How to charge mini split yourself, DIY 410a refrigerant, save money!

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REMEMBER TO PURGE THE LINES! I started to film right after purging the lines, but just reminding you to get the air out of the lines! Purging........ On the yellow hose, 1-connect to tank, and gauges. Slowly open the valve on the REFRIGERANT tank as to slowly release some refrigerant 2-On the gauges, slowly unscrew yellow hose at manifold until you hear air out, should just take a second. Quickly tighten. On the blue (suction) hose, 1-Fully tighten hose on the HVAC unit, and on the gauges. 2-Slowly loosen connection on manifold, the remnants of air in the line will bleed out at the connection to the gauges, (you will hear the sound of air coming out) at the manifold connection, and you can quickly tighten immediately after. It is a split second thing! For best results, use a scale and weigh the refrigerant! That means that if it is not working properly the refrigerant must be removed and weighed, then recharged to the amount listed on the out door units tag. If you have low refrigerant, YOU HAVE A LEAK!
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How to charge mini split yourself, get 410a refrigerant, save money!
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network. This video and description contains Amazon affiliate links, which means that if you click on one of the product links, as an Amazon Associate, I’ll receive a small commission. This helps support the channel and allows us to continue to make videos like this. Thank you for the support!

[@DEtchells]

IMPORTANT NOTE: You need to purge a little refrigerant through the hose connected to the refrigerant tank *before* connecting to your gauges. You do *not* want to get any air into the system! If you don’t purge the hose, you’ll inject all the air in it into the system.

[@SaveGreenHere]

Yes Dave, that is mentioned on the video description, but thanks for the reminder for everyone.

[@barryl8491]

What a simple, straight forward video. Spent 30 min searching around and countless videos to just confuse me untill i came upon this one. Thx!

[@SaveGreenHere]

Thank you!

[@LongTrout]

Save money... love this video.... best thing to ever happen for many split companies and HV AC contractors. Keep up the good work.

[@SaveGreenHere]

Thanks 👍

[@carpetgeniepsl]

Thankyou. After looking at many videos, your was the best for my family. Saved 300

[@SaveGreenHere]

Great to hear!

[@Henryse]

Sweet! our system is revived, because of your video. Thank you!

[@SaveGreenHere]

Great to hear!

[@prenticelennon3087]

Thank you Thank You THANK YOU!!! We are having heat wave in LA and my house was so hot and now it's cooling down!! My dogs thank you too!

[@SaveGreenHere]

Glad it helped!

[@themongooser7199]

Thank you for the video. My 410a was delivered today and I just got done recharging my 24k BTU Mr Cool. PSI was at 75 and wouldn’t get my garage below 80. It was basically blowing warm air. Turned the AC to 73 and went outside to recharge it. Took about 5 min, As soon as I walked into the garage I could feel the cold air again.. Since I installed the split system myself I had all the tools already. $75 for a bottle of 410a is way better than $500 for a service tech to do it.

[@SaveGreenHere]

AWESOME! Glad you got it, and glad you are cooling now!

[@doddgarger6806]

Fix the leak!

[@Freedom_Aint_Comfort]

Thank you so much for your video I tried it on my Senville two air handler mini split. Aura model 18000btu. It worked like a charm but only after the third try. I must stress to everyone please bleed the lines. Make sure the air conditioner is running when you’re hitting this psi Mark. Again bleed the lines, bleed the lines on the gauges. If you ever have trouble DM me. I can explain to you in detail what I did. I don’t make KZbin videos much at all. My leaks were s result of loose connections. All my refrigerant leaked out so I charged it from empty. Lord bless.

[@SaveGreenHere]

Great share, yes, very important, it was done prior, but also ensure you fix the loose connections BEFORE adding!

[@dannyluong9246]

Please show me how to charge it from empty (for multi-zone). Thank you

[@patrickpham1704]

Paper wadder: Please show me how to bleed the line. Thank you

[@eddiename8727]

This video is very helpful, thank you for taking the time to help people like me.

[@SaveGreenHere]

Glad it was helpful!

[@djchiesa3567]

I am grateful for these videos. I'm a widow in N.Ca. and the contractors are constantly trying to gouge me. For a single ductless minisplit (21-24seer 18-21 btu) unit I've been quoted 6000-10,000. Costco has a mrcool 21seer/18but for $1,500 now I need to get a friend to help me install. I already had the electrician (his bid for a lot of work was 3.8K where most bids are at 7-10K for electrical work) install the 240/40amp circuit & outlet.

[@SaveGreenHere]

Even electrical seems high.

[@stevecha3612]

Any recommendations if the unit has 5 line sets (5 units inside the building that are controlled by the one outdoor unit). Would you have all the indoor units running and is there a specific port to use for filling since there are 5 line sets?

