Venting Two Bathroom Fans Together

Bathrooms are wet smelly places that often are closed in and unventilated.

Venting 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. Bathrooms can only benefit from some type of exhaust venting system but which type do you need and what does the bathroom exhaust fan venting. Was replacing bathroom fan 1 and while it was disconnected from its duct pipe the fan in the bathroom 2 was on and.

One is to route it over to a soffit vent and attach it to the back of the soffit vent but this can work against your exhaust fan because that s actually an air intake so not as good as other methods. Moisture though is the real problem since it can create potentially hazardous mold and mildew eating away at your walls ceiling and trim. I felt air coming from bathroom 2 s fan down through the metal duct pipe for venting bathroom 1.

A typical multi inlet fantech installation. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. Each fan vents separately out the roof.

Another method a little bit better is if you have a gable style roof and a gable vent on one end of the house you can attach this to the back of a gable vent. Several different ways you can move that hot air to the outside. Each bathroom has its own exhaust fan.