My Paperback, E-Book, Workbook, Quick Reference Cards: www.acservicetech.com/store E-Book: play.google.com/store and search "AC Service Tech" My Paperback and Quick Cards: www.amazon.com/shop/acservicetech Tool List: www.amazon.com/shop/acservicetech Support the Channel: www.patreon.com/acservicetech Related Videos: The Refrigeration Cycle Explained Step By Step! kzitem.info/news/bejne/2qCj2Hd7emOrfHY Why Measure Both Superheat and Subcooling? kzitem.info/news/bejne/onqMs4x3h5qgrWk Total Superheat Method! kzitem.info/news/bejne/1G9_l5WMrpmVno4 Superheat Charging Chart- How to Find Target Superheat! kzitem.info/news/bejne/w3-Cn3aohHWmnZg Connect, Measure, Disconnect Procedure! kzitem.info/news/bejne/laV7maShoXyqoYY Checking the Charge Tools: Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq Refrigerant hoses with valves amzn.to/2aBumVI Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9 Yellow Jacket 4 Port Manifold w Hoses amzn.to/2BkuGIq Digital Refrigerant Scale amzn.to/2b9oXYl Ratcheting Service Wrench amzn.to/2dGV4Nh FieldpieceSMAN360 Digital Manifold Set amzn.to/2BdoaD4 FieldpieceSMAN460 Digital Manifold Set amzn.to/2nB4Fe6 Compact Ball Valve for Refrigerant Hose amzn.to/2KUisW8 QuickDisconnect 90 for refrigerant hose amzn.to/2MMtVcg RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn Fieldpiece ST4 Dual Temp Meter amzn.to/2wc1ME3 Fieldpiece Bead K Type Temp Sensor amzn.to/2DBwKfs Fieldpiece Wet Bulb Temp Sensor amzn.to/2RRI7Tw Fieldpiece TC24 Temp Clamp amzn.to/2qHLyjZ Electrical Diagnosis Tools: UEI DL389 Multimeter amzn.to/2xAdaJf UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ Magnet Jumpers- amzn.to/2PyKPQZ Alligator Jumpers- amzn.to/2PxqJXn Irwin Wire Stripper/Cutter/Crimper amzn.to/2dGTj2V Vacuum Tools: JB 6 CFM Vacuum Pump - amzn.to/2nqbvo8 CPS 4 CFM Vacuum Pump - amzn.to/2DxgPwY Appion Valve Core Removal Tool - amzn.to/2uYr8WL Appion Blue 3/8" to 1/4" Vacuum Hose - amzn.to/2uYlVyc Appion Red 3/8" to 1/4" Vacuum Hose - amzn.to/2uYg6Ro Yellow Jacket 1/4" by 1/4" 3’ hose - amzn.to/2umtcod Appion 1/4" by 1/4" and 3/8” hose - amzn.to/2Zyxzx9 Uniweld 1/4" by 1/4" 2’ hose - amzn.to/2GFov1Y CPS Vacuum Micron Gauge - amzn.to/2v1nM3O JB Vacuum Pump Oil - amzn.to/2mGrlXy Flaring Tools: Yellow Jacket Flaring Tool - amzn.to/2OBxGlM Spin Flaring Bits 1/4", 3/8", 1/2", 5/8", 3/4"- amzn.to/31BCs8Z Yellow Jacket Flaring Tool with Set Depth - amzn.to/2QIKsQH Yellow Jacket Torque Wrench - amzn.to/2NRR68Q Uniweld Swage and Flare Kit- amzn.to/2T55jyn Nylog - amzn.to/2MLJcch Ridgid Tubing Cutter - amzn.to/2DnjjR1 Wolverine Tube Reamer - amzn.to/2QGLyMV Swaging Tools: Manual Copper Tube Swage/Expander- amzn.to/2WRPa1M Spin Swaging Bits 1/4" to 7/8" for the Drill- amzn.to/2YQwwqS Uniweld Hydraulic Swaging Tool- amzn.to/2MlrI8m Uniweld Swage and Flare Kit- amzn.to/2T55jyn Uniweld Hammer Swage kit- amzn.to/2CzWMMU Uniweld 3/4" Hammer Swage- amzn.to/2CzXsSs Uniweld 7/8" Hammer Swage- amzn.to/2Mja5WE Uniweld Multi-Size Hammer Swage- amzn.to/2T3Cx1b Brazing