Pump/Compressor location

For folks who pull HazMat, and have an APU on your right frame rail, where have you located your pump and compressor for maximum efficiency? I think my only option, given the circumstances (my carrier is supplying the pump and compressor free of charge), will be to ditch the APU. If it's mounted on the left rail, I'll have too much hose that I'll need to carry plus some customers won't allow you to run hose under the truck.

Maybe I run piping from the pump under the truck to the right side? That would leave a lot of rigid pipe to clean after those deliveries.

 

I'll investigate what my carrier is supplying. APUs aren't generally on the left rail due to noise transfer into the sleeper. I'm wondering about the hassle factor of running pipe under the truck so it exits right at the APU.

 

Pump and compressor are one unit.

 

Hyd and the oil cooler would be on a rack behind the sleeper on the left side. Unfortunately, that means no room for a hose rack and that's another issue.