R-5 Window Program Now Accepting Manufacturer Proposals

January 5, 2010

The Department of Energy's Highly Insulating R-5 Window and Low-E Storm Window Volume Purchase Program is now seeking proposals from manufacturers interested in participating.  Pacific Northwest National Laboratory, which is managing the program for DOE, issued a request for proposal on December 16, 2009, along with specifications, a sample memorandum of understanding, bid sheets, and other documents. The deadline for submissions is February 19.

More details and downloads of all related documents are available from the R-5 window program Web site. Final specifications for the program include U-factors of .20 or less for fixed windows and .22 or less for operable units. Additionally, it calls for an air leakage rate of 0.30 cfm/ft² or less. The specifications also establish a 20 year warranty for the glass package and a 10 year warranty for the window.

Energy performance ratings must be certified by the National Fenestration Rating Council and products must also be certified as meeting the R-25 performance grade requirements established under the AAMA/WDMA/CSA 101/I.S.2/A440 (NAFS) standard for windows, doors and skylights (05 or later version).

The initiative, in which DOE works to identify and organize a potential buyer base in both the public and private sector, is designed to help commercialize such products. Products from manufacturers choosing to participate in the program and that meet the requirements will be listed on the R-5 windows Web site, from which potential buyer groups to choose.