Tools: Air Acetylene Torch setup - amzn.to/2aQalsb 15% Silver Brazing Rods - amzn.to/2gVLyLc Ameriflame Oxy Acetylene Torch Setup #1  Tip - amzn.to/2SRm3JF 40cu B Tank to 10cu MC Tank Acetylene Tank Fitting - amzn.to/2GxZZPi Nitrogen Regulator - amzn.to/2bXdR5f Uniweld NitroVue Flow Regulator - amzn.to/2GnsaAo Uniweld Nitrogen Flow Meter - amzn.to/2brvoBg Stay Brite #8 Silver Bearing Solder and Flux - amzn.to/2XIDJsY Aluminum Braze Rods - amzn.to/2IGNMu Refrigerant Leak Detection Tool: Accutrak VPE Ultrasonic Leak Detector amzn.to/2nFYKVe Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.
@selvarajanv.achary7628
4 жыл бұрын
Very good and useful.
@MichaelMantion
3 жыл бұрын
Desperately need an answer. I am going crazy. ASSUMING a system is working properly can you determine the correct charge level with the sub cooling? In other words if you know the temp of the high line and the pressure of the high line can you determine if a system is properly charged assuming the outside temperature is reasonable. I know most systems only post the average temp. but.
@gustavokeegan961
3 жыл бұрын
i know Im asking the wrong place but does any of you know a way to get back into an Instagram account? I somehow lost the password. I appreciate any help you can give me!
@forestismael3863
3 жыл бұрын
@Gustavo Keegan Instablaster :)
@gustavokeegan961
3 жыл бұрын
@Forest Ismael thanks so much for your reply. I found the site thru google and I'm waiting for the hacking stuff atm. I see it takes a while so I will reply here later when my account password hopefully is recovered.
@globalgorilla3134
3 ай бұрын
These guys aren't lying. Spent 2 yrs of night classes and didn't learn this. You were born to teach and share/pass on knowledge to others. Thank you for taking the time to do it.
@tateskinner4695
11 ай бұрын
I went to trade school, and have been in the field for six months, but I never fully understood Superheat or Subcooling. This video finally explained it in a way I understand. Thank you for making it.
@dgapp76
4 жыл бұрын
Went in for an interview for a tech position years ago and the guy walked in and said "I just have one question: What method do you charge a unit?" I said, depends on your metering device, subcooling or superheat. He said, you're hired. Then he walked out of the room.
@johnmattern6068
3 жыл бұрын
Was it for an apprentice job? I have an interview for a union for a 1st year apprentice and I’m watching this video I don’t know if they will ask me stuff like that but your comment makes me feel like it’s a good thing I am.
@dgapp76
3 жыл бұрын
@@johnmattern6068 no I had already been a service tech for a few years so I knew just enough to be dangerous haha. They may ask you a question like that as well as other questions. If you don't know the answer, just say so. If you talk the talk, they will find out pretty quick if you can actually walk the walk. Good luck!
@daveyt4802
3 жыл бұрын
I lost a job not knowing this 25 years ago. I turned out alright though. Heh.
