How Check Total External Static Pressure On An Air Handler Or Furnace

Total External Static Pressure is the pressure that is created external to the air handler or furnace in the duct system when the fan is operating. In this video we discuss how to check TESP (Total External Static Pressure and why it’s important to know. We have many homes in North America with high TESP, this is usually caused by undersized duct work, or systems that or not balanced correctly as far as air flow. If a home is having comfort issues or premature failures of ECM motors, checking TESP would be one of the first things on the list to check.

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