VariTrane® variable-air-volume (VAV) units lead the industry in quality and reliability and are designed to meet the specific needs of today’s applications. Control comfort, indoor air quality (IAQ), noise levels, and energy consumption with the VariTrane dual duct terminal units. An optional factory commissioned open protocol BACnet unit controller eliminates the need for separate controllers, one for the heating flow air damper and one for the cooling flow air damper. VariTrane dual duct terminal units are universally handed and optionally equipped with factory mounted and commissioned unit controllers, which reduce installation effort and startup time.

Dual-duct terminal units are used in a special type of air distribution system where the main system has both warm air and cold air separately ducted to each terminal unit. The flow of both warm air and cool air is modulated, delivering air to the VAV zone at variable air volumes as well as variable temperatures. Since full capacity occupied heating is always available, control of additional local heat is not provided.