In their article entitled “Do OA Economizers Make ‘Cents’ in Hospitals?” Koenigshofer and Roberts detail the costs and savings of utilizing outside air economizers in hospital ventilation systems. They concluded that these systems do not make “cents” in hospitals. The findings have major implications for building codes throughout the U.S. 

The packaged DOAS has capacities from 3 ton up to 70 ton at up to 20,000 cfm, providing 100 percent outside air.

he device allows for control of the air velocity in ventilation ducts and air conditioning systems. Available for duct mount as well as with remote sensing probe, it measures air velocity up to 20 meters per second.

The National Air Duct Cleaners Association (NADCA) offers two certifications; the Air Systems Cleaning Specialist (ASCS) certification and the Certified Ventilation Inspector (CVI) certification — credentials that are internationally recognized and known for showcasing an individual's enhanced knowledge and skills related to HVAC system hygiene.