@bobbyanderson2168
3 жыл бұрын
@@dgapp76 well said sir, to @John Mattern, remember this, you’re going in for an apprentice job. Trust me, they don’t expect you to know a whole lot. What you want to do is just like this dude said, be honest. I can tell you from experience, a good work ethic is worth TEN TIMESall the knowledge in the world. If you have a good work ethic, I can teach you anything you want to know about this industry. But without a good work ethic, and all the knowledge in the world, you’re just a lazy bum, nothing more. Good luck to ya buddy, I’m sure you’ll do well… or should I say, I’m sure you did well. One thing I LOVE about these unions, they’re not satisfied with making you a limited journeyman. When they get done with you, you’ll be a master of this trade. Congratulations, make the most of it…
@Eric-ot6sn
2 жыл бұрын
Just takes a little bit just to be dangerous.
@abrahammanyang5313
Ай бұрын
I have searched for this kind of video for the past eight months, but finally, I found it. Thank you for your effort.
@user-pp7vv5eh3n
6 ай бұрын
This video is 14 mins long but I took 2 hours to finish it. Not ashamed to say that I’m taking it in word for word. You’re a good man thank you for the video.
@acservicetechchannel
6 ай бұрын
Wow, you really want to learn and thats great!!!
@Alienspecies635
Ай бұрын
Yeah it can definitely get confusing it took me a couple years to figure out what it was and to actually have it stick in my brain 😂
@914nino
15 күн бұрын
I came across your channel 7 days ago im 21 years old wanted to get into the hvac field I’m going to start classes soon but I also watch your videos they super understanding of how u lay your teaching format word by word step by step I definitely will be ordering the book need to soak up as much advice and knowledge possible
@acservicetechchannel
15 күн бұрын
That is so cool and encouraging to hear, thanks!!
@blinkersgaming
4 жыл бұрын
Out of all the channels/videos on KZitem regarding HVAC walkthroughs, yours is by FAR the absolute best. I really appreciate what you're doing here with this channel and am happy to see there's ads. Thank you for the amazing content and wisdom.
@acservicetechchannel
4 жыл бұрын
Wow, thanks!
@millenialmemoirs
Жыл бұрын
This video alone is enough to convince me to spend $68 on the book. Well done.
@acservicetechchannel
Жыл бұрын
Thats so encouraging, thanks!!!
@millenialmemoirs
Жыл бұрын
@@acservicetechchannel just put my order in on Amazon and binge watching your content in preparation for starting a new HVAC job this month. Thank you!
@Rangobine
4 ай бұрын
how’s that going im studying right now my grandfather and dad, both Do air-conditioning down here in Sarasota Florida. One of my grandfathers clients is stephen king out on bird key
@millenialmemoirs
4 ай бұрын
@@Rangobine I learned this book inside and out as fast as I could. I also learned his mini split book, manual D, and a bunch of others. Working as a selling technician for one of the top companies in my city making about $9-$10k a month.
@Jeff_Seely
2 жыл бұрын
I have scoured all of KZitem just to find out what you demonstrated here. Most educational videos assume that you know what saturation and subcooling and superheating are and go at a quite fast pace from one topic to another. If I buy anything, it's going to be from you. Thank you for taking the time and not assuming that people know things that they don't. Great work here!
@acservicetechchannel
2 жыл бұрын
Jeff that's so encouraging thanks!
@nickledimez4012
4 жыл бұрын
This is a confidence builder. Listen apprentice don’t rely on your journeymen to teach you this. Ive purchased the book, it is awesome plus watched his videos. The best teacher Period. Thank you for posting.
@acservicetechchannel
4 жыл бұрын
Thank you very much Nickle& Dimez!
@_WalkingThunder
Жыл бұрын
This was, by far, the least convoluted explanation I've gotten on this subject. I can finally understand the concept after way too long overthinking it and getting nowhere when someone else tries to explain it. Thanks a ton! I came here hoping for a little clarification and found a whole new way of thinking about it. The simple, yet in depth explanation was perfect!
@kevinpulver4027
2 жыл бұрын
Wow Craig that's the best definition of "saturated" that I've ever heard! Previous explanations just explanations just told me it was a mixture of liquid and vapor. You clarified that at this point it is not changing temperature. but only changing phase. For 12 years since Tech school I have understood super heat and subcooling but "saturated" has been sort of vague. Thanks again for the excellent videos and I highly recommend your book and cards to anyone reading this!
