A considerable amount of heat transfers through windows. If you have single-pane windows, consider doing the following:
• Tighten and weather-strip your old windows and then add storm windows.
• Replace your old single-glazed windows with new double-glazed windows.
• In colder climates “low-e” coatings on glass can help reduce heat loss through windows.
• In hot climates, consider adding solar screening to west-facing windows that catch a lot of heating late in the day. Solar screening is sold at many home improvement stores.
Air that transfers in and out of homes through cracks, crevices and holes can increase energy consumption. Here are some helpful tips to avoid air infiltration:
• Seal around pipe penetrations coming through walls.
• During hot and cold weather, ensure windows are closed tightly and locked.
• Ensure weather-stripping around doors and windows is tight.
• When your fireplace is not operating, its flue should be closed tightly, with a sign hanging from the flue handle warning it is closed.
• Check the ceiling behind the cornice of built-in bookshelves for holes cut during construction.
• Drop-down, disappearing stairways should fit tightly into the ceiling and be carefully weather-stripped.
• Whole-house attic fans should be sealed tightly during the winter.
• Make sure your outside dryer vent door closes when the dryer is not in use. This requires cleaning away lint accumulation periodically