HVAC Training Basics for New Techs: Gauges, Pressures, Temps, Check the Charge!

[@devtheedudee916]

30 years old and I’m jumping into the HVAC career field start school end of the month . Wish me luck ! It’s never to late !

[@multiskilledelectrician1]

All the best!

[@tcminnis4707]

right behind u at 30 next month

[@Hopefullymarried]

46 here! I have 3 weeks of school left....part time work starting soon and will allow me to slowly develop so i can jump over full time...nervous but relieved :)

[@stevensullivan1390]

30 too how is it going.

[@JoseDiaz-hm3iy]

I've discovered that it's never too late for almost anything. I was almost 55 years old when I started doing drywall work, which led me to wall construction, electricity and plumbing. I had never done any construction work before that. Since then, I've taken a course on solar system installation, free at a local adult school in my county. I've also learned sewing machine repair from KZbin videos -- I was recovering from what I believe was a spider bite in my left foot, which was terribly painful for about 6 months. So, I was confined to the inside of my home. Right now I am learning everything I can on grammar and vocabulary, while learning touch typing and MS Word. Next projects are Adobe Photoshop and Adobe Premiere and, further down the road learn to play the harmonica. The way I look at things is that it would almost be a sin and a crime to waste all of this new technology, and all of this virtually free information. 68 years old and still wanting to learn and know more.

[@Caveman_910]

32 years old, already 8 weeks into the career. Learning alot so far. But still alot more to learn. Trying to come here and watch at least reviews everyday while I'm home 😂 1am and I'm still wanting to learn this. I don't have class today so I'm good.. hope everyone who is going in and or already in the career the best of luck on your future.

[@jacobkemphfer1802]

August 25th I start my school training going into HVAC, I'm gonna bust my butt trying to learn as much as possible and not think about how hard it might be, but stay motivated and push through💪

[@SkyguyFilmsZooruvfilms]

i was told this was a much easier job compared to most trades

[@01ibrahim1]

@@SkyguyFilmsZooruvfilms how is it so far.

[@cesarleeroy5418]

Im 27. I start going to school sep 13 to be a HVAC technician Im nervous cause I have a hard time getting things in my head and have a hard time learning the only thing I worry about. Im not smart but this is something i wanna do in life I finally found something I wanna do in life. Well thanks for the video ima replay this all the time

[@jizzle122]

Same here bro my orientation is Tuesday for hvac training and I feel the same way u do I'm 26

[@cesarleeroy5418]

@@jizzle122 how was it bro?? I went yesterday Im nervous and excited. We got this bro💪🏾💪🏾💪🏾💪🏾

[@feltylifts4516]

How is going bro ? Doing well at school

[@adrianwilliamson4446]

Did you complete your course?

[@cesarleeroy5418]

@@feltylifts4516 pass my refrigeration course with a 85% , Im now im retaking my electrical course I had to retake it but so far im doing good.🙂

[@benjamindyer7348]

Just started as an HVAC technician a few months ago, my coworkers would probably make fun of me if they knew I went home and watched videos about HVAC lol but these videos are extremely helpful for me out in the field

[@twnl1096]

Don’t feel bad for wanting to gain knowledge, especially if it’s in your field of work.

[@tommy2buttz668]

Smart

[@ronniebuchanan6575]

Good move.

[@aimgood9097]

Getting in the field myself no problem with being ahead. Respect

[@jollyscaria1922]

Big comenna @^$%%%% wamtimg lonwleged vaxed

[@domkazi7845]

First day on the job at 30 never done this before but according to the guy I'm training under this is good information

[@thundersquigg]

How’s it going broo?

[@mikethegodson4250]

I’m 35, I’m outside the prospective job now for a 2nd interview. I have zero hvac experience BUT they can’t find good men…that’s where I come in! Wish me luck!

[@2real173]

Hope you got it bro

[@thecrazyjuandiego]

My first day tmr I’m 17 wish me luck!! I know nothing about HVAC

[@acservicetechchannel]

Sweet, just work through it and learn learn learn. Gain as many skills as you can and work hard. I wish you the best, thanks!

