R-22 and R-410A Operating Pressures on Air Conditioners! Checking the Charge!

Clear as mud.

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

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

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?

Please Hindi language channel create sir

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.

❤❤❤❤

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

I hope in the future there will be an Indonesian translation

😬😬😬😬😬

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

thank you .

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

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?

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

Am looking for a job plz in any HVAC companies

Very informative! Thank u!!!

Had a question do you have a book on electric heat

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

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?

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

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 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?

Best video out there explaining the pressures. Thanks 🙏🏻

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.

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

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?

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?

This guy is an excellent teacher

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

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.

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.

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.

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

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

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.

Junirt

MAN thank you for taking your time to teach

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

My 410-A Says 200 Blue and 400 Red😬😬😬

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.

Very impressive sir

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?

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.

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

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

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.

very good tips

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!!!