In many buildings the cooling loads have increased from what was anticipated when the building was originally designed and built. This is often due to the use of more heat-producing electronic equipment within the building such as computers and equipment in offices, medical equipment in hospitals, etc. The old induction units were not sized for these increased cooling loads and often cannot now adequately cool the rooms.

If increasing induction unit cooling capacities within the same unit space constraints is an objective the new induction units can be selected at inlet static pressures and primary airflows close to the original conditions, while providing more cooling capacity through the new induction unit's water coil. As there is normally excess water chiller cooling capacity available in most buildings, the room temperatures can now be maintained at acceptable levels.