Retrofitting

Leaking ductwork can lose 20 percent or more of the conditioned air in a supply duct run. This loss is duplicated on the return air side, where a large volume of untreated air can be […]

A simple electromechanical time clock can operate the ventilation equipment on a constant schedule with on-off times for a 7-day routine. This prevents the equipment from running after hours or on weekends. The scheduled times […]

A dedicated fan coil unit designed to condition up to 100 percent outside air is called a unit ventilator. They’re common in classrooms and other heavy-use areas that require a large volume of fresh air, […]

An induction system has a central air-handling unit that supplies heated or cooled primary air at high pressure to the zone induction unit, typically located on an outside wall. The supply air under pressure goes […]