HVAC Apprenticeship Class, Refrigeration Cycle, Superheat, Subcooling, Saturation, Parts, AC & Heat!

In this HVAC Training Video, I am Teaching the Refrigeration Cycle, Subcooling, Superheat, Saturation, and Component Operation, in both Air Conditioning and in Heating Mode, on this Heat Pump. Think About the Refrigeration Cycle as you Measure Pressures and Temps to be able to Troubleshoot Quickly! Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #superheat #subcooling #refrigerationcycle #temperature #troubleshooting #quickly #heatingmode
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[@richardcascio660]

Great video as always. Your book is awesome also. Thanks so much.

[@acservicetechchannel]

Thank you so much Richard!!! Thats very encouraging!

[@danielatu6155]

I use to be a fan, now I'm a whole air conditioner

[@acservicetechchannel]

Ha ha! Thats an original right there!!!

[@DOC10215]

That was AWESOME!!! 👏🏽🙌🏽😅😂🤣

[@yevheniylitynsky4348]

We don't discriminate, we refrigerate.

[@rashadzellner1298]

Cute 😂

[@samyz1660]

I didn't learn in HVAC school a tiny fraction of what I've learned in this channel. All I can say: this is a great great valuable channel to learn, and to become better HVAC Tech. Thx

[@acservicetechchannel]

Thank you so much!!!

[@rmorales4605]

You still need the EPA certification. Without it you may go to jail. Just an advice. Good 👍🏼 luck 👍🏼

[@samyz1660]

@@rmorales4605 I do have my EPA . My comment was about learning from the channel not about the EPA

[@ashleymarie1288]

Strange. I've learned all of this my first semester. I have a really good school though. The video is still helpful as a supplement.

[@PhillyPdot215]

Your future HVAC tech is here for the knowledge thanks man I have less then a month for my EPA…keep sending this hood Energy!!!🎉

[@gstynchula]

So, today I'm 40 years old. I was in car business for 18 years. Come January 3 I'm going to school for HVAC. I'm watching your videos to get a head start. Thank you so much for all you do. Very good information!

[@Sc19869]

Good luck. I’m thinking of doing the same

[@rmorales4605]

So the car business didn't leave you any savings?

[@083rt]

How is it treating you so far?

[@ed3829]

I'm about to turn 40 and looking to get into HVAC as an apprentice. Wife, kids, mortgage, all that, and I'm gonna start at the bottom of this trade because I want to. I'm wondering if you stuck it out and how it's gone for you so far.

[@charlesgallimore6611]

I am very appreciative of your knowledge and the fact that you're willing to share your expertise! I am 73 years old and have worked in the industry when younger! I did not keep up my education. I installed two units in my only to find out I knew nothing about 410a sub cooling. Thank you for being there with your knowledge!!! REGARDS

[@quietgameplays8246]

Is this better than what they teach at school Thanks for explaining 10x better

[@rmorales4605]

You're not wrong. That stupid old instructor I had. He just wanted the money. Didn't teach anything

[@bryanalvarez6161]

I am a 91C in the U.S Army mainly HVAC and military equipment repairer and I like that you do your best to make the video as easy as possible to understand and 🆓 information for people in this Area to learn. Thanks a bunch new subscriber here

[@acservicetechchannel]

Thank you for your service and I really appreciate your comment! That was encouraging to hear!

[@Southwest4Life]

I started doing commercial install in Phoenix az back in early 2000's. I switched over to residential install in 2007. I spent many years installing with knowing just the basics of refrigeration. After watching this video a few times over to digest all the info. I can't believe I've gone this far without knowing all this info. 😮😅

[@abdulrehman..6349]

I have been working as a hvac technician since 2013 on various types of air conditioners . I did not learn ever like this deep explanation. I enjoyed the whole video.

[@acservicetechchannel]

Thanks for sharing

[@rickguelda4743]

Thanks for all you do. Been a tech a few years now and always learning something new. Love watching your videos, very informative and easy to follow. Keep up the good work

[@missrachel2]

literally studying all your videos for my mid term thank u so much I've learned so much from you it's appreciated

[@amonbanda5968]

I never stop learning because of this channel.this knowledge is Worth alot of dollars.I am really grateful for your work.

[@acservicetechchannel]

Thank you for watching and learning from our channel!

[@REFEREEMOUSE]

Love reviewing your videos because I spend a lot of time in commercial and don't do a lot of manual calculations. Even bought the books and slider.

[@SilverBackELTorro]

I wish I had this instructor during my time in college learning refrigeration technology. I bought your Book. ❤ them.

