OEM Lennox Run Capacitor 20 MFD 370V Oval — 14Y71

The 14Y71 is a genuine OEM Lennox run capacitor rated at 20 MFD and 370V in an oval can. This capacitor supplies the sustained phase-shift current that a single-phase blower or fan motor needs to maintain efficient rotation, keeping airflow steady and holding motor amperage within safe limits. Built to Lennox factory specifications, it delivers the exact capacitance your system was designed around.

When this capacitor degrades, the symptoms are hard to miss: a motor that hums but won't start, sluggish or hesitant spin-up, overheating, weak airflow, higher electricity use, or a bulged and leaking capacitor top. Because a failing capacitor makes the motor draw excessive current, replacing it early prevents overheating damage and avoids a much costlier motor failure down the line.

Using the OEM 14Y71 is important on Lennox equipment, where correct capacitance directly influences motor efficiency, temperature, and service life. Aftermarket alternatives often fall outside tolerance and wear out quickly under continuous load. This factory-matched capacitor ensures the proper rating, an exact fit, and dependable long-term performance. In stock and ships same day before 3PM CST.