Now is a great time to replace your home’s windows. The federal government and local utility companies are making it even more tempting to finally make those changes you’ve been thinking about. Rebates and tax credits allow you to save up to $2000.
How much energy will you save?
It will vary, but a typical home can save $400-500 per year by replacing single pane or double pane aluminum windows.
Are triple pane windows better than double pane?
Several companies offer triple pane windows, and more will be doing so as they jump on the bandwagon. Essentially, you are gaining in efficiency over a double pane window. How much, and is it worth it?
Let’s compare two same size windows by a major manufacturer:
Double pane: U factor.30, SHGC Factor.21, VLT factor.49
Triple pane: U factor.30, SHGC Factor.19, VLT factor.34
The major difference is in VLT or Visible Light Transmittance. The lower number is better for efficiency, but a lower number also means less light in the room. In this example, roughly 30% less. The difference in price for the windows is about 10%.
It’s our experience that in most cases the cost difference with triple pane windows is not advantageous. It began as a sales tool, and now everyone is starting to do it in order to compete. If you have a home with a lot of square footage of glass, it might be a good idea to use the triple pane windows on big windowed areas, especially in south or west facing areas. In a normal bedroom with one or two windows, we doubt if you would notice a difference in energy savings and heat loss in the room between double pane and triple pane.
What is required for the tax credits and rebates?
Requirements vary for different regions of the country. For the greater Seattle area the U Factor of the window needs to be.30 or less, and the SHGC Factor needs to be.30 or less. These are efficiency measurements of the windows. All window manufacturers make windows that meet these requirements, but not all their windows do. It’s important to ask for, and get, the windows that meet the requirements. Not all Energy Star rated windows meet these requirements. So do your homework when selecting your windows.
If your local utility company offers rebates, find out its requirements. For example, Puget Sound Energy (PSE) requires the existing windows (the ones you are replacing) to be single pane or double pane aluminum. The federal tax credit doesn’t have a requirement about what type of window the existing windows need to be. PSE does not include windows in new construction or an addition. The Feds allow the credit for adding a new window, such as in an addition. The installation needs to be done in your principal residence.
Do-it-yourself installations do not qualify. A licensed contractor must do the job.
PSE Rebate: Fill out a simple form online and submit it with a copy of the receipt from the contractor. You will receive a check in the mail within 30-60 days.
Federal Tax Credit: Fill out Form 5695 when filing your income taxes.
Each window will have a sticker displaying the NFRC certification showing that the window qualifies for the efficiency requirements. You should keep one of these stickers for back-up documentation, if ever needed.
What are the credits and rebates and their limits?
At this time, the rebates/credits are only available through 2010. There has been no indication that they will be extended. If you used any of your federal tax credit for energy savings in 2009, only the balance up to $1500 is allowed in 2010.
PSE Rebate: $6 per square foot of window up to $500.
Federal Tax Credit: 30% of the cost of the windows up to $1500.
Installation is not included in the rebate/credit calculations.
Example: You purchase $5000 of windows and they are installed. The square footage of the windows is 85 square feet.
PSE Rebate: $500 $6 x 85 = $510
Federal Tax Credit: $1500 30% of $5000 = $1500
Total Savings: $2000
Conclusion
- Work with a good contractor who will provide the options you require. There are many windows that are good quality and will qualify.
- Don’t succumb to high pressure sales tactics and special, one time offers.
- Look for an installation that is turnkey and when complete looks like the windows were always there.
- Apply for your rebates and credits and enjoy your savings!
Greg Kiper is owner of Double Tall Ltd. and Double Tall Construction, a home remodeling contractor in the greater Seattle, WA, area. His company provides complete turnkey service – consult, design and construction – and focuses on high quality workmanship, excellent communication and top-notch service. http://www.DoubleTallLtd.com.