The answer to 'HVAC system blowing hot air' is that there are several common causes, including a refrigerant leak, a problem with the compressor, or issues with the thermostat or air filter. Symptoms may include the air coming out of the vents feeling warm, the system running constantly, and higher energy bills. Solutions can range from simple DIY fixes like changing the air filter to more complex repairs that require a professional HVAC technician.
If the HVAC system is blowing hot air, the first step is to check the air filter and replace it if it's dirty. A clogged air filter can restrict airflow and cause the system to overheat. You can also try adjusting the thermostat to see if that resolves the issue. However, if the problem persists or you're not comfortable troubleshooting the system, it's best to call a licensed HVAC technician to diagnose and repair the issue.