air conditioning systems

A power grid that thinks for itself
New Drywall (gypsum board) can save up to 40% on energy consumption of a building
Are There Alternatives to Conventional, Energy-Hogging Air Conditioners?
Haier Power Pad takes energy from shower water and returns it to hot water system
New heat pump could cut heating costs in cold climates
One of the world’s greenest skyscrapers approaches completion