Anybody have any experience with recessed light exhaust fans? How do they perform compared to a standard exhaust?
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Usually they have stronger squirrel cage fan wheels in them. Vent directly to the exterior. Consider putting the fan on a 30-60 min timer. Do good ducting; don't choke the system
Sounds good.
There is very no difference in performance. Basically the steel box that housed the fan is just larger to house a light. The CFM rating of the fan is the key performance factor. Venting is done the same way as a fan without the light. Make sure you use 4" vent pipe though, some fans come with an adapter for 3" vent pipe, but it will substantially reduce performance.
Thanks.
One more question... do you know if a bathroom exhaust should be on a dedicated cercuit?
It can be on a regular house circuit with lights,etc. They only draw 1.5-2 amps. Just make sure the circuit does not become overloaded- a maximum of 12 duplex outlets and/or lights on a circuit. This would most likely count as 2 of the twelve.
That is Canadian code.In the US, for residential there is no limit on the number of receptacles on a circuit, however, a some cities have modified the NEC for a limit.For lights they could go by the fixture ratings. And if you had a single circuit serving an area they could go by the general requirement of 3 watts/sq ft for general purpose lighting and receptacles.However, there is another limit for bathroom circuits. You are required to have a 20 amp circuit. However, that one circuit can supply ONLY receptacles in multiple bathrooms or it can supply fan, lights, and receptacle in only one bathroom.So he should not tap into an existing bathroom circuit if it supply anything else other than that one bathroom.But he could tap into other general purpsoe circuits.
Thanks for the information. I will be working from a new cercuit but will add other lighting to it. The new circuit will be for the bathroom renovation. A couple recessed lights, the fan and a couple outlets.
Thanks again
That's interesting, Bill. A few weeks back, there was a thread about someone wanting to add more octogons/lights onto an existing octogon/light. There wa a fair amount of discussion about the "12" limit but no one ever mentioned the rules that are regularly used in the US. Must have been talking to Canucks!!!
Man, wish the US would get a single unified code for plumbing, electrical/structural with special sections for cold/hot/humid, earthquake, tornado and hurricane zones!!!