[@PhiNguyen-pc9qg]

Thanks for the video. Do you know if the procedure differs when you have more than one zone?

[@jimc8665]

Great videos, thank you. Question: I have fujitsu flex dual zone with an AOU18RLXFZH outdoor unit, are the ideal low side pressures the same 117-120 with both evaporators running indoors? Just had a big snow storm up here in CT so it will be a while before I can run it in AC, but the system has had that water running sound along with gassing sounds after cycling off. Fwiw, its been doing that since I sucked it down, released the precharge and started using it last summer. No leaks according to nitrogen test or electronic leak detector since then.

[@upbeatgroove]

Great video and thanks for the help. When adding refrigerant from a 410a tank do you keep the two valves open that you open with Allan wrench when releasing the precharged refrigerant from the outside unit upon installation or do you close them. Thanks again.

[@lardo5150]

YES THank you! Getting ready to do this. Did you do anything with the valves? Did you turn them off or you just hook it up and ahve it running to add the juice? Talking about the valves you turn to release the refrigerant into the system.

[@ShannonRawls]

Thanks for giving us the game!

[@SaveGreenHere]

Your welcome!

[@sierrasurvivor1798]

One other question. When beginning to add the refrigerant, should both high and low pressure valves on the outside unit of the minisplit be wide open?

[@infonator1]

Hello, Can you hook up directly the yellow line on to the 410a refigerant tank or do you need the on /off valve adapter? Thanks.

[@khalidjy7110]

Does the 117-120 psi range apply to different sizes of AC units?

[@donatasnuobara8107]

Can agree with many, that video is really great! Would you be so kind and comment how you add refrigerant to air to water heat pump? Unit on and on heating ? What psi I should look for to check if it has the right amount of refrigerant? It's R410a. THANK YOU!

[@jamesjuhcomery9291]

How to bleed the refrigerant line before you add it back to the condenser?

[@stacktier8257]

Brilliant, thank you.

[@SaveGreenHere]

You're very welcome!

[@marcoendara719]

I connected the hoses to charge my Mitsubishi mini split and it looks like it has 150 psi. Does this mean it is overcharged and I need to remove some of the 410a to get to the 120 psi? The unit is running in cooling mode and the temp outside is 75 and 90% humidity. What is the best way to get it to the sweet spot 117-120 psi? Thanks

[@georges2569]

On the yellow hose at the gauges don’t remove that hose just slightly open it up till you see the Freon coming out then just simply tighten it up and then proceed on what he’s describing you need to get the contaminated air out of your hoses first

[@SaveGreenHere]

Correct. A split second is enough until you see refrigerant come out, so you can purge it.

[@turnerfam540]

Just found your channel, and absolutely love the content!! I have an LG24k three zone unit. Would I be able to use this same process and shoot for the 117-120 psi? Thanks so much! Subscribed!!

[@SaveGreenHere]

There have been some variations with some manufacturers and models, so look at the manual. It's there on the ones we have installed.

[@owenz3831]

Thanks for the tutorial! The AC guy told me that the freon is 1-2 lbs lower than normal two weeks ago. I followed your instruction and made sure all the hoses were securely connected. However, the gauge shows a low side pressure of 0 (the AC is running fine). But it stayed at 210 psi when I release the refrigerant into the unit (is it the tank's pressure?) Do I need to open the service value to get the pressure readings?

[@WorkingTimbersCo]

When disconnecting the blue line will I lose refrigerant?

[@Captfuntastic]

Thank you for posting this. I have 2 mini splits that need recharge every 2 years that costs me close to $500 each time I call a service tech. I got everything for less than $200 and should last me 10 years

[@SaveGreenHere]

Glad to help. However, you may have a really small, slow leak if you need recharge every two years, and should try to find out where the source is. It may be at the ends. Try this, it works extremely well, and use it when you have to add refrigerant again, and you may never have to add refrigerant, as it's a closed loop system.... amzn.to/3edDJsX

[@Captfuntastic]

SaveGreenHere techs have checked everything and even new line sets and pressure test. They told me (2 different companies) that the flare fittings are what leaks and are a poor design. I loved these ductless units in the beginning but I would never do this again and cannot recommend them anymore.

[@SaveGreenHere]

@@Captfuntastic You need to use this. Otherwise, you are asking for it...... amzn.to/33zQLz6

[@Captfuntastic]

SaveGreenHere tried that already

[@cengeb]

@@Captfuntastic Flares made right don't leak, mini splits are great, a good flare tool matters too

[@winefarmer1]

Is the procedure the same for a multi-head system?

