As building materials and methods become better at sealing air leaks, the question arises, “How tight is too tight?” In terms of energy efficiency, one cannot build too tightly. Reducing air leakage is critical to lowering heating and cooling energy consumption.
The University of Pennsylvania’s advocacy of sustainable design extends from LEED ratings targets for all new building projects to collaborative efforts between the Division of Facilities and Real Estate Services, the campus community and the City of Philadelphia.
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