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Sent this to my new guy. hell yeah!

great explanation!!

Thanks! I have the SMAN 360 for a couple mini split installs I did and wanted to see microns of vacuum. My friend has an R-22 system with a leak. The past two years his A/C guy has added 57 lbs of NU-22 at $100/lb (crazy when the whole bottle was $200 a couple years ago). I'm not sure if he evacuated out the original R-22 or just added NU-22. They should not be mixed says the internets, but keeping an old system going for another year I wonder if it's something some just do. I'm not touching it!!

What I’ve never understood is; a heat pump uses the compressor as the primary source of generating heat, not the outdoor coil. The outdoor unit has to expand and therefore cool the liquid below outdoor ambient so the coil (evaporator) can boil the refrigerant by adding heat from outside air and preventing liquid compression. Everyone says “we use heat from outside to heat inside” but in reality, we sort of don’t. We use that heat energy from the outside air to simply change the state of the refrigerant, enabling it to be compressed. That heat energy gained is minimal, and the majority of the ‘heat energy’ is added by the act of compression. Thoughts anyone?! Ps… love your videos Ty!!! Big fan from 🇬🇧

Honeyyy, I shrunk my hand!!! 😄...

Thanks Ty. For. The. Very nice information Very helpful on HVAC

This dude's such a loser

Can you tell me if a mirage 220v inverter life12 has a low pressure switch

Ty, lubrication should never be applied to the backside of the flare or the threads. Lubrication on the flare backside and the threads reduces a feature called nut factor or k-factor, which is essentially the level of friction between the rotating parts to the non-rotating parts. The MFR torque specs are for dry threads that have a higher nut factor. Lubrication will cause an over-torque condition. The backside of the flare is NOT a functional seal area so lubricant adds nothing but over-torque risk. I appreciate you guys pointing out that torque wrenches are only calibrated in one direction unless otherwise identified. That direction is clockwise, with the top side of the tool. In the case of click-type wrenches that side is the side that has the MFR logo. This can get confusing in the field when the piping is in the vertical orientation. Click-types can add more confusion since one side of the wrench has imperial torque values and the opposite side has metric values.

Have a question. What would cause suction/liquid pressure to rise very slowly. Was working on a Goodman heat pump with a piston at indoor unit in cool mode. When system comes on suction pressure would drop to about 67psi and very slowly rise. Liquid pressure same thing about 219 then slowly rise. Readings finally stabilized Suction psi 115 Saturation 38.4 Superheat 8.7 Liquid psi 267.3 Saturation 87.9 Subcool 15.9 Indoor temp 70/69 Outdoor temp 69 Temp Split 21 PSC motor med speed The initial pressure drop is expected with a piston but it seemed to increase very slowly. Just wanting to know why.

Very knowledgeable Great job!

Amazing Instructor. Because of you I will not fail learning the reversing valve.

why not just take the red hose off, open red then open blue and suck everything back in then remove blue?

5:42 😅

Lets say there is no pressure in the system. Must have a leak. How do you find it without putting more freon in the system? This was a great video!!

What a great explanation. I was struggling in my motor control class, how all these components works and create a ladder diagram. This is a great help to understand all the logic. Thank you so much.

Do you remove the core depressor on the low loss fitting (with ball valve) connected to the vacuum pump for better flow?

Best explanation on the net! You need a digial whiteboard software for your videos. I think many guys will just see your thumbnail or start watching but will stop shortly after since you are not suing a digital whiteboard that you can overlay on the video.

ruclips.net/user/shortsnW1_M7sefRc?si=q-ntk2POdLxQAGZM

Nitrile gloves

The video is not focused in an angle that we can see the area clearly, the explanation is clear and understandable but again the angle is not the best sadly.

This video should be called " why not to reuse refrigerant "

I have a Ruud furnace. Problem is about 80% of the time the inducer motor keeps running until i lightly tap on it with something. Other than that everything seems to be working fine. Any ideas please?

Still learning from you!

thank you for all of your topic it helps me a lot for I am and HVAC technician here in middle east hoping your topic will continue as what I said thank you very much

You can't get into HVAC without electrical knowledge. I've an AAS in HVAC and an AAS in electronics, still these units are challenging

I’m a newbie with a manifold so forgive me if my intuitive is wrong but, when disconnecting, can’t you just leave the low side connected, disconnect the high side and run the excess liquid line refrigerant through the manifold to go back into the low side?

Dang. My valve stem leaked out all my refrigerant. My A/C guy just charged me $50 in R410 and $325 for the valve core replacement. Never again.

Thank you for your ever giving knowledge..In UK here and still and apprentice. I am struggling to understand the concepts behind Delta T and DTD since the unit used in most US lecture contents is Fahrenheit..shall I keep it simple then that all AC coils are designed to have Saturated vapour temperature of 😮4 deg Celsius!!!! I'm this case 75 deg F( 23.9Celsius)Return ----40degF(4.4Celsius) SVP/T equals to 20Deg Celsius Set point!!

Bravo,bravo,bravo!!!

Hands-down, the best explanation I could find online and in books in regards to saturation, superheat, and sub cooling. Bravo!

Your wife is going to kill you if she finds out you poured refrigerate oil in the measuring cup.

Copper gaskets are still very much a thing, still used on vehicles and other things

Videos like this benefit both pros and amateurs alike. Many of us were taught the wrong habits from old timers who never looked at torque specs for example

Are there upgrade kits to replace the piston for a direct txv replacement?

13:15 - 1. Below saturation heat must be added to the refrigerant to form the first _bubble_ of vapor (to begin boiling). Enough heat is then added to the refrigerant is then added to get all vapor. (superheated vapor - bubble point) In a pot of water heat is added to form the first bubble (bubble point temperature). 2. Above saturation heat must be removed from the the refrigerant (subcooled) to form the first drop of _dew_ (to begin condensing). Enough heat is removed from the refrigerant to get all liquid. (subcooled liquid - dew point) When the temperature of the air goes below the dew point temperature, the first drop of condensate forms on the outside of the metal duct (dew point temperature).

GREAT TEACHER! WOW! WISH I COULD CLONE THE MAN! KNOWS HOW TO COMMUNICATE EFFECTIVELY

What if I did reclaim from liquid just wondering

A very good video on push to connect fittings. I hope there is a part 2 where you test the pressure ratings of these fittings. If they work as advertised they would definitely be a game-changer!

❤

Solid

Do i have to remove grounding cable and pipes before i use megger if i have elcb?

The small black hole. ❤😂not too different actually. That was great.

This video is offensive. Stop being such a scarred man wth.

Hello I want to add my comment the beauty of refrigeration depends upon thermal properties refrigerant. For existing refrigeration units all are calculated and designed so only need to troble shoot the breakdowns. For new projects it is very important to learn thermal properties of refrigerant, so easily understand and can play in Refrigeration

I am in HVAC school and my teacher puts your videos on, thank you

I would have liked you to touch on the stop point. How did you know it was empty?

bravo

That was an exciting interview. Thanks for keeping us aware of his life and accomplishments and for leading the Gorrie group.

Awesome