Following-up on last month’s column about insulation, I thought it would be helpful to discuss another important step to keep heated air in and cold air out as we move closer to fall.

Air leaks, some caused by openings as small as a crack, can account for over 10 percent of a home’s energy bill. These leaks can be hidden throughout the home, allowing heated air to continuously escape.

Air leaks typically come from window and door frames, electrical outlets and switches, plumbing and utility access holes, recessed lighting, dropped ceilings, furnace flues, sill plates and attic entrances.

The easiest way to find sources of air leaks is to inspect your home with a checklist of the locations listed above. Sometimes a leak is obvious because you can feel a cold draft coming from the location. Another good way to check for leaks is to hold a lit incense stick next to locations where you suspect an opening to the outside. If the smoke stream travels horizontally, you’ve found an air leak that will need caulking, sealing or weather-stripping.

Some air leaks can be fixed quickly and inexpensively, while others may require the help of a qualified contractor. Either way, today’s energy prices can mean a short payback time.

The easiest leaks to fix are those caused by electrical outlets and damaged or inadequate caulking. Inexpensive, pre-cut rubber gaskets are available to install behind the covers of light switches and outlets. A tube of caulking may be all that’s needed to stop leaks around window and door frames. The same is true where plumbing, ductwork and wiring go through exterior walls, floors, ceilings and soffits.

For more energy saving tips and information, click on "Energy Efficiency" in the left-hand side menu above. In my next column, I’ll discuss how upgrading your heating system to a more efficient model can save you money on heating costs, now and into the future.