Used Aux. Air Conditioner 1990–2019

An auxiliary air conditioner is a secondary A/C system typically mounted in the rear of vans, SUVs, and minivans to cool the back passenger area independently of the front unit. It has its own evaporator, blower motor, and expansion valve but shares the compressor and refrigerant circuit with the front system. Failure signs include warm air blowing from rear vents, a non-functioning rear blower, refrigerant leaks at the rear evaporator connections, or fault codes related to the rear climate control module. The rear evaporator is also a common spot for mold buildup if the drain line gets clogged. Redline carries 14 used auxiliary air conditioner units from 6 sellers. Our stock covers 10 makes including Chevrolet, Honda, Infiniti, Mercedes Benz, Ford. Rear A/C units on full-size vans and large SUVs can be expensive new, and a used OEM unit pulled from a low-mileage salvage vehicle is a practical option for families or commercial operators who rely on back-seat cooling. Filter by year, make, and model to find a compatible unit. Ask the seller about refrigerant line fittings and whether the rear blower motor is included with the assembly.