jayc89 Posted August 21, 2022 Share Posted August 21, 2022 We have a "cupboard under the stairs" which was the original entrance into a cellar which has since been filled in. It's partially below ground level and is damp. We're going through a series of mitigations, one of them being fitting an extractor fan to induce some ventilation down there. With a bit of faffing I should just be able to get the ducting routed to an outside wall. I'm looking for one that I can leave on 24/7 but will only kick in when humidity reaches a given value. Most I've seen still work on some sort of timer, which I don't want. Can anyone suggest a suitable fan to use? Link to comment Share on other sites More sharing options...
PeterW Posted August 21, 2022 Share Posted August 21, 2022 Use a cheap humidity sensor to operate the fan .?? Something like this ..?? XH-W3005 Humidity Sensor 12V/24V/220V Digital Hygrometer Switch Controller 0~99% RH(12V) https://amzn.eu/d/2NAtzzq Link to comment Share on other sites More sharing options...
JohnMo Posted August 21, 2022 Share Posted August 21, 2022 Or a dMEV fan, designed to run 24/7 at very low watt draw, so running costs should be low. Shop around and they can be picked up cheaply enough, greenwood, vent axia etc. Link to comment Share on other sites More sharing options...
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