The CH-STM36AHU24V Cooper&Hunter 24V Communication Stud Mount Air Handler is engineered for maximum installation flexibility with 36,000 BTU, the front return this unit is perfect for installations in smaller spaces and apartments. Featuring 24V communication, this air handler is fully cross‑compatible with third‑party outdoor units, including both cooling‑only and heat pump systems. Its refrigerant flexibility further enhances compatibility, making it an ideal solution for replacement projects, system upgrades, or new installations requiring dependable performance and seamless integration.