via treehugger.com
The American NREL has developed a aircon system which is 50-90% more efficient than the current top-performing units. If aircon is unavoidable, it's a good idea to try to make it as efficient as possible.
The American NREL has developed a aircon system which is 50-90% more efficient than the current top-performing units. If aircon is unavoidable, it's a good idea to try to make it as efficient as possible.