KingClima no idle ac unit for trucks--KingClima Industry. KingClima no idle ac unit for trucks was designed for cooling Heavy and Medium Duty Semi Truck Sleeper Cabs, Truck Cabins, Tractors, Construction Machinery, Port Machinery etc. 2.6KW cooling capacity, high efficiency .DC powered 12v/24v truck voltage for choice, Charges while driving, fuel saving. aftermarket