It can easily be added. There is a small blown air unit designed for motor homes that fits under one of the seats very easily. I had one in a Dandy Delta and some friends have it in their Pathfinder. For the life of me I can't remember the name of it though.I have seen them going on eBay. New, they are over £400. I'm sure someone else will join in with more details.
thats what i had in mind ,i see many people use fan heaters/halogen heaters but personally dont like the idea of that--{whats that melting smell?}type of thing
The beauty of the blown air one is that you don't need to be on a hook up as they work on gas and just need a healthy battery to work the blowing part. No worries about knocking over. It vents outside too so all you get is warm air and lots of it. When I find the booklet that came with it I'll come on with the name and address for you.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets