An air terminal for a heating or air conditioning system including a housing, a fresh air inlet in the housing to supply a fresh airflow to the air terminal, an outlet diffuser at the housing to allow airflow from the air terminal into a conditioned space, an inlet diffuser located at the housing to allow return airflow from the conditioned space into the air terminal, a coil located in the housing to condition the fresh airflow and/or the return airflow prior to the fresh airflow and/or the return airflow flowing into the conditioned space. A fan is located in the housing to urge return airflow through the inlet diffuser and across the coil. The fan and the inlet diffuser are located at a first side of the coil and the outlet diffuser and the fresh air inlet are located at a second side of the coil opposite the first side.

There is disclosed a system and method for controlling a multi-zone dual deck air handling unit. An outside air temperature of the air handling unit is received. Zone demands associated with zones are received in which each zone demand corresponds to a particular zone. A cooling deck of the air handling unit, a heating deck of the air handling unit, or both, are engaged in response to the outside air temperature and the plurality of zone demands. Zone dampers associated with the zones are positioned based on the zone demands in response to engaging the cooling deck and the heating deck concurrently. Each zone damper is position at either a maximum cooling position or a maximum heating position. The zone dampers associated with the zones are modulated based on the zone demands in response to engaging the cooling deck or the heating deck distinctly.