The Johnson Controls A350AA-1 is a core component of the System 350 modular electronic control platform

While barometric dampers are most accurate when installed horizontally to allow the weight to counter gravity predictably

This actuator is intended for replacement on Series B and C dampers only and is not compatible with Series A hardware

Key Benefits: Compressor Protection: Prevents liquid slugging and ensures only vapor reaches the suction valves to prevent mechanical failure

Direct immersion design ensures maximum thermal transfer efficiency compared to external wrap-around heaters

Heil Quaker ICP 1172826 Blower Vent Els PW 17895 The Johnson Controls A350AA-1 isThe Heil Quaker ICP 1172826 Blower Vent is a critical combustion air component designed specifically for 90+ AFUE 2 stage gas furnaces. Engineered for high efficiency HVAC systems, this assembly facilitates the precise movement of flue gases required for dual stage heating cycles. As an OEM ICP furnace part, the 1172826 ensures exact fitment and calibration within Heil, Tempstar, and Comfortmaker units, maintaining the pressure switch logic and