[@SawlRZ]

What a great video! Learned most of the electrical stuff, but the refrigerant portion has been my biggest hurdle. This video seems very promising just by listening to it on my way home from class. Can’t wait to grind and write down all the info I was listening to and using all the visuals to reinforce. Thank you bud! I’ve bought your book too but nothing compares to all these visuals and explanations

[@missrachel2]

my school in Massachusetts recommends this channel btw I hope this channel blows up even bigger

[@domdingle311]

Following you since the beginning of your channel and you keep doing great things for the HVAC community! All information is useful information in our field.

[@pg_usa]

Need to show the log ph diagram and i want to see but he not show...

[@P9rkour90]

@@pg_usa eeeh nobody’s perfect 🤷‍♂️

[@pg_usa]

@@P9rkour90 ok its not a big problem. Please next time. Show a log ph diagram

[@EverythingHVACR]

These videos are great, I send them to our younger guys, and I appreciate what you're doing.

[@acservicetechchannel]

Thank you so much! It means a lot to know that you're sharing them with your team!

[@The70.000]

I found this video very helpful it was perfectly explained. He hit all the points on how the system worked and how each device serves its purpose. Bravo well done soon looking forward to learn more 🤲🏽

[@acservicetechchannel]

Thank you for watching, I'm glad you enjoyed it!

[@Pack044]

Wow impressive video, brought back my high school shop experience back

[@Slickizme]

Great video. I gleaned a lot more in this video than 20 other videos I’ve watched. Thanks.

[@acservicetechchannel]

Thats awesome, thanks!

[@Ificouldpressreplay]

i'm certified epa 608 and this video is much helpful than the school. thank you

[@custer14]

I would’ve learned so much More if I took this guys class instead of your local joes class

[@jimsnodgrass8454]

Craig, I love your videos, and want to study for and get my 606 EPA license soonest. I have orderd your book. guage set and dual temp meter.. but I must ask since I see almost NO mention of it at all...: What about "Packaged Units" where the Outdoor and Indoor unit's functions are both packaged together and installed on the roof of a commercial building?.. There is an Intake duct side thru a large air filter , into the "Outdoor" compartment with the condender, accumulator and reversing valve, and a very large condenser coil assembly and heat exhaust fan, and a separate "Indoor" coil side within the same Heat Pump unit that has a large squirrl cage blower forcing air across the super cold indoor Coil assy equivalent on that side back down into a duct that forces cold air into several office spaces and a half dozen vent grills in rooms in the vicinity below it in that part of the building.. My two questions are .. where do you connect your guage set to monitor the temperatures and pressures in this type of " Packaged" 5 ton Heat Pump system? the HI and LOW sharader valves are only 1/4 tubing T-d off of the main / large tubes I think I should be monitoring.. We're in San Diego and I think all the heating /defrost functions may have been disabled on this unit during or after installation. it's 8 years old and I see three White wires are disconnected and a couple other deviations from the schematic. . the low pressure tube coming back into the condensor side is so cold its completely iced over on that 4 foot? large line entering the Reversing Valve, and I'd need to chip that ice off to connect a thermal probe there.. is that normal that this suction/ low side line comiing into the Condensor compartment should run so cold on hot days, and have constant Ice covering it? two days ago I got it running and slowly added 410A to the LOW side Shrader valve gradually from a near zero PSI point up to nearly 30 degrees as read on the 410A scale on the guage and the HI Side shrader valve also started at near zero PSI and came up to no higher than 130psi in the 40 minutes I took to partially fill it with about 7 of the 10.6 gals of 410A this system will take .. I made sure to purgs any Air drom the lines before starting to fill the LOW side slowly.. It Iced over during teh process, could this be normal for this type of system? Down below in the offices at the vent grills the temp has cooled from over 75+ to to 63.5 on day one but is now at 66 deg F on day two. I had to disconnect the NEST Rev 3 completely and jumper R-G-Y-O in a wingnut at the input to the unit and had to force the CONTACTOR ON because what was happening is the R voltage was only 4 to 5 vac .. and the NEST would constantly complain about the R lead bieng disconnected yet the wiring itself is OK.. anyway I have a new defrost control board on order since some restors are burnt on it, and I believe it is what is causing the R winding vac to drop. After a 5 minute run interval with Contactor manually depressed that same R winding vltg, the Contactor Coil voltage and the voltage at the Wingnut RGOY jumper all pop up to where they should be at 26.7 vac and it continues to run fine .. But I have no thermostatic control..and if I kill the main 240 breaker it wont start up without manually depressing the contactor for 5 minutes again.. Totally UNSAT .. Anyway I hope you can reply to my questions above. I will be shutting it all down again and checking all the limit switches for continuity thru them before replacing the defrost board when it does arrive in a week or so..

