Excellent video. Good job. Thank You.

great video, thanks for keeping it simple

Excellent Tech on Tube

Thank you for your Information!!!

Great job!! Thank you!!

super!!! thank you, sir, for sharing!!!!!.

Great video

Hello Dave, As always an excellent video. I appreciate going old school and discussing the process. I found the comment that complained about not using a digital gauge to be the complete opposite of learning anything. In fact, the people who only learn that way: put this here and that there, and look at a screen result, are really not getting the point of this video. Also, they could screw it up backwards and not have any more of a clue. Appreciate the effort and fully understand that when your making a video your looking at a bunch of things besides just your work- like the camera, and that some times a little thing or too isn’t perfect. But the old school explanation, and the adding and removing was a real good plan. Your only other video better than this one is the ice bucket challenge from a year ago or two….

Omg you forgot to purge the low side hose .....there goes the system ... Fyi

So when you recover refrigerate bc you added too much do you just shut the recovery machine off ? To see if you recovered the right amount for ur sub cooling ?

great video!

i have quite a bit to say. First, subcooling is used to measure systems utilizing a txv. or eev. metering devices. Second, Not all manufacturers list subcool ratings on data plate/sticker. Third, when subcool ratings are listed, the manufacturer requires the use of a charging chart, provided by them, in both the technician literature and a chart on the inside of the service panel. Fourth, a psychrometer is essential to proper charing of of any system R410A, R22, MO99/R44, R134A, etc.. Always measure wet bulb and dry bulb temperatures! HVAC systems are designed to increase the quality of lives of individuals, protect people's Investments and better quality of life and they're trust in you to provide it. Do it right the first time.

On a York 3.5 ton unit model YCJF42S41S1A R- 410A on the same cages in this video it read 135 on side of the Gage and the other circle gauge read 300 is this within range? He did add 1/2 a pound which gave us these numbers on the gauges.

Very well Done.

Perfect work sir i'm also dealing with R410a much but not quite sure if you can recover the charge as liquid as it was

Súper cool that video.

Good video

Don't forget to verify superheat after charging. Incorrect super heat can still kill a compressor at correct sub cooling.

5:20 - You meant to say recovery unit and not “reclaimer” here, right? 6:12 - Where’s your scale?! 6:41 - If you didn’t purge your suction side hose off camera, you just shot a hose full of air into the unit! 11:42 - Again, where’s your scale?! 12:43 - A hose full of air just went into your recovery tank!

Is the sub cooling value fixed between 9-15 or does it change from one gas to another and from one air conditioner to another? thank you

Do you have to use a filter drier when recovering refrigerant?

I just a a coil change in my unit it aluminum inside consinser coil . It messed up my whole system it takes way tooo long for the my temputure to drop I mean if it's 95° out I understand it may take hours to get to the set temputure or 70 but it does not take 12 to 14 or. A day and on half and temputure drop on my thermostat 2 temp. What could be wrong could the technician disnt put right refriegerens or charge in my unit I do have a r410 unit ...

Thank you for sharing this video. What is the amibient tempearture in this video?

Wy do i ned the recovery unit wen i have about 300 pounds on the liquide line, can i connect directly to the recovery unit, and take same liquide.

Did he open both the high side and low side valves when recovering?

Safety my buddy...gloves!

Thank you. now I can work on my own unit

Hi! Amazing video! Thank you for creating this type of content. I recently installed a new Rheem 16 seer 3.5 ton system (RA1642AJ1NA + RH1T4821STANJA) at home and pressures are low side 140 /High side 305 at a 81F outside temp night here in florida. During the day with 92F outside it was at around 175 on the low side and about 300 to 310 on the high side. Does that mean Am I low in refrigerant? The system is cooling but I feel it takes too long to lower temp inside. Like 1:45 or more to go from 72 to 70. Any advice would be greatly appreciated, thanks in advance.

Hey guys, We actually to go back and put the rapid recovery machine back on the system and recover (blow charge out) some (almost all) the refrigerant we added due to multiple factors contributing to the low gage readings. Then we actually had to come back and add more refrigerant due to multiple internally contributing factors of the system. Then after all that we had to put the charge where it initially was... hahaha sorry guys... Matt actually contributed to the end results. Silly guy...geeze..... I could sit here and explain what was happening but, idk if we have the capacity to understand why it was running at such a low capacity.... noooo he said it doesn't remember.... I've changed enough of them to know so, I'm not arguing.....

Great Video, Easy to follow, Good Instructor

Way to go ACE.

Good information, nice job. In the market for a new meter, do you recommend the SC440 meter?

R410A is a mixed 50/50 of R125 and R32 refrigerant. That whole point why it's charge in liquid form is to get 50/50 equal mixed of both refrigerant. The old method of purging and burping the hose will cause problem because it alters the composition of refrigerant. Use the vacuum pump to completely remove air from the refrigerant tank, yellow hose and manifold.

Very cool info. Thanks.

Thanks for the great video

You always use a scale and you HAVE to wait 20 mins tops for everything to stabilize or you didn’t get an accurate charge.

Hi, as you add r410a to increase subcooling. What happens to the low side pressure and saturation temperature? Do they go up or stay the same? Thanks

He reminded me of my Instructor back in tech school.

You can take refrigerant out by opening the discharge/ red hose and charging hose hooked directly to the recovery tank.

What about if you are running it as a heat pump? Is the procedure the same?

