An interesting post in HOME ENERGY MAGAZINE’s blog on the use of side tracks in energy testing, and the relative R-value of the shades with and without side tracks can be found at this link. The data was published in October 2010, though collected over a three-week period during February and March.
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And now on to your questions:
Q: I’m confused about the side tracks — as the “fin” in the track is not in the direct center of the track — which is placed closer to the room?
A: Indeed, the placement of the side tracks is with the “fin” closer to the room. This close-up of the one side of the track will help illustrate what the photograph may not:
This is the same side (left side); note the notching at the top, which will accommodate the headrail. The magnet is shown at the back; the optional “Z” strip is the gray area to the right, behind the “fin”. The notch would fit up behind the head rail; the magnetic strip adheres the unit to the magnet already attached to the window’s trim. The shade rides on the “fin”, creating a light-blocking seal at each side of the shade. And what blocks out the light, will also block out winter’s cold air and summer’s hot air.
Q: What is the tax credit for 2011?
A: Comfortex has posted new information for the current tax year (2011). Shades purchased between 1 January 2011 and 31 December 2011 are eligible for a tax credit of 10% up to $500 (note this is a lifetime limitation and contingent on energy credits taken in prior years). To see this year’s form click here.
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