Which of the following is a characteristic of negative ventilation?

Negative ventilation is characterized by the process of exhausting air from a home, creating a difference in air pressure that can lead to the infusion of outside air. This method typically involves the use of exhaust fans that push the indoor air out, which, in turn, can draw in air from outside through any available leaks or openings in the building envelope.

This mechanism is primarily used to ventilate spaces by removing stale air, moisture, and pollutants, thereby improving indoor air quality. It’s essential to manage negative ventilation carefully, as it can result in a loss of conditioned air and potentially introduce unfiltered outdoor air, which can affect the energy efficiency of the building and introduce allergens or other undesirable conditions.

The other options do not accurately describe the characteristics of negative ventilation. For instance, it does not increase indoor air pressure; instead, it typically lowers it. It does not inherently bring in conditioned air, as the incoming fresh air is often unconditioned unless additional systems are in place to treat that incoming air. Finally, filtering indoor air is not a characteristic of negative ventilation; rather, the filtering process is associated with positive ventilation systems that condition and purify the air before it is circulated indoors. In summary, exhausting air from the home is the defining action