[@qomco]

Start young! Dont let these old guys fool you, they had their 1st day on the job too👍

[@alexpolhemus7601]

Give updates I’m doing the same when I turn 18

[@rayalejandre4920]

I’m 4 months in, just gain as much knowledge as u can

[@robertant7768]

If you stay at it by the time your 25 your will be making big money dawg, you can study all you want but the field is where your gonna learn,!

[@Vinhdao8090]

Starting my work tomorrow with no experience as a helper. Wish me luck!!!

[@acservicetechchannel]

You got this!

[@Hale1990]

How much are you getting paid as a helper?

[@mtalamantes100994]

how is it going so far? I'm currently in school for it!

[@etlawson6939]

Here is hoping that you are doing fine.

[@noneofyourbusiness1114]

How's it going? They started me in construction. I'm currently trying to self teach myself knowledge such as this so I can attempt to get into the service department with 12 to 24 months.

[@akamegakill8903]

I am 20 and starting my classes next month I know nothing about this I didn't see myself in college this will be the first actually man thing I do I grew up soft but I will try my best.

[@michaelcostello6991]

very usefull. This is a great addition to the class room where you may not have time to absorb all the information in a demonstration.

[@acservicetechchannel]

Glad it was helpful!

[@colekindron7226]

I love this because I use superheat and subcooling on a daily basis dealing with chillers all the time. This video gave a very good explanation as per the troubleshooting guide on a basic system, and it's amazing for all you commercial and residential guys out there. It's crazy to think about how amazing this industry is, and I'm grateful to be in it and learn something new every day. This was a really good refresher with just enough theory put behind it to give a great understanding.

[@acservicetechchannel]

Thank you so much for your encouragement!!!

[@jacobloisel2015]

I’m 17 I’m in hvac learning right now best advice is learn the tools get organized and learn the steps and then apply what you learned slowly

[@acservicetechchannel]

Absolutely and be hungry to learn more and work at your best, thanks!

[@briannoriega544]

My first day is also tomorrow and I’m 29 so wish me also good luck lol. I went to school but they didn’t hardly teach us anything. I know basic things but not into detail.

[@breneliortega2429]

Doing an apprenticeship soon for a company here in California. Super excited to start

[@acservicetechchannel]

That is awesome!

[@curtisthorne9448]

I'm reading alot of the study of hvac and was reading on my own about the studies and wanted to reach to others in hope of learning hvac better. If anyone interesting in sharing paper work and talking it over comment please...

[@gregbradshaw9415]

This is an excellent video! Currently in trade school going for commercial HVAC. Very happy to subscribe 👍

[@acservicetechchannel]

Awesome! Good luck in your schooling!! Make sure to check out the free quizzes and articles on acservicetech.com to learn more!

[@jamison6801]

I’m 15 been working for a few months but this is helpful

[@yrnmxni8530]

In trade school rn for HVAC only 18 fresh out of high school. Keep grinding guys🫡

[@acservicetechchannel]

Thats awesome, yeah keep pushing!

[@etlawson6939]

This is my work account and I'm also subscribed in my personal phone. Great content.

[@brianmcdermott1718]

Great details in the video. Thanks Craig.

[@acservicetechchannel]

Glad it was helpful!

[@ianship5058]

I did a 5 year apprenticeship before I was a qualified refrigeration engineer.

[@livingyourbestlife711]

excellent explanation and thank you for sharing! always verify SH and SC on AC systems!

[@acservicetechchannel]

Glad it was helpful!

[@danstarnes2375]

Excellent teaching as always! Thank you for sharing your knowledge!

[@acservicetechchannel]

Glad it was helpful!

[@danny4982]

Great video for someone getting started. Thanks!

[@acservicetechchannel]

Thanks Danny!

[@chesstime356]

As always I like your videos and I do maintenance on residential units hopefully one day become fully Service technician… thanks

[@NoneFB]

You really KNOW your subject matter!

[@joeyg3947]

Great video. Would have been perfect had you inserted the actual numbers in your example to determine if you needed to add/recover refrigerant.

[@jmichel70]

Thanks for the videos. Just got my books and cards,

[@acservicetechchannel]

Hope you enjoy it!

[@Raygilley10]

Thank you for the knowledge you apply your easy to go along with and I think I’m gonna purchase the books for sure

[@acservicetechchannel]

Awesome! Thank you!

