Insulate anything that uses energy to stay a different temperature from its environment. You can buy insulation from hardware stores and in many varieties.
• Keep your water heater insulated to save up to 1,000 lbs. of carbon dioxide a year. Avoid using units fitted with continuous pilot lights, and you will save 200 kilograms of greenhouse gas emissions yearly.
• Re-insulate your whole home to reduce heating and cooling costs. If your insulation is old or inefficient, replace it. Consider the attic, crawlspaces, basement, walls, and ceiling. If you have awkward spaces, be aware that cellulose or fibreglass insulation can be blown in by a professional contractor.
• Weather strip your home. Weather strip your doorways, windows and HVAC system. This could save up to 1,700 lbs. of carbon a year.