Which is correct about air pressurisation of buildings?

Question

Quizplus · Accepted Answer

When exhaust air volume exceeds supply air quantity, building is depressurised. This is because there is now a greater amount of air being removed from the building than brought in, resulting in a negative pressure differential. This can lead to problems such as air infiltration from the outside, causing discomfort to occupants and potentially increasing energy costs. Supply air fans do play a role in creating air pressurisation, but they must be properly balanced with the exhaust air system to achieve the desired pressure levels. The outdoor wind environment may affect the pressure in the building, but it is not the primary factor in creating air pressurisation. The supply and exhaust air quantities do not need to be equal, but they should be balanced to achieve the desired pressure levels.

Which Is Correct About Air Pressurisation of Buildings