When it comes to sealing air ducts, the most reliable option is to use putty sealant. This sticky material hardens after being applied to the ducts, making it much more effective than any adhesive tape. If you are a DIY enthusiast, you can buy putty, clean the outside of the air ducts, and apply the sealant. However, if you want the ducts in your air conditioning system to look neat after applying the putty sealant, it is recommended that you wrap a roll of painter's tape completely around each side of the dripping area. If you suspect that your ducts are leaking, then you should consider sealing them yourself or hiring an HVAC technician.
The three ways to seal ducts are tin tape (not adhesive tape), putty sealant, and Aeroseal duct sealing. Tin tape is not as effective as putty sealant, but it is easier to apply. Aeroseal duct sealing is a single point process that requires the help of an HVAC expert. This process involves injecting a liquid rubber sealant throughout the duct system. When it comes to sealing air ducts, it is essential to have the help of an HVAC specialist.
They will be able to properly and thoroughly clean the surface of the air duct and place a strip of aluminum adhesive tape over the leak. If you want to save time and money in the long run, hiring a professional is your best option. They will be able to identify any gaps in the sheet metal or other accessible ducts and make sure that all connections are properly sealed. Having your ducts properly sealed will help you balance your home's air temperature and improve air quality. It will also help you save energy during winter and summer by preventing air from escaping through any leaks.
In addition, if your ducts are located in spaces filled with dust or dirt, having them sealed will prevent those contaminants from entering the system and being distributed throughout the house.