Mitsubishi Electric’s City Multi VRF Dedicated Outdoor Air System preconditions outside air for introduction into downstream HVAC units, lessening the load on the primary HVAC system. Suitable for new construction and retrofit commercial applications, the system accepts outdoor air temperatures from minus 4 F to 109 F and preconditions up to 1,200 cubic feet per minute of air. Line lengths from reach up to 541' one way. •