What is difference between fan and blowers?

Fan	Blowers
Fans do not focus on a particular area. It circulates the air through the entire room.	A blower circulates the air on a pointed area
Fan does not need to use high pressure to produce large amount of gas	Blower uses the high pressure to generate large amount of gas
Pressure ratio is usually below 1.1	Pressure ratio is usually from 1.1 to 1.2
Types of fans are Axial flow fans. Centrifugal fans. Cross- flow fans.	Types of blowers are: - Centrifugal blowers. Positive-displacement blowers.
It consists of motor and blades	It consists of fan, inlet, out-let and outer cover

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