@melaniecotterell8263
Жыл бұрын
thermodynamics requires a good explanation unless you are a genius. I was supposedly an A-student, but I still really didn't understand it well enough to remember it for very long.
@EarlHayward
Жыл бұрын
As an engineer, but former tech, I enjoy watching such videos (usually the result of researching test equipment though). Overall, good explanation, just might have started with definitions of terms first (but that is just more preference in presentation). As mentioned in the video, or to make it more clear… The temperature of the refrigerant decreases during the desuperheating and sub-cooling processes, but remains constant during the condensing process itself (gas to liquid, or as in the video the “saturated section”). The energy rejected from the refrigerant heats the secondary medium (copper or aluminum), whose temperature thus increases. However, The refrigerant pressure changes little from desuperheating to subcooling (think compressor to service valve). In a similar way to evaporation, the only pressure difference between the entrance and the exit of the heat exchanger is just the pressure drop (the equation is: pressure equals temperature times volume - which explains why your car tire pressure only changes with heat, but is the same wether mounted or not). Also, because the flow velocity in a condenser decreases, the induced pressure drop is much lower than in an evaporator. In other words, the pressure is rather stable throughout the high-side and low-side environment (between condenser and the expansion valve / orifice and vise versa). Another key thing to remember, is that phase change is what takes the most energy (yet pressure is still rather constant). Thus, most heat is transferred during the condensing process (that process which is after desuperheating but before subcooling). Another mental tool I use to think of saturation is relating it to the opposite as in precipitation of say minerals from water; boiling water causes dissolved solids to precipitate (due to temperature change).
@argenismoreno7253
3 жыл бұрын
The best video to understand SH and SC
@AnthonyCazares-k4v
5 ай бұрын
At minute 8:49 you mentioned if our target superheat was 9 degrees and super heat we got was 13 degrees, we are undercharged. Wanted clarification if that was a mistake. Since before that, you mentioned if our target was 13 and we got 17 then we would be overcharged. I appreciate this great video and your time.
@AnthonyCazares-k4v
5 ай бұрын
Please disregard.
@acservicetechchannel
5 ай бұрын
No problem, yeah they are reverse, high superheat= low charge, high subcooling overcharged, thanks!
@bjnopoli
4 жыл бұрын
My entire first year class in 14 minutes. Your awesome.
@acservicetechchannel
4 жыл бұрын
That is awesome! Thank you for your support!!
@nnjvhvhhgc5213
3 жыл бұрын
lol
@adamedwards2435
3 жыл бұрын
Did you at least get to hookup the gauges?
@WTF_BBQ
Жыл бұрын
Wait...... It takes a year to learn this in school ??
@jonathanangeles9683
2 ай бұрын
@@WTF_BBQ4 years if I remember correctly
@robertstober1625
4 жыл бұрын
I love this explanation I’m a contractor and I will use a similar way of explaining it to my trainees
@eliaswakim3631
3 жыл бұрын
this is the best way of explaining the meaning of the Subcooling and superheat ,thank you !
@acservicetechchannel
3 жыл бұрын
Glad you liked it!
@chrischavez5944
4 жыл бұрын
Craig you are the best hvac guy on you tube I’ve been following you for a couple years now I learned so much from your videos
@acservicetechchannel
4 жыл бұрын
Wow, thanks!
@dyltr0
2 жыл бұрын
exactly the explanation i needed. An explanation looking at a diagram just doesn't click. Having the gauges and condenser there and instructing how it would be done in the field is much better.
@beau-beauthecharlieboy8098
3 жыл бұрын
Incredible speech! Short easy words to understand. Coherence in thinking and so easy to follow your mind and highly comprehensive comprehend!!! Thank you very much.
