As the months heat up, air conditioners across the nation are beginning to surge back to life. For two thirds of U.S. homes, these are part of their HVAC system; but what if your residence doesn’t have central air conditioning? Or perhaps you have a central unit but are loathe to turn it on and watch your energy bills skyrocket? As much as 5% of the nation’s electricity is used by air conditioners.
If you’re in the latter category of people with expensive central AC units, you could always upgrade to a more efficient model. High-efficiency ACs, when coupled with other activities for cooling your h