if your air conditioner is not cooling your house:
Incorrect thermostat.
Blocked condenser unit.
Frozen evaporator coil, possibly from a dirty air filter.
Refrigerant leak.
Undersized AC unit.
With so many different possibilities, you’ll want an experienced professional to identify the issue and provide a surefire solution. Be sure to check that your air filter has been changed within the past few months, and if it has, give Clear the Air a call.