Can You Run Two Bathroom Fans Together

Connecting bath exhaust ducts together can result in problems.

Can you run two bathroom fans together.

Then add an inline fan to the remaining leg of the y adapter and run ducting to vent outside. I felt air coming from bathroom 2 s fan down through the metal duct pipe for venting bathroom 1. 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. Both washrooms must have nearly identical square.

Can i tie two bath exhaust fan vents 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. 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. I vote to keep the ducts separate.

The above scenario will work provided the following. I plan to add a fan to the other bathroom but want to avoid drilling a hole in my roof. I have two adjacent bathrooms one of which has an exhaust fan that vents through the roof. It is basically a fan in a box with 3 to 4 ports on the side.

If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be wondering if you can tie a new exhaust duct into the existing one. You can replace the fan opening with a grill for each washroom. An additional option is to use the cvs series fan from fantech. The typical problem is that odors can migrate from one bathroom to another.