[@felixe.cerpasr.4994]

Hi,Craig,I have two questions for now the first is when you connect gauges in heat pump where you connect the high hose gauge straight to reversing valve fitting or to fitting of the liquid high line and low side hose gauge to low side vapor fitting.The second question is about the vapor state of refrigerant when you use it and how to proceed to let the vapor enters to the sister.Graig I wil appreciate you prompt to me.

[@ronaldhaefner8515]

Spot on video. Not that it is hard to remember but an old refrigeration tech taught me years ago it is the direction of flow, the suction temp coming to the unit and then the suction pressure at the compressor. Then the pressure exiting the compressor then the temperature of the discharge line of the unit. Absorb heat is superheat and condensing is super cooling. Kinda quirky but helped me to remember the order.

[@bertellijustin6376]

For me it was what I call the rule of opposites. High pressure high temp you check sub cooling, cold is the opposite of hot. (If cold was an actual thing) For the low pressure/cold side we check super heat, same reason. Not sure why but that’s how I got it to stick in my mind.

[@coolramone]

AC Service Tech iz … da best.

[@omarhernandez6066]

21 and in school thank u this helped

[@DMH29]

In Australia, we measure subcooling and superheat as Kelvin not degrees C or F. Aiming for roughly 5-7k of superheat and 4-6k of subcooling. I’m struggling to get it through my head what 12F subcooling would actually be in Kelvin. Any ideas? Thanks mate.

[@DMH29]

Scrap that. Just did the math. Converted your F temps to C and then calculated it that way. 104f - 92f would give about 7k in the Aussie way.

[@martysomoco]

Excellent video!

[@acservicetechchannel]

Glad you liked it!

[@alejandrovillalta2811]

9 hour commercial work days with a team of veterans then I turn around n school 5-10 so I can really start grasping these concepts it’s not easy I will admit

[@zRut]

Is it truly worth getting into if your competent hard worker with good self motivation change is scary and I’m thinking about switching occupations

[@TAmoney98]

Anything can be worth it if you are a competent hard worker.

[@jonnycsuperplumb765]

Another great tech vid..cheers

[@acservicetechchannel]

Glad you enjoyed it

[@r.s.1348]

maybe i missed this but what is the disposition of the contaminated refrigerant, when the saturation temp indicates contamination in the recovery tank?

[@johnnyriser8519]

Excellent explanation!!! Thanks for sharing!!

[@acservicetechchannel]

Glad it was helpful!

[@NoorRefrigerationsystem]

wow amazing video I love this channel ❤❤❤❤

[@acservicetechchannel]

You are so kind

[@fassym7372]

Awesome explanation, learn a lot, Thank you

[@acservicetechchannel]

Glad it was helpful!

[@marcusbrown9018]

My first day May 9th. Wish me luck guys I’m 22.

[@acservicetechchannel]

Awesome Marcus! i hope you work with a knowledgabke and kind tech!

[@_Vinny_the_singer_]

Hey I’m 21 I just started like a month ago i wish you luck you’ll be fine and you’ll do great

[@anthonybuchanan5329]

Thank you for yr teaching I love it

[@acservicetechchannel]

So nice of you

[@jameskennett8666]

awesome videos and explanation thank you!

[@acservicetechchannel]

Thank you for watching!!

[@JoseRodolfo22]

does the superheat and subcool method work on on refrigerators and freezers such as helmers, specifically ones in labs? when checking for charge

[@Tunex084]

This is so helpful. Thanks very much 👊🏾...

[@acservicetechchannel]

Glad it was helpful!

[@antonyphilip2642]

Very informative, thank you Sir

[@gabrielguerro8449]

I could be your grandfather and I'm learning this.

[@frnkpol2903]

Excellent video, thank you.

[@gustavocalderon8153]

Thank you so much for sharing.

[@acservicetechchannel]

You are so welcome!

[@professorb3744]

The way you say R-410A is very interesting. Where is that accent from?

[@donnierobertson3088]

Nice job

[@acservicetechchannel]

Thanks!

[@jimbola77]

thank you so much for sharing.

[@acservicetechchannel]

You are so welcome!

