Can you put 2 inline fans together?

The maximum unrestricted flow will not be increased by mounting two fans inline with each other. If you put two of the same fans on the same side of a 2′ tube, the airflow would be the same as if there was only one.

How far can you run a bathroom vent?

For environmental air duct exhaust: 3 feet (914 mm) from property lines; 3 feet (914 mm) from operable openings into buildings for all occupancies other than GroupU, and 10 feet (3048mm) from mechanical air intakes.

Does stacking two fans increase airflow?

Putting two fans together does not increase the maximum airflow of the fans. So if you have a fan that pushes 50cfm in a theoretical, no resistance situation, putting two of them together will still only push 50cfm. What stacking can do though is help overcome resistance to the fan.

Can you have two fans and one vent in a bathroom?

But while you can’t have two fans with one vent, you can make one fan and one vent serve two bathrooms. This setup requires an in-line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms (see photo). A grille in each bathroom attaches to ducts, which then fasten to a “Y” connector at the fan.

What kind of exhaust fan does a bathroom have?

Both bathrooms are vented by a single in-line fan that has one exhaust vent running through the roof. Each bathroom has its own exhaust fan; each fan vents separately out the roof.

What should I do if I connected two exhaust fans to one roof vent?

When connecting two exhaust fans to one exterior vent its best to remember a couple of important things. Make sure the exterior vent can handle the cfm. Use rigid pipe, this is better to ensure no back pressure or restriction. Use a damper, flapper this let’s air out and restricts the back flow into the home. Keep vent away from exterior window.

Can you put a fan in the second bath?

It’s less expensive to simply add a fan in the second bath and vent it separately (Figure B), although that will entail cutting another hole in the siding or roof. If you go this route, consider a fan with a built-in humidity sensor. It detects a rapid increase in humidity, like during a shower, and automatically turns on the fan.