Many systems use the same ducts to distribute air cooled by an evaporator coil for air conditioning.

Covers must have openings at the bottom to admit cool air and at or near the top to distribute warm air.

A forced-air system is an efficient way to distribute warm or cool air to every room of your home.

The same ducts used by the air-conditioner in summer distribute hot air in winter.

Further they criticised the pits ventilation system, which they concluded did not manage to properly distribute air throughout all the pit.

This movement of air sets up vertical currents that will distribute heated air throughout the room.

Thus, the same motor, blower, and ductwork used for heating are used to distribute cool air from the air conditioning system.

Much of the energy savings is also attributed to the lower amount of energy required to pump water as opposed to distribute air with fans.

Fan-based ionizers clean and distribute air much faster.

Central heating by distributing hot air from a furnace in the basement.