Garage dehumidifier

[Bob-iylho]

Hi,
Can anyone recommend a dehumidifier for a 6x 9m wooden garage with loft space, the triple garage is split into a double and single, the single has all the house heating system and is quite warm. The double has my S2 JPS esprit in and not so warm.
Ideally I want one where it kicks in as and when and drains externally so I never have to do anything with it.
Thanks.

[Bob-iylho]

Thanks chaps, will look at all the links but tempted to go PIV.