Clean Used SKM Window AC (18,000 BTU / 1.5 Ton) – Used for 1 Year Only For sale: SKM Window Air Conditioner Condition: Excellent, very clean, and in perfect working order. Used for only one year. Cooling Capacity: 17,500 BTU (Commonly known as 18,000 BTU or 1.5 Ton). Brand: SKM (Original compressor and factory Freon, never repaired). Energy Efficiency: Window AC standard (Class F / و). The AC cools perfectly and has been well-maintained. Cleaned and ready for pickup.