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Questions people ask about ceiling fans, answered from the 712 fans on the certified list.

What is a good CFM/W for a ceiling fan?Typical values for every blade span, from the certified list.How many watts does a ceiling fan use?High, low and standby draw by blade span, with kWh arithmetic.Which ceiling fan brands rank highest on CFM/W?A size-adjusted index for the 16 largest brands.Hugger vs downrod fans: how much CFM/W do huggers give up?Flush-mount against downrod fans, span by span.Do bigger ceiling fans score higher on CFM/W?Median CFM/W and watts across ten blade spans.Standby power: do connected ceiling fans use more?Standby watts of connected, light-kit and plain fans.Ceiling fan light kits: lumens, efficacy and colorLumens, lumens per watt, color temperature and CRI.