[@diysolaradventures7894]

What if you think your mini split is empty of freon and your compressor is barely running at all do I perform a pressure test and do I need to pull a vaccum before I add fresh refrigerant 12,000 btu Senville low presser no refrigerant

[@ricardoresendiz5460]

muy buen video carnal gracias por allí darle a la gente gracias

[@SaveGreenHere]

A la orden Ricardo y gracias por suscribir

[@mlwee6796]

Thsnks for showing how to open and close the valve. Can you make a video to show where the blue and yellow hose are connected.

[@SaveGreenHere]

Hey Mo! You are welcome! The other videos we uploaded cover that...... kzbin.info/www/bejne/iJ_HnXZvnJp7sLM and kzbin.info/www/bejne/mJDEqqZ7pbN_m9U

[@Commsprepper]

You have an awesome channel.

[@SaveGreenHere]

Thank you so much!

[@SaveGreenHere]

Purging........ On the yellow hose, 1-connect to tank, and gauges. Slowly open the valve on the REFRIGERANT tank as to slowly release some refrigerant 2-On the gauges, slowly unscrew yellow hose at manifold until you hear air out, should just take a second. Quickly tighten. On the blue (suction) hose, 1-Fully tighten hose on the HVAC unit, and on the gauges. 2-Slowly loosen connection on manifold, the remnants of air in the line will bleed out at the connection to the gauges, (you will hear the sound of air coming out) at the manifold connection, and you can quickly tighten immediately after. It is a split second thing!

[@ovm4133]

SaveGreenHere oh ok thank you so much for the info am gonna do that today 🙏🏼

[@SaveGreenHere]

You should be fine!

[@Maxima7380]

@@SaveGreenHere , do you have a video on how to get the R410A out of a wall unit and into the compressor so that I can replace the wall unit?

[@garylespron7-WS]

Nice! 👌Thanks for sharing ✌😎

[@SaveGreenHere]

My pleasure!

[@rj2764]

It is 6 degrees outside and I put my pump in cooling mode but the outdoor unit will not come on because it is too cold any suggestions?

[@richardday2893]

Hi buddy What's the sweet spot for R32 please?

[@balfome]

How do you add EasySeal Ultimate LS? Can you do a video on it?

[@CasaDelGato]

Failed recharge. sigh. I recently installed a new Senville 18K btu unit. Did a 1.5 hr vacuum test, no problem. Finished setup and started the system running. (note: It's winter!) It started heating just fine. Then I got a call and had to leave for six hours. Came back - and it wasn't heating anymore. Turned it off, and checked the Freon pressure. it was 0. Apparently the system developed a nasty leak somewhere. Since I had shortened the lineset (I only need about 20'), I assumed my flaring job wasn't good enough. Due to shipping snafus, I had a spare lineset (25'), so I just replaced my shortened one with a factory built one (and looped it). Since I had to wait for the Freon to arrive, I did a VERY LONG (4 day) vacuum test. It held vacuum. It's 36 deg F outside. Since there was no freon and I didn't want to run the compressor when empty, I did a slow fill to 100psi. Then powered up the system, and was able to fill it to 115psi. Wouldn't go higher. (freon too cold??) Yes, it's in Cooling mode - as I do have an alternate heat source in the house. Let it run for 15 minutes - no cooling, blower running inside, the fan on the outside unit is NOT running, but I can hear the compressor running. Pressure hasn't changed. Tried flipping it to Heat mode, and waited 15 minutes. No heating inside, inside blower running, outside fan and compressor running. No heat. Pressure hasn't changed. Gave up and shut it all down. Any suggestions?

[@CHS10901]

Did you open the valves from the compressor to the lines? Towards the beginning of the video, he said don't try and add refrigerant to these ports. Ask me why I know? Been there, done that. Once you have the lines all connected, take the caps off and open the valves on both the high and low, you should hear a hissing sound as the preloaded refrigerant goes from the compressor to the lines. Open the valves all the way until the stop and then see if you get the heating and cooling desired. This is somewhat off the top of my head recalling from a couple of years ago, but I think there was also set of a master valves on top of the individual ports on my unit as well, so you might want to check that as well.

[@dew117]

Thank you for for sharing . The best practice for mini split is to start from zero ... Pull the vacuum and add refrigerant by weight. Anyway, I also top up my 9000 BTU gree inverter.. During topping up, I keep monitoring psi on the gauge, current from the clamp meter , temperature on suction line , temperature from supply vs return air on evap unit. I turn my ac to turbo mode or max cool... run for a while ...and adding refrigerant... My sweet spot Gauge psi.. 125-130 Current getting close to RLA (it is ok for mini split to ramp up to RLA on turbo mode... We are not gonna keep using turbo mode all the time in real life, right?... The current will go down when on normal operation. Super-Heat keeps fluctuating in the range of 5 +-3, which is normal Delta T or return air temp minus supply air temp on the evap indoor unit is between 15-20 degreeF

[@SaveGreenHere]

Thank you for sharing!

