Hi I use a dehumidifier in the garage, controlled by a hygrostat. Running costs (which I have monitored) are around £60 - £90 p.a. As well as protecting the car I avoid rust/mildew on tools and workshop equipment. The condensate (after filtering) runs the boss's steam iron and is also ideal for use as a coolant as there is no lime-scale. I am lucky that my garage has reasonable insulation, and the dehumidification is backed up by elementary frost protection (A small electric fire connected through a thermostatic switch operates when the temperature drops to around 5C). The increase in temperature reduces the relative humidity, so the two appliances are not often running at the same time. It adds a further £30 - £40 to my annual electricity bill, but gives peace of mind and probably pays for itself since paints, glues and various other items need to be stored away from frost. In a perfect world I would love a Carcoon or Airflow chamber, but 2 cars use most of the available space, and I use the remainder as a rather cramped workshop Good luck Martin Wickham Posted by martinw 26/03/2013 08:28:39