@acservicetechchannel
3 жыл бұрын
So great to hear that you valued the video, thanks! Make sure to read some of the articles on superheat and subcooling on our website at www.acservicetech.com thanks!
@dustinphromphanh3698
4 жыл бұрын
Future service technician in the making here. Thanks for the invite to like your page on Facebook. I find your videos useful and have learned from this video. I'm very much blessed and appreciate this video 🙏🏼
@acservicetechchannel
4 жыл бұрын
That's awesome to hear Dustin!
@doorguru168888
4 жыл бұрын
Thanks for the very detailed explanation. It made Superheat and Subcooling very clear to me after watching a couple of times.
@acservicetechchannel
4 жыл бұрын
Awesome to hear and check out our full length articles on superheat, subcooling, and delta t at our website at www.acservicetech.com thanks!
@napoguevara6450
4 жыл бұрын
you are excellent at teaching learning more with you than in school I thank you a lot I have learned a lot with you
@acservicetechchannel
3 жыл бұрын
Glad to hear that!
@juanlara5773
4 жыл бұрын
Lot of info and well explained. Thanks for sharing valuable information.
@acservicetechchannel
4 жыл бұрын
Thanks a lot Juan!
@ricklannis6244
3 жыл бұрын
You explained that flawlessly, well done!!
@acservicetechchannel
3 жыл бұрын
Thank you!
@jaymesrod4209
2 жыл бұрын
Your videos are very thorough and simple to understand. 👍
@livingyourbestlife711
4 жыл бұрын
excellent explanation, Craig. You are an asset to our profession! thanks for sharing!
@acservicetechchannel
4 жыл бұрын
I appreciate that! Thank you for your support!
@heavyequipmentiv
2 жыл бұрын
I am impressed with your teaching abilities. Great job.
@Caymen43
2 жыл бұрын
Cant recommend this book enough. So simple to read and understand. Im not a tech so I dont service hvac systems enough to have this material become second nature. I read it last year, but forgot some stuff by this year. I decided to read the book again (something I would normally never do), and found it just as enjoyable as the first time i read it.
@AngelTorres-tk2nw
4 жыл бұрын
The best example of Cooling.
@acservicetechchannel
4 жыл бұрын
Thanks a lot Angel!
@bigbite9804
3 жыл бұрын
Knowledge you gain more when you share your knowledge to everyone.thank you for sharing this wonderful knowledge to us..it's very useful for being a hvac technicians. ..
@acservicetechchannel
3 жыл бұрын
Awesome, thanks big bite!
@bigbite9804
3 жыл бұрын
Your welcome sir.
@phadracypres
3 жыл бұрын
Thanks for putting the procedure in a nutshell!!!
@hoddy2001
3 жыл бұрын
great explanation of a common but relatively complicated topic. i bought the book
@acservicetechchannel
3 жыл бұрын
Glad it was helpful!
@TeflonnDonn
2 жыл бұрын
Can’t wait to finally start in this field
@melvincandido7936
4 жыл бұрын
this video helped me a lot to understand the superheat and subcooling, well explain
@acservicetechchannel
4 жыл бұрын
Glad to hear it!
@DG_Fabrication
4 жыл бұрын
Best video on KZitem explaining this thanks
@acservicetechchannel
4 жыл бұрын
Glad it was helpful!
@hvacdoc3165
4 жыл бұрын
I played this video for both of our apprentices today, great explanation thanks for posting the video!
@acservicetechchannel
4 жыл бұрын
That's awesome, thanks HVAC Doc!
@scottwhittier5861
3 жыл бұрын
Great work! Very informative and easy to understand!
@acservicetechchannel
3 жыл бұрын
Glad it was helpful!
@ddee2501
Жыл бұрын
Best description yet !
