I have 38 years in residential construction. I'm currently in hvac night school. I get as much or maybe even a little more out of your videos and book. I just wanted to take a second to thank you.

@acservicetechchannel

2 жыл бұрын

David, thank you for your encouraging note!

@ZeldaxLegacy

Жыл бұрын

Same, friend. Not as many years as you,but this channel is far more educational than my schooling is. GL on your new adventure!

@turboskywalker9108

Жыл бұрын

Yeah going to class doesn't teach you the actual work that needs to be done it's all legality and policies and what NOT to do 😅

@jollyscaria1922

10 ай бұрын

R22 suchion 65t70 dis.. 270 320... aR410 suc..110 to 125 . Dis 430t0450..

@Voyager23B

6 ай бұрын

He is the best! I purchased his manual and it has been my go-to reference for HVAC for years! I always refresh myself by watching his videos.

Excellent videos...I use them as refreshers...Retired, but still working the trade occasionally...Keep moving guys, keep using your brain and learning...Keeps you younger than those who don't..My only wish is they'd land on one refrigerant for the AC.

Best video out there explaining the pressures. Thanks 🙏🏻

I’ve been relying on your info since learning HVAC at fast paced multi family apt complex maintenance dept. , as this particular industry doesn’t lend itself to exacting practices. Appreciate

Very helpful! I’ll tell you this! The hvac company’s I’ve worked for before never taught me this. N they never checked Freon like this guy!! Wow!!!

Dude, this is the best tutorial video I’ve seen. Thank you SO MUCH

Did residential instal as a kid now I’m on a offshore platform as a electrican and one of my responsibilities is keeping the 30 year old AC running and lord it’s whooping me but I appreciate your help on this

Thank you Mr Mig. These are basics an apprentice like myself NEEDS to know. Your content is the first I have ever seen to identify these targets. Thanks again. Loving your book!

@acservicetechchannel

2 жыл бұрын

Robert, loved meeting you over at Bryan's place. You are a heck of a guy and the company where you are at is extremely fortunate to have someone like you! Well ballanced, intelligent, determined, sales experience, professional, respecful, the list goes on!

Thanks for ❤. That is the best explanation of the sub cooling and super heating in the air-conditioning system.

Very well explained, Thanks Craig!

This guy is an excellent teacher

Thanks! I'm starting to grasp it. Excellent video!

thanks, Craig for sharing!!!!! you're the best man!!!!...

thanks for the sharing knowledge. very Helpful

Great job, thank you brother. You are so talented

Great job Mister Rogers thank you for all that information

@acservicetechchannel

2 жыл бұрын

Ha ha, nice, thanks!!!

Great explanation!! Keep up the great work

@acservicetechchannel

2 жыл бұрын

Thanks a lot Bruce!

This a very nice art and animations on how home AC works. Thank you.

Very informative! Thank u!!!

VERY good Info.----- THANKS !!!!

MAN thank you for taking your time to teach

@acservicetechchannel

Жыл бұрын

Glad you enjoyed it!!!

Great video! 👍🏽

Craig, I just purchased some of your troubleshooting guides, HOPE, they are as good as your video instructional video's!!

@acservicetechchannel

2 жыл бұрын

Well, we put a lot of work and testing into those so hope you enjoy them. They presently have 4.7 stars out of 5 on amazon. Let me know what you think after using them for a bit!

my friend, your a wealth of knowledge, thanks so much

@acservicetechchannel

11 ай бұрын

I appreciate your support!

👌🏾👌🏾👏🏾👏🏾 always a good refresher watching your videos. Easy to understand and thorough. Thanks

@acservicetechchannel

2 жыл бұрын

Thank you so much!!!

very good tips

Very informative lesson. Thank you sir

@acservicetechchannel

5 ай бұрын

You are welcome!

Well done

Great information 👌

@acservicetechchannel

2 жыл бұрын

Thanks a lot Neilvester Victor!

Gracias Professor muy buen CONSEJO 🙏🙏🙏👍👍👍😍

Great content and I've been searching for a log time! Thanks!!! I had a tech check my A/C on an R410A Rheem unit. As soon as he saw the high side was 320 and touched the small line and said it was too hot (it was on the hot side vs warm) he said that the coil was not good. It was 95 degrees out. The coil seemed clean and it was clear and in good condition (no corrosion). We hosed down the coil and the temp went down but he re-confirmed the coil was bad. Can a coil be bad if it seems okay (air flows through is that the fins look great)? I trust the A/C rep but for my own learning.

