How to recover, vacuum, and charge a mini split?

[@DondeRob]

The amount of practical knowledge in this video surpasses the amount of theory I spent over $3k in € to get my refrigirant certificates in The Netherlands. Thanks for the insights! Going to watch this a few more times. And of course, I subscribed to your channel.

[@JuryTo]

Thanks for teaching the real expert and no secret

[@TaddyDigest]

My pleasure!

[@TomHyatt-i7z]

So glad you in shorts. See you doing good. Appreciate your info on KZbin .

[@TaddyDigest]

I appreciate that!

[@AskRemy]

hope you a female

[@TVwatcher-ic3ne]

I liked the examples of different charge levels and their temperature splits and super heats. I think that kind of stuff helps build intuition about his things are supposed to work.

[@crowderglen]

The section on mini split fault finding a low charge is most insightful. I will us this procedure next time I'm standing in front of a low charged mini split. Thank you Tad!

[@TaddyDigest]

your welcome

[@jesuscard.1675]

Recovery to liquid port on recovery tank is not bad, but is much faster and better on vapor port, because there’s no dip tube restriction. Great video Tadd

[@crowderglen]

Hey Tad, now it’s winter, could you repeat this low refrigerant demonstration while the mini split is in heating mode?

[@TaddyDigest]

yes

[@Infowarrior-1776]

Another excellent video and I appreciate you taking the time to help others!

[@TaddyDigest]

I appreciate that!

[@PhiNguyen-pc9qg]

Thanks for the great tutorial. For multizone units do you recover and recharge refrigerant from each service port or just one?

[@MarcelHVAC]

Depends

[@MatthewYBarbo]

Awesome stuff here Taddy. Very educational and enjoyed the watch!

[@TaddyDigest]

Excellent, my brother. I love to hear this feedback 😀

[@JesseDoesHVAC]

Most brands come with a pre charge amount. Btw I can see where the refrigerants probably leaking out…them quick connect/push fittings on the lineset are a call back waiting to happen

[@kentronicsNW]

what is the proper way to do this with a 3 zone system Thx

[@michaelmolter8828]

My multi zone minisplit has electronic expansion valves on each zone, so the computer controls the superheat sub cooling by how much it opens the valve. Because of this, to measure the charge, the only option is to pull the full charge out on a scale, and add what your missing when you put the charge back in. A correct charge is less important on a minisplit because of the large reservoirs in the outdoor units and the electronic expansion valves.

[@TaddyDigest]

good stuff thank you for sharing

[@ericabercrombie6780]

Pardon my ignorance (still a learner), but in this situation here, we have a running system with its service valves already opened, and it has had refrigerant circulating through the entire system. After recovering the existing refrigerant, you indicate a vacuum of course needs to be pulled. If using a micron gauge, is there a recommended way to minimize the oil getting on the sensor? For instance, vacuum down and nitrogen purge 2 or 3 times (without the micron gauge connected), and then do a final vacuum with the micron gauge? Or will your gauge get contaminated regardless since you're pulling a vacuum on a system that has already been in service (residual oil on all the piping)?

[@user-or7ys7yk4p]

Thank you so much for all your videos

[@TaddyDigest]

You are so welcome!

[@pimguilherme]

Thanks so much for the tips! 🙏🏻

[@TaddyDigest]

You're so welcome!

[@joemc111]

Wow I thought we needed a license to work with those gauges.

[@dporrasxtremeLS3]

Ding! Tad, this video is Fantastic, Tad! Thanks!

[@TaddyDigest]

Glad you liked it!

[@dporrasxtremeLS3]

@@TaddyDigest Always fun to learn from your channel! Thanks.

[@motocross03087]

Been searching this is super helpful thank you

[@TaddyDigest]

Excellent thank you so much for watching

[@RossWatson-t8w]

Great video a lot of information please do more

[@TaddyDigest]

Absolutely I will do more

[@light8607]

When you’re pulling a vacuum on a mini split after recovering do you close the service valves or leave them open?

[@TaddyDigest]

I leave them open

[@sdrtech]

Need to remove valve cores and yes you got to have a micron gauge

[@washinton2008]

Can you put back the recovery Freon from the tank back to the AC unit

[@MarcelHVAC]

Sure if it is not contaminated

[@bertpainter8385]

I love all the comments chiming in on how to do it professionally. Yet when, as a home owner, you call a so called professional to get work done, a good amount of them, won't go through all the necessary procedures. Not only in the HVAC field, but most any construction field. Trying to get the right tech to work on a job properly can be tiresome. Having experience in the field of choice needed is almost a pre-requisite. Obviously there's good and bad, but the average Joe won't know the difference. And yes, I do have pro experiences in other trades. That's why I learn as much as I can from some of the more professional YT videos who actually teach what it is needed to learn. Being retired gives me that option. And it ain't easy finding the proper techs in any field, that's for sure. I'm not going to say much about what the right videos are to watch for HVAC. Although I will mention AC Service Tech LLC is very thorough.

[@williamgorzelsky6203]

Everybody showes a single indoor unit. how do you charge a unit that has 2 indoor inverters?

[@motocross03087]

Thank you. What’s different with multi zone? Thanks

[@TaddyDigest]

More ports, more sensors, more units, more line sets

[@motocross03087]

@@TaddyDigest thank you. I’m guessing different by unit. My Fujitsu halcyon has a rotary compressor and tech told me it’s an open system so as long as I have all ports open I can recover from any service port and I can vacuum/charge from any port. Recommendation is to for example pull vacuum from two zones at once to help expedite.

[@PhillipFrischman-vo8gm]

Good bro..

[@TaddyDigest]

Thank you so much 😀

[@LitheInLitotes]

I did a successful 300 PSI nitrogen test for 30 minutes on my 15k btu fujitsu unit but my vacuum pump can't get within the range of my micron guage after 30 minutes..... I know there's suction... I tested with my finger

[@GreyRockOne]

Very thorough! Thanks Tad, #giveaway

[@sdrtech]

This superheat method is all wrong it depends on the temperature and the load inside a house

[@TaddyDigest]

You get super heat from a simple calculation Please teach me if i'm wrong

[@sdrtech]

@@TaddyDigest look up superheat chart it constantly changes with outdoor ambient and indoor wet bulb if it's a fixed orifice

[@AskRemy]

way too much work - we need a button - all fixed

[@frankgall6]

I was praying you weren’t gonna teach guys to pull a vacuum through a gauge and no micron gauge? How are you teaching techs to pull a vacuum by sound. I’m let down, seriously man. You know better than

[@JesseDoesHVAC]

@@frankgall6 you can still valve off the pump and watch the needle as long as you dont get a rise over the -30psi on the manifold over atleast a 10-15 minute test…how we did it before vac gauges were a thing

[@frankgall6]

@@JesseDoesHVAC feel free 👍🏻

[@harryschrysan3183]

Bro stop living in the past. 20 years ago nobody would vaccum or use nitro. Just purge the lineset with refrigerant and call it a day and the AC's would last for 30 years. In todays world this is not the case. For better or worse you MUST pull deep vaccum and able to hold it. Also, braze by with first purging with nitrogen and then flowing at a lower rate. That's how is done professionally. I am in the trade 6 years and I see hacks all the time. Just because you installed a system and it works right away it doesn't mean it will perform at its rated capacity or last as long.

[@frankgall6]

I guess it’s home owners that you’re teaching. Professional Techs! PLEASE DO NOT PULL A VACUUM LIKE THIS!!! Look up Jim Bergman evacuation. I’m sure it will come up