It is suggested for most bathrooms that you set the timer to allow the fan to run for 10-15 minutes after the light has been turned off or longer for heavy use bathrooms and wet rooms.
How does a timer work on a bathroom fan?
Bath fan timer switches are a replacement for the light and fan switches that allow for automatic timing of the length of time the exhaust fan runs. After the person leaves and flips the switch off, the fan will run for the additional 10-minutes delay time, totaling 15 minutes of operation for that hour.4 Jul 2018
How long should bathroom fan run?
According to the Home Ventilation Institute (HVI) the exhaust fan should run for at least 20 minutes after the shower has been used. This ensures that the proper amount of ventilation has occurred. Any easy solution is to install a fan timer switch.
Can I use a regular switch for a bathroom fan?
2 Answers. You can use the switch to operate both the fan and light, if you so choose. In fact, this is a common feature in single user public restrooms. As long as the switch and wiring are rated for the amount of current, which unless you get a huge fan, it should be.8 Jun 2014
Does a bathroom fan need to be on its own circuit?
Bathroom Circuits If the vent fan has a built-in heater, it must have its own 20-amp circuit. This is called a "dedicated" circuit because it serves only one appliance or fixture. Heat lamps, wall heaters, and other built-in heating appliances may also require dedicated circuits.17 Dec 2021
Do you need a special switch for a fan?
If you're replacing an old fan or light fixture and the wiring in the fixture box contains only two or three wires (black, white, and green or bare copper), you must use single-switch wiring for the new fan; double-switch wiring requires a circuit with four wires (black, red, white and green/bare copper).
Can bathroom exhaust fan be on same circuit as lights?
In general, residential exhaust fans require very little power and combining with lights should not be a problem. This is acceptable. Many bathroom fans include lights with the intention of both being wired to one switch on the same circuit. They can also be wired separately to different switches.21 Aug 2019
Do bathroom fans need special switches?
Wiring Switches in a Typical Exhaust Fan Installation Most bathroom fan units require a special type of switch that has multiple switches built into it which will enable separate control for the various bathroom fan functions. These switches are designed for one circuit or power source only.
Can you use a light switch for bathroom fan?
Connecting a Light and Fan to a New Switch Using wire strippers, strip an inch of insulation from the end of the black and white wires. Splice the black wire from the fan together with the black wire from the light and the black wire from the switch, and cap them. Mount the fan and light and move to the switch box.