It cools my garage fairly well. It’s a little sluggish cooling the area after driving my car in. Installing the vent into the window is a nightmare. The foam cushioning doesn’t stay very well and the weight of the air hose duct is so much that I had to support it with a bracket  to keep it from pulling the vent out of the window. Cord is too short I had to attach an extension cord. Other than that I have no complaints.