A Tennessee district faced an old school HVAC challenge: aging ventilators and space constraints. So this team tried a new-school variation on common VRF retrofits to deliver improved efficiency and critical IAQ: they decentralized the outdoor air, combining enthalpy wheel and VRF components within a single classroom enclosure.

An onslaught of natatorium retrofits are coming, as a large wave of dehumidifiers reaches the end of its collective lifecycle.