Hvac Troubleshooting - What is static pressure
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- Опубликовано: 11 июл 2024
- Air condtioner repair Louisville | Home Performance Solutions | Call (502)749-4969
I try to describe what static pressure is
I shot this video two years ago and forgot about it..
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I learned more in this video than I did in my 20 year career lol
Eddie Man your videos are the best...I had no idea what I didn't now about about HVAC until I saw your first video. You explain everthing so basic but with so much punch. Just seeing you use the latest meters and explaining how they function has made made me realize how much more there is to HVAC. Brother, a sincere thanks to you and all the others great guys that make HVAC videos. I'm still just learning HVAC so all the videos that yoy guys make bring all the reading and studying to life.
Good simplistic demonstration of static pressure, thanks much! I'm working simply as a homeowner to understand the basics and going through several videos so when it comes time I can either figure out one room deficient, or a vendor out to make an improvement, (perhaps that ends up meaning a booster fan given the home configuration), the home is efficient and comfortable where most needed with little loss. Every bit of information helps as does your informational/educational videos. Thanks much.
Thanks Eddie, you're probably the only video that gives 'ballpark' figures for static presssure in each area of the a.c. system. Return .1, Filter .1, Coil .2, Supply .1, totalling 0.5" w.c. I had a return with a 0.3+ wc not keeping up on hot days, so I added another return filter & grille. Now static is .17 and unit keeps up set temp on hot days.
Best video about static pressure,simple explanation is the key!!!
EDDIE I THANK YOU FOR SHARING THIS VERY IMPORTANT INFORMATION I WAS CONFUSE WITH STATIC PRESSURE
very helpful, broken down simple enough for almost anyone to grasp the concept.
Thanks for taking the time to comment on my videos. It sure makes me feel better about what I am doing on here.
Please make videos again. I really enjoy watching what you have to offer. Im sure you have helped many people, why stop a good thing?
Great tutorial and explanation Eddie. Simple and straight to the point. Take care, Brett
Bought my house new, but over a year I noticed this one supply run hardly had anything coming out. All the others were fine. I took apart that line and found that someone had stuck drywall and I think a whole box of nails into that line. Works good now. Enjoyed watching.
finally i knew what Static pressure is ..... and i guess i'll never forget that .... thanks.
Hey Eddie,
You are right, no one showed me much either when I started and I learned most of the 2% that I do know now from doing. I try to pass what I can to others when possible and your videos really help. I can see why most companys want techs with at least 3-5 years exp. And it's a really nice thing for you to take the time to pass on your knowledge. If im luckey I may now be hovering around 3% haha.
Thanks,
Hey Eddie !!!
You are doin everyone in the Trade such a Great Service , Take it to the NEXT LEVEL Brother !!!
I love the Analogy !!!
Great Job my Friend !!!
Eddie, great explanation. thanks for posting
Thanks for the explanation. So static pressure is the opposition to air flow in the system. Got it.
I love the bananas background. Love the color of ur walls
nice job eddie very good explanation ,with the guy pushing the boxes .
Fantastic!
Well done - 273k views and counting.
Will be posting on other Static Pressure video comments to ease the confusion that pours in with this.
👍
great stuff have duct design and velocity exam Thursday thank you very helpful
I wish my teachers would break it down like u do . Good job
Good job Eddie love the videos keep up the good work
Great illustrations!!
To bad you waited Eddie. It's very good and quite correct the illustration would have helped me way back when to understand it better. I had to mentally picture it as my mentor explaned how it worked !! It's a great video Eddie my other favorite HVAC dude in Louisville !!!
Great video!
Good job. Eddie for a second I thought I was in my physics class again.
Great video, thank you for the info dude!!!
Nice! Thanks, easy to understand.
Hi thanks for this explanation. I am learning more about air flow in HVAC. Your graphics were great. Can I kid you a little? If your HVAC career doesn't work out I am pretty sure you could become a graphics artist. The frown on the "unhappy camper" was great LOL Seriously, I appreciate your video!
Not a teacher.. lol
Thanks for the comment, i'm happy to be able to help!!
I know what you mean, it took me the same amount of time to learn about. Its crazy that measuring airflow is not pushed a lot harder.
This is what I like to hear!
Excellent tutorial.
Thanks for the information, it helped me out.
very good video to understand static pressure
Thank you for the explanation.
We both must have gone to the same ART SCHOOL. Good thing we had HVAC to fall back on.
nicely done. I'm subd to learn. thank you!
Nice explanation. Thank you.
wow it was that simple??? static pressure= resistance measured as inches of water coulmn. people out there just making it so complicated to understand
thank you 👍👍👍👍👍
how do we learn about bod plz upload the video to measure bod
This is not a very informative video.
Measure to atmosphere the following with a manometer:
1) airflow into fan with the TOTAL PRESSURE PITOT fitting.
2) fan discharge airflow with the STATIC PITOT fitting.
Added together these will give you Total Ext Static in pascals or water column etc.
Refer to fan curve to estimate volume flow of air through fan. Check this result against fan curve power line. With electric motor efficiency known you can convert to drawn amps. All these figures will be within 2to4% of each other.
thanks sir you did a great job
great explanation
great video
Thank you so much !
Very, very helpful.
excellent video
I'm glad it helped
Thanks def make that follow up video on where to take readings from, I have a suspect return that I might probe tomorrow.
Very well Eddie.
Thank you sir, if I can help just one person on here with each video I will be satisfied.
