I have been thinking about this option on Amazon as well. If you install it inside the bed of your truck then you have to vent it out the bed somewhere correct? This seems like an affordable solution. Is it true that this Chinese model will not work as good in higher elevations? I’m trying to understand what benefits I would gain by this option below which is a lot more expensive. I am looking for a good heater to camp in the parking lot at Kirkwood this winter for snowboarding. Any thoughts?