Why is it important to measure base pressure in a building?

Measuring base pressure in a building is essential because it serves as a reference point for evaluating house leakage and depressurization. Base pressure indicates the baseline atmospheric pressure within the building relative to the outside environment. By understanding this reference point, assessors can determine how much air is leaking in or out of the building envelope, which is a crucial factor in evaluating energy efficiency and indoor air quality.

When base pressure is measured, it helps to identify areas of uncontrolled air movement. If the building is depressurized, it may indicate that outdoor air is being drawn in through unintentional leaks, which can lead to increased heating and cooling demands, impacting energy consumption and comfort levels. Hence, measuring base pressure provides valuable insights into the building's performance regarding air sealing and ventilation strategies.

This understanding is vital for making informed decisions about improvements or repairs that can enhance the building’s overall energy efficiency, comfort, and health for its occupants.