【Parking air conditioning】 This electric air conditioner is operated by a battery (generator). You can still use the air conditioner even when the engine is off. It will help you save a significant amount of fuel costs every year.
12000 BTU 12V Split AC Truck Cab Air Conditioner For Semi Trucks Bus RV Caravan
Truck Cab Air Conditioner 12000 BTU 12V Split AC Fits Semi Trucks Bus RV Caravan