Thermo King’s new patent-pending, efficient heating and cooling system is designed to address industry challenges — the need for integrated design, easier accessibility for regular maintenance and uniform air flow. The Slim Line Rooftop A/C unit (SLR), combines an ultra-low, lightweight rooftop design that is environmentally friendly and provides a lower refrigerant charge than conventional systems and can be installed in the middle of the bus for more uniform air flow. The modular design reduces the installation time and the system configuration allows for 90 percent of the maintenance to be performed from inside the bus. The ultra-low profile — measuring less than 6 inches above the roof and 3-and-a-half inches inside the vehicle — provides significant space and energy savings. Utilizing state-of-the-art structural foam molding and weighing in at 130 pounds, the modular unit is easy to install and maintain, providing easy and safe access for maintenance from inside the bus — an industry first for roof-top systems.