R 22 or R 410a can be checked with ONE gauge as though you are charging a WINDOW UNIT (package unit) whose copper tubes start having low pressure and build up frost on them. You tap into a small copper line with a tap and use one gauge and check the one pressure for a specific temperature.

Very impressive sir

Thank you sir! These are essential viewing for new techs.

@acservicetechchannel

2 жыл бұрын

Thanks a lot! Show them to your apprentices!

Thanks again for the videos, always appreciated! 🍺🍺🍺🥃🥃⛳🎳 Stay safe. Retired (werk'n)keyboard super tech. Wear your safety glasses!

I saw many articles about min. of 10 degrees superheat at evaporator suction line and 20 degrees at near condenser to avoid flooding back from compressor manufacturers. So my question is which one we should go by, In Texas, ambient temp can be 75f in the morning and 100f in the afternoon. My ac superheat taken at suction line on the outside unit can be 5 in the morning and 20-25 in the afternoon. I keep my thermostat setting at 77 degree throughout the summer. If I depend on the target superheat from my outdoor dry bulb and indoor wet bulb temp, it could be 0 superheat sometimes according to the chart.

Good information like always

@acservicetechchannel

2 жыл бұрын

Thanks so much!

Awesome video Craig great information

If you think that s a lot to think of, try charging a low ambient unit with a accumulator and a receiver when its o OA.

Thank great info

Unfortunately in the field, it’s quite different then in a controlled classroom setting. Let’s assume the unit was installed correctly for the space, then this is a good lesson. However in the field we all know a lot of times that is not the case. High efficiency condensing units run cooler and CFMs can effect TXVs. So the easiest way is to use your suction gauge and check the charge under a high load condition.

@taiwanluthiers

8 ай бұрын

I notice what looks like a capillary tube from the condenser before it leads to the liquid line. I'm not sure what it's there for but it really causes the liquid pipe to feel cold. I got a mini split and I guess things must operate differently in a mini split.

Great video.. I been running into problems like not being able to get my low side above 100 psi.. can you make a video explaining why and solutions

Good informasirion

Because R 22 and R410 a on the PT chart has pressures as though they are mixtures I would use them in such places like a window unit that is low on freon, like a small package unit as though as you only need to check one pressure for specific temperatures.

Hi nice video please make videos on r407c ,405 and 134a also about pressures

The pressure windows that you state for both high and low side pressures work for residential, commercial, and industrial units? Or only certain HVAC system settings?

Very good information bro what is the replacement for r22 Freon and what would be the gage reading thanks

The reply was we only use sight glasses in refrigeration not AC.. When I started doing AC in the early 70's many Carrier units came with sight glasses, car AC came with sight glasses. If you have say 10 degree sub cooling you should have a solid flow of liquid in the liquid line.. I do realize units with multiple rows of small tubing are easy to overcharge.

On your quick reference cards the troubleshooting ac systems card, what do you mean by capacity on the chart? Btw these are awesome...like my own cheat codes

I am a 40+ year HVAC&R service tech, I usually use temperatures when working on space cooling systems I work on have 4 different refrigerants, in addition to refrigeration systems

@abulhobatte151

2 жыл бұрын

Question here man so is this R22 PSI values for all split type ACS whether 12000btu 18000btu or 24000btu etc or is he talking about HVACs here

Oh yeah also are you making a furnace and a boiler quick cards in the near future....like b4 heating season cause ill buy them

If a system is properly charged should the low line coming into the compressor be sweating on a hot day while the system is running?

If the temperature allows, pour cool and super heat in the air conditioner, freon r22 and r410

great video! Thank you

@acservicetechchannel

6 ай бұрын

Glad it helped!

If it capillary tube is using for the metering device,what methode should it use for charging? Is it superheat or subcooling?

Hey man I’m new to all this and I wanted to know what my low side and high side PSI should be at my temperature outside are between 80-100f

Great vid. I think we should STOP thinking and learning and talking refrigerant pressures, and just use saturation, line and air temperatures.

@acservicetechchannel

2 жыл бұрын

Exactly!!!

If the low pressure sensor is open due to low charge , how do you allow it to run prior to checking charge ?

