I have a W Box split air conditioner, 18200 BTU, excellent quality, and very cold, ماشاء الله. It has no issues. Used for 10 months. Copper radiator, external and internal. 18,000 BTU, like new. Quantity: 2. The split unit price is 850. The window unit price is 650. Used for 6 months, as shown in the pictures.