Have had the unit for about a month and are pleased with the performance, it is quieter than the two previous units at this window. It has a slow start up when placed in Energy Saver that didn’t wake us up! Great for sleeping. Didn’t like the fact that an awning is possibly required, it is mentioned twice in the inst. manual. We can’t afford to install an awning. The unit is also lighter than the previous, hopefully these two items will not reflect in the length of service. So far we love it. I