The answer to 'HVAC repair blowing cold air' is that there are several common causes, including a refrigerant leak, a problem with the compressor, or a malfunctioning thermostat. Symptoms may include the system blowing cold air inconsistently or not reaching the set temperature. Solutions can range from simple DIY fixes to more complex professional repairs.
If the system is blowing cold air but not reaching the desired temperature, it could be due to a refrigerant leak. This requires a professional HVAC technician to properly diagnose and recharge the refrigerant. A problem with the compressor, such as a failed capacitor or motor, would also cause cold air issues and typically needs replacement by a pro. Lastly, a faulty thermostat can prevent the system from properly regulating temperature, which may be a DIY fix if you're comfortable working with electrical components.