@gregscheyd4131
2 жыл бұрын
I know I am getting way , way off BASE here .... except you guys are my favorite HVAC SITE . AM I TO UNDERSTAND THAT IN A SYSTEM THAT IS NOT RUNNING , THE HIGH AND LOW PRESSURES EQUALIZE .... and I am referring to AUTOMOTIVE !!!! NO CRANK , NO START 2005 HONDA CRV I would like to part out ..... THE AC IS KILLER COLD , WHEN RUNNING !!!!!!!
@argenismoreno8838
4 жыл бұрын
This is Great, thanks a lot from Venezuela. 🇻🇪👏👏👏👏👏
@acservicetechchannel
4 жыл бұрын
Thank you very much Argenis!
@Conk102
Жыл бұрын
Thank you for these video's and guides. You have been a blessing!! Thank you!!!
@niteshadow1
4 жыл бұрын
I've always thought, little red riding hood for the liquid line and big blue for the suction line. I've taught others that years ago and they tell me they use that all the time when explaining to others.
@kurisu9103
5 ай бұрын
thank you for sharing your knowledge with us on every video for free. 👍
@hakandikmen6193
4 жыл бұрын
Perfect Excellent Very Very informative video 👏👏👏👍👍👍
@acservicetechchannel
4 жыл бұрын
Thank you for watching!!
@altlat
2 жыл бұрын
I thought this was a great explanation of how to check the subcooled and superheated temperatures and explaining the process of both coils, compressor and expansion device. I did have one comment about what the saturated state means. A saturated liquid has a quality of 0% and a saturated vapor has a quality of 100% and the liquid-vapor state is everything in between. This is when the phase change is occurring and temperature is held constant.
@coreykempt1189
4 жыл бұрын
This is so mind blowing and great video!!!
@acservicetechchannel
4 жыл бұрын
I am really glad you appreciated the video! That kind of info was what I tried to put into the book, the procedures and the why and why not, step by step instructions. Thanks for your note!
@tonyslice7279
2 жыл бұрын
Good Job Bro, very proud of you and how you explained everything
@KontraktWolf
2 ай бұрын
Very informative, thanks a lot 😎
@mikewilley5678
3 жыл бұрын
Excellent Description .. thanks
@acservicetechchannel
3 жыл бұрын
You are most welcome
@Sam-dc7qp
4 жыл бұрын
Hey do you ever plan on doing a book on electrical wiring and troubleshooting or is that already in the book now and your videos are the best learning a lot thanks
@acservicetechchannel
4 жыл бұрын
The refrigerant charging book includes everything to prepare a system for refrigerant, refrigerant charging, troubleshooting while measuring the charge and airflow. The full outline is available at www.acservicetech.com/ac-book and I would like to get an electrical book together. It all takes a lot more time than anyone would ever think to make sure you get it done right. Thanks for letting me know what you would like to see!
@jenbuckway5570
2 жыл бұрын
Very understandable and concise. Thanks
@jacobalbright3715
4 жыл бұрын
I love these vids..great explanations, no fluff. Keep it up!
@acservicetechchannel
3 жыл бұрын
Much appreciated!
@cd-stephen
4 жыл бұрын
as a total noob - this explains it very well - thank you
@joelblauvelt5062
3 жыл бұрын
Excellent Explanation! Thank you...
@acservicetechchannel
3 жыл бұрын
Glad it was helpful!
@joelblauvelt5062
3 жыл бұрын
@@acservicetechchannel May I simply suggest that you specify system "Running/Not Running" during these processes.... Thanks!
@gbassaykanu6319
2 жыл бұрын
sir, good morning thanks you for your good work
@dlodaservicetech
7 ай бұрын
Super understandable video i appreciate this
@jacklabloom635
4 жыл бұрын
Thank you explaining this.
@acservicetechchannel
4 жыл бұрын
Glad it was helpful!
