Unlike air conditioners, fans only move air—they do not directly change
its temperature. Therefore, ceiling fans that have a mechanism for
reversing the direction in which the blades push air (most commonly an
electrical switch on the unit's switch housing, motor housing, or lower
canopy) can help in both heating and cooling.
Some ceiling fans are mechanically reversible (have adjustable blade pitch) instead of an electrically reversible motor.
Types of ceiling fans :
Many styles of ceiling fans have been developed over the years in
response to several different factors such as growing energy-consumption
consciousness and changes in decorating styles.
Cast-iron ceiling fans.
Pancake" motor ceiling fans.
Stack-motor ceiling fans.
Direct-drive ceiling fans
Spinner fans
Spinner-motor fans
Skeletal motors
Friction-drive ceiling fans
Gear-drive ceiling fans
Internal belt-drive ceiling fans
Belt-driven ceiling fans
DC ceiling fans
Hugger ceiling fans
(also known as "flush mount" or "low profile" ceiling fans)
Bladeless ceiling fans
High-volume low-speed fans
Synchronous motor mini ceiling fans
Punkah style ceiling fans
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