How Does It Work? When a vehicle is laid up there is a quantity of air trapped inside the vehicle together with water vapour & bacteria. This produses mould on surfaces & corrosion on metal. Vent-a-space collects this fixed quantity of air & continuously circulates it. Firstly the air passes through a biological filter, it is then heated slightly to remove any water vapour. The air is then disinfected. this cycle is repeated constantly ensuring only clean air can remain in the vehicle. & any mould or bacteria is killed. The most effective place in a car is between the front seats with the output directed towards the windscreen & dashboard. This gives greatest protection to the most vulnerable bits & creates a good circulating airflow around the whole of the interior. The picure shows an extreme case but this damage occurred within six months of a car being left in storage. The damage is far worse than first appears. Plastic surfaces can usually be wiped clean but fabrics, stitching & plated switch contacts are usually inaccessible & the controls & switches etc. All need to be dismantled & cleaned to remove the mould before they would work properly again. When the vehicle is left the air is trapped inside with water vapour & bacteria & the mould begins to develop very quickly. Carpets & upholstery can be permanently damaged Quality cars such as rolls royce & bentleys have the added risk of damage to wooden cappings & trim damage. the dampness can cause the varnish to lift & split from the wood. all these problems can be avoided. ===================== Comment from user: " When I put my car away I fit the battery saver & the ventaspace whilst the interior is warm & dry, close the air intake control for the air-con/heater to capture the warm dry air. I have a Range Rover which sits in the drive rarely used with a vent-a-space running. I can see it from my lounge window & can tell there is a lack of condensation on the interior of the glass since fitting it (4 cubic metres) & it feels much nicer when I do use it."