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Old 02-01-2011, 06:58 AM   #1
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Fan speed controller?


Hey there!

I'm doing some DIY work on our house and would like to reduce the speed and noise of the extraction fan in one of the toilets. The fan itself is fairly new but it's very loud and probably working far too hard for the space. I've read online about "speed controllers" which dial down the speed of the fan but haven't had any luck actually finding any online to order. Does anybody know where I can find a good one online?

The fan is an impeller in-line type fan, I think it's 300cfm. And it's 220 vac (hello from Europe!).

Thanks,

Mark

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Old 02-01-2011, 07:03 AM   #2
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Fan speed controller?


A ceiling fan speed control would probably work, just wondering if the exhuast fan is rated to run a lower speeds, slowing it down may cause a heat problem, causing premature death.

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Old 02-01-2011, 07:36 AM   #3
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Fan speed controller?


It's probably easier and cheaper to buy a new exhaust fan with a lower sound decibel rating than messing with the one you have.
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Old 02-01-2011, 08:11 AM   #4
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Fan speed controller?


A new fan might be easier and cheaper but as far as I can tell this fan is still pretty new (it's a newly built house that was vacant for two years before we moved in). I'll go into a local electrical shop and ask what they have in terms of venting fans. Thanks.
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Old 02-01-2011, 08:29 AM   #5
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Fan speed controller?


Not sure but if money is not an issue, I think there are fans where the motor is at the end or near the end of the run of exhaust piping. Pull rather than push?

That means a longer run of electric cable from switch to motor but a powerful fan motor that's so far away isn't heard.

I use a mechanical spring loaded timer switch with a pointer dial that shuts off after time selected. Up to 60 minutes max.
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Old 02-01-2011, 11:21 AM   #6
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Fan speed controller?


I read elsewhere on the forum that a standard potentiometer might do the trick, as in one of those dimmer light switches. If I find one rated for enough amps, would a dimmer switch work to reduce the noise?

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