Used SKM air conditioner, clean ✅ Only serious buyers should contact‼ Do not undervalue the item, the air conditioner is clean and excellent. Reason for selling: No longer needed. (18,000 BTU / 1.5 ton) - Used for only one year. For sale: SKM window air conditioner. Condition: Excellent, clean, and highly efficient. Used for only one year. Cooling capacity: 17,500 BTU (known as 18,000 BTU or 1.5 ton). Manufacturer: SKM (original compressor and refrigerant, never serviced). Energy efficiency: Standard for window air conditioners (Class W / F). The air conditioner has excellent cooling and has been well-maintained. It has been fully cleaned and is ready for immediate pickup and use.