You may find instructions for DIY ductwork repair or replacement. However, we do not recommend this for the general homeowner. Air ducts are just too important to mess up. If they are not repaired or replaced correctly, they can cause big problems for your HVAC system.
A bad ductwork job means a poorly functioning HVAC system. This, in turn, costs you money in energy bills. It’s not worth the risk. Make sure you always have a professional help you with any ductwork repair or replacement services.