HVAC - gas pressure

Furncae repair Louisville | Home Performance Solutions | Call [phone]
Here is a series of videos that showcases the testo 330 and the 320. The Purpose of this video is to show you the differences between the meters so that you can decide which one would be better for you.
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[@quimshtgclg]

Thanks Ed ,Appreicate the info.

[@quimshtgclg]

So the draft test on the exhaust of the unit would be a positive measurement ?

[@EddieLeverich]

on 90 percent and above furnaces they will be positive and 80% furnaces it would be negative.