Identifying bathroom exhaust fan for upgrade

Old 10-27-20, 09:23 AM
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Identifying bathroom exhaust fan for upgrade

When remodeling my bathroom I decided to leave the fan alone. Since then, I've seen they have these upgrade kits that claim to increase the CFMs and reduce the noise by just replacing the innards. My fan is from around 2000 I believe and there are 2 pictures below. I see a bunch of numbers on the motor but am not sure which is the model number if any. The housing for the fan is around 7.5x7.5, I don't think this alone is enough info as apparently the tabs and things can be different.


Last edited by PJmax; 10-27-20 at 04:30 PM. Reason: resized/labeled pic
Old 10-27-20, 04:40 PM
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That looks like an old Nutone/Broan fan.
I don't know about an increase in air movement but I know there are replacement motors and blades available. It goes by the model number of the unit where the red arrow is.

I think the 97012041 is the rebuild kit for older Broan fans. It shows as 50cfm.
I see 70cfm kits but don't know if they'll fit. It will depend on your fans model number.

Broan/Nutone BP28 fan motor and blower wheel *70 cfm* kit fits Broan 655, 657, 658, 679, 671, 671a.
Old 10-28-20, 01:29 PM
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Can't help with "Upgrade Kit" (never heard of that). The Code requirement is 50 CFM, and a "50 CFM" fan won't deliver that much with ductwork attached. You'll need a "70 CFM" or "80 CFM" fan to deliver the 50 through ductwork.
Old 10-28-20, 03:38 PM
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That is in fact a Broan/Nutone fan. Extremely common fan and housing. There is an upgrade kit (QK60) which ups the CFM to 60, while reducing noise. I think it's around 35-40 bucks. You can also fit a replacement BP28 70CFM motor & wheel in there, but it will be a bit more noisy than the 50CFM unit you are removing.
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