Bathroom Exhaust Fan Code Requirements Illinois. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. While the codes allow for either windows or mechanical ventilation in a bathroom with today s tighter buildings an exhaust fan should be installed on a timer in all bathrooms.
Or greater or by mechanical means a bathroom vent fan 20 continuous or 50 cfm intermittent vented to the. If the bathroom has a ventilation fan it can occupy the lighting circuit but.
Or greater or by mechanical means a bathroom vent fan 20 continuous or 50 cfm intermittent vented to the.
The fan pulls air out of the bathroom and allows fresh air to be drawn in. One of two choices is required for light and ventilation in your bathroom. There are not too many people that will open up a window when it is freezing outside leading to a ton of moisture being dumped into the house. While the codes allow for either windows or mechanical ventilation in a bathroom with today s tighter buildings an exhaust fan should be installed on a timer in all bathrooms.
