Storm windows reduce air leakage by thirty percent
December 27, 2011
Last year, Historic New England implemented a number of small measures to increase energy efficiency at Pierce House, and recent tests show that the improvements have paid off.
Air leakage is a major factor in energy waste. Cold air infiltrates a house and causes the heating system to expend more energy to keep the house warm. In order to reduce air leakage, Historic New England staff re-pointed the foundation of Pierce House and implemented minor, reversible repairs to decrease the flow of air through the many nooks and crannies found in an old house. We also installed interior storm windows.
Repeating the same blower door tests that were performed before the project began, we determined that our simple methods reduced air leakage at Pierce House by thirty percent. Although we do not have a full year's worth of data, we are excited about the preliminary results and what they tell us about simple techniques that homeowners can use to reap big results. Learn more about our efforts to increase energy efficiency at our historic properties.