how long to leave shower fan on after showering
Both of these methods require energy to run, unlike that open-door policy above, but they skip the part where your heater has to fire up again. All this said, itâs not a terrible idea to run the exhaust fan, Barb, if you do it sparingly: Try 5 or 10 minutes after your shower, then flip the switch. Even better if your fan is Energy Star-approved and correctly sized for your bathroom â too much power just means wasted electricity.