The Washington-based Alliance to Save Energy suggests that increasing the energy efficiency of your home can produce three benefits at once -- cut costs, reduce air pollution and increase home comfort. Here are some of the alliance's ideas:
-- Get a professional ''tuneup'' for your furnace every year. Clean air filters once a month.
-- When replacing appliances, including heating and air conditioning units, make sure the new products are energy efficient.
-- Consider adding insulation in attics or above ceilings. Make sure air ducts are insulated, too.
-- Seal leaks around windows and doors with weather stripping or caulking.
-- Consider buying a ''programmable'' thermostat, which can be set to automatically reduce temperatures by night and raise them by day.
-- Get some help from the sun -- keep blinds open by day, close them at night.
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