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Old 15th August 2015, 07:36 PM   #1
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Default Speed control for 120vac fan that does not add noise

I have a 120vac window blower that I need to quiet down.
What type of speed control should I use (need at least 3 speeds) so that I am NOT adding any noise to my power lines?
Source?

Blower fan is 35watts, 120vac

thanks,
Herman

Last edited by noviygera; 15th August 2015 at 07:51 PM. Reason: addition
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Old 15th August 2015, 08:15 PM   #2
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Variac
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Old 15th August 2015, 08:17 PM   #3
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Switched resistors.
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Old 15th August 2015, 08:19 PM   #4
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Anything chaper/more basic than Variac that will work? I need three speeds only...
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Old 15th August 2015, 08:22 PM   #5
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>>Switched resistors

can you recommend a ready to use box that has that?
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Old 15th August 2015, 08:29 PM   #6
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Quote:
Originally Posted by noviygera View Post
>>Switched resistors

can you recommend a ready to use box that has that?
Use a light bulb in series. Different wattages will provide different speeds.
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Old 15th August 2015, 08:33 PM   #7
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Hi,
By a ceiling fan controller in the fan selling store. They have different sizes depending the fan.
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Old 15th August 2015, 09:12 PM   #8
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ceiling fan controller:
does it use switched resistors or transformer?

Last edited by noviygera; 15th August 2015 at 09:12 PM. Reason: correction
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Old 15th August 2015, 09:51 PM   #9
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Quote:
Originally Posted by noviygera View Post
ceiling fan controller:
does it use switched resistors or transformer?
It puts hash on the line. The only el cheapo solution that doesn't do this light bulbs. It's a resistor, and part of a system of components that can handle high voltages safely.
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Old 15th August 2015, 10:16 PM   #10
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Hi,
I have 4 fans that I used the fan controller to adjust the speed fan. I do not have any noise problems and the controller it is the one used a slide switch to adjust the speed of the fan. I bought them in Lowes. To install just remove the light switch for the fan and install the controller.
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