Originally Posted by asquared
Livestock trailers have different venting than rv's
Livestock trailers, yes. But many dedicated horse trailers (including mine) are sealed up as tight as any RV when the windows are closed. The only time we haul with open windows and roof vents is when the temperatures are between 45-70 degrees. Below that, closed windows and it stays reasonably warm (or, should I say not too cold) because of the body heat from three horses. Above 75 the windows are closed and the A/C is run. Even on a really hot day the temp with a/c runs around 80 degrees or so. Maybe it's not a problem because the horse area is behind the living quarters area and a long way from the diesel exhaust.
But, I think I'll just keep letting the dogs ride in the truck.