I was recently in a hotel which had a bathroom fan activated by the light switch. It is not a central ventilation system, the fan is in the ceiling. I assume there is not a separate exhaust through the exterior wall for each of the hotel's bathrooms so how do they route the ducting. Does each room's ducting lead to a central line and have a one way flapper to prevent exhaust from one bathroom to enter another's bathroom? I am building a house which will have 4 separate exhaust fans and an air exchanger and I do not want 5 outlets exiting the house. Thanks
- posted
18 years ago