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Do You Know How to Find and Seal Air Leaks?

Do You Know How to Find and Seal Air Leaks?

Sealing air leaks is a tried and true way of making your home more energy efficient. It keeps your conditioned air from seeping out and keeps unconditioned air from infiltrating your home. Chances are, if you have a new home, it doesn’t yet require much in the way of air sealing. Over time, however, as houses settle and materials deteriorate, minute cracks and crevices will appear. As the years go by, these cracks could account for significant energy losses and higher utility bills than you need to be paying.

Read on for ways to seal leaks and promote superior energy efficiency in your home.

Finding Air Leaks

There are two basic ways to discover leaking air in your home. First, you can hire an energy auditor to perform a blower door test. This involves mounting a large fan in an exterior door frame, turning it on with all the windows and doors closed, and drawing out the home’s air and lowering the pressure. The auditor then walks around and tries to detect where air might be leaking by means of waving a smoke pencil. The auditor may also employ thermographic scanning, a method using an infrared camera to record warm and cool spots in the home.

You can also perform your own air leak check. Use the smoke pencil, or simply hold your hand next to places where air might be leaking. Some of the most common sites are:

  • Doors and windows
  • Recessed lighting
  • Electric plugs and switch plates
  • Corners where the attic meets the walls
  • Attic hatches
  • Holes in exterior walls for plumbing, wires and cables

Fixing Leaks

Fixing leaking air is fairly straightforward. Use weatherstripping, sealant or insulation to plug up any holes, cracks, and gaps you discover. Obtain fire-safe containers to place over recessed lighting in the attic. Add insulation to the attic floor so that it covers joists.

For more on finding and sealing air leaks, contact Elite Air. Our skilled Trenton heating and cooling professionals have served the entire Hamilton Township area for more than 25 years.


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