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A first look
What new glass is worth.
A first look at how better performing windows may affect heating and cooling costs in a Southern California home. Adjust the assumptions below to compare.
Estimated annual heating and cooling savings
$259
Planning estimate only. Actual energy use and savings vary based on climate, home design, window area and orientation, shading, HVAC system, utility rates, installation conditions, air leakage, and the specific performance of the products selected.
Estimate methodology informed by NFRC and Lawrence Berkeley National Laboratory residential window energy modeling. Whole-product U-factor and SHGC. Coastal San Diego.