That was good - thanks. Static pressure sounds a lot more scientific/barometric than it is.
good lil video
You need to measure total static pressure. Drill a hole in the blower door, and find the hole before the cooling coil (good coils have two measuring holes with steel snap in buttons. If you measure here, on a clean coil, you can get a differential reading which can be converted to CFM across the coil. Most residential equipment is only rated for .5” TOTAL static pressure. This can be more or less, depending on what is listed on the data plate.This can be measured with a 1” magnahelic. It has a high and low port. Low for the return, high for the supply. There are special static pressure tips. The gauge automatically converts the readings to total pressure. Taking one reading at a time will tell you what side of the system might show a restriction.
Thank you!!
Wow, you really love bananas.
Seriously though, great job explaining. Don't forget that the pressure on the inlet side of the family is negative but you subtract it in the formula do it ends up being a positive number.
Really appreciate you taking the time to make these videos. You are shedding light on subjects that were touched on in class but were never explained in a real world setting.
Keep up the great work!
Thank you !
nice vid!
Super helpful
Thanks!
Its that you or your twin ??? LOL
Seriously great vid, now I understand little bit more static pressure.
Keep it up, Eddie!!!! Jorge
very good thanks
very good
nice explaination
I wasn't for sure if I wanted to upload this one but then I thought what the hell..
Thanks for watching!!
Thanks
No problem!
The main thing here is to maintain a certain airflow across the evaporator coil.
What you will want to do is record the blower speed that you are using and measure the static pressure, then you will need to get the performance data sheet from the manufacture. That will will show the cfm @ a different measured static pressures using different blower speeds.
You will need to adjust the blower speeds until you get something that is around 350-400 cfm per ton. I hope that this made sense.
Dear Eddie:
its a very nice simple video for understanding Static pressure Ps
But i would like if you explained the Total pressure because its the pressure you should order the fan on it... thanks a gain
I'd love to see the other pictures you draw under the diagnoses line🤣🤣
Hi Eddie, great videos, thanks for sharing your knowledge. My instructor told us about your videos. I have a question, is there any plus or minus you can have in static pressure drop across the blower?
With the new tools that are available today there's no reason for us not to be getting it right. So I decided to make these videos showing some of the tools that are out today and explain them in a way that most people will hopefully understand.
Thanks for watching..
Eddie
The numbers you're adding together and calling 'static pressures' are the 'component losses' which are deducted from the 'static pressure'. At the beginning, you referred to the .5 as CFM but I think you mean inches water column. It was a little confusing in those regards, but I like your metaphor using the guy pushing/pulling the boxes. That's helpful. I'm a little confused when it comes to AVAILABLE static pressure and EXTERNAL or TOTAL static pressure and how/where to take those readings with the manometer. I believe we are supposed to insert pitot tubes into both supply and return, add the numbers together and end up with EXTERNAL (or is it TOTAL) static pressure... and is that the number we compare to the nameplate?
Just read your comment by chance have you figured all that out? I would love to learn
It is in the making.. I just need to find the time.
This week through me a curve ball but its nothing that I cant handle..
Stay tuned...
Do you perform a MESP test on your installations ?
This video was shot 2 years ago and I believe it was the first video that I made but I was afraid to post it.. I forgot about it until today when I found it while clearing up some haed drive space
Good
8:20 is the point thanks sir
I regret now not putting it up. I did forget about it but I guess its better to be late than never..
Thanks for watching!!
are u a teacher?? if u say no i might call u a liar.. either way great video and phenomenal presentation man!! :)
I was about 15 pounds lighter here. I was riding my bicycle about 300 miles a week then. I need to get back in that groove..
Btw I am 41 so I am not to young nor to old right now lol
So to measure your total static pressure don't you want to measure after the filter right before the fan and as close to your first Supply as possible?
oh no, I am now professor Ed.. lol
Hi thanks a lot for the video,it helped me a lot. But, in the minute 2,10 the rope was not atched.LOL thanks
Static pressure is merely a measure relative ambient pressure. Two measurement can be subtracted to determine differential pressure across a restriction (or inducer). Room pressure, building pressure, and atmospheric pressure are often considered as baselines -- such that pressure in a duct might need to be measured with doors open and doors closed, to make a proper assessment. How well do supply and return "see" each other and do things like exhaust fans try to hamper the flow or fool measurement devices poorly dependent on static pressure to guess air velocity or volume. Even the engineers are fooled : like when circulations fans experience negative pressure gain in a negative pressure building and their pressure fan switch seems like it is broke. Some times air flow will have to be measured with a hotwire thermal anemometer probe to see what the actual results are. Static pressure is merely one of several tools to be used or abused.
If i added another return would increase or decrease my static pressure?
Good question, My GUESS is decrease on the return side and it may increase the pressure on the supply side depending on the ductwork over there.Its crazy confusing.
ive been in the business 18 yrs and no one taught me about static pressure so i took the iniciative 17 years later......... LMFAO
I maybe hitting the 8 or 9% mark, I have a long way to go myself lol
In a condo if floors 8 and below are blowing cold air in the halls and the rest of the floors are ok what can be the problem ?
does each floor has its own stat ? does each floor has it own automatic damper? just one unit supply OA to all the hall way ? make sure the VD to the problem floors are open.
Still confused🙄 so the amount of air that is pushing should be the same amount of air that is sucking
Sure like to have a banana from the back there.... ;)
Do you mean .5 CFM or .5 inches WC?
You seem a little confused.
I cannot access www. Homeperformancehvac.com
(c) I am limited to 500 characters on a reply and its not going to be possible to answer this question with them restrictions. I will summarize it and say that air does not flow in a square formation, it moves in a circular formation, so if you are measuring airflow in a square duct you will find more flow in the center, little on the sides and almost zero in the corners, therefor you must transverse the duct to get an average.
Loved the video, but couldn't take my eyes off the butt of the statue behind you with the black sombrero.
He has that affect on most people.. lol
Hey man you are good how can I contact you, maybe we can make some business for video requests?
The resistance is futile.
Duct Drarn
can you translate to Arabic plz eddie