Whole-house products such as the nano Induct and Bi-Polar 2400 will turn your central heat and air system into a "whole house" air purifier by treating the air in every room the air conditioner supplies air to.
The portable units are single-room purifiers and cannot reach the entirety of your home. The iAdaptAir and G3 Series air purifiers are excellent for use in high-traffic areas, such as a waiting area in a doctor’s office or a living room in a family home.