The answer to 'my air duct sealing keeps shutting off' is that this issue is often caused by a problem with the thermostat, air filter, or ductwork. The thermostat may be malfunctioning and not properly regulating the temperature, causing the HVAC system to shut off prematurely. A clogged air filter can also restrict airflow and trigger the system to shut down. Additionally, leaks or blockages in the ductwork can disrupt airflow and lead to the system cycling on and off.
In many cases, this problem can be resolved with some basic troubleshooting and DIY maintenance. However, if the issue persists or you're unsure of the cause, it's best to call in a professional HVAC technician to diagnose and repair the problem properly.