Cab aircon for motorhome

I think you can get retro-fit aircon for cars and vans, therefore a MH cab should first within that scope. Whether it is cost-effective is another matter. A cheap solution is a small 12v fan on the dash or A-pillar such as you sometimes see in coaches.

http://www.alpinair.co.uk/vans/

Thanks for your help,got a few ideas ,might even be a under seat air con unit with ducting into cab run off an inverter.

chris