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3-way timers for bath fan

Posted by petra_il (My Page) on
Thu, Oct 24, 13 at 10:59

Hi everyone,

I would like to replace 3-way switches for a bath exhaust fan with a timer. The fan is 50W, no lights (we have a separate light fixture). I've seen Lutron Maestro timer (with a companion switch) and a similar Leviton LTB60 timer (with a remote switch) that would do the job. Wiring is not an issue, we can easily modify our existing system to provide neutral etc.

I like the simplicity of the Leviton timer, just simply push how long the fan should run and that's all. The question I have is: what happens when you turn on the Leviton remote switch? What setting does it use? The last used or the maximum?

What happens if the fan runs and the remote switch is turned? Does it stop the fan, resets the timing, or does nothing?

Any reason to prefer Lutron or Levitron?

I like the SmartExhaust type (turn on to start, then off with a preset delay) but haven�t seen it made for 3-way applications. Is there something similar we could use as 3-way?


Follow-Up Postings:

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RE: 3-way timers for bath fan

When all else fails, read the instructions:

Multi-Location Control
The Timer can be turned ON or OFF from any of the Vizia +® Remote Switch locations. The default ON time when a remote is pressed to turn the load ON will be the last countdown time chosen. The timer can be controlled from up to 10 locations using Vizia + Coordinating Remote Switches or up to 5 locations using Vizia + Matching Remote Switches.

Here is a link that might be useful: Look at instruction sheet


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RE: 3-way timers for bath fan

Have you considered using a humidity sensor or humidity-motion sensor fan?


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RE: 3-way timers for bath fan

I can't believe I missed that, I looked at the instructions several times ... must be the early morning kitty alarm.

I thought about the humidity sensor but living in midwest, the outside humidity can be pretty high. I'm not sure how well it would work, especially considering I keep the A/C on only when necessary.


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RE: 3-way timers for bath fan

The humidity monitors turn on the fan with a rapid increase of humidity, not a high humidity level. You'd have to turn on the shower or suddenly open all of your doors and windows.


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