Combination System:

Positive Pressure and Heat Transfer

This system takes warmer air from the ceiling space and pushes it through the house which raises the air pressure in the house slightly while  pushing out moist air which causes dampness and condensation.

When you have a heat source operating in the home, a valve allows the system to double as a heat transfer system to distribute that heat through your home.

This system works very well in conjunction with heat pumps.