[@alvaroalcantartejeda2836]

How to test mini split went it doesn't even turn on , how many psi when ist of should be reading.

[@davidbyer4558]

Please bare with me as Im not a HVAC tech. Here goes. I just purchased a LG 22000 btu 1 zone mini split system. The unit comes pre-charged for a 25 foot line set, but I need a 35 foot line set to reach my living room,so I purchased one.. I believe after watching your 2 videos I would do this.....1) Install the system with the 35 foot line set. 2) Vacuum out the line set down to -30psi , wait a while and check for pressure leaks. If there are no leaks, my next step 3) would be to release the R410A which came pre-charged in the unit into the system. 4) Then I would check the pressure in the line set with the vacuum gauge to see what the psi is and then add as much R410A..... which I would have to purchase separately, to get it to between 117psi and 120psi.. Im pretty sure there is no need to purge the system. Does this procedure sound correct....thanks PS the manual says to add 0.38 oz/ft. So that should be about 3.80 lbs.

[@SaveGreenHere]

Yes, sounds like you should be fine. It will be very critical, to use the sealer, amzn.to/367xEf2 to ensure no leaks at the connections. Hope you have your refrigerant already. Ebay seems to still have it, but there's an industry push to eliminate sales on the web. You can get 11 pounds for $107 delivered to your door, and that's not bad considering retail market prices.... rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575339965&toolid=10001&campid=5338199104&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FR410a-R-410a-R-410a-Refrigerant-11lb-tank-New-Factory-Sealed%2F202661144956%3Fhash%3Ditem2f2f8ba97c%253Ag%253Au0YAAOSwz4Zc%257Er2V%253Asc%253AFedExHomeDelivery%252133990%2521US%2521-1%26LH_BIN%3D1

[@dhuff9844]

Thank you!!

[@SaveGreenHere]

You're welcome!

[@fishycomics]

Thank you. a great Reference to doing things: I have the gauges adapter and 410A thanks to a friend. i have fujitsu AOU24RML1 4lb. Design pressure High side 450, low side 240 It has two 9KBTU units to one machine? I should add to 240 psi if I am LOW. I'll look for one with the same machine to help on. appreciate some advice

[@robertberin4872]

If you have removed all the refrigerant from the system than you should put back the specificfication weight of 410a.

[@dannyluong9246]

@@robertberin4872 what port do we have to use to fill up refrigerant? (for multi-zone unit). Thanks.

[@AlphaEntInc]

Thank you for the refrigerant link. I will have all the supplies I need to get this done. QUESTION: When beginning to add the refrigerant, should both high and low pressure valves on the outside unit of the mini split be wide open? What about when doing a back pressure test with Nitrogen. Are they open or closed? I don't want to mess up the compressor or anything by accidentally shooting nitrogen in there if its not supposed to be. Thank you for all your help. Watched the ads for your channels ad revenue. Will be watching more of your mini split electrical wiring videos tomorrow.

[@bkhoavo]

You're not ready for this bro.

[@crennie6928]

Thanks for the informative video. Just have a question about any possible air in the system or line when you attach the canister to the unit. Is there anything or any way to bleed out the slight amount of air that is in the line/hose before the refrigerant is added? Thanks!

[@SaveGreenHere]

Put ball valves on, like these.... amzn.to/2Q0jO81

[@crennie6928]

@@SaveGreenHere I have not seen those, but that seems like a great way to do it. Thanks!

[@patmac]

Great Vid Thanks. Any other suggestions for sourcing 410A. The like above is dead. Tx

[@SaveGreenHere]

You have to click the second link in the video description where a bunch of related links are at. Here it is anyway....... ebay.us/YKjza2

[@wasimedoo7994]

Very good information what size of AC you put the Freon in and what was the in temp

[@SaveGreenHere]

That was a 9000 BTU system and the temp was around 100 degrees in the Summer.

[@ahmedlz9495]

what is the mathematical relation between the PSI and the temperature cuz the right PSI must be read in 25 C° so how can i calculate the right psi in any given temperature ?

[@mytubeyear2009]

Great video, Thank You! What fan speed do you run the inside unit at while checking and adding refrigerant?

[@SaveGreenHere]

Highest.

[@mytubeyear2009]

@@SaveGreenHere Thanks!

[@ericboisselle1145]

Thanks!

