The year 2009 carried tax credits for energy improvements and if you are filling out your tax forms now, be sure you account for any home improvements that qualify under the energy star program.
Windows, Skylights and Doors all qualified for savings in 2009 as long as they met the programs minimum U-factor and SHGC factor ratings. The U-factor ratings are broken down into four zones that run horizontally across the nation. There is a North Zone, a North Central, South Central, and South Zones.
The U-Factor measures how fast heat transfers from one side of the unit to the other. A lower U-Factor number means a higher resistance to temperature change that comes from conduction and long-wave infrared radiation. The toughest ratings are for the most northern zones.
The Solar Heat Gain Coefficient (SHGC) deals with solar heat gain. It’s a ratio of solar heat gain to the solar radiation applied. In short, it determines how much heat comes into the home when the sun is shining on the product. The most stringent requirements are in the southern zones.
More information can be found at www.energystar.gov
JOHN // Jul 21, 2010 at 1:50 am
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