[@angelgutierrez5648]

Hey I have a question I would like to know if the pressure inside the lines of a refrigeration system are constantly moving the refrigerant lets say at 18 bar or is the pressure stagnant at 18 bar.

[@angelgutierrez5648]

What I’m trying to say is within the lines of the system Is the refrigerant moving at different pressures during its phase change ie 18 bar after compressor 14 bar after evaporator back to 3 bar after expansion valve or is it all one pressure it’s moving at

[@randymoreno9345]

Yes the refrigerant in a system is moving at different pressures during different stages of the Refrigeration cycle.

[@angelgutierrez5648]

@@randymoreno9345 how much faster ?

[@josephsantos7047]

Okay so we are learning our pressure readings in class and reading our superheat and subcool, my questions is should there be a average pressure each side SHOULD be? Like how do I know if it’s a high pressure, finding the calculated pressure or is there just general knowledge of what the average high / low pressure of a system should be

[@azrealgamer]

I'm new to hvac that's exactly my question I don't understand

[@josephsantos7047]

@@azrealgamer yeah i think there is a ballpark as to what they should be 125-175 low and 325-375 high i think

[@randymoreno9345]

I know this an old question but ill attempt to answer it for anyone reading this in the future. Refrigerant pressure is directly related to temperature. There isn't an average pressure that you're refrigerant should be. Provided that the system is properly charged and no issues exist, your "high" pressure will be affected by your outdoor ambient temperature and you "low" pressure will be affected by you indoor space temperature. All refrigerants run at different pressures, some very similar to others.

[@MrJoeyable]

I would love to learn more. Really interested in getting my hvac license

[@EdenFL97]

Did you start your HVAC school yet?

[@NateDogg_1975]

Working on Thermal king reefer refrigeratation systems..410a...im new to this so this video helped alot. My boss has done it 33yrs working on TK units and Carrier units so wanted to get better knowledge so i canbe better at it like him

[@toolemanful]

i got a guestion can u Discuss recovery levels for residential equipment using R-22 and R 410a. containing less than 7 lbs of refrigerant.

[@benkevinhart366]

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[@rickl6697]

Love your videos. They are so well done and loaded with valuable knowledge. I primarily only do R134a (automotive,) do you have any books or quick reference cards for automotive R134a or R134a in general ? If not is there a video channel or source you would recommend. You've helped me get a better understanding of superheat and subcooling. My 40 ft Rv has a TXV and 36' of hoses from the compressor and condenser to the evaporator. Thanks again.

[@NERez-pr1rg]

Four TINAY!

[@acservicetechchannel]

Yes we are signing a petition for the renaming!

[@ronnienewman7995]

In technical school do we do more hands on? Than individual work?

[@EdenFL97]

I would go to school. I'm currently in my third month and there is a lot of hands on. My course is 10 months, With an extended 8 month program for Associates.

[@semmeh4918]

Can I be able to measure with this tool Testo 405i Outdoor DB Temp and Indoor WB Temp, and what is proper way to do measuring on Mini Slit systems. I really appreciate what you doing regarding education us here on YT-.

[@MrJukeMasterDBD]

Looking forward into learning & being successful in this field if in God will 🙏🏾 any tips?

[@acservicetechchannel]

Just keep your head up, knock on doors until one opens. Pray that you end up in the right company. Some companies like to train and others don't so you just have to assess the situation as time goes on. I will say, once you have the knowledge, tools, and skills, it is a real in-demand career, thanks!

[@KingNidus]

I may be getting an hvac job next month. Im really green basically don’t know anything. Im trying to learn a bit before I get hired. What’s the basics I need to know as a helper/apprentice. Cleaning condensers what else?

[@indredcold3191]

Dang you could call my dog with that whistle in the narration 😂

[@davidmaynard4167]

How would you make sure your low ambiant (A19) thermostat is correctly wired on the outdoor unit of a heat pump? Let's say a York ..

[@ASAPJermz]

Thank you 🙏🏼‼️

[@hectortroche7298]

Hey can I just study the book and take a test online for my HVAC certification? I work in apartment maintenance and I'm already doing HVAC work for the last 2 years

[@evelyn367]

super heat 6- 7 degrees C same a sub cooling but bang on at 6K

[@mannyloera4297]

I’m 41 and I’m starting A/C school on Sunday.. am I too old to learn this trade??

