The answer to 'my ductwork won't turn on' is that there could be several common causes, such as a tripped circuit breaker, a faulty thermostat, or a problem with the blower motor or fan. Symptoms may include no air coming out of the vents, the system not responding to the thermostat, or strange noises coming from the ductwork.
In many cases, the solution can be as simple as resetting a circuit breaker or replacing the thermostat batteries. However, if the issue is with the blower motor or other internal components, it's best to call in a professional HVAC technician to diagnose and repair the problem. Attempting to fix these issues yourself without the proper knowledge and equipment can be dangerous and may even cause further damage to the system.