The NFRC is a non-profit organization that administers a uniform, independent rating and labeling system for the energy performance of windows. The Department of Energys ENERGY STAR program relies on NFRC tests results to determine whether a window can qualify for an ENERGY STAR label. All ENERGY STAR labeled windows and skylights qualify for tax credit.
Look for manufactures with many windows that have a U-Factor less than or equal to .30 (The Lower the U Factor the better the window insulates). Window manufactures with few tested windows could lead to problems getting your tax credit.
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*Ply Gem Contractor, Pro or Premiums Series windows only. Offer is for HPMax triple pane glass. Valid only for homeowner replacement customers who purchase APCO products for their own residence and have them installed by APCO. Not valid with any other offer or promotion. Prior sales excluded. Offer not valid when purchasing three (3) or less windows. APCO reserves the right to terminate this promotion at any time. Other restrictions may apply.