“EPA estimates that homeowners can typically save up to 20% of heating and cooling costs (or up to 10% of total energy costs) by air sealing their homes
and adding insulation in attics, floors over crawl spaces, and accessible basement rim joists.”
One place to look for air leaks is in the heating and air-conditioning (also known as HVAC) ducts in your home (or Condo.) Air leaks make your HVAC system use more fuel and work harder to do the job it’s supposed to do. And that can cost you money. Especially if those air leaks are in the unheated/uncooled areas of your home such as a basement, or in my case, in an unheated utility room.
There are generally two places where air leaks occur and that you need to seal: