Exhaust fan shared by 2 bathrooms

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Posted by: from Toronto
3/17/2016 at 1:52:56 PM

Looking to replace this exhaust fan that is shared by 2 bathrooms with a better unit. The old unit doesn't move air fast enough

Thinking of either:

a) replace the unit

b) install separate exhaust fan for each bathroom

I live in a condo if that matters. The option a) seems to be easier, but if b) is feasible, I want to go that route. Could anyone provide a rough cost-estimate and preference for either approach?


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Sebastian from Direct Painting in Markham
Date/Time3/17/2016 at 2:26:10 PM

Not possible to do an estimate based on the info you provided. More detail, exhaust etc.


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Robert from Electrilight Ltd. in Oakville
Date/Time3/18/2016 at 7:50:17 PM

You should not share ducts by code, but sometimes it is practical and useful if done properly with dampers, back-flow preventer, etc.

Fans are installed on square footage, but generally people put in cheap ones because a) they don't care, b) they don't know better or c) it's on sale.

Truth is, fans take odour and vapour out of homes and help keep mold and bacteria from starting. Good fans do good jobs of this work, cheap fans don't work so dont waste your time and money. Buy high CFM, low sone, careful of duct size and put it on a timer so it doesn't suck the heat out of your home during winter. Get it installed professionally. If new wiring is needed a licensed electrical contractor is required and a permit from ESA.

I've installed $500 systems and $2000 (for remote units). You can calculate the volume of air in the room, LxWxH, then your fan should cycle that volume in your timer allowance (30-60 minutes normally)

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