Lennox 22W04 Blower Relay 340793-762 The Reznor 174809 Pressure Switch

The Reznor 174809 Pressure Switch is a critical OEM safety component designed for precise airflow monitoring in gas-fired heating units

always verify the primary line voltage at the boiler junction box before installation to prevent damage to the secondary windings

While you must never use a lower voltage capacitor

providing sufficient overhead for contactors

Lennox 22W04 Blower Relay 340793-762 The Reznor 174809 Pressure SwitchAs a field tested HVAC blower relay replacement, the Lennox 22W04 is a critical component for managing indoor blower motor operations. This Double Pole Single Throw (DPST) relay is engineered to handle high power hardware sequences using low power 24V thermostat signals. Whether you are troubleshooting an air handler blower motor that won't engage or a furnace that stays on after the call for heat has ended, this OEM part provides the precise