Variable-speed timer switch

We have one of those whole house fans. It works great. The only problem is that it is very noisy. It does have a variable-speed control (rheostat?) so that we can turn it on at various speeds from high to low.
What it doesn't have is a timer that will allow us to set it to run for a couple of hours and then shut off. In the summer, we often need it to run for awhile after we have gone to sleep, but not all night.
I went to the local electric store and asked if anyone makes a combination variable-speed and times switch the guy said no. I know that I can wire a timer switch in series with the variable-speed switch, but then I need to cut another hole in the wall.
Does anyone know where I might find a combination switch that will allow me to set the speed and also a timer for up to, say, 4 hours?
I tried Google for variable-speed and timer and switch, but I got either timers or variable speed switches, not both.
Thanks
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Never saw one, but try Graingers or a greenhouse supply.
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this handles up to a 1hp motor for $31.25 at: http://www.energyfederation.org/consumer/default.php/cPath/39_766_133
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wrote:

That switch will turn the motor one and off (up to 36 times each day), but I did not see any variable speed capability.
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X 10 will do all that and more, commonly available probably still at radio shack although they are converting to toy stores:(
turn on lights all thru home, dim them, work by timer and also by wireless remote controls
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wrote:

Is X10 stable and reliable now? I looked into it briefly a number of years ago (hmmmm, maybe 15?) and it seemed to have a lot of problems.
Each "unit" (light switch, etc.) has an address or ID and digital signals are sent over the house wiring, right?
I would need to buy an X10 switch for each device (light, fan, etc.) that I want to control, right?
Then I need a controller, right? Is this a stand-alone unit or can I buy software for a PC? If so, does the PC need to be dedicated to the X10 system?
I see several web sites:
www.x10.com www.x10-direct.com www.x10.com www.smarthome.com
Any that are better than others?
The bes ng is comp.home.automation, right?
Thanks
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