Ceiling Fan CFM
Ceiling Fan CFM
(OP)
Hi,
I am having a hard time finding the published CFM from typical ceiling fans (commercial or residential). It seems that the manufacturers don't particularly emphasise the cfm on these products.
thanks,
I am having a hard time finding the published CFM from typical ceiling fans (commercial or residential). It seems that the manufacturers don't particularly emphasise the cfm on these products.
thanks,





RE: Ceiling Fan CFM
RE: Ceiling Fan CFM
thanks for asking.
RE: Ceiling Fan CFM
ENERGY STAR specification defines residential ceiling fan airflow efficiency on a performance basis: Cubic Feet per Minute (CFM) of airflow per Watt of power consumed by the motor and controls. Efficiency is measured on each of three speeds.
* At low speed, fans must have a minimum airflow of 1,250 CFM and an efficiency of 155 CFM/Watt.
* At medium speed, fans must have a minimum airflow of 2,500 CFM (3,000 CFM by October 1, 2003) and an efficiency of 110 CFM/Watt (100 CFM/Watt by Oct. 1, 2003).
* At high speed, fans must have a minimum airflow of 5,000 CFM and an efficiency of 75 CFM/Watt.
RE: Ceiling Fan CFM
RE: Ceiling Fan CFM
Looking at the big ass fan catalog: 225 W/cfm based on the motor size of the 24' fan, not the absorbed power.
Looking down the size chart, I think that this might be one of the better operating ranges however. Still, a significant improvement over the energy star figures.
RE: Ceiling Fan CFM
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