Wiring Bathroom Exhaust Fan/Heater

cubbiesfan1908January 4, 2011

Hi all,

I want to replace a standard bathroom exhaust fan with a exhaust fan/heater combo. I live in the Chicago suburbs and it can be pretty cold in the bathroom in the morning.

My home has the electrical wires running through conduit which I understand is local code.

I want to wire the fan/heater in such a way that there is a switch for the fan and one for the heater. During the summer, I'll want to run the fan but not the heater.

Can I just run an extra hot and neutral wire through the existing conduit to add another switch?

Thanks for your help!

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Ron Natalie

Yes you can though sometimes it's a bit rough to pull an additional conductor through a conduit that already has stuff in it. They make double switches that fit where one switch goes.

The questions are:
1. Can the circuit handle it. Most likely yes, the heater+light rarely exceeds 1200 Watts. Of course, you'll have to decide what else is on that circuit (not really so much a code factor than a nuisance factor). If it's on the same circuit as the receptacles in the bathroom, anybody with teenager daughters knows that one of those monster blow driers can trip a circuit.

2. Can you shoehorn the unit you want into the space your existing fan is in and get the exhaust duct to line up.

    Bookmark   January 5, 2011 at 8:15AM
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You won't need an extra neutral. The fan and heater will share the neutral. You will only need the hot wire to control the heat.

    Bookmark   January 5, 2011 at 8:46AM
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