PWM
PWM (Pulse Width Modulation) is a technique used in HVAC systems to control the speed of devices like fans or compressors by adjusting the power supplied to them. Instead of running at full power all the time, the motor receives a series of rapid on/off pulses, with the duration of the “on” time determining the speed. This allows for precise speed control, improved energy efficiency, quieter operation, and better adaptability to changing system demands, such as airflow restrictions or varying heating and cooling needs.
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