These numbers have been in place for many years, last updated 2016 and represented a great performing window, with great savings.
You Can compare the current ratings to the left with the upcoming changes in Oct 2023 with Version 7. The focus seems to be on the reduction of U value which would benefit the colder part of the country, but doesn't benefit the southern portion much as they many more cooling days.
This represents the new changes coming targeting primariy reducing the U value of windows, which helps to retain heat INSIDE your home, lets radiant heat in through the windows and then blocks it from getting out.
Find out what climate zone you are in so you can get the optimal windows for your home!
According to the Canadian Government up to 25% of total house heat loss can be attributed to windows and doors.
According to the U.S Government about 30% of heat loss goes out your windows and doors.
According to U.S Energy.gov 76% of the sunlight that hits your regular double pane windows turns into heat. drastically affecting your cooling cost and comfort
As you can see above, southern climates spend more money on cooling and therefore need emphasis on designs that enhance the Solar Heat Gain Coefficient much more so than U values. Huge savings can be seen by these enhancements.
When you go to a pre-existing home the savings percentage is greatly enhanced as it is based solely on windows, but the $$$ savings is even bigger!
The Efficient Windows Collaborative is powered by the National Fenestration Rating Council, a nonprofit organization that certifies the energy-performance of windows, doors, and skylights—also called fenestration products. NFRC’s certification program provides fair, accurate, and credible energy-efficiency ratings for fenestration products that helps consumers make informed purchase decisions.
What can I claim on New Most efficient Windows and receive my tax credit in 2023?
Simplified you can take a credit for 30% of your job with a maximum of $600, SO what is available is $600 credit for upgrading your purchase to Windows that qualify as "Most Efficient" under the new 2023 Energy Star Program. These windows however will be much, much, much more expensive and that $600 won't go very far in immediate savings or long term payback on energy consumption.
Heating cost will escalate quickly in a pre-existing home, as many things contribute to energy savings. Insulation, attic, weatherization and more.
Window Information
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