We really like the product for its easy installation and quiet operation.  We are happy to discover its WIFI connection to allow remote control by smart phones away from home.  It is very small and cosmetically pleasing.

The reason to lose one start is because the package was broken by FedEx driver's trolley, causing damages to the fins of the radiator.  The packaging should be designed with extra protection (e.g. a thin piece of foam) to the open area of the fins.