If less hot air seeps in, and less cooled air seeps out- the less work your unit has to do to keep the temperature regulated!

Air conditioner in refrigeration (hot) operation unit within the time from an airtight room removed from the heat, the statutory measurement unit W (watts).

In this paper, a solar desalination unit is designed based on humidification-dehumidification cycle by using hot air which comes from a solar air collector.