[@kevinslattery4818]

Great video love your books

[@daneyand]

Craig, you are amazing! Keep up the good work.

[@neilafram7886]

Hi Great as usual and thank you. I have noticed you referred to different types of refrigerants R410A (most common) R22 and HCFC (will be replaced due to Ozon depletion potential (WHEN LEAKED) both R410A and R22 are A1 class non-flammable refrigerants, while you mentioned R454B which is an A2L class flammable which will require extra safety measures to protect the installer and of course the user. These classifications are as per ASHRAE34 & ISO817. It is important to mention the classification as 99% of AC refrigeration engineers are not aware of flammable which was recently introduced while A1 class non-flammable has been around since 1928. Thank you and keep up the good work.

[@actech3572]

Great explanation....very helpful to new a/c technician..👌👏

[@guyzo540]

when i was learning how to do engines there was a game that taught how to do it. would be cool if there was one on this also.

[@robertl.7657]

Best video out there ,on the refrigerant cycle as well on other things 👏, keep the details!!!its the difference 👍

[@jaykesapalaran5434]

GOOD teaching very informative and easy to understand.❤️

[@rickeyortutay6697]

Minor Adjustment:@ 7:21-8:03 I love the videos just want to state that but you mentioned something about The refrigerant subcooling being 16degrees subcooled measured, and your data tag indicated txv subcooling needs to be 12, You mentioed to correct this charge is by adding refrigerant to achieve the 12 degree subcool mark, Which is not correct. you would recover the refrigerant because you're over your mark, High Subcool you need to recover and low subcool you need to charge the unit to match the marking stated on the data tag. Love the videos though very informative.

[@tsegaygirmay7533]

Great video

[@renteria4540]

For me you the Best to explain. You're my master

[@9ohfiver]

Definitely going to be sharing this video to my friends. Thank you for this well done 🙌

[@rmorales4605]

You're not. You want to learn. But you don't want anyone else to learn.

[@grahamblack4]

Thank you for the great information

[@HVACR-Airman]

Hey Craig my school has all your posters in the classroom ,SMART LOCAL 66 of Seattle and western Washington !

[@acservicetechchannel]

Thats awesome!!! Thanks for letting me know!

[@brianmcdermott1718]

A great combo. of anamation and info. Thanks Craig.

[@MagicPieYum]

id love a video about Condenser Fan Cycling Controls, i ran into one on the field and I've never seen one before

[@boianpeev1820]

Great lesson video guys keep it up

[@حسين-ج9ط7ي]

Great job, thank you brother. You are so talented

[@Jodyjo99]

Where you from?

[@spartan5106]

great content as always! :)

[@jessienascar8778]

You did great

[@michaelhampsas3368]

great video

[@ejohnfall]

Good information ❤

[@acservicetechchannel]

Thanks a lot and I always appreciate your comments!!!

[@charlesdlamini8126]

Thanks once again excellent explanation 👍

[@shansundar2638]

Thank you very much, Craig. You stated that when the outside temperature goes below 32 more liquid comes in to accumulate tank then HOW does the liquid change to a vapor state before going to the compressor ?? Thank you again

[@MrDameech]

At 8:38 you mentioned that “…the vapor line will be higher in temperature than the liquid line” But your diagram suggest that the blue vapor line is “Low pressure low temperature vapor” while the red liquid line is “high pressure high temperature”. Did you make a mistake or am I just confused.

[@guts1005]

When you dont need to spend thousands on school anymore because youtube got us covered.

[@ashleymarie1288]

Makes more sense for the dark red to be liquid and the light red to be vapor.

[@possession3929]

I'm confused at 31:07, how is the low temperature low pressure liquid turning into a vapor as it travels up the coils into the reversing valve? If it's cool outside and heat transfer flows from high to low, I get the coils will be cool but what causes the phase change to occur?

[@ansarahmed1021]

very good

[@TheMr.R]

Thank you sir

[@pabloantonio9507]

Thank you much

[@JoseCisneros-c5e]

Thank you, Craig. Quick question. SH and SC are always in the same level?

[@Albos11]

If a new ac unit has a factory filter drier do you need to still instill one one the line set!

[@furysactorslounge3956]

How do I set the temperature differential on an older model? Simple Comfort 2000

[@LaurenceOgundare]

Is there any on line certificate for all this training

[@baskorobas7550]

Saya suka..........ini yg aku cari

[@FranciscoGomez-ct7tz]

Come on man you’re going so fast😂😂😂

[@salvadoralvarez3187]

Good info gracias

[@shafiqulalam8118]

Condenser of chiller has water in it, what kind of chemical can I clean it with?

