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Old 07-31-2009, 10:37 PM   #1
steve h
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Default house blower fan
I s there anyway to speed up the blower motor for more air flow through my ducs,i was told that you rewire for more speed?thanks for any help,steve
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Old 07-31-2009, 10:51 PM   #2
Offshore
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Default Re: house blower fan
Most blower motors I see have a receptacle fitting where a plug is moved to the desired speed. Usually mounted on the motor. Mine came from Grainger and has 5 speeds.
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Old 08-01-2009, 06:03 AM   #3
lilredex
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Default Re: house blower fan
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Originally Posted by steve h View Post
I s there anyway to speed up the blower motor for more air flow through my ducs,i was told that you rewire for more speed?thanks for any help,steve

Depends......is it a belt drive or direct drive fan?
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Old 08-01-2009, 10:43 AM   #4
IDASHO
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Default Re: house blower fan
If it is a belt drive, find a smaller pulley for the motor, and a shorter belt.
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Old 08-01-2009, 10:46 AM   #5
fatboy99
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Default Re: house blower fan
That should be a larger pulley for the motor and a longer belt
also look to see if the motor pulley is adjustable loosen the set screw and move in and shorten the adjuster bolt on the motor
Brad
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Old 08-01-2009, 01:42 PM   #6
lilredex
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Default Re: house blower fan
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Originally Posted by fatboy99 View Post
look to see if the motor pulley is adjustable loosen the set screw and move in and shorten the adjuster bolt on the motor
Brad
Exactly, but be aware that if you have a 1/4 HP motor on there it is real easy to overload it, especially if it runs continuously or has long cycles. After the motor runs for 15/20 min. or so and you cannot hold your hand on it comfortably you are working it too hard.

You can reduce the fan pulley size also.
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