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The Zoneaire brand is currently owned by Friedrich. Zoneaire manufactured PTAC units in the United States and Canada, which were sold under various brand names.

If you are in need of a direct replacement for a Zoneaire unit, HVAC Brain has you covered. HVAC Brain offers a complete selection of direct replacements for Zoneaire PTAC units (through the wall air conditioners):

Zoneaire PTAC (Through The Wall Air Conditioners)