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It's to keep positive pressure in your unit for safety purposes. If there is a fire the fresh air will help keep smoke out of your unit and as a bonus it keeps
by hourislate 5y ago
It's to keep positive pressure in your unit for safety purposes. If there is a fire the fresh air will help keep smoke out of your unit and as a bonus it keeps other building odors out. Generally it is a large fan on the roof that just sucks air down a stack pumping it into every unit. You could put a filter over the register and filter that air.
- withinrafael 5y agoSorry, by intake I meant it's sucking air in. That is, air is leaving my apartment. I think you're on the right track with the safety angle here though. Will do more research.
- bbarnett 5y agoAir is leaving, thus, it is being sucked out of the apartment.
- zz865 5y agoIts probably the opposite, it sucks out air. It does stop smells from this apartment going into neighboring spaces.