while the FLNR-series is rated for 250V

making it suitable for demanding mechanical room environments

this 40VA transformer provides a stable power supply for thermostats

leak-free seal within the whip chamber assembly

paint lines

Lennox 57W79 Pressure Switch while the FLNR-series is ratedThe Lennox 57W79 Pressure Switch is a critical OEM safety component engineered for precise inducer draft monitoring in Lennox gas furnaces. Calibrated to a 0. 70" WC activation setpoint, this green pressure switch ensures the combustion blower is establishing sufficient static pressure before allowing the ignition sequence to proceed. As a direct furnace pressure switch replacement, it resolves common fault codes related to airflow verification and