[@SaveGreenHere]

No problem!

[@ericboisselle1145]

thank you help me a lot!

[@SaveGreenHere]

Glad it helped!

[@deanroadifer6013]

If you go to the support section from the manufacturer of you mini split they will send you a chart showing the proper PSI needed according to the temperature outside and the temperature inside. This will be more accurate.

[@SaveGreenHere]

Thanks for the info Dean!

[@elkhunter307]

Is this static or dynamic, static pressure should be 120? Dynamic meaning the system is operating.

[@johnjames9821]

Is this 470a compatible with the r410a that is already in my machine or do I need to do a complete purge and change over? thanks

[@jordansybrandt9664]

You can't mix different refrigerant types

[@lifegreats]

Hello, great video and would be easy to do here in the summer however it is winter right now. Can this process be used while the unit is running in heat mode? If so, what pressure should I look for when in heating mode. According to your video, the sweet spot is 117-120psi when running in cool mode.

[@SaveGreenHere]

Has to be on cool mode.

[@vegasromaniac]

Great to know

[@SaveGreenHere]

Thanks!

[@thomasrogers7614]

Brilliant 👏

[@SaveGreenHere]

Thanks.

[@ltgengr]

Is the sweet spot of 117-120 the same on all model/size split systems?

[@SaveGreenHere]

Depends on size of the unit, and the outdoor temps.

[@paxlepham]

Thank you for your refrigerant. I have ordered a 5 lb tank. My question is do we need to turn the A/C on while we charging.

[@SaveGreenHere]

Yes you do

[@paxlepham]

@@SaveGreenHere thank you so much. And another question, i have a problem with my liquid line that was leaked and lose all the refrigerant inside the hole. After that my inside unit has some noise. Hence i need to fix my liquid line and cleaning the liquid line of the insides unit. Could i pump down like the way you show on the other video and fix the liquid line?

[@newpass9434211]

question, when your releasing the freon in increments..the 2 valves on the condenser..should they be open or close?..if you can please clarify.i appreciated. am just confused, because when your doing a vacuum to your system to make sure there ar no leaks, your suppose to have the valves closed, and then after open the 2nd valve for 5 seconds and close it again, and then remove the vacuum, and then you open both valves again..so for charging the unit, do they have to be open or close...thanks

[@SaveGreenHere]

When we did this, there was no refrigerant on the system, and it was vacuumed. We did another video on the vacuum process here on our KZbin channel. Always best to use a scale as well. In this video, the tube of refrigerant was within an ounce of the total refrigerant the mini split label indicated for the system.

[@danielduran4537]

Thanks for sharing

[@SaveGreenHere]

My pleasure!

[@abujabi]

Do you need to have your unit running while you're charging this to get the right pressure readings?

[@SaveGreenHere]

Yes

[@jeremymoore450]

Hi I have a ductless split pioneer a/c system and I believe it needs more refrigerant also. Where do you get it? can you use the stuff that works in automobiles or no? R-410A? the link for the small bottle doesn't work that you posted above? Thanks, Jeremy

[@SaveGreenHere]

Look at the side of your unit indoors, the label will tell you how much refrigerant you need. If you need 2 pounds or less, this is a good option...... ebay.us/UMOOEg but if for some reason you need more, like 5 pounds, try this one.... ebay.us/xWoD5Y and for 25 pounds, try this...... ebay.us/PQCoux

[@cliffw6084]

Thank you for your video. Are the service port valves open or closed when charging?

[@carlf8224]

system needs to be running.

[@SaveGreenHere]

Open.

[@larryacord8969]

are you talking about the 2 valves that have to be opened with an allen wrench? I wondering if they need to be opened or closed?

[@jonmax-np9ze]

I have a dual zone Mr Cool, was wanting to know do I add freon to both zones or does one zone recharge whole system.

[@SuperOpinion8ed]

Probably too late for you personally, but I have a trizone and the manufacturer said it’s three separate systems.

[@billyhsat]

You didn't talk about purging the system that I could find. How do you do that?

[@SaveGreenHere]

kzbin.info/www/bejne/iJ_HnXZvnJp7sLM

[@taiwanluthiers]

I found pressure to be really unreliable on a mini split, especially if it's something with an electronic expansion valve, as they will adjust both the subcooling and superheat on the fly for optimal condition... Mine doesn't have electronic expansion valves, just capillary tubes, but I did it by pressure and feels like I might have overcharged it, as the compressor started becoming harder and harder to start, and dropping the charge (recovering refrigerants) fixed it. When this is done, the AC is cooling better but also the compressor hard start problem disappeared. However on the R22 system the pressure is reading to around 40 psi (which corresponds to a saturation temperature of about -10C), and it would never go above that, but any attempt to try and go over that either resulted in weakening the compressor or even seizing it up. I think saturation temperature adjusts itself based on various operating conditions as well as fan speed (you really want a ton of airflow over the evaporator to get accurate reading). If you look inside a mini split condenser there's a capillary tube leading from the condenser coil before it comes out to the valves. I do not know why this exists but there is likely a reason for it. This does not exist in standard AC units with a TXV. I know some even do it by current draw, but again, it seems unreliable. Weight seems to be the most accurate way to do it. It feels like a mini split needs to be completely recovered and then have the charge weighted out.

