Leaks in the forced air system in
your home can account for as much as 25% of the energy loss in your home
A fan is connected to an outlet
in the HVAC system in your home as in the image above.
The fan then blows air into the
duct system raising the pressure inside the duct system.
The better sealed the duct system
is, the less amount of air is required to make a change in the pressure inside
the duct system.