[@codykruies3414]

We are the future!

[@renedurant6798]

Could you please do a video on sub cooling for an ice machine model ice0806fw6 or similar. Thanks

[@MilleneLartey]

It looks like I have to stop my profession and follow you please without money how can i become like you.

[@danielsampson4932]

I will like to have your books. Please, how will I be able to get them. I from Uyo, Akwa Ibom State in Nigeria.

[@acservicetechchannel]

You can purchase our book on Amazon here! amzn.to/3ytHJSs or on our website here! www.acservicetech.com/store

[@crown139]

Hallo sir Thanks for you [ IN Hibited by External source Waiting for bas communications ] The is problem in chiller trane What is the probability of this problem???? Tat means it Waiting for signal for you BAS "building Automation system " that's what tells it to run or you can run it off local that will run off temperature not on off signal for BAS system What about the solutions

[@vickyelectronics8909]

Helo sir R454b refrigerant standing & suction pressure?

[@mamba110]

Anyone here who is planning to become aircon technician

[@David.Anderson]

Friday night 12:57 am

[@kashifiqbal1038]

❤

[@amealnet2495]

I need a shortcut to total hvac knowledge.

[@SalahDambo-gb6cs]

👍

[@kennedy67951]

Master, 'why isn't the High Side or High Temp Side used to Heat Water as Pre-Heating for Home Hot Water System? Also, why isn't Thermal Electric - Tec's Used to generate Electric Power to off set Power use and to generate Power for LED Lighting for Home and Office use? Just asking. These Unit's Waste enough Energy that if someone had a mind too, could use that Waste to Power a lot of things in the Home. This would help cut Energy Cost in the Home.

[@bryanmagdalensky5715]

They do, check out heater recovery water heater, most new grocery stores use the heat from the coolers(think produce and meat freezers) to preheat the domestic hot water

[@jereRam12345]

Question??? Why by adding refrigerant we raise the subcooling so the line temp stays the same but the gauge temperature rises right….but sometime they both rise at the same time what is happening in that situation?????

[@jereRam12345]

In other words is hard to get the require subcooling if they both temperatures rises at the same time

[@acservicetechchannel]

So they will both rise in temperature when you have a very low subcooling, then when you get closer to an accurate charge, the subcooling will increase with the line temp lowering. I understand what you are saying completely. You just need to continue to add refrigerant until you notice a higher spread between the line temp and the sat temp, thanks!

[@jereRam12345]

@@acservicetechchannel thank you just I get scare when I see the saturation temperature over 110 or much higher like 120

[@matthewsmith1994]

How is this free? I feel like I'm stealing something.

[@acservicetechchannel]

Matthew, we certainly put a lot of time into each training! We have our book, workbook, quick cards, Powerpoints, and posters at www.acservicetech.com thanks!

[@frankieg40]

What causes a heat pump to run on heat mode when thermostat is turned to the off position? Works ok when turned to cooling.

[@goobermcgoobs7589]

Gotta check with a meter bro and figure out where the voltages are coming from

[@REFEREEMOUSE]

Get the schematic, something is energized that shouldn’t be…or welded contacts

[@josearcila664]

Como.lo.escucho.en.español..

[@quietgameplays8246]

No se puede🥹

[@goobermcgoobs7589]

Please stop teaching people this stuff so my hourly rate keeps climbing until I make more than a doctor because nobody wants to do this hard work! Lol

[@Jodyjo99]

LMFAOOO

[@NikoBellaKhouf2]

You're wrong. Plenty went through school and were willing to do the work... Until we found out how low wages had dipped. Nobody wants to do HVAC/R for $9 per hour. Yes, that's how much they were paying us about ten years ago. Back then, there were too many workers and not enough work.

[@Novusilluminatus]

@@NikoBellaKhouf2 i used to get 8.50 an hour back in 04 🤣

[@NikoBellaKhouf2]

@@Novusilluminatus 😳 damn I didn't realize it was bad even then. Which area of the country?

[@Novusilluminatus]

@@NikoBellaKhouf2 florida

[@محمدنعمان-ر6م]

Picture not clear

[@Amazingyoutubechannnel]

17:10

[@rmorales4605]

Question! What are the most common problems with R410a units. Not heat pump. I'm beginning to install R410as this year. ?

[@0k123Go]

[@lancec.bunton5629]

you speak too fast😮

[@manojk.s1740]

I joined get ur mail id