Uploaded May 2026 | Updated September 2026, 2 weeks ago

---

Zack Dettmore explains how a bathroom vent fan works and then installs one in a newly renovated bathroom.

SUBSCRIBE to This Old House: bit.ly/SubscribeThisOldHouse.

Looking for more step by step guidance on how to complete projects around the house? Join This Old House Insider to stream over 1,000 episodes commercial-free: bit.ly/2GPiYbH

Want weekly tips, project guides, and behind-the-scenes content from the TOH crew?
Sign up for our free newsletter here: thisoldhouse.com/pages/newsletters

Plus, download our FREE app for full-episode streaming to your connected TV, phone or tablet: thisoldhouse.com/pages/streaming-app

Follow This First House:
Official website: thisfirsthouse.com
Facebook: bit.ly/ThisOldHouseFB
Twitter: bit.ly/ThisOldHouseTwitter
Pinterest: bit.ly/ThisOldHousePinterest
Instagram: @thisfirsthouseofficial
TikTok: @thisfirsthouse

How a Bathroom Vent Fan Works | This First House
youtube.com/user/thisoldhouse