Does a bathroom exhaust fan need a junction box?

ALL wiring connections, whether wire nutted, kerneyed, or push connectors, MUST be made within some kind of junction box. Most bathroom exhaust fans have an internal junction box specifically for this.

Are there different types of bathroom exhaust fans?





Bathroom exhaust fans typically come in one of three styles: ceiling-mounted, wall-mounted or inline/remote.

Can a dimmer switch be used to control the speed of an exhaust fan?

A dimmer switch can add warmth and comfort to any room that has an overhead fan and/or light fixture. It can control the rate at which the fan blades spin season after season and control the amount of light in the room. There are many factors to consider when installing a dimmer switch to control motor speed.

What is the purpose of exhaust fan in bathroom?

The exhaust fan in your bathroom is responsible for removing excess moisture, odors, and stale air. Without it, bacteria and mold will thrive.

How many wires are needed for a bathroom fan?

Wiring Considerations



Most bathroom ventilation fans use a 15-amp circuit breaker and 14-gauge wiring. Due to the increased power drawn, fans with heaters usually require a 20-amp circuit breaker and 12-gauge wiring. Use the manufacturer’s electrical specifications to confirm this.

Does an exhaust fan need a neutral wire?





The power source for the exhaust fan will require both the hot and neutral wires of the circuit up at the unit and it would be best to have the neutral wire at the switch box as well, especially if the a humidity control switch or occupancy sensor will be installed which requires the neutral wire.

Which exhaust fan is best for bathroom?

Best exhaust fans for bathroom

  • Luminous Vento Deluxe 150 mm Exhaust Fan for Kitchen, Bathroom, and Office. …
  • Havells Ventil Air DX 200mm Exhaust Fan. …
  • V-Guard Aerotide Exhaust Fan. …
  • Spartan Pro Vento Exhaust Fan. …
  • Crompton Brisk Air 150 mm (6 inch) Exhaust Fan for Kitchen, Bathroom and Office.

How do I know which bathroom fan to buy?

If your bathroom is larger than 100 square feet, tally the CFM requirements for the individual fixtures to estimate your needs. Plan for 50 CFM for each toilet, tub and shower and add 100 CFM for a jetted tub. If your bathroom is smaller than 50 square feet, a 50-CFM fan will work.

How do you wire a bathroom exhaust fan?

Quote from the video:
Quote from Youtube video: What you will do is take the two white wires bunch them together and then put your copper wire in from your ceiling. And wire nut them all. Together. Now here we have a blue wire and a black wire.

What is the difference between ventilation fan and exhaust fan?



Differences Between These Fans



While a ventilation fan works to bring clean air into an enclosed space from an outside source, an exhaust fan removes pollutants from the indoor air in a home or commercial space.

Is it OK to leave a bathroom fan on all the time?

Your Bathroom Fan Is a Fire Hazard



From there, it’s so easy to forget about the bathroom fan completely! There are consequences for leaving the fan on too long, though. Leaving the exhaust fan running for an extensive period of time can cause significant wear to the motor and may cause a fire.

Do bathroom exhaust fans remove moisture?

The humid air is replaced by dry fresh air from outdoors through a fresh air intake vent. A bathroom fan creates airflow while water is flowing, removing the moisture and heat resulting from the hot running water.

Why does my bathroom fan have 2 green wires?



On fan wiring the green wire is usually an electrical ground connection – that would connect to the circuit ground and the box ground. Sometimes the manufacturer gives an extra ground wire to connect to the metal box of the fan enclosure and to the metal electrical wiring junction box ground.

What is the red wire on a bathroom fan?

Use the red wire in the 3-conductor cable to put the light and fan on different switches. Connect the hot wire from the fan to the black wire from the switch and the hot wire from the light to the red wire from the switch. The hot wires in the unit may be colored differently.

Can a bathroom fan and light be on the same circuit?

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.

Do bathroom exhaust fans need a dedicated 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.

Can I connect my exhaust fan to my light switch?



Wiring a bathroom fan to a light switch is very straightforward. If the bathroom fan and light are separate fixtures, you’ll need a short wire to connect the two. Turn the power off, connect the white wires, connect the black wires, ensure it’s grounded, turn the power back on, and you’re good to go.

How do you wire a bathroom exhaust fan with light?

Quote from the video:
Quote from Youtube video: Box this is hot only when the switch is on and then we have the blue wire which goes to the light. And we have the black wire that goes to the fan. So we just flip up all three of the connectors.

What do you do with the red wire?

The exact purpose of a red wire for a light fixture can vary. Except in rare cases, it is a hot wire or a switched hot wire. Check the wire with a non-contact voltage tester with the power and switch turned on. If the tester indicates the wire is hot, turn the switch off and retest.