Individually packaged heating, ventilating and air-conditioning (HVAC) systems, usually placed on the roof and known as rooftop units (RTUs) , are widely used in small and medium-sized commercial and institutional buildings.
Individually packaged heating, ventilating and air-conditioning (HVAC) systems, usually placed on the roof and known as rooftop units (RTUs) , are widely used in small and medium-sized commercial and institutional buildings.