Can You Run Two Bathroom Fans Together

The 2 fans have their own ducts but just before they vent out the roof their duct pipes are attached to a common duct upside down y which means they vent out the same hole in.

Can you run two bathroom fans together.

Connecting bath exhaust ducts together can result in problems. An additional option is to use the cvs series fan from fantech. When inline fan is in operation air from both washrooms will vent out. I have two adjacent bathrooms one of which has an exhaust fan that vents through the roof.

Both washrooms must have nearly identical square. The classic example occurs in multifamily units if one tenant is a smoker the tenant next door can smell tobacco smoke that enters the bathroom through the exhaust fan. You d often blow air from one bathroom into the other and local building inspectors wouldn t approve it. I plan to add a fan to the other bathroom but want to avoid drilling a hole in my roof.

I vote to keep the ducts separate. The above scenario will work provided the following. The typical problem is that odors can migrate from one bathroom to another. It is basically a fan in a box with 3 to 4 ports on the side.

If you are using pbh or pbl grilles grilles with built in lights the light is usually controlled by a separate light switch or switched along with other bathroom light fixtures. You can replace the fan opening with a grill for each washroom. Was replacing bathroom fan 1 and while it was disconnected from its duct pipe the fan in the bathroom 2 was on and. I felt air coming from bathroom 2 s fan down through the metal duct pipe for venting bathroom 1.