Most homeowners are aware that air leaks into their houses through what seem to be small openings around doors and window frames and through fireplaces and chimneys.
Air also enters the living space from other unheated parts of the house, such as attics, basements, or crawl spaces.
Most homeowners are aware that air leaks into their houses through what seem to be small openings around doors and window frames and through fireplaces and chimneys.