Duct leakage associated with forced air HVAC systems has proven to be one of the largest energy wasters in our industry. Just like many things in the HVAC business, the devil is in the details in regards to duct sealing. Depending on who you talk to, you could get a number of different answers on the proper way to seal a duct system. There are a lot of different tools, materials, methods, and testing that contractors are using to seal ducts.
What gear do I really need to seal ducts?
The type of sealant you plan on using for patching all those holes is going to have a large impact on the gear you will need. For UL 181 rated tapes, you're going to need some good rags for cleaning the duct material off, and a squeegee for smoothing out those taped joints.