@caballogrande9921
2 жыл бұрын
A lot of those carrier units if that tag on the condenser is still good it will tell you your subcooling temperature
@jacklowe3788
4 жыл бұрын
Man I wish I had those books & a clear explaining teacher such as yourself 30yrs ago when I was getting into the trade - Lot of my old school techs teachers that I use to work w/ taught I'm gonna call "Wing it tips" Some get in & out get money fast- I remember one supervisor I had said you can't charge them (customer) enough -Needless to say I knew that wasn't right-hand Been out trade for about 15yrs. Got into farming but 60yr I think I'll order your books & give it another go w/ some proper training- Appreciate all the Good Info. Thanks for the Video, Jack
@jimbola77
4 жыл бұрын
thanks, partner for sharing! love all your videos! top-notch!!!!.
@acservicetechchannel
4 жыл бұрын
Thanks a lot Jimbola77!!!
@josechirinos1861
3 жыл бұрын
It is very important to know how to properly charge a system, set up proper air flow, that way the people who are paying your bills get what they paid for I personally feel good knowing I did everything right and I know that unit is going to work efficiently. Thanks for the video it’s very educational.
@danielshaw4847
Жыл бұрын
Great explanation
@arashautomationlab9088
4 ай бұрын
First I need to learn the names of the parts, Thank you!
@Roto_Dan
Ай бұрын
I passed my E.P.A super proud , Now how do I go about getting a job in Hvac I haven't been hands on ? Any help would be gladly appreciated thanks ,And thanks for the great videos!
@charlesdlamini8126
4 жыл бұрын
Good morning thank you well explained
@acservicetechchannel
4 жыл бұрын
So nice of you
@najeebalyafai348
4 жыл бұрын
Never have I heard such a clear understanding of superheat and subcooling I definitely would of purchased the book had I entered the air conditioning trade, but I have chosen to be in commercial rack systems
@jastinsmith7285
Жыл бұрын
This is Gold!!
@Swenser
3 жыл бұрын
That's a lot of information. Useful practical. After seeing your theory video and now with this practical my life is complete. Q. Why do pump down videos show things going smoothly when I'd expect the compressor to stop working because closing the liquid line valve would make pressure sensor valve trigger or the vacuum created would trigger a too low pressure sensor cutting of compressor. Or do most have to bypass these sensors.
@acservicetechchannel
3 жыл бұрын
The low pressure sensor would be jumped out beforehand and on smaller systems there is no oil sensor. It is hard on the compressor though if there is no receiver, thanks!
@oithachiei01
3 жыл бұрын
Thank you so clear
@acservicetechchannel
3 жыл бұрын
Glad it was helpful!
@jesuschavero7307
4 жыл бұрын
Great videos man I really enjoy all this information ....👍👍👍👍😀😀
@acservicetechchannel
4 жыл бұрын
Thanks a lot Jesus!
@prettycoolac9435
4 жыл бұрын
Great video! Thanks for the knowledge!
@acservicetechchannel
4 жыл бұрын
Glad to help!
@rc5869
2 жыл бұрын
Great instruction thank you. I love your manual by the way.
@Ojeramup12
2 ай бұрын
I have to ask. If a tech comes over and sets the gauges on a 'good, functioning ' A/C unit, what should the blue and red gauges read?
@luke9129
4 жыл бұрын
Great video!!! Keep them coming, top notch!!!
@acservicetechchannel
4 жыл бұрын
Thanks a lot Luke! Will do!
@Dr-YouTube
4 жыл бұрын
Nice explanation of what superheat and subcooling are and how they're calculated, only thing you missed is explaining why they are important.
@acservicetechchannel
4 жыл бұрын
Thanks for the info!
