Lennox 22W04 Blower Relay 340793-762 this "one-pipe" device is specifically

this "one-pipe" device is specifically designed to eliminate inaccuracies caused by air stratification in large supply or return air ducts

It is used primarily in 4

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

By utilizing the 1/16" end

Larger sizes require different replacement part numbers

Lennox 22W04 Blower Relay 340793-762 this "one-pipe" device is specificallyAs 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