^I’m inclined to give VIA the benefit of the doubt. One would have to know more about how the measurements were taken and where in the trip cycle they happened.
My impression is that especially post covid, the hvac in VIA’s passenger cars does draw in lots of fresh air, at least by design. I’m surprised by the findings.
I know that the shop practice for warming up some types of HEP cars after layover or out of service is to do so with the blowers off……, apparently the cars warm up faster that way. Possibly the train had cooled down overnight and somebody left the fans off during startup.
- Paul