Capacitor-start, capacitor-run motors are often favored in HVAC systems primarily for:

Capacitor-start, capacitor-run motors are particularly favored in HVAC systems primarily due to their reliability and efficiency. These motors are designed with a capacitor that provides an additional boost during startup, enabling them to start under heavy load conditions. This is especially important in HVAC applications where they often encounter varying loads and need to start smoothly without excessive current draw, which can lead to reliability issues.

Once running, the capacitor also enhances the motor's efficiency by improving the power factor, reducing energy consumption and heat generation. This increased efficiency helps in maintaining optimal operation over time, resulting in reduced wear and tear on the motor, thereby enhancing its reliability across longer service intervals.

While cost-effectiveness, simplicity of control, and overall size reduction are important considerations, they do not encapsulate the key benefits that lead to the widespread use of these motors in HVAC settings. The primary attributes of reliability and efficiency directly contribute to better performance and longevity in the specific demands of heating, ventilation, and air conditioning applications.