Merced A/C Equipment Service's Stage II Mobile Air Conditioning Trainer is a fully functioning automotive HVAC system. Virtually every aspect of a mobile HVAC system exists in this A/C system simulator. Among the trainer's key features are transparent hoses and custom designed refrigerant lines to allow visual hydraulic flow. Numerous cut-outs at the dashboard and plenum, along with hidden LEDs, allow a view of the workings of the evaporator, heater core, blower fan, resistor, blend door actuators and ducting to registers. Designed to be transportable, the trainer - available to purchase or for rent - operates on 220 VAC.