Tech Tips: Static Pressure Testing

[strunkmp]

The best explanation of measuring duct static pressure out there. And I have watched them all. Thanks

[martinheatingcoolingmartin]

Excellent explanation! I will need to rewatch several times though for it to sink in. But seriously thank you! Because as others have said, this is the best out there to do with static pressure.

[michaelmckenna]

More static pressure, less CFMs. Love it.

[Devilsadvocate]

Thanks for the straightforward explanation. Just needed a quick review and you did it.

[jeffhoger]

Enjoyed the video. Your explanation was really helpful. Especially when you showed how to tell if the issue was on supply side or return side. 😊😅

[StepehenA]

Nice job Brian. Good review of the basics. - American Weathermakers

[davidjensen]

Great explanation of static pressure and ductwork design. Very helpful for a GC superintendent. Thanks

[thomasjohnson]

Before drilling holes into your furnace....see if you can unscrew the heat exchanger high limit switch for TESP probe access.

[gabrielm]

Man great video! It all became so clear to me after watching this. Thank you for such a great explanation and keeping it short and simple

[crazycontroller]

This is an amazing explanation. Really helpful. Thank you so much

[onetime]

Great explanation for static pressures 💯👍

[rtsolution]

I am fighting my system currently which is what brought me here. I purchased a nice set of field piece wireless probes. I am upwards of .89 tesp with the majority in my return duct. .12 in my supply, .21 a coil, .10 filter, remainder is supply ductwork.

[coolramone]

4 probes: A. Top of heat exchanger (box), B. Bottom of blower fan (box), C. Top of coil (box), D. Before Filter.

[ericviele]

Yep, best explanation out there. You got a like and a subscriber. Great content!

[rodpratt]

I’ve worked for companies that never check the static pressure ever!

[chodkowski]

Look at the filter the engineers design and test their air conditioners with. They use the very light blue filters. Using a filter with a high merv rating causes your fan to use more amperage, running hotter and cutting down its life expectancy and cutting down air flow.

[mohamedmesalem]

Really appreciate it, Very useful videos.

[tommason]

I was most concerned about the coil drop since cleaning the A coil is a huge job. And I would like to share what I have done to measure the coil drop, which is very easy to do. You do not need to drill anything and you do not need to buy the special probe either. Just use the screw hole by taking out a screw. To measure underside of the A coil, I unscrewed one of the easily accessible screws from the triangular A coil cover blocking the underside. To measure the top side of A coil, I unscrewed one of the A coil housing cover screws and measured there. In both cases, I pressed the open end of tubing from the manometer ($35 from Amazon) right against the screw hole tight and read the meter. In my case, I measured 0.16 (top side) and 0.25 (underside) which gives me drop of 0.09 WC. I was afraid my A coil would be clogged up a lot after 26 years of use without cleaning at all but this measurement tells me it is wide open for which I am so happy not having to do the big job of disassembling the whole A coil and cleaning it up and reassembling it.

Just for sanity check, I also bought Anemometer ($16) from Amazon and it measured anywhere from 550-800 ft/m air speed out of all the vents which seem very reasonable based on what others measured on brand new system. This sort of confirms that my A coil is pretty clean even after 26 years of use without cleaning at all, which is quite surprising. I did not even replace the filter either. I simply vacuumed the filter every year. I hope I am not dreaming.

[peterrivas]

Could it have also been a problem with supply blower? Weak motor or wrong blower speed?

[keithcastleberry]

Can one drill a hole on the back middle of furnace centered between the exchanger instead of the side??