Do you live in an apartment? If so, chances are your bathroom is connected to the rest of the apartment by something called a “stack vent.” So how does that thing work, exactly? When you turn on your bathroom vent, it sucks the air out of your apartment (and into the fan). As that happens, fresh air is pulled in through cracks around windows and doors. That’s why venting your bathroom can be so important – it helps prevent mold, mildew, bad smells, and other nastiness from building up in there!

How do bathroom vents work in apartments, Zazzy Home

Stack vents are like big pipes for air. They connect all the plumbing vent stacks (fixtures with pipes coming out of them) in an apartment together into one large pipe. This creates one long shaft through which air can travel. The key here is that each fixture has its own opening (called a draft hood), allowing air to enter it and exit it. Air enters when there is negative pressure in the room created by the exhaust fan pulling air up from below, then when this happens, some of that airflow enters the stack via holes in either the draft hood or the rim flange. From there, it travels up the stack and out the building’s roof.

Adding a bathroom exhaust fan to your apartment is a great way to reduce humidity and prevent mold from growing. But how do you know which one to buy? Well, the most important factor is CFM, or cubic feet per minute. This rating tells you how much air the fan can move in one minute. You’ll also want to make sure that the fan is designed to be used in an enclosed space like a bathroom instead of an open area like a garage.

Finally, when installing your new fan, be sure to follow the manufacturer’s instructions carefully. Incorrect installation can lead to decreased performance and pose a safety hazard to you and your family. If you have a stack vent, please remember to never block it by keeping something the wrong way round the wrong way down or even placing items against it. You want that airflow to keep flowing freely.

I hope this helps!

Thanks for reading!

Please post in the comments section below or send me an email here if you have questions or concerns. If this article was helpful, please take a moment to share it through Twitter by clicking here! As always, please check your local codes before attempting any do-it-yourself project. The reader assumes all risk of injury or damage resulting from performing this project. You assume the risk and full responsibility for completing this project as it is intended and described in this article. Under no circumstances shall we be liable for any loss or damage, including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this information. This disclaimer applies to both residential and commercial projects.


Meet Jeff. For the last 10 years, he's been repairing and fixing problem homes - from leaky roofs to faulty wiring. He started blogging about his experiences as a way to help others who might be struggling with home repairs, and he's become something of an expert in the field. Jeff is always up for a challenge, and he loves sharing his tips and advice with others. When it comes to home repairs, Jeff knows what he's talking about. So if you're looking for some help and guidance, be sure to check out his latest guide!

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