I mounted my HS2211 under the seat. I found it easier to route the combustion air and exhaust pipes to the outside rather than trying to figure out a way to route the cabin air ducts to the inside.I've been very happy with the installation. I get 152 degree heat at the outlet.Mike M 

    On Sunday, February 19, 2017 11:58 AM, Stuart MacMillan <stuartmacm@GMAIL.COM> wrote:
 

 Anyone installed the new HS2211 under their van?  Karl has one photo of it
being held in place with a jack stand, but I'm curious about duct routing.
I'm deciding between models right now, and any photos are appreciated. I've
removed the rear heater, but under seat space is fully used now. I'm
wondering with the duct routing under the seat if outside install really
saves that much space.

Thanks!

Stuart