Are unit ventilators still a good option for classroom heating and cooling, or should schools upgrade to newer equipment?

TriState continues to supply Daikin unit ventilators (the historic Herman Nelson/AAF/McQuay product lines), which remain an industry standard for classroom-level heating and cooling. Many schools retrofit these with updated cabinetry and controls rather than replacing the underlying zone-by-zone approach, since it still suits room-by-room classroom control.