All day every day. Best HVAC Know It All vid ever!
@hvacsimplified
2 жыл бұрын
HVAC SIMPLIFIED is checking it.
@HVACKnowItAll
2 жыл бұрын
Haha! Thanks!
@erickmunoz9993
Жыл бұрын
Not enough are
@KicksNbud
2 жыл бұрын
Maybe 20% of residential techs are doing this. I have never seen an industry so polluted with sales gimmicks and lack of training. It’s embarrassing.
@KicksNbud
2 жыл бұрын
Great video though. 👍
@HVACKnowItAll
2 жыл бұрын
Agreed and thank you!
@eggsnham
2 жыл бұрын
20% is generous. I just moved into a management position at supposedly the biggest and best residential HVAC company in the area. What I found was that out of approximately 61 techs, 4 or 5 are actually competent.
@justinwallace390
Жыл бұрын
It is sad. And I am caught up in it
@ericagney3360
Жыл бұрын
Agreed, we have all of our technicians trained on static pressures and importance of airflow where I work. It’s amazing the lack of knowledge when it comes to ductwork and how it works in unison with a system. If the Duct ain’t right, unit will never work right.
@topher8634
8 ай бұрын
I was always taught to point the pitot tubes into the air stream, like you did, its easier for me to remember it that way.
@F-150RR
2 жыл бұрын
That was very very helpful, Im going to start doing this . Thank you so much for this great informations as usual and happy hvacing buddy
@HVACKnowItAll
2 жыл бұрын
You're welcome, I appreciate the channel support!
@Straycurrent
2 жыл бұрын
A clear and understandable presentation. Thanks!
@HVACKnowItAll
2 жыл бұрын
Thank you!
@richardbatters
11 ай бұрын
Great video Gary. Pulling the High Limit Switch to place a supply Static Pressure Probe there is a Great tip for when you come across a Cased Evaporator Coil. Perfect spot!.
@marcusgardner7640
10 ай бұрын
How long can the furnace be run without the high limit switch in? Should I not let it get to phase 2 heating?
@jiggaman754
3 ай бұрын
Very Important and opportunity to make more Sales with Integrity and Honesty
@wirefeed3419
9 ай бұрын
Good explanation for checking static pressure which is rarely done or payed attention to. I cannot believe you actually measured .5 “ with the ridiculous filter blocking of much of the free return air at the base of the drop. Luckily the furnace is only 60 - 80,000 btu which is running lower CFM .
@Jon-hx7pe
9 ай бұрын
80 000 btu is a big furnace when talking condensing! normal sized homes can heat on 40 to 60 unless a basketcase or where it drops below -30f.
@rzh3443
Жыл бұрын
I asked if the installing company for my Rheem system could check static pressure as I had my ECM module fail after 4 years. They said they don''t that and don't "normally" carry a manometer with them (???),As temporary measures,, I cut a new return inlet on second floor and went to lowest filter rating above the 99 cent "models". I religiously change the filter after two months- maybe overkill, but the ECM is big bucks now that the 5 year warranty is over. In future any sales guy will have to measure the pressure and show me that it meets the new furnace/Ac requirements.The older furnaces had aircraft blower motors so it probably didn't matter what the pressure was.With knowledge I think I'll splurge on a manometer and test it myself!
@hvacsimplified
2 жыл бұрын
Thanks for this.
@HVACKnowItAll
Жыл бұрын
You're welcome
@jasonandes4235
2 жыл бұрын
Wish more techs would look past that pretty blue light opportunity and hook an extra gauge or two into the ductwork.
@HVACKnowItAll
Жыл бұрын
Yep!
@72jarul
2 жыл бұрын
Great video!
@HVACKnowItAll
2 жыл бұрын
Thank you!
@Funboyy123
2 жыл бұрын
If you wanted to test pressure after the indoor coil you would just put the static pressure tip above the coil in the duct work somewhere correct?
@HVACKnowItAll
2 жыл бұрын
Yes
@jaymz0074
Жыл бұрын
Great video.
@HVACKnowItAll
Жыл бұрын
Thank you sir
@jaymz0074
Жыл бұрын
@@HVACKnowItAll you're welcome
@graphic9876
Жыл бұрын
Hi Gary, thanks for the video. Its super helpful. Question: When measuring external pressure do you also measure the same for each Zone with damper on/off? I am thinking this would show if any duct work in any zone is having less air flow and building up pressure on the air handler...right?? I am assuming the pressure check probes still go in the same spots (after air filter) and (before the coil) when testing each zone as well
@HVAC544
2 жыл бұрын
When you have a furnace with a coil on top what are the normal static pressures you see in the field? Obviously the unit says its rated 0.5 in WC. That doesn't include the coil; with some of the new coils and matchups you can lose as much as 0.3 in WC through the coil. Combine that with a bad filter setup of 0.2 in WC you already are at 0.5 and you still have the ductwork, grills, and dampers. I typically saw 0.6 to 0.9 in the field. Most of the ductwork I came across was undersized for furnace with a coil. The newer blowers are nice because they can still deliver decent airflow up to 1 inch of static. I did a bunch of testing on my own system and was able to lower the static to around 0.7 or 0.75. Dropped cfm to 350 per ton and put in a 20x25x5 media filter getting a 0.1 drop across the filter. I wanted to redo the plenum because its undersized right now 20x8 for 1000cfm is too small.
