The initial move to improve air-conditioning that will not entail any additional cost is to utilize high efficiency packaged units. These are actually standard air-condition but with the most added features and more capable units. The variable refrigerant volume systems take advantage of varying loads in a building by using a common refrigerant loop.

The thermal energy storage utilizes small ice tanks to store ice made during the night and runs water through the ice during the day. The indirect evaporative cooling sprays water into the air as it stays contained in its own system and cools through a heat exchanger.