Vent pressure

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William G Welch

• November 30, 2022 15:10
• Edited

I thought that "vent pressure" was measuring the pressure inside my vents. It looks to me like it is actually just measuring ambient pressure in the room. It doesn't change at all as vents are open or closed, it just reports the same pressure metrics as my Airthings pressure readings.

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  Sal

  • December 02, 2022 13:49

  To be mor rigorous, would you be able to pull in the data points into excel and graph them all on the same axis?
  Also, you would need to make sure that you calibrate them such that when your furnace is off, they are at the same pressure.
  Curious as to what this graph would look like. 

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  William G Welch

  • December 02, 2022 21:28

  I gave it a try, this is 12 hours of vent pressure readings, the grey bars are when my heat was running.

  

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  Sal

  • December 08, 2022 19:48

  neat graph, I think this shows pretty clearly that the heat being on or not is lost in the sensor noise. Seems to me like the vent pressure sensor is not statistically significant for controlling the system. I might try some of my own pressure tests to experiment with this

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