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HVAC Electrical Switches, Part 5:
AC & Heat Pump Pressure Switches

In this training course, we discuss refrigerant pressure switch types such as low-pressure, high-pressure, and fan cycling switches. Operation, ratings, and testing are shown. These types of switches are found on some outdoor condensing units especially those with micro-channel coils. However, they are predominantly found on outdoor heat pump units.
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Measuring HVAC Indoor Airflow

This course provides HVAC students with the essential knowledge and practical skills needed to measure and then properly adjust blower motor airflow speed in residential and light commercial HVAC systems. 

Understanding the ratings and operation of refrigerant pressure switches is helpful for a quick diagnosis during a service call!

Keep increasing your knowledge because we all are continuing to improve during our career!

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