Front Door Install storm doors at all entrances of the house.
Weather-strip and caulk around all entrance doors and windows to limit air leaks that could account for 15-30 percent of heating and cooling energy requirements.
Garage Keep the overhead door of an attached garage closed to block cold winds from infiltrating the connecting door between the house and garage.
Outdoor Lights Install photoelectric controls or timers to make sure that outdoor lighting is turned off during the day. If using energy-efficient light bulbs, make sure that they are compatible with the controls.
Porch Light Install energy-efficient lighting in the front porch light—one of the most-used lighting fixtures in a home. If your porch light is connected to a timer or photocell, make sure the new light bulbs are compatible with the controls.
Car A vehicle emits 12,100 pounds of CO2 per year on average. You can reduce your carbon footprint by combining trips and using mass transit, and walking or biking when possible. Also keep your car well-maintained to maximize its fuel efficiency, safety, and reliability. Schedule regular tune-ups, change the oil and filter every 3,000 to 5,000 miles, and make sure the tires are properly inflated.
Vehicles in the United States average 231 miles per week. There are many ways to reduce your weekly mileage and shrink your carbon footprint. Try carpooling, using public transportation, and combining errands.
To have a big impact, consider purchasing a hybrid car. A 4-cylinder hybrid with automatic transmission and 2-wheel drive emits nearly 40 percent less CO2 per mile than a sports utility vehicle with automatic transmission, an 8-cylinder gasoline engine, and 2-wheel drive.
Windows Double-glazed windows (two panes of glass separated by a sealed air space) cut heat transfer by 40-50 percent. In extremely cold regions, triple glazing could be economically justified.
Single-glazed windows should have storm windows. A wood or metal frame storm window provides a second thickness of glass and a layer of still air that reduces heat transmission markedly.