You know that switch on or near your furnace? We'll tell you what it's for (hint: it's power-related) and how to use it.

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An HVAC pressure sensor is particularly important in the cooling cycle—which includes compression, condensation, expansion, and evaporation—where it helps regulate refrigerant flow. Proper airflow ...

Low-pressure controls are a common accessory added to many refrigeration systems. They are normally used to electrically cycle a compressor on and off; however, when and why they do so will vary based ...