I looked at the great reviews and direct customer service availability and purchased for our 500 square foot living room. This is ideal for high ceilings. 13,000bpu unit. This room gets the hot sun and we put at the hot window with some car shades and just running on low 69 degrees keeps our whole condo cool. Not noisy. Easy install. Highly recommend!. Great product! Buy one, it is awesome! No more miserable summers.