hi mike n dam, no i dont now anyone else who uses one in the van like me but i am sure thier is, i hav left machines in van for about 6 years and hav never had a prob and would never go back to lugging them out. cant comment on the portable v2 heater as mine is built in but my one is superb . as for vac booster i hav never had a prob with just 2 x 3 stage vacs at 100ft and they are really over priced imo and as for claims of 400 ft for just adding one more vac thats extra 300ft ! i dont think so some how ! the most i would use with one extra vac is 150ft if i ever felt the need for more vac power i can double two of my machines up and hav 4x3 stage vacs but still woudnt go over 150ft imo u are better spending your money on a sechand machine that way u get a backup machine plus double the vacs up if need be,this can be done in two ways one is by using a ninja vac boost lid or using a short piece of vac hose from one exhasut outlet to vac intake sorry a third way is to use a y peice and link both machines at vac intake,if you are going to work from the van u must hav a water tank,12 volt pump and auto dump and at least a 400psi pump also a very compact van as i hav that way u can get up to the front of nearly all houses ,if u use ext leads they must be very very heavy duty, imo thier is only two vans for this setup one being my one dihatsu extol and the bedford rascal type as they hav lot height inside twin doors and very narrow the first the extol is by far the better more modern more powerfull far better drive etc etc list is endless i recon my setup is 70% less to run th an a petol truckmount setup ,as i hav said for years if u lug a porty out of your van every day then u c how i am doing it the next morning u wouldnt want to get out of bed !! anyone is welcome to look at my setup anytime they want
gary