A simple, minimalist stock icon of an air conditioning unit. The icon should have a clean, flat design style with simple geometric shapes. The main elements should include: a square or rectangular shape representing the main body of the air conditioning unit, horizontal lines or slats to indicate the air vents, and a circular or oval shape representing the air intake/output. The color scheme should use neutral tones like grays, whites, and blues. The style should be simple and iconic, suitable for use as a small UI element or button.
