As noted in another thread, I tested a 2555 today. Another thing I noticed is almost no air flow through the rear 4 vents even with the front four vents closed with the fan on high. I blow a lot of snow with a 3 point blower - those of you who also do this know that a rear wiper and good air flow over the back and side glass is probably mandatory. Was this a problem with this particular tractor or is that how the HVAC vents work on the 2555? A/C didn't work on this tractor either. Weird.