[@SaveGreenHere]

Great points! Yes recovering completely and weighing is key, and mentioned in the video description.

[@andrewhicks211]

Does the unit have to be running ? And how do you hook up the hoses with out loosing freon

[@SaveGreenHere]

Needs to be running.

[@ABcustomflooring]

Can you tell me why side panel on mr cool says design pressure low 340psi and hi 550? Is it going to be 340psi rather than 120?

[@SuperCano1997]

340 and 550 is the high side..the suction line ( vapor) is 120..

[@Apollo_Music]

My two pounder ran out during the fill. It read zero and got it up to 105. It's working but I might have a leak

[@SaveGreenHere]

Get this.... amzn.to/3VoUy9N and see the video on how to use it here.... kzbin.info/www/bejne/noLNgJuNoKygg5Y

[@alfredoandroid357]

Thank you Thank you Thank you Following your steps i was able to fill my system I have 2 zones I hook up the gauge to the 1/4 inch pipe like you said and I was scare at first because when I hook up the gauge it was at 50 but when put it on cool and turn on the system it will drop too zero It didn't exactly match your video but I knew I didn't have a leak because I pressure test the system and ran a vacuum before So I just said fuk it and follow your video it was on cool and the system was running the gauge was at zero but as I put gas in the gauge will go up little by little until the gauge read 115-117 sweet spot Also I went to each unit and the air went from just cool air too actually cold air I think in your video the system probably had more gas then my system or maybe because my system is 2 zones that why its started at 0 when I ran it Thank you, I really appreciate the help, gonna check to see if you have a donate page like with PayPal want to send you $50 tip for your help bro

[@SaveGreenHere]

You are welcome! On your question, my Paypal is [e-mail] Thanks, much appreciated!

[@alfredoandroid357]

Gonna send it tonight or tomorrow, thanks

[@deanmarsh2544]

Once you have opened valves with Allan wrench to release refrigerant into system, do those lines remain open? Do you ever close them?

[@spazzman90]

No, do not close. Closing will reseal the lines to the compressor and no refrigerant will flow.

[@deanmarsh2544]

@@spazzman90 Thanks

[@janvanderlinde3039]

to the < is open to the > is close🤣

[@SaveGreenHere]

All valves closed except the blue one. Best practice is to vacuum out the lines, done before video). Weight the refrigerant on a scale, according to what the label on your unit says, Example, 1.5 pounds. Slowly, open the blue valve, and let the unit run on cool, and open the blue valve and allow some refrigerant, and let the unit stabilize for 15 minutes. Adding refrigerant is a step that requires patience, and the proper tools. Unfortunately not many have either, lol.

[@marilynmiller2132]

Gauges on Amazon have arrival date of late July 2022. Are there other gauges that you recommend?

[@SaveGreenHere]

These are literally next day...... amzn.to/3GOvOC1

[@jimc4731]

Where can I buy a new port that you fill the unit through? It is that brass fitting attached to the AC unit. Mine has an extremely small leak under that large cap next to where you are filling in the video I found the leak with an infrared detector, very small but it does leak! Thanks if you can help! JIM

[@SaveGreenHere]

amzn.to/43A5o1i

[@ricknieto175]

When charging the mini split or adding freon does it need to be running or off???

[@SaveGreenHere]

Running. And on cooling mode.

[@leevogel9487]

When I removed that adapter I lost a bunch of freon and oil on my new mini split, should I add a little more oil? And do I add freon if needed with the outside unit on or off? Sorry for the questions I do not want to mess this up.

[@SaveGreenHere]

ALWAYS add wit unit running in cooling mode. You will always lose a bit when removing the fitting. Nothing major.

[@jamesburkman7357]

Is this true also for multi unit splits?

[@ADEHMMO]

Hi, Should the AC be off when doing this ? And thanks for the amazing video. It's crystal clear.

[@SaveGreenHere]

Needs to be on, and in cooling mode.

[@daviigs]

What would be the sweet spot if I have 1 condenser and 5 air handlers?

