• Seal air leaks around your home. A typical family spends about a third of its annual heating and cooling costs on air that leaks into or out of the house through unintended gaps and cracks.
• Insulate around recessed lights. Most recessed lights have vents that open into the attic; a direct route for heated or cooled air to escape. An airtight baffle is a quick fix.
• In the attic, check for stud cavities that are open. If they are, seal them up with unfaced fiberglass insulation.
• Close gaps around flues and chimneys. Building codes require that wood framing be kept at least one inch from metal flues, but that creates gaps where air can flow through. Cover gaps with aluminum flashing cut to fit and sealed into place with high temperature silicone caulk.
• Weatherstrip the attic access door. Seal it by caulking between the stair frame and the rough opening or by installing foam weatherstripping around the perimeter of the hatch opening.
• Apply foam to the medium sized gaps of plumbing pipes and vents. For skinny gaps, caulk makes the best filler for openings less than 1/4 inch, such as those cut around electrical boxes.
• Tighten up around windows and doors. The most significant drafts tend to occur around windows and doors. Caulking and adding new weatherstripping will help seal them up. If a draft comes in at the bottom of a door, install a new door sweep.

Now you can start saving money and enjoy a more comfortable home!