1.has top energy efficiency rating
The appliance is either Energy Star Certified, or has an EU energy efficiency rating of A++ or A+++. This means it consumes around 20-30% less energy than is required by the minimum local standards for energy efficiency.
The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
A reversible door is useful if the machine is in a corner, so you can make it open more conveniently. It also means the door is easy to remove and can be replaced if needed.
4.annual power consumption
The more power per year a device consumes, the less energy efficient it is, making it more costly over time.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.