Solatube recently announced upgrades to two models of their tubular daylighting devices (tubular skylights).  The upgrades qualify their products for a 30% Federal Tax Credit under the American Recovery and Reinvestment Act.  The two qualifying products are the 160DSe and the 290DSe.  Both are improvements upon the 160DS (the one I installed in my home), and the 290DS.

Solatube is the first company with tubular daylighting devices that exceed low Solar Heat Gain Coefficients (SHGC), and U-Factor ratings specified in the federal Act.     This is why their products qualify for the Federal tax credit!

What are SHGC and U-Factor you ask?  These ratings come from the National Fenestration Rating Council. We demystify both terms in detail for you in a previous article here on GetWithGreen.  Essentially, a low Solar Heat Gain Coefficient means that your window or tubular device will block heat from sunlight.  A low U-Factor means that heat has a difficult time escaping.  These ratings matter to you because the tube from these skylights runs through your attic.  You want to prevent as much heat from coming in during the summer, and limit the amount of heat lost during the winter.    The lower these ratings, the less your attic heats, the more energy you save!

We have much more information on tubular skylight or daylighting systems here on GetWithGreen.com.  Read this related article:

See more on Daylighting Systems from GetWithGreen.com

For those of you striving for LEED certification in your remodel, tubular daylighting products/skylights also satisfy the daylighting credit of the certification process.

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Whether you select Pella, Andersen, Marvin, JELD-WEN, or another brand, windows are almost a certainty in your home remodel project.  Did you know there are rebates and incentive plans in many areas of the country?

Window rebates are most often paid out based on the U-factor or Solar Heat Gain Coefficient by your power or Utility company.  Many times these rebates have a budget, and once they are used up they are gone – so submit yours as soon as you can if there is a program in your area.

GetWithGreen searched the web and found you a fairly comprehensive list of rebates.  Click here for the .pdf list of Utility Programs that Offer Incentives and Rebates for Energy Efficient Windows

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At GetWithGreen.com we want to start helping to demystify the terminology around windows.   If you are looking at new windows for your remodel then it is important for you to understand how to read the spec sheets when it comes to efficiency.  Window installer John Rocco gives you this overview…

With so many homeowners in the market for more energy efficient windows and doors for their home, I thought I would use this week?s article to cover the more common terms used to describe a window?s ability to insulate your home from the elements. There is an organization called The National Fenestration Rating Council (NFRC). Their purpose is to test each window manufacturer?s product to independently verify the ratings for each test administered. So, let?s discuss each test and what it means.

First, there is the U-Factor. This number represents the rate that heat escapes through the window. Therefore, the lower the U-Factor, the better the window. Most vinyl replacement windows with standard, dual pane glass, have a U-Factor around .5. When you add LowE glass in place of the standard clear glass, the U-Factor comes down below .4. By replacing the air between the panes of glass with Argon or Krypton gas, the U-Factor can be reduced to around .3. The Government?s energy star program requires a window to have a U-Factor below a certain number in order to be energy star rated. You need to find out what that rating is in your particular area of the country. You can start by going to the energy star website. In areas of the country where rebates are given for installing energy star rated products in your home, you will only receive the rebate by proving that your windows have a U-Factor less than the maximum allowed. That proof comes from the manufacturer?s NFRC label affixed to each window.

Another test is called Solar Heat Gain Coefficient (SHGC). The SHGC measures a window?s rate of heat penetration from outside. The lower the number, the better resistance there is to heat getting into the house from outside. There are also air and water infiltration tests. The air test actually tests how much air is able to pass through the window from outside to inside. Therefore, you want a low number. Typically, a .30 is the maximum allowable rate of air infiltration. Water infiltration tests the amount of water and pressure the window is able to resist. Therefore, the higher rating is better for this test. Frankly, i wish they would just rate all tests on a 1 to 10 scale, with 10 being best. Then, you wouldn?t get confused trying to remember which tests should have high numbers and which ones should have low numbers. You can get more information on window testing by going to the NFRC Website.

John Rocco has been installing replacement windows since 1978. 

To learn more, visit How To Install Windows

Related Articles on GetWithGreen:

- Pella discusses why they think they are eco-friendly
- Pella drastically reduces waste to landfills
- Are Energy Star Windows right for your remodel?
- JD Powers rates top windows

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