This is an intriguing idea. If a shutter were installed with it to
direct the air flow - one could direct the heated air outside through
the floor, or inside to the interior of the vehicle if needed. It's not
likely one would need the hot air coming into the van on a hot day anyway.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 6/14/2011 2:36 PM, Scott Daniel - Turbovans wrote:
> it might be fun to use the rear heater as an addtional engine coolant cooler..