What is Energy Star and what are the requirements for a product to be certified?

The Air Purifier has been tested and certified eco-friendly by Energy Star because it has been designed for a low power consumption and lower impact on the environment.  In general, products carrying the Energy Star certification consume 20-30% less energy than what is required by federal standards.  Fellowes Air Purifiers consume less energy than a light bulb in normal conditions and can be left on 24/7.