[@acservicetechchannel]

Absolutely not, go for it! I am sure you are bringing other skills to the table as well!

[@EdenFL97]

I started my schooling in February. You got this! I have many older people in my class starting their careers with me (24).

[@davidthomas2585]

Absolutely not my dad did it, and here I am learning it myself. Both of us are technicians in the same company now, taking great strides in it too

[@rcinfla9017]

Many seldom think about the accuracy of their pressure gauges or temperature measurements. Gauges can be bought with specs from +/- 0.1% to over +/- 1% accuracy. Cost of gauges is usually in relation to their accuracy. 1% accuracy is about +/- 3 psia at high side pressures. That translates to about +/- 1 deg F uncertainty in vapor temp. Thermocouples of K type (yellow) have an accuracy of about +/- 4 degs F for typical air conditioner temp ranges. Thermocouples of T type (blue) have an accuracy of about +/- 2 deg F for typical air conditioner temp ranges. If thermocouple meter can change its thermocouple type setting, it is better to use the blue T type thermocouple versus the commonly used yellow K type thermocouples. All this is before user errors induced by reading gauge scale off angle making reading a little high or low from angle between needle pointer and scale, and. not providing a good thermal connection between thermocouple and copper tubing due to dirt and corrosion of tubing. Think about this when unit specs a subcooling range of 8 to 12 degs F and your test equipment cumulative temp/pressure reading accuracy is +/- 5 degs F.

[@rogeriosoares8681]

Good morning I'm from Brazil and i work with air conditioning Where do you work

[@juliantrujillo8560]

He work on the usa

[@thodovlog3284]

Thank you for your video!

[@samhaazratechnicalsupport]

Good vedio sir 🙏😘🇮🇳

[@twitchypoo100]

So how long does it take typically to measure the refrigerant levels from start to finish?

[@donaldsaunders4736]

Thank you sir👍

[@gerrylong902]

I bought quick guide troubleshooting card through Amazon. Under TXV Metering device in cooling mode, go to scenario and go down to Outdoor coil: low airflow or deteriorated, it says high under subcooling, I think that should be low unless I am misunderstanding. Could you please let me know? I appreciate all you do and use your info to assist me and my team. Thank You.

[@The12stonesfan]

Hey Craig! I'm a Senior in HS and i came across a positive video about your HVAC book! So next summer or so i plan to enroll into a HVAC program at a local trade school and i'm wondering if your book gives a person a pretty good overview of the basics and whatnot of HVAC. Cause i don't prefer going into trade school next summer being that guy that knows nothing. I kinda want to at least have a basic grasp of what stuff is/does,etc. Also, about trades school, how would you know if a program is a good or bad one? I know i won't enroll in one until next summer but what are some red flags i should look for when researching the schools or what questions should i ask the trade schools? Thanks!

[@karljg19]

Good point kid. The book is worth every penny. Get the whole package if you can. Book, workbook, and flash cards. Go ahead and get your EPA 608 certification (Universal card) while you're at it. It will give you a lot more than the basics.

[@jamesortolano3983]

Great question. Red flags are everywhere,not possible to know if your going in green. My advice ,like I tell most people who are mechanically inclined. Set your self up with 5 questions you want to know the answers too. Ie:what is air flow,how do we measure it,how does this apply to a/c operation. What is this closed loop system,how can we achieve it,how many items are involved. I had no school ,or internet,but I'm old . The old guy I learned from said this to me , learn the name of all your parts,learn the function they need to do .Ask many questions. When i get a new helper,and he is continuously curious,with question and trying to explain to me how he's thinks it should work. I know he's on the right direction. I'm still learning!! You'll get it!! Don't get distracted by the red flags,as this applys to techs as well. We just call them HACKS. KEEP interest in it ,and you will find the answers! I raised 3 kids ,nd a wife that never had a paying job. I started right where you are now . It's a great ride!! This field needs you !!

[@marioangeloi9433]

How’s it going any updates ?

