Your home's indoor air isn't as clean as outdoor air. Home ventilation using the stack effect insures the air inside your home is exchanged with outside air.
Here's an example of the stack effect that's easier to understand. You know when you light a fireplace smoke is created. The smoke goes up the chimney based on the stack effect, unless you've forgotten to open the damper which we've all done. You know that warm air (with the smoke) rises from air buoyancy, because warm air is lighter. [Learn More…]