Aprilaire 51 Relay 322838-752 Optimized Heat Transfer: Restores factory-spec

Optimized Heat Transfer: Restores factory-spec thermal output and system efficiency

Field technicians prefer this genuine Carrier part for its precise mounting alignment using bellyband or resilient ring mounts

this high-temperature gasket is engineered to maintain a gas-tight interface between critical internal components

ensuring exact fitment and high-pressure durability that aftermarket alternatives often lack

streamlining damper actuator replacement in the field

Aprilaire 51 Relay 322838-752 Optimized Heat Transfer: Restores factory-specThe Aprilaire 51 Relay is a high performance current sensing relay engineered for precision in 120V HVAC applications. Designed to monitor electrical load and trigger auxiliary equipment, this HVAC current switch ensures seamless synchronization between your furnace blower and accessories like whole house humidifiers or electronic air cleaners. This Aprilaire 51 sensing relay features a compact, durable design that simplifies the installation process