tisdag 23 december 2014

VENTILATION STRATEGIES

VENTILATION STRATEGIES

There are three basic ventilation strategies—natural ventilation, spot ventilation, and whole-house ventilation.
NATURAL VENTILATION
Natural ventilation is the uncontrolled air movement in and out of the cracks and small holes in a home. In the past, this air leakage usually diluted air pollutants enough to maintain adequate indoor air quality. Today, we are sealing those cracks and holes to make our homes more energy-efficient, and after a home is properly air sealed, ventilation is necessary to maintain a healthy and comfortable indoor environment. Opening windows and doors also provides natural ventilation, but many people keep their homes closed up because they use central heating and cooling systems year-round

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