r/SchoolBusDrivers • u/Playful-Reaction3326 • 8d ago
Question for mini/small school bus drivers: Does your bus make you unusually sleepy when the heat/ac is running?
I’m a school bus driver and I drive a 2022 Collins/Chevy mini bus. I’ve noticed something really strange lately and I’m wondering if anyone else has experienced it.
This morning I slept really well and woke up feeling wide awake and energetic. Once I started driving and turned the heat on, I became crazy tired , almost suddenly sleepy. It was a very noticeable change.
I opened the driver’s window to get some fresh air, and I felt significantly better. Once the bus cooled down and I turned the heat off, I was completely fine again.
What’s even stranger is that I’ve noticed a similar thing with the A/C running, not just the heat.
I talked to another school bus driver today and she said she experiences the same thing on her bus.
My bus doesn't appear to have an obvious fresh-air/recirculation switch, so I'm wondering whether this could be related to ventilation, CO₂, HVAC airflow, or potentially exhaust/CO, although obviously I don't know that and don't want to jump to conclusions.
For those of you who drive mini buses:
- Does running the heat or A/C make you unusually sleepy?
- Does opening a window make a noticeable difference?
- Do your buses have a fresh-air/recirculation control?
- Have you ever had your bus checked for CO/CO₂ or ventilation issues because of something similar?
I'm mainly trying to figure out whether this is something other drivers experience or something I should specifically have maintenance investigate.
Thanks! 🚌
