Furnace Pressure Switches Explained: Learn the Basics
The furnace pressure switch ensures your heating system runs safely and effectively. Without it, harmful gases like carbon monoxide could linger instead of being expelled properly. If you’ve ever wondered what keeps your furnace in check or what might be causing it to shut down unexpectedly, the pressure switch is often at the heart of it. What Is a Furnace Pressure Switch? A furnace pressure switch is a small but critical component in modern heating systems. Its principal function is to serve as a safety device. The pressure switch, located near the draft inducer motor, checks the airflow through the system to ensure the furnace’s opening system is working properly. If the pressure switch detects inadequate airflow or an obstruction, it shuts off the system to avoid dangerous operation. This mechanism is fundamental because your furnace relies on proper venting to remove harmful gases like carbon monoxide. Without a functioning pressure switch, these gases could linger in your home, creating a serious safety hazard. The pressure switch is also important for the safety of your family and the life of your heating system because it keeps the furnace’s parts from getting damaged by poor airflow. How Does a Furnace Pressure...
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