We bought a new place and it has a shop that is perfect for my ham radio room. Probley is we live in S AZ and the summers are brutal. The shop was not air conditioned so it was imperative that it be so. I did a lot of research on the web looking for a reasonable compromise between cost and BTU. This appeared to be the best one. But I needed to look at real world reviews and again it took top honors. I hired the install and it went smoothly. Its performance has been excellent and it provides enough capacity to keep my radio room cool in the summer.