Air ducts are what carry both the cold air in the summer and warm air in the winter to your living space. Any “leaks” in the ducting will cause your HVAC system to lose efficiency which will cause the HVAC system to work harder and longer to bring the indoor temperature to where it needs to be.
It will affect your electricity and gas bills.
The HVAC ducting needs to be air-tight, all the way from the HVAC system to the duct register box or boot. We seal the joints to code.
The result will be a better performing HVAC system and lower energy bills.