Aprilaire 4851 Relay 320788-704 providing technicians with a versatile

providing technicians with a versatile solution for legacy furnace repairs

preventing "nuisance" cycling of dangerous conditions

direct cross-reference for the DT01A antenna

or the AC system's inability to maintain setpoint temperatures despite proper airflow

Mechanical Versatility: The 35 lb-in torque rating and non-spring return operation provide stable positioning for specific HVAC zones and air handling units

Aprilaire 4851 Relay 320788-704 providing technicians with a versatileThe Aprilaire 4851 Relay is a high performance Blower Activation Relay engineered specifically for seamless integration with whole house humidification and HVAC systems. This critical component allows your HVAC control board to initiate the furnace blower independently of a heat call, ensuring optimal humidity distribution throughout the living space. Designed as a direct Aprilaire replacement part, it facilitates the necessary electrical handshake