Can you get small, external draining fixed dehumidifiers?

[MisterBoy]

My garage is actually a Victorian coach-house(!) and suffers quite badly with damp which is not good for storing tools and suppliers. A refit isn't feasible right now so I was wondering about a dehumidifier, but I don't really want one taking up space and I don't want to have to keep emptying it.

I can find wall-mounted units but what I was picturing was something more like an extractor fan which is installed into the wall and drains externally so it can run 24/7. Does this sort of thing exist, at least without buying some very expensive commercial unit which would be overkill?

 

[stem]

I've not seen anything that installs into the wall. Because dehumidifiers contain a refrigeration system / cooling coil, the dehumidifying mechanism is quite bulky so it's probably not practical.

Dimplex and Eco Air both make wall mounting dehumidifiers, and whilst they do have a storage tank, they also have the option to attach a tube to allow condensate to drain outside.

 

[MisterBoy]

I was thinking the small units you can get with 500ml tanks can't be much bigger than a DMEV internally but then I guess they are pretty useless so this makes sense that there is a size restriction.

So if I got a larger one with a wall-mount option I guess it's as simple as drill a 10mm hole through the wall, maybe angled down and into a drainpipe or something?

 

[stem]

Sounds about right. it might even be a bit less, 6mm? It's a while since I've seen one, and my memory is getting a bit dodgy these days