Chromasun is introducing a new rooftop solar air conditioning unit to help lower energy costs. The unit follows the sun during the day to get maximum solar power and has the ability to draw in cool air at night.

The Solar AC unit will work best in sunny, dry climates. The cons to this is that it might take longer to cool your home than a normal AC unit. This system has a 75% efficiency compared to normal solar cells with only 23% efficiency. The solar cooling unit will measure 3m x 1.3m. Chromasun’s solar cooling unit should be available sometime in 2010.