I think that you have the gist of it as above. Getting new air into it is only gonna work on the driest of days though because changing the air can all too often lead to more moisture being introduced into the van. I`ve got an oldish Merc that steams up on the inside and I had to defrost it inside and outside the same as my van. Seems as cars get older that they have more issues because of the moisture getting trapped more and more each year, it`s possibly an age thing. I`ve tried something different this year and it`s a bit of a faff but it seems to work well so far. I`ve bought from B&Q a moisture trap, it looks a bit like a crystal ball but made of plastic with a strange block that goes inside that is about the size of a large bar of soap. This block sits in the two piece crystal ball and is on a shelf in the top, it seems to attract moisture and drop it into the bottom bit. It has stopped all the internal moisture in my van and my car. The faffy bit is I have to put it in the car every night and take it out in the morning because it`s a bit top heavy and likes to fall over while you is driving around, it`s fine while the motor is stationary, and in the van, its not such a big issue as its only used on weekends. This year, I seem to have noticed more condensation In my garage, at first I thought the roof was leaking as it was dripping off the inside edge of the sheets which are cement based big 6 corrugated sheets at quite a low pitch. Then I thought, hang on a minute, it hasn`t rained since last weekend ???? It would seem that the damp is getting introduced into the garage by getting the van wet and even though I shammy it off, some is dripping into the concrete base where it can`t go anywhere apart from evaporate up on warm days then freeze on the inside of the roof and it has it`s own little climate in there, very similar to what happens inside an old Merc or an old van. So I`ll get another couple of these for the garage and keep an eye on what is happening. I think they are made by Unibond. Funny enough, I`ve got rid of the moisture in my van but its dry inside and getting a bit dripped on on the outside :roll: Sometimes you just can`t win :lol:
Ozziedog,,,,,,,,,,,,,About a tenner a pop and you can get refills too :mrgreen: