The  reason I ordered this AC is because of the size.  It just fit our small window.  It runs fine with little noise.  It is quite heavy and does need two people to move it.  On the install we had to  open it to “number two” to get it to fit over our sill.  The biggest problem was that we have vinyl siding and the “adjusters” kept getting stuck under the trim of the window.  We finally use some wood to “secure” the siding and then the install worked fine.  It is great having the AC in our bedroom for the first time.