Easy to install. I love that I can open the window when its installs.  This helps the unit to blend into the siding on the house for better curb appeal.  I am using this in a 3rd floor uninsulated office that gets to be 90 degrees in the afternoon.  It does keep the room comfortable which is no small feat!  Unfortunately, its really only as quiet as marketed when on the 'quiet' setting -- and that is extremely quiet.  It does have some rattling on high settings. But its a much 'softer' loud noise than other window units we have-- if that makes sense! :-)  This is a good fix until we can get some minisplits installed.