The answer to 'my HVAC system keeps shutting off' is that there are several common causes, including a clogged air filter, low refrigerant levels, a malfunctioning thermostat, or a problem with the compressor or other components. Symptoms can include the system cycling on and off frequently, poor airflow, or uneven temperatures throughout your home.
If your HVAC system is shutting off repeatedly, it's important to diagnose and address the underlying issue. Some minor problems like a dirty air filter can often be fixed with DIY maintenance, but more complex issues like refrigerant leaks or compressor failures usually require a professional HVAC technician to repair.