Extractor Fan in small office

[leevis]

I am thinking about getting the Silent 100 Design, looks quite nice, have a few of these already. What i have noticed though is that as it is a humidistat one they do tend to go off a fair bit which i think is what i need.

Not too sure how to power it though, i was just thinking about using the light feed, into an isolator switch and then into the unit but not too sure how possible this actually is. Hopefully easy.

 

[Harry Bloomfield]

What i have noticed though is that as it is a humidistat one they do tend to go off a fair bit which i think is what i need.

No that is not what you need, the humidistat is only of use in a bathroom and kitchen to clear moisture. You need manual control, perhaps set up so it comes on when the light comes on. You might find even a PIR triggered one annoying, where it constantly comes on when you move, then goes off when you remain still. I would suggest you need either a constant whirl of the fan running in the background, or silence - so a manual switch.

 

[leevis]

Yeah i think that is a good call. I will take another look at the models available. I am thinking just a bog standard connected to the lights (via an isolator).