I’ve been told a few times to always close the king valves when you are gonna recover the gas so you pull oil from the compressor. This pulled a pound or so and I didn’t see him shutting the king valves off. How high is the risk of pulling oil out if you recover 1-2 pound of gas?

On a clean or new condenser wouldn't the liquid line temp be basically reading ambient air temp?

Hi may I move my condenser unit while still connected about five inches or am I risking a leak thanks

hi i have 4 zone 3ton outdoor unit that is connected to 4 inside split units. It only has suction line connectors (so i connect liquid side gauge). I noticed the compressor was making noise since we have had 90+ temperature. I checked pressure it was 200, so i purged some gas i noticed the suction line was having liquid. I dropped the pressure to 150. But now the system giving the error "high-temperature protection of compressor discharge". Update: i added back some refrigerant and still system giving the same error. It tries to come on, run the compressor for second or two alarm for high temperature and shuts off.

Why did you install liquid in on a suction line without a vaporizer?

Sir. What is the name of yellow colour meter. I want to buy. That meter you check the temperature

Should purge the low side hose as well prior to opening the valve.

what numbers are ok for temp clamp

Good Job

If you are going to pull refrigerant out of an overcharged system you have to make sure that your tank has been evacuated and he didn't Purge the lines between the recovery system and the tank. If you contaminated system with air you're screwed..

If you recover a portion of 410a from the system, isn't fractification in the gas state a concern?

Can someone please help me explain why my needle in the high side (red gage) bounced back (fluttering ) ?

Does the unit you are working on have a TXV?

Curious.... How would you remotely know where to start charging without first taking door off and glancing at temp and pressure relief chart.

can i turn the ac on connect the blue hose to low port side & add freon without connecting the other side .

is the unit on when adding the r410a?

I think u should take a close look at the suction tem, and pressure because under 32 degrees the unit will start to freeze. Also the refigerant boil in the evaporator at 40 degrees. U should use a scale next time to see how much u ounces u have put in the system. U also dident bave to hook up the recover macgine to remove refigerant. All u should do is to just connect the yellow hose to the tank and open the high side, valve and do a passive recovery when the system is running.

Just curious, why didn't you use a filter drier when recovering the refrigerant?

Why use a recovery machine, just do a passive recovery opening the liquid line? This is crazy to go through all of this to remove a few ounces on an overcharge.

Do u have a video available to check superheat instead of subcooling?

Subcooling txv

What if target subcooling number is not given on the label ?

Thanks

What’s the tonnage on that unit? Does carrier still make that model?

it will be nice if you do replicate with the digital tools.

When you recovering refrigerant does the unit have to be off?

I need 12oz 410a for a window AC. Does anyone know where it is available? I see 5 lbs, 2 lbs, but no 12oz. I only need it to make it through this one season.

When do you use superheat vs subcool?

Any reason for No purging?

Burb the air out the lines.

Sir good day to U I'm very interested watching your video teaching of cooling refrigerant air conditioner. Can R22 and R32 can be used in CHIGO room air conditioner?

Why turn the gun when you are charging

Why didn't the teacher seem to pay much attention to the suction pressure?

Does the condenser needs to be on while recharging?

Why not keep track of how many ounces were added. That would help to determine how much should be recovered.

Forgot to purge the low side hose before charging.

Hi, can you tell me how to find out the seers in Trane unit?

I thought you shouldn't put liquid freon on the low side.

So the subcooling is 17. it’s 7 Fahrenheit above unit subcooling!!!!?????

Why didn't you use a scale?

Will that be the same on an exv or eev?

it would have been helpful if you were using a scale to show how much refrigerant it took to go from 8 to 15. recovering refrigerant should have been done with the unit running and a scale. also use an amp meeter to show how much power is being drawn during this.

The best way to redo an over charge is to recover all of the refrigerant and weigh it to see how much it was over charged, comparing it to the FACTORY SPECS, I am losing my mind over the fact that is see so few instructors relating to the factory specs, simply recharge to the lbs and oz specified and then test. I have not been able to find one video on YT is several days of looking that properly goes over charging a unit from an evacuation.

You did not purge hoses at the begining, non condenser gas inside unit now. No gloves no safety glasses and I am not technician.

The replies seem to have been erased or hidden.

Why didn’t you just stop adding refrigerate when ur temp on ur multi meter hit 82?

10 degrees of subcooling in general ,with you don't have the data of what your system is.

Excuse me sir! You just turnt the botle upsidedown, meaning you are charging with liquid and not gas. Is that a right practice? Some body shold help me here please.

Thank but how can discharge

I would love to see everything step by step if he didn’t talk and had something write up to take notes

damn who braze those lines ?????:))))))

Don’t forget a scale so you know how much you putting in and how much you taking out!

Why didn't this guy use a scale to measure what he added?

my AC unit doesn't have sub cooling value at all

Use digital manifold if this is for professionals.

Fun video. Truly for a pro. Because a pro knows that the evaporator and the area its cooling is probably at 60 degrees or off. High subcool. Tough gig

Puron systems are to be serviced with liquid refrigerant. Puron cylinders have a dip tube so liquid refrigerant is dispensed from the upright position. So why do I always see technicians turning the bottle upside down?

videos like this make me laugh. everything is right there no bending down plenty of space around. little table for the recovery tools. must be nice. lol

I really wish they'd lose the Disco soundtrack. They never play music in a classroom, why do so many KZfaq geniuses do it?

An HVAC guy went to check out my AC unit for a store, he wants to charge me $2000 for 14lbs of r410a recharge and to weld on 3 service ports or some solenoid shits. This is insane.