This OEM replacement part is natively compatible with Tjernlund HS1

technicians should always verify rotation direction relative to the fan pitch before final installation

making it a rugged choice for HVAC blower motor replacement

always verify your specific actuator's bolt pattern and stroke length

Siemens Building Technology GQD226.1U Actuator 323613-751 This OEM replacement part isThe Siemens GQD226. 1U is a heavy duty, 120V electronic damper actuator engineered for precise two position control in demanding HVACR applications. As part of the OpenAir GQD Series, this spring return rotary actuator delivers 20 lb in (2 Nm) of torque, making it an ideal choice for managing control dampers, economizer units, and residential zone systems that require absolute fail safe reliability. Built with a rugged NEMA 1 plenum rated housing, the