@TJ-22
Жыл бұрын
How about your field measurements of horizontal furnaces? What is a normal static pressure that you see in the field?
@twilks7878
Жыл бұрын
I would install a wider coil that had a txv
@zreap5898
Ай бұрын
I'm having a hard time getting the right static pressure. I'm measuring before coil and after filter and I get a 1wc so I lower the speed of the blower to get my .5wc and now the air flow just seems too low I feel like I'm going to freeze the coil being too low or set off a high limit switch when heating the home. I'm just confused and need guidance.
@marcusgardner7640
10 ай бұрын
Is there any worry with having the furnace run without the high limit switch in? Should I keep it under a certain time or avoid going into the heating phases with it like that? What phase do you have it in to test static pressure? Phase 1? 2? Recirc? New to this and want to try this myself. Also, if I can’t splurge for the y jack, what kind of manometer will do the job?
@HVACKnowItAll
10 ай бұрын
It's only a brief test that you do with the fan running. You don't need to have heating engaged
@andrewnielsen8032
2 жыл бұрын
Why would it be a problem if it was below .5? Wouldn't that just mean that it has a little more airflow?
@HVACKnowItAll
2 жыл бұрын
Not saying it's always a problem but could be in some situations
@Weztcoastguy
10 ай бұрын
I check esp and temp rise on every service and I’ve never seen a positive pressure on the return. Your manometer looks like it’s displaying a positive pressure on the return? Am I missing something?
@HVACKnowItAll
10 ай бұрын
It's in the negative port, so the display is a negative pressure.
@chadrayl9648
Жыл бұрын
Thought you were supposed to go before filter then after? I’m new so I’m just asking lol
@HVACKnowItAll
Жыл бұрын
Thats checking filter pressure drop only what you're describing. I'm checking total external static pressure
@bigdogg7947
Жыл бұрын
you're a beast!
@mikewest712
Жыл бұрын
If I had an HVAC question where should I ask ?
@Jon-hx7pe
9 ай бұрын
on an online forum
@TopsznTrx
Жыл бұрын
Good informational video but what in the fuck is going on with that filter😭😭😂
@HVACKnowItAll
Жыл бұрын
Nothing, it's part of the stand!
@michaelpicard6792
11 ай бұрын
Shouldn’t this be done during install? I just had this done and they drilled a hole in the cabinet and put a rod in it and pushed the other rod right into the return ductwork and took the static reading that way. Overall the reading was grossly high at over 1.0…new system was installed one year ago. They came out for the one year checkup and now say our ductwork is too small and want 20K to replace it all. Small 1K square foot home
@macthemec
3 ай бұрын
You got a hack, they probably oversized your furnace if you got 1” of wc, should only need 20,000btu to heat that place in a temperate climate
@kevinlawson8124
Ай бұрын
Also, dirty blower motor squirrel cage!
@rennie7823
2 жыл бұрын
I need a help I started learning but not understanding_i need the ohm's text chat and voltage chat plz join
@stephwaylonwells3218
2 жыл бұрын
👍
@pitaeata8493
2 жыл бұрын
return air static pressure should be negative...not positive. you are a good teacher but something isn't right today.
@HVACKnowItAll
2 жыл бұрын
It is negative, when it's on the negative port it just shows as a number.
@pitaeata8493
2 жыл бұрын
@@HVACKnowItAll Hmmm. Well, then Yellow Jacket should add the dash in my opinion.
@HVACKnowItAll
2 жыл бұрын
@@pitaeata8493 every manometer I've used is like this. If you put it on the postive terminal with a negative pressure. You'll see the negative symbol. On the negative terminal, there's no need for a negative symbol.
@staticpressurenerd5182
2 жыл бұрын
When looking at static pressure we look at the absolute value of the number. The negative symbol is irrelevant.
@Syphonfllter
Жыл бұрын
Lol, sure bud.. go tell yellow jacket they've somehow had it wrong the whole time.
@Ray-gf4vf
2 ай бұрын
the whole static pressure is a shit fools gimic to make more money
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