OmniAire HEPA negative air machines are used by general contractors, painters, wood refinishers, marine contractors andasbestos and mold abatement contractors. Our equipment is known for its smaller size, light weight, and reliability. OmniAireequipment features variable speed controls. The ability to precisely regulate the airflow is especially useful on smaller projects where exhausting too much air from the containment could cause the poly walls to be pulled away from the containment frame.