[@glenmoore8494]

its f5 different lines so each line would be 117-120

[@peternguyen2776]

Top informative video

[@SaveGreenHere]

Thanks a lot

[@Apple23]

Do I do this while the mini split is running? Or off. Do I close the coolant line from the outdoor unit to the indoor unit?

[@SaveGreenHere]

Do this running in COOLING mode.

[@doccotter]

Hi, I installed a new 2 zone Lg Mini Split. Getting error code 35 for low pressure after running for a few minutes. I Hooked up the gauges and added only a little 410a. When the fan is running the pressure is at 120 and when the fan stops the pressure is at 68. I’m still getting the CH 35 error code for low pressure when running the unit. The pressure doesn’t seem to be changing. Any advice? Thank you

[@SaveGreenHere]

CH35 means you are seeing the low pressure sensor error. This error can be caused by any of the following causes: Overload operation (outdoor fan constraint, screened, blocked) Refrigerant leakage (insufficient) Bad connection of the pressure sensor Bad compressor sensor Bad PCBA You should check for any leakage, or if there are any blockages on the unit. If you are still not able to fix it, we recommend a local contractor to have it diagnosed. lghvac.com/professional-locators/contractor-locator/.

[@johnkillborn8955]

If it's a 2 zone system do you add refrigerant to both ports or just one. Does a 2 zone share refrigerant or does each zone have their own?

[@tomjong4141]

Turn both zone on to the lowest temp highest fan and charge from any port or port A if it has a mark.

[@SaveGreenHere]

Make sure you are in cooling mode when following the tips from Tom Jong

[@dannyluong9246]

@@SaveGreenHere I have a three zones system was leaking, now the PSI turns down only 50-60. Some one told me to release out all of refrigerant and recharge full amount as factory required. Please show me how to release out of refrigerant. Do i need to turn the system on while fully charging, and what port i have to connect for that. Thank you very much.

[@Fab24hdumans]

Do I need to have my AC running? Sorry if it’s a stupid question..

[@SaveGreenHere]

Yes it needs to be running. Not a stupid question at all.

[@spiderstone]

If I'm just checking does it need to be running to check how much is in there?....I went to check it and it really came out...should I check it when not running..thanks subscribed

[@SaveGreenHere]

Yes, it needs to be running, and on COOLING mode.

[@sarahmacisaac1]

I bought the small tank and have a auto manifold but I can’t yellow hose is to big. What connect should I buy? It’s different from the one that hooks up to the mini split.

[@SaveGreenHere]

From what you mentioned, you need to have an adapter...... amzn.to/3AytMVa

[@timpro2829]

You seem like the guy to ask after watching your videos! I installed a dual zone system myself but had an HVAC Tech make the final connections and vacuum the system. He shortened one of the linesets by about a foot, and the other by about 4.5ft. Can this method be used to check to see if it's overcharged? The unit comes pre-charged for two linesets 16ft in length. The reason I ask is my unit seems to be a little louder sounding than I expected as I hear others say it's pretty quiet, and sometimes I feel it's output could be a little better. Mine sounds like a vacuum when it pumps to the indoor heads, though it is also up on the wall above a walkway in between the neighbor's house, so I'm not sure if thats what's making it sound louder. Are you able to advise whether the vacuum sound is normal? It's not a suction sound but it sounds like a vacuum motor which I presume is the compressor. If I do need to remove refrigerant do you have any advice? I'd rather not call the same guy back as I don't think he knew what he was doing, and I've been having a hard time finding any company that wants to touch it since they didn't install it.

[@SaveGreenHere]

Hey Tim, if the guy that did the work used his gauges, even after shortening the lineset, I am sure he measured the proper amount. As far as the noise, I would personally compare the sound level, measured in db (decibels) from the manufacturer, with an app that measures decibels. Best to do this when there is no traffic, loud sounds such as dogs barking, etc. Another contributing factor in it being loud is if it's in an alley, for example, where sounds resonate back and forth, and simply bounce back from building walls. It's a simple law of acoustics. Sometimes, the decibels is printed on the label of the outside unit. Download a sound meter app and check it, as compared to the manufacturer decibels. If it's close enough to the manufacturer specs, then I wouldn't worry about it.

[@timpro2829]

@@SaveGreenHere thanks for the quick reply! He didn't use gauges afterwards, only when he vacuumed down the unit, which is making me guess his work. It was almost impossible finding someone wanting to do the job but he came out and said he knew what he was doing. I'll download an app and see what the current decibels are at. I'm thinking the resonating might be my problem as it's above a walkway with about 4ft to the side of the next house, so that could very well be what's happening. I just took the dog for a walk and I could clearly hear the hum from my unit about 2 houses down.

