Armstrong Furnace R07489B003 Relay Extreme Durability: Rated for ambient

Extreme Durability: Rated for ambient temperatures from -30°F up to 140°F

Precision Grip: Features a high-strength universal V-bolt that secures the actuator to the shaft without the risk of slippage under full torque loads

Integrating this genuine Reznor safety switch preserves the system's operational integrity and meets specific manufacturer requirements for high-limit safety controls

Proper installation of this replacement heating gasket is a standard requirement whenever the blocked vent switch is serviced or replaced to prevent nuisance trips or unsafe operating conditions

How do I know if the D9863901 gasket needs replacement

Armstrong Furnace R07489B003 Relay Extreme Durability: Rated for ambientThe Armstrong Furnace R07489B003 Relay is a critical 24V electromechanical component designed for precise switching in residential heating systems. This HVAC blower relay serves as a direct replacement for specific Armstrong and Concord furnace models, ensuring reliable signal transmission between the thermostat and the high voltage blower motor or inducer. Operating on a 24VAC coil voltage, this relay is engineered for high duty cycles, managing the