@keithturner4939
3 жыл бұрын
I get this ... but I have 32 years of Xp... I can imagine a young lad trying to get his head round this ... this is a beautiful trade we know 😏 good Vid, you tried to make it simple 👍
@cooldude2245
2 жыл бұрын
Excellent explanation
@iancourter7291
4 жыл бұрын
Craig, thanks for this awesome video. Thorough explanations on these HVAC topics are too rare. I do have a question: when measuring subcooling, for example, how does the suction hose attached to the suction port measure the pressure/temp of the refrigerant at the pre-subooled point within the condenser coil and NOT at the already-subcooled point right there where the schraeder port is? Seems like magic 🤔
@seshachary5580
5 ай бұрын
very educative.Thank you regards
@DJV94022
Жыл бұрын
Basically what i understood is this type of measurment is like playing darts you want the cooling in the evap to happen dead on center that way its not loosing it blower point, by the coolness not being release between after the coil and the lowside port?? But because the evap coil and consensor(outside) are not the same size it has to be right on the dot that way when you hit (heatmode) the reversing valve and the freon in the condensor isnt past its points as well?
@meltycastillo2125
4 жыл бұрын
Amazing information. Thank you i will be ordering this
@acservicetechchannel
4 жыл бұрын
I would be excited to hear what you think of our book, thanks!
@meltycastillo2125
4 жыл бұрын
AC Service Tech LLC yes I will definitely follow up
@willyamaya5908
4 жыл бұрын
thank you brother
@acservicetechchannel
4 жыл бұрын
No problem
@raulrobles2961
4 жыл бұрын
Okay you lost me at about 8:40. You said if you measure 13 degrees of superheat but the target is 17 degrees then we are overcharged. But if our target was 9 degrees and we measured 13 degrees undercharged? Wouldn't we be fine if we got 13 degrees if it was suppost to be 9 degrees? We would be over?
@MrGaryb1965
10 ай бұрын
I'm working as a boiler operator with building automation that is controlling a lot of the HVAC systems. I'm trying to gain extra knowledge. It's been somewhat frustrating for me because I haven't really been shown a lot. One thing that is totally frustrating for me is from one program to another and from one person to another is the terminalogy.
@drdickqueso
3 ай бұрын
Superheat takes place in the top of the units and compressor. Sub cooling takes place at bottom of the units and metering device.
@communityfarmingtv4795
3 жыл бұрын
Best video ever
@mjreeves3
Жыл бұрын
The only thing I can’t wrap my head around is why the liquid line service port pressure reading is indicating the saturated refrigerant pressure (and therefor temperature). Is it due to the incompressible nature of the liquid refrigerant post-phase change?
@saeed2farsi
4 жыл бұрын
Craig, you are the best
@acservicetechchannel
4 жыл бұрын
Glad to help Saeed!
@MrUbiquitousTech
2 жыл бұрын
Great information, thank you for sharing!
@emylrmm
Жыл бұрын
excellent explanation!
@tntheatingandairllc
4 жыл бұрын
Great video buddy I have the books and cards and they are great 👍
@acservicetechchannel
4 жыл бұрын
Thanks a lot for taking the time to write this note! Awesome!
@humbertomacias3239
6 ай бұрын
Digital manifolds make the job so easy.
@acservicetechchannel
6 ай бұрын
Yes, i just start teaching new techs this way and then when they can calculate themselves, move to digital probes!
@IrivbojeDickson
3 ай бұрын
Thank you very much sir for the tutorial, please sir,is sub cooling and superheat applicable in car A/C that uses r134a refrigerant?
@HumbleBrownWarrior
4 жыл бұрын
Just bought the books on amazon thanks.
@acservicetechchannel
4 жыл бұрын
Awesome! Please let me know what you think of the book after reading it!
@dirt5547
2 жыл бұрын
You're what is called a parts changer.
@DJV94022
Жыл бұрын
Welcome to america where we got it and not wait 1 month for parts ona island so you gotta fix it one way or anothet
@davidibarra125
11 ай бұрын
What is the formula for replacing rectangle duct to circle duct to get the same air flow though duct
@bigbub2118
4 жыл бұрын
Great video man very understandable
@yuriigorg721
3 ай бұрын
How do you know how to set correct superheat ? For different units - different superheat.
@acservicetechchannel
3 ай бұрын
Great question! Look up acservicetech charging with superheat for videos on that!
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