Hi. I was working on a commercial A/C 12 1/2 tons. I checked the CFM. I'm close to 5000 CFM. Lines are about 60 feet. It's a un it with 2 compressors 2 Things 1: When I try to get 10 subcooling, it may play between 3 degree to 12 degree. 2: I can't get a superheat between 10 to 15 degree. it stay between 22 to 25 superheat. The suction line outside is about 20 feet. My questions are: The fact that the subcooling is changing that much, should I change it? Also: if the superheat is that hi, is it another reason to change it?

Would you have similair info on R32? R410A is getting uncommon. New installations tend to be R32.

Should we charge R410a using liquid or gas vapor to the suction line?

Working on a unit with a 4-5 degree subcool when I add refrigerant the liquid line temp increases with the head pressure still giving 4-5 degrees SC. I change Evan filters. I replaced condenser fan motor that was overheating. What am I missing here?

Great stuff as usual Craig! Lately, we been using R 427 and R 407 as replacements for R22. However, our gages only have the common readings: 410, 404, 22. How similar or different are the temperatures for 427 and 407 to R22?

@TheDave5619

2 жыл бұрын

You can download a PT chart app on your phone and input the psi on your low gauge and set it with the r427 or many others and it should show the temperature of the that refrigerant. And you can compare

@tttota5421

Жыл бұрын

Can you use 407 to any brand and do you usually clean the line set Bc this guy wants to charge 200$ per pound on R22 🤣 witch is not worthy

@brianosegueda3622

Жыл бұрын

We use 407 as replacement for R22, however, we do NOT use it on heat pumps because R407 is a blend.

@juntang72

Жыл бұрын

@@brianosegueda3622 why can’t blended refrigerant be used in heat pumps? R410 is being used widespread in heat pump ,it’s blend too

@sawdust85222

Жыл бұрын

@@brianosegueda3622 410a is also a blend. Will you elaborate on why you don't use 407 on heat pumps?

does these value applies to 1.5HP split type ac that is running R410A?

How do you charge the unit when it start cycling because it doesn't have enough freon in it won't stay running so how do you charge it

Clear as mud.

@acservicetechchannel

8 ай бұрын

It takes a while to understand. Its not as simple as just pressures, thats for sure!

@Ojeramup12

8 ай бұрын

Totally agree.@@acservicetechchannel

Hello, thank you for this video. I have a question - my R22 bottle has the red and the blue valves but my R22 manifold has the yellow input house. Do you know by any chance where I connect yellow house? To the red or the blue valves?

@sawdust85222

Жыл бұрын

I would suggest not connecting them to anything!

What if I have TXV metering, but my condenser nameplate doesn’t have sub cooling target? The manual doesn’t show it either.

What the low ands high ranges for heating. Inside temp, 70 and outside temp 30. AC works fine but the heating does not. Duct temp gets up 90 and then gets cold. EH temps n after a few min. Just had the R22 topped of. the HVAC tech said, pressures are fine, did not resolve the problem. this is 2 x now on the same problem. Not defrosting, OD fan is still running. It might be a bad DF board? I'll check it later today. Or the pressures are still low? That is why I'm asking. thanks!

Is this with the system running ?

If you have a 3 ton blower and 3.5ton AC is that system going to freeze up? Thanks

@jasonfields4663

2 жыл бұрын

Txv or fixed?

Had a question do you have a book on electric heat

@acservicetechchannel

Жыл бұрын

Not at the moment, just the new Inverter mini split book and the air conditioning/refrigerant book at www.acservicetech.com thanks!

Thank you! Do you have a link to the tools you are using in regards to the digital meters? Thanks again!

@acservicetechchannel

2 жыл бұрын

I have all the links over at www.acservicetech.com/tools

Question some people love sight glasses, some people say they don't work well with 410a ??

@acservicetechchannel

2 жыл бұрын

We don't use sight glasses for air conditioning, only refrigeration. In ac, we measure subcooling to see not only if the refrigerant is in the fully liquid state but how many degrees of subcooling are present, thanks!

a mini Split only for heating. should i mount it on the floor or on the ceiling ? or in the middle ? Can someon answer the question ?

@amealnet2495

Жыл бұрын

Floor.

Да я с тобой согласен. Минеральное масло не дружит с синтетикой..... у меня была проблема: агрегат 64года на фреоне 12, вот я вспотел ( запчасти нет в продаже уже очень давно)

What if my my label doesn't specify the TXV rating? Has other pieces of info but not a TXV rating.

