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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8267
Experience:  Furnace, A/C and heat pump specialist.
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I want to select two PanSONIC HEAT/EXHAUST FANS AND AM

Customer Question

I want to select two PanSONIC HEAT/EXHAUST FANS AND AM LOOKING FV11VHL2. Is it appropriate for a bathroom 7'6"w x 12' d x 8'-14' cathedral ceiling and is the bottom plate flat and not con cave . It is to replace an existing fan that has three switches. 2 for speed and one for 's clear this up first an then also review a new Whispergreen onefan/light. I can be phoned @ ******** Dora
JA: How old is the phone?
Customer: What a strange question. It is a land line maybe 17 years old and works fine!
JA: How long has this been going on? What troubleshooting have you tried?
Customer: Read the message . I'm not asking about a phone i'm asking about exhaust fans!
JA: Anything else you want the electronics expert to know before I connect you?
Customer: No
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

The FV11VHL2 should do fine.It is rated at 150cfms on high and 110 on low.As for the plate it will mount flush to a flat ceiling

Expert:  airheatman replied 9 months ago.

Your bathroom is 7 and a half x 12 x average of 12 ceiling.So we would multiply 7.5x12x12=1080. Then divide that by 60(minutes in and hr)

1080 divided by 60=18.

Then multiply x8 (air changes per hour.

18 x 8 = 144cfms

Expert:  airheatman replied 9 months ago.

If you have further questions, please let me know.

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Expert:  airheatman replied 9 months ago.

AS for the Whisper green ,do you have a model on it? WE need to be at the 144cfms if possible

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