[@poochbar7421]

Just started doing hvac last week I kinda suck rn

[@sazibulislam6792]

Hi I explore to ur webpage its very organized .. I have questions about Refrigerant weight calculator .. There have written foure query .. 1. Refrigerant type ..I understand 2. Liquid tube of OD size ..mean conderser tube right? 3. Vapore Tube OD size ..means evaporator tube right? 4.feet of line set ....this think I really don't understand ..can u explain what's feet of line set..or what type of value need to put there ? Hope u reply

[@acservicetechchannel]

This calculator is for split systems to determine the additional weight of refrigerant needed within a system. If a unit comes with enough refrigerant for 15' of line set but you used 50 feet then you need to add enough refrigerant for the additional 35 ft of liquid tubing and large vapor tubing to determine the amount of refrigerant weight, thanks!

[@tony1592]

What if wet bulb is 50 f and ambient temp is 80f

[@Zdravko1394]

Greeting. why the data on your instruments does not match the Danffos Refrigerant Slider. Danffos 200 psi / 65.07 F Thanks for ansver. R 410A

[@mrkrause3]

Thanks for the info.....I’m trying to be more knowledgeable about Refridgerant’s and AC operations.

[@Gt92279]

If the refrigerant is contaminated how do you know what gas is in there..

[@eli-s26]

Im 18 and in 2 months I will be starting HVAC with no experience any tips?

[@mikaelmullarkey3931]

What’s a good temperature reader? My multimeter doesn’t read temperature

[@Hvac503]

Fieldpiece foldable digital thermometer

[@brianm6060]

Whats a 4tinay?

[@lorenzocaban8368]

My first day going back to class I'm fifteen and I also no nothing about hvac berry nervous

[@titusjordan5886]

I've been trying to purchase the AC Service tech simulator but can't find it nowhere. anyone has any idea on how to get it

[@eduardotamez5733]

I got the e-book. downloaded to iPhone and got garbage. It just does not work in the iPhone at all. I tried in a Windows computer and I have to install Adobe Digital Editions. I can see it but no way to resize letter, no way to search. That is not what is advertised. No way to get help from a human being either. Any comments?

[@acservicetechchannel]

Just email us at [e-mail] and let us know. Provide your name, email that you made the purchase with, and order number, thanks!

[@harh3101]

One great big THANK YOU

[@acservicetechchannel]

Thanks for listening

[@bullfranthrow]

Dude did you start the video in the middle or is this a continuation of a previous video?

[@acservicetechchannel]

You can check this video out which may help but no that starts out with the standard refrigerant bottle and going over pressures and temps. Here is another- kzbin.info/www/bejne/fHzceKh-gLqBptE

[@dxgraphyvlog8550]

I'm gonna open my workshop so what should I do First thing first? need your review!

[@MichaelLee-tp2fv]

I am trying to learn how to fix my fridge and a/c by myself. These HVAC guys are blood sucking low life leeches. They want $850 to fix a pin hole leak on the copper pipe and recharge the gas when the fridge is $3800 brand new and $500 second hand. Simply cut and weld a new piece of copper pipe which can be done in 2-30mins plus recharge and testing, I am looking at 1.5hrs labour here. Good video thx!

[@aliasskipstevens4246]

As knowledgeable as you are, you are not a good enough teacher yet. You go too fast and you leave out fundamental facts about what you are trying to teach leaving students like myself wondering what you mean. Is the system running or not is one of the one's you leave out quite often for us beginners. That being said...I trust your knowledge which is a huge plus. Slow down and pre-state the conditions we're starting with each time and you'll be the best teacher on KZbin. I should know, I was, before I retired, the best local HS math teacher...and even the best salesperson when I did that. On a different note, I bought at auction a Snap-On R-12 service machine. Did they recover refrigerant in those days? It will apparently vacuum out a system, but it doesn't appear to collect the refrigerant. Can I modify it to do so? Thank you sir.

[@josephtran-day3437]

I just got scammed by this master HVAC and now I am here learning for free and I got my license but dont know how to do jack shit im pissed off lol

[@yayap5631]

Lol. It's all good. I was in the same boat. Just find a good place to mentor you.

[@Sam-dc7qp]

Attention ! ! ! Do you have a video of a furnace with the wiring of blower motor with a 1 wire capacitor coming of the motor

[@EzekielBorbor-p1i]

What is Evaporator