What is a PSC Motor | Part 2 - HVAC Know It All

We're back with part 2 - How does a PSC (permanent split capacitor) motor work?

Sit back and relax for this podcast episode where we'll meet with bonafide HVAC Celebrity and Canadian Gem - Gary McCreadie of @HVACKnowItAll

During this episode, we'll cover (1) what is a PSC motor, (2) what does PSC stand for, (3) pros and cons of using a PSC motor for your HVAC application.

0:44 What is a PSC Motor
2:47 How Does a PSC Motor Work
3:36 Capacitor Considerations for PSC Motors

PSC (Permanent Split Capacitor) motors are a type of AC single-phase induction motor with mid-level characteristics that make them capable of handling many different tasks. They are characterized by having both a main winding and an auxiliary winding (the latter connected in series with a capacitor) permanently engaged in the motor circuit. The capacitor gives the motor moderate additional torque during startup and while running. Having both windings connected simultaneously provides an approximation of two-phase operation, which contributes to smoother, more efficient running and higher overall torque than a single-phase motor can typically provide. Where energy efficiency is a primary concern, PSC motors are being displaced by ECM motors in many new products and installations. PSC motors are cost-effective, versatile motors without being exceptional in any area, with outstanding reliability due to avoiding the necessity for a centrifugal switch that can wear out over time. This makes them easily the most common motors in HVAC systems, used for fans, pumps, and compressors in small to medium applications.