Adhesive tape (or rather, duct tape) is a faster and relatively easier solution to the problems of leaks in air ducts. This option is less complicated and can create a strong hermetic seal. Both putty sealant and aluminum foil tape are good options for sealing air ducts. Despite the name “dust tape”, never seal air ducts with adhesive tape.
It just doesn't hold up. When it comes to adhesive tape, you have several options, including aluminum foil, metal, fabric, and polyethylene. The variety of adhesive tapes available can make it difficult to choose the right product. Remember that you need a permanent option that can withstand strong air pressure and prolonged exposure to hot and cold temperatures. Avoid the common mistake of choosing duct tape when you really need HVAC tape.
Tape or sealant For some plumbing and HVAC projects, adhesive tape may not be the best option. In certain cases, the use of a sealant or putty can provide a stronger, more durable, and stronger solution than adhesive tape. The disadvantage of sealant and putty is that they can be messy and difficult to use, making them much less practical than adhesive tape. The only options for HVAC ducts should be putty or aluminum tape.
Although the name of this product makes it perfect for the job at hand, never seal ducts with adhesive tape. Adhesive tape is not approved for use on ducts and, although it works great for a variety of heavy projects, it doesn't withstand the conditions of an air conditioning system.
