Purchased this to replace a cheaper brand I’ve had for a few years in my bedroom. It was easy to install and operate. I’ve noticed a huge difference and improvement in how quickly the room is cooled and maintained on the auto feature. Previous air conditioner never seemed to shut off! I live in an old farmhouse without much insulation so the temp in my bedroom can hit 90 pretty quickly on hot days. The Windmill gets the room cooled quickly and maintains that temp. Finally, I can sleep comfortably!