The answer to 'why is my AC blowing hot air' is that there are several common causes, such as a refrigerant leak, a malfunctioning compressor, or a blocked air filter. These issues can prevent the air conditioner from properly cooling the air, causing it to blow hot air instead.
Some key symptoms to look for include the air not feeling as cold as it should, the AC running constantly without cooling the home, and higher than normal energy bills. Solutions can range from a simple filter change to more complex repairs like recharging the refrigerant or replacing the compressor. If the issue is not easily identifiable or requires more extensive work, it's best to call in a professional HVAC technician to diagnose and fix the problem.