The capacity of the Health Guardian varies depending on which speed you select. Speed 5 in an open interior can purify up to 3,000 sq. feet. Owners may wish to operate at lower speeds. Below is a graphic representation of its purifying capacity under normal circumstances.
Note how energy efficient the Health Guardian air purifier is. At speed 3, it consumes the same amount of energy as a single 100W incandescent light bulb.