OEM Lennox Dual Pressure Switch w/ Bracket — 14A48

The genuine OEM Lennox 14A48 dual pressure switch assembly with mounting bracket combines both high- and low-side refrigerant protection into a single factory component. It guards your Lennox compressor by opening the control circuit when suction pressure falls too low (low charge or restriction) or when discharge pressure climbs too high (blocked condenser, dirty coil, or fan failure), shutting the system down before costly damage occurs.

When the 14A48 fails, you may see the compressor refusing to run, repeated high- or low-pressure lockouts, cooling that cuts out on hot days, or the outdoor unit short cycling. A cracked switch body, contaminated contacts, or drifting trip points are typical culprits, and the pre-mounted bracket makes this assembly a clean, direct swap for the original.

OEM matters because the 14A48 is calibrated to both the high- and low-pressure thresholds Lennox engineered for your specific equipment. Aftermarket dual switches with generic set points can nuisance-trip or fail to protect the compressor at the correct pressures. This factory assembly delivers exact calibration, proper bracket fit, and complete refrigerant-circuit protection for your Lennox system.