The answer to 'why is my air conditioner not cooling' is that there could be several common causes, such as a refrigerant leak, a dirty air filter, or a problem with the compressor. Symptoms may include the air not feeling as cold as it should, the unit running constantly, or warm air blowing from the vents.
Some potential solutions include checking and replacing the air filter, cleaning the condenser coils, and ensuring the refrigerant level is correct. However, many air conditioning issues require the expertise of a professional HVAC technician, especially if the problem is with the compressor or there is a refrigerant leak. It's generally best to call a qualified technician to diagnose and repair the issue to ensure the system is functioning properly and safely.