The answer to 'my HVAC repair keeps shutting off' is that there are several common causes, including a tripped circuit breaker, a clogged air filter, low refrigerant levels, or a problem with the thermostat or control board. The symptoms may include the system turning on and off repeatedly, poor airflow, or uneven heating/cooling.
If the issue is a tripped circuit breaker or a clogged air filter, those are relatively simple DIY fixes. However, problems with refrigerant levels, the thermostat, or the control board will likely require a professional HVAC technician to diagnose and repair. It's important not to attempt DIY repairs on the refrigerant system or electrical components, as that can be dangerous. For any persistent or complex issues, it's best to call in a qualified HVAC technician to properly inspect and repair the system.