@acservicetechchannel

2 жыл бұрын

It should say subcoolin grating on the outdoor rating plate or on the under side of that shroud. If it doesn't and it is a single speed unit, 11 degrees of subcooling can be used, thanks!

@MaMa-qh4dy

2 жыл бұрын

@@acservicetechchannel My older Trane heat pumps don't give a target subcooling. Instead, the service facts include a graph chart plotting liquid line temp (horizontal X axis) vs liquid line pressure (vertical Y axis). Within the graph is a slight arc line that indicates the proper charge. At the intersection point of your X and Y values on the arc line, is below the arch line, then add refrigerant. If your intersection dot is above the arch line, then recover refrigerant. I don't know why Trane does this method. Seems like a little extra work.

How many years should freon last my unit is like 4years old maybe 3 and its blowing a lil cold and warm could it be freon or capacitor?

@PhillipCooperNCState

Жыл бұрын

Refrigerant (aka freon) will out live the equipment... If a leak develops within the system, the refrigerant will leak out at a rate determined by the size of the puncture. A slow leak can take many months before the comfort level is noticeable. And most likely, the capacitor has nothing to do with your situation.

Is it possible to know how many pounds are in the unit

I know that putting switches in parallel in electricity is actually a short circuit when closed! Just to add a point somewhere!

How to determine super heat besides reading

नमस्कार सर जो वीडियो में जो टूल्स दिखाते हो वह ऑनलाइन अमेजॉन पर उपलब्ध तो होता है पर इंडिया में नहीं मिल पाता। इससे बहुत तकलीफ होती है न्यू ट्रलस नहीं मिल पाता है और काम करने में काफी दिक्कतें होती है Hello sir The tools shown in the video are available online on Amazon but are not available in India. This causes a lot of trouble, the new trullus is not available and there is a lot of difficulty in working.

A coil with capillary tube,,is that the same as a piston ?

@practicemakesbetter7132

2 жыл бұрын

A capillary tube or a piston controls the amount of liquid entering the A coil by restricting liquid flow, if you overcharge a system the low side gauge pressure will be above normal and the low side gauge pressure will be above normal. A TX valve controls the flow of liquid with a temperature sensing bulb, the TX valve maintains a steady A coil temperature, as a result the low side pressure remains relatively stable, even if the system is overcharged.

@dennisqwertyuiop

2 жыл бұрын

Yes I know that they only talk about piston and txv valve,, so is cap tube same as piston?

@acservicetechchannel

2 жыл бұрын

Yes cap tube and piston both fall under the term "fixed orifice" but the piston chamber can bypass refrigerant through and around the piston itself when the refrigerant flows in the other direction where the cap tube needs an external bypass, thanks!

I’m not going to live long enough to understand the hvac technology

Thank you appreciate it can you please ad Arabic caption it will be good

👍

❤❤❤❤

I hope in the future there will be an Indonesian translation

Putting switches from negative to positive is a short circuit when closed!

My boss says mix 22 with 407c. I hate it. According to the maker you can add up to 25% of total charge without adding oil but the saturation temps are too different for my liking. There is no good replacement imo.

Am looking for a job plz in any HVAC companies

My 410-A Says 200 Blue and 400 Red😬😬😬

still have no idea what all means. sounds alien to me lol

You guys really try to make this harder than it is. My r22 unit was 60 psi and was freezing up. I pumped one can of r134 in there and it’s not freezing anymore. I put r134 in there because a tech told me he didn’t use r22 anymore. He wants me to pay $9000 for a new unit when all I need is Freon.

😬😬😬😬😬

Junirt

Please Hindi language channel create sir

1 (maybe a stupid) question, can you keep on adding refrigerant (when it's known to have a tiny leak - takes 1 year to stop cooling) weeeery slowly while checking what temperature comes out of closest point to evaporator of cool air entry inside the house? another words, add 6oz of 410a wait and check temp inside with a infrared temp meter, if its still to high like 60F add another couple of oz, wait and check temp inside again? and so on?

How can I get one of the book I am from Guyana and will happy to get one of these book so I can make my work a little easy

How come all of the Tecnicians I call just vent refrigerant off into the atmosphere when we know its destroying the Ozone layer? ie usually if they find it overcharged.