I'm struggling with how hot my attic gets during the summer – it often reaches around 120 degrees! I'm considering rerouting my bathroom exhaust fan, which currently vents to the outside, and instead directing it into the attic. My thought is that this could help pull cooler air from the bathroom into the attic when I'm up there. Has anyone tried this? Or is there a switch valve I could install to manage venting either to the attic or outside? My attic does have soffit vents, so I'm wondering if the added humidity in there would really be a huge issue.
3 Answers
Rerouting your bathroom fan to vent into the attic is a big no-no. It's actually against code in many places because it can create mold issues with all the moisture from the bathroom air. Instead of bringing that humidity into your attic, look for separate ventilation options like a gable fan or ridge vent to help manage the heat. Trust me, keeping that air outside is the safer way to go!
Definitely don’t vent your bathroom air into the attic. The added moisture can lead to big mold problems. To address the heat in your attic, consider enhancing ventilation with some attic fans. Bringing cool AC air from the bathroom isn’t going to lower your attic temp effectively. Better ventilation is really the key here.
I get that your attic feels like a sauna at 120 degrees, but venting bath air won’t help. Instead, focus on improving passive airflow with roof vents to let heat escape. If you just want to cool it down quickly before going up there, a dedicated attic fan might be your best bet for managing temperature.