Windows by the Numbers

Every Energy Star Certified window is tested independently by the NFRC.  A sticker will appear on your new window with the results and these number can NOT be altered.  It is by far the best way to compare the performance of multiple windows.

The top 3 performance numbers to compare are:


Energy Star Minimum


Alliance Triple Glass

U-Value .30 or less (less is better) .27 .21
Air Leakage .30 or less (less is better) .06 .06
DP-Design Pressure more than 20 40 40

Subject to approved credit through Foundation Finance Company LLC and dealership acceptance. Terms and conditions may vary. Contact dealership prior to applying to discuss available offers. Dealership will provide terms and disclosures upon credit approval.

Alliance WNC Windows offers services in Ashville, NC to the following cities in Henderson and Buncombe Counties – Biltmore Forest, Black Mountain, Montreat, Weaverville, Woodfin, Avery Creek, Bent Creek, Fairview, Leicester, Royal Pines, Swannanoa, Barnardsville, Candler, Enka, Jupiter, Ridgecrest, Skyland, Balfour, Barker Heights, Bat Cave, East Flat Rock, Etowah, Flat Rock, Fletcher, Fruitland, Hendersonville, Horse Shoe, Laurel Park, Mills River, Mountain Home, Saluda, Tuxedo, Valley Hill, Zirconia