This is the little air conditioner that could! My husband and I got this exclusively for our bedroom since the larger A/C unit for the rest of the house wouldn't really reach our room. We have kept it running almost continuously since the weather reached 80 degrees F in June and it has worked perfectly! It's not a small unit, but it also isn't so large that it would require two people to install it. Just keep in mind that it should be installed by someone who feels comfortable picking up approximately 40+ pounds and "hulking it" into a window. My only complaint with this unit is that it can be very loud on high and doesn't quiet down much when it goes to medium or low. Overall, we both love this unit for our 200 Sq.ft bedroom, as it keeps us, and our pup cool! [This review was collected as part of a promotion.]