Economizers used in rooftop units and air handlers are multipurpose devices that can improve both the energy efficiency and indoor environment in a wide range of commercial buildings. By increasing the outdoor air supply when the weather is mild, air-side economizers can provide “free cooling,” which reduces a building’s need for mechanical cooling and usually results in substantially lower utility bills.
As a key part of the ventilation system, economizers also improve the comfort and IAQ in a building, provided they are applied and used correctly. But, like any other HVAC component, they also need periodic maintenance to ensure they are operating as intended.