The stack effect or chimney effect is the movement of air into and out of buildings through unsealed openings, chimneys, flue-gas stacks, or other purposefully designed openings or containers, …

Like wind, the stack effect can move large volumes of air through a building envelope. In the winter, the warm air in a heated building is lighter (less dense) than the cold air outside the building; that warm …

Dec 23, 2019 · Stack effect, also called chimney effect, drives airflow through buildings. Controlling air movement into and through a building can increase energy efficiency and save money.

Jun 13, 2025 · The Stack Effect is a phenomenon that occurs in buildings where the difference in air pressure between the inside and outside environments causes air to move through the structure. …

Jul 14, 2022 · What Is the Stack Effect? The Stack Effect, also known as the Chimney Effect, refers to the movement of air inside a building or a home that is not properly sealed or is inadequately …

Oct 21, 2023 · In cold climates, warm indoor air rises and exits from the upper parts of the building, pulling in colder air from outdoors through lower areas, causing a natural 'chimney' or 'stack' effect. …

This pressure difference that pushes the hot gas up the flue gas stack or the chimney is the ‘chimney or stack effect’. You can feel the effect if you stand near the doors or openings at the bottom of a stack …

Aug 1, 2025 · Warm air naturally rises inside a home, creating air movement that can influence indoor comfort, energy efficiency, and moisture levels. This process is called the stack effect. This airflow …

May 7, 2024 · The stack effect is most pronounced in the winter when indoor and outdoor temperatures are at their greatest difference. Warm air inside the crawl space is sucked up throughout the home, …

The stack effect is a cyclical flow of air driven by differences between indoor and outdoor air densities and temperatures. There are three forces that move air through a house: HVAC equipment, wind, …