[@ericlebar7035]

Hi i have a toshiba eco902sqn eco air split unit system we tried to refill but could not to find the port to connect the refill gas to have you any ideas where it is we opened it and looked everywhere and couldnt find it.

[@SaveGreenHere]

Look at the area where the copper lines lead up to your outdoor unit. Sometimes the refill port has a cover on the outdoor unit that is there and can be removed with a few screws.

[@ericlebar7035]

@@SaveGreenHere Thank you ill have a look

[@unclebuck5051]

would it be the same for an inverter style minisplit in terms of the pressure and indoor reading?

[@SaveGreenHere]

Always best to weigh the refrigerant and make sure yours system is empty, which was the case here.

[@unclebuck5051]

@@SaveGreenHere Was the case where?

[@hangsu5724]

Thanks a lot for your video. It is really helpful. I have a R410A refrigerant FUJITSU minisplit with model AOU24RLXFZ. In the label, it said design pressure high side:450psi low side:240 psi. It looks the lower sider PSI is pretty much higher than your normal 120 psi. Currently, my low side pressure is 125 PSI and AC is not cool enough. Does it mean I need to add more refrigerant to achieve 240 PSI on lower side?

[@AlekseySmolenchuk]

Same question, I'm seeing Hi 550 PSIG and Lo 340 PSIG on a Senville 09CD

[@jimcroft1387]

@@AlekseySmolenchuk Those are test pressures.

[@Ultimatelocke]

I could use some help with an issue I have. I have a Blueridge mini split that has a leak it's been dead for about 2 months now. What would be the best way locate the leak and since it's not been working for 2 months I'm sure all the R410a has run dry so would I need to refill the unit in order to find the leak? What would you recommend doing?

[@rdewitt3468]

Use nitrogen tank to put pressure on the system then listen or use a soapy water mix to spray on it to look for bubbles.

[@bsd3662]

@@rdewitt3468 you did not answer the question , he has NO refrigerant in the split. how does he fill it ?

[@bsd3662]

can you run the mini split with out any refrigerant in it to use your methid to add r410a .Will this hurt the compressor?

[@NW_drew]

@@bsd3662 he can’t fill it with no nitrogen. Needs to be vacuumed, pressure tested, and then refilled with 410. He needs a technician that is qualified.

[@NW_drew]

@@bsd3662 your mini split won’t even operate without refrigerant.

[@user-bk6kl4ok5v]

Does the min split need to be running to add the refrigerant. Mine is empty do to a leak.

[@SaveGreenHere]

Yes, it needs to be running, and in COOLING mode.

[@PTHPHX]

​@@SaveGreenHereShould inverter be set-up and run on 100% speed and 60 fahrenheit? Thanks for the video, very informative 👍

[@reggaevybzradio1]

was the unit running when you were charging it. also my manufacturer said the static pressure should be at around 200psi so would the 117 still apply for mine

[@SaveGreenHere]

Unit has to be running.

[@arodandjeter1]

Static pressure has nothing to do with refrigerant. 200psi Is wayyyyyy too much

[@allach1772]

@@arodandjeter1 even when unit is off ?

[@nickwolfenbarger7002]

Does compressor have to be on when you are checking those pressures?

[@SaveGreenHere]

Yes.

[@shanefrank3281]

I thought with inverter systems the fan speeds, compressor speed and metering device are constantly changing so you weren't able to tell the state of charge by just looking at the pressure (or the superheat and subcooling) like you can with a single speed system.

[@spazzman90]

You are correct. I'm not sure he mentioned this being an inverter system. That being said, I'm installing a couple of inverter systems. I forgot I wanted to check pressure running at full speed. I will do that when I'm finished installing the second system.

[@lyonnnnnnnn8]

Can I use this 410a refrigerant for a senville split unit? Thanks

[@SaveGreenHere]

Yes, absolutely. The label on your Senville should read "410a" under refrigerant type, so just verify that.

[@MyJeremy79]

Will my mini split go in to cool mode for charging in winter time. Its low 40s here

[@Gripmagic]

There is usually an emergency function button somewhere on the interior unit that will allow you to turn on the AC even in cold weather

[@mgladden2]

Great vid! Hey No one has a video on removing part of the charge on a minisplit that has shorter lines than the built in charge was designed for. Can you please do one? I feel like it's just release the full charge into the lines, start the system, and slowly recover via the suction side of your manifold into a recovery tank while monitoring the scale until you reach the weight that matches the pre-charged weight minus the final weight your line length requires. Is that correct?

[@SaveGreenHere]

Yes, you can use a scale if there is some, you can recover it and use a scale. In this case, there was ZERO refrigerant on this system.