Questions About Air and Ventilation

Why is There So Much Air Coming in From the Door of My Suite?

Unless you open your windows, there is no fresh air that naturally comes in your suite. As a result, air would become stale and unhealthy. As well, in winter, condensation on windows could be a problem and mould could develop.

Air forced into corridors comes directly from the outside. It is “fresh” air. The pressure of this air is designed to compensate for air that goes out of your suite through the kitchen and bathroom exhaust fans. That’s why doors are designed to let some air in all around, especially underneath.

So the air that comes in under the suite door helps a suite from being too humid or the air too stale. It also helps prevent condensation on windows in winter.

When corridors’ ventilation system is controlled, more air is generally pumped in during the days than at night. However, not all buildings have control over the system.

Where Does the Air in the Corridors Come From?

As mentioned above, it comes in directly from the outside from air intake units on the roof. For lower floors, air may come from side units on the ground or basement units that are hidden under large grills.

This corridor air is heated in the winter and constitutes a good portion of the costs of heating in a building. In summertime, the air is cooled and constitutes a sizable portion of the electricity used in the building. (Click here for Energy Savings Measures)

In order to save on energy use and cut costs, corridor air is not warmed to the same extent as is the case in suites during winter time. Similarly, in summer, the air is not cooled to the same extent as it is in suites.