Peterbilt has enhanced its SmartAir no-idle system with new auto-start technology that helps keep main and auxiliary batteries charged while running the air-conditioning system and using electric devices.     

The auto-start technology is available as a factory-installed option with Model 579s equipped with SmartAir and either a 72- or 80-in. sleeper. It’s fully integrated with the truck’s electrical system to monitor battery charge levels and start the truck if the charge falls below a given threshold.

 SmartAir, says Peterbilt, allows customers to reduce fuel costs, comply with no-idle regulations, and reduce their carbon footprint. 

The auto-start feature m
onitors the charges of main and auxiliary batteries while the truck ignition is off. If the charges fall below a certain level, the system automatically starts the truck and runs the engine until batteries are back to normal. The system performs several safety checks before cranking the engine, and interlocks ensure that the system does not unexpectedly start.  

SmartAir has a 7500 BTU/hour cooling capacity and can operate for up to 10 hours on a single charge. The split-system design is located outside the cab for optimum performance and maximum under-bunk storage capacity.      

As a factory-installed option, it’s fully integrated into the existing HVAC system and uses existing ducting. Easy to operate, according to Pete, it’s controlled through an in-sleeper LCD display.