providing a reliable mechanical barrier in commercial and residential split systems

while the included straight connector simplifies the installation process for field technicians

Is the BLW1321 compatible with systems using the legacy BLW0572

the Lennox 26H61 Damper Switch is a critical component for ensuring the HVAC air damper is positioning correctly within the ductwork

How do I install the EVOLZ as a replacement for the B46000

York S1-7970-3281/A Limit Switch 320819-301 providing a reliable mechanical barrierThe York S1 7970 3281 A Limit Switch is a critical safety component designed for precise thermal monitoring in residential and light commercial HVAC systems. This high limit cutout switch features a 145F Open (FOP) and 115F Close (FCLS) configuration, ensuring the furnace heat exchanger remains within safe operating parameters. Acting as a normally closed thermal disc, the S1 7970 3281 A interrupts the burner circuit if airflow is restricted or