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A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
Continuously-operating ventilation & exhaust fans include readily accessible override controls
The ventilation controller is next to the thermostat and has a manual override button
This bath exhaust fan ventilation control can be set by the HVAC technician for continuous operation, delayed shut off, or a set amount of minutes each hour
This home’s balanced fresh air system includes a filtered fresh air intake that is wired to the central HVAC system with timer controls while exhaust fans in the kitchen, bathrooms, and laundry room pull stale and moist air from the home.