Variable air volumespeedrevJune 4, 2024 « Back to Glossary Index(VAV) system on heating and cooling system: Means of varying amount of conditioned air to a space. Maintains air flow at constant temperature, but supplies varying quantities of conditioned air in different parts of building according to heating and cooling needs. Related Articles:Glossary: VAVGlossary: VolumeGlossary: Air Volume« Back to Glossary Index