Abstract: An air conditioning assembly for maintaining a preferred temperature range within the interior of a building structure such as a commercial, industrial or office facility wherein such temperature maintenance becomes efficient and cost effective based in part on the return and supply of previously conditioned air from the interior of the building structure to an intake of the air conditioning assembly. The air intake from the interior of the building is selectively chosen from a first zone where warmer air is collected depending upon whether the air conditioning assembly is in a heating or cooling mode. The subject process thereby reduces the amount of energy wasted in previously heating or cooling the conditioned air supplied to the building interior.

Abstract: An air conditioning assembly for maintaining a preferred temperature range within the interior of a building structure such as a commercial, industrial or office facility wherein such temperature maintenance becomes efficient and cost effective based in part on the return and supply of previously conditioned air from the interior of the building structure to an intake of the air conditioning assembly. The air taken from the interior of the building is selectively chosen from a first zone where warmer air is collected depending upon whether the air conditioning assembly is in a heating or cooling mode. The subject process thereby reduces the amount of energy wasted in previously heating or cooling the conditioned air supplied to the building interior.