01437nas a2200157   4500008004100000050001500041245009200056210006900148260003100217520085700248100002001105700002001125700002501145700002101170856008801191       1996                        eng d  aLBNL-3969200aThe National Energy Requirements of Residential Windows in the U.S.: Today and Tomorrow0 aNational Energy Requirements of Residential Windows in the US To  aPacific Grove, CAc08/19963 a<p>This paper describes an end-use analysis of the national energy requirements of U.S. residential window technologies. We estimate that the current U.S. stock of 19 billion square feet of residential windows is responsible for 1.7 quadrillion BTUs (or quads) per year of energy use - 1.3 quads of heating and 0.4 quads of cooling energy - which represents about 2% of total U.S. energy consumption. We show that national energy use due to windows could be reduced by 25% by the year 2010 through accelerated adoption of currently available, advanced window technologies such as low-e and solar control low-e coatings, vinyl and wood frames, and superwindows. We evaluate the economics of the technologies regionally, considering both climatic and energy price variations, and find that the technologies would be cost effective for most consumers.</p>1 aFrost, Karl, J.1 aEto, Joseph, H.1 aArasteh, Dariush, K.1 aYazdanian, Mehry  uhttp://aceee.org/files/proceedings/1996/data/papers/SS96_Panel10_Paper07.pdf#page=1