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Testing a Gas Furnace Pressure Switch with a Digital Manometer! & Why I Use This on Heaters!

In this HVAC Service Video I go over why I use this type of Water Column Manometer, how to use this for testing pressure switches accurately, and the many other uses for this tool such as reading gas pressure or static pressure across the HVAC system. I show you how the Fieldpiece SDMN6 works and how to confirm that your pressure switch is or is not the problem.

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