Disconnecting and Removal of Mr. Cool 27k - DIY Ductless AC and Heat Pump 

Sorry to hear about your system going down. Mine is currently down but it cools the garage and it’s not a priority at the moment. It’s give me an F6 error on the inside units. I’m sure it’s simple enough to fix or replace parts, after all it’s a diy system. HVAC companies in my area won’t service them either. Mainly because they don’t get to charge the absorbent rates to install … these systems are cutting into their profits.

Glad i was able to help. good luck

Glad it helped… my units are reinstalled and were functioning until mice got to it. I have to fix some wiring but other than that it’s functional.

Even with the self closing linesets the Mr cool units come with ?

Yea, the fittings on the lines will self seal. You’ll need to be a little careful about the charge in the new condenser… don’t want to over charge the system

Any time! Glad it helped.

Thanks for the feedback, your probably right but when I spoke to Mr cool this is how they told me to do it. I’ve seen other videos doing what you described and I think your right, however i didn’t lose much if any measurable amount of refrigerant when disconnecting. I’m going to have to do this again on another system. I’m going to do it the way your describing, when doing so does it matter if it’s on heat or cool?

@@Ratherbemilling how does one get in touch with Mr. Cool? I cannot find a support email or phone number

270-366-0457 Is the number I found on their site. You can also fill out the contact us form on their site. They usually get back to you within a day so don’t expect an immediate response.

Oh that sucks… chances are you lost the refrigerant in the condenser… the linesets will close on their own. Probably not worth the effort to reconnect the old ones if you have a new set.

@@Ratherbemilling thanks, my buddy said he didn't hear anything escape out of the lines when he disconnected them but I did wonder how much of the coolant was left in the machine

@@soundofsilence21 When I disconnected mine a little did escape but the units work fine so far ... i'm guessing theres a little over charge but i'm not an expert so who knows. Not sure how much is actually stored in the machine verses the lines. hopefully everything works out ok. As a side note, all the HVAC techs in my area are prima donna's ... they won't work on anything they don't sell (at absorbent prices) I finally found one guy that would work on my units if i need. There is no difference between brands, the excuse they all use is not knowing the volume of refrigerant in the system. News flash - every brand is different!! The solution is to pick up the phone of email the manufacturer with the model and serial to get the require info. NOT THAT COMPLICATED!

@@Ratherbemilling oh yeah same here couldn't find anyone to touch it. But they wanted like $7k-8k before COVID to install their own units. I'll try to update here once we get the lines connected. Stupid question, but do you know if the lineset is required to be hooked up to provide heat?

No you can’t. It is brazed onto the connection inside the unit. It’s best not to mess with it unless you know what you’re doing.

@@Ratherbemilling it has the same mech as the long line set. If you remember when installing. You use two wrenches to screw the small line set from the air handler to the long line set that goes to the unit. Shouldn't it be the same? Because I need to move the air handler as well as the unit.

@@kai6424 oh sorry, I thought you were talking about removing it from the air handler, yes, you can certainly disconnect the long line sets from the short line set, and it will be the same function. They will automatically close.

@@Ratherbemilling Thanks for the reassurance. I appreciate the video and reply.

@kai6424 no problem glade to help.

in the installation manual on page 30 they reference "King Valves". They might be making the wrong reference but thats where I got that term from. Thanks for your input.

There’s a valve similar to the quick connects on air compressor hoses at both ends. They want you to close the valves so not atmospheric moisture getting into the system. From what I understand there is not a piece metal that pierces a seal. The idea is to not loss refrigerant and no need for a technician

Yes that’s correct. As long as you didn’t monkey tighten the fittings you’ll be fine. Make sure you follow the correct procedure when opening the valves with the Alan wrench. It’s more stressful than it sounds… if you got this far you’ll be fine.

Unfortunately I don’t but there are many videos on installing them. Basically it’s all the same just follow the steps listed in the manual. It’s very easy.

Yes

There are tabs on the back of the unit. You have access through small slots in the bottom of the head unit. I think they are kind of in the middle of the unit. You will need a flathead screwdriver

Hi, thanks for watching!! I haven’t reconnected the unit as of yet. It’s been disconnected since the middle of December. Hopefully it will be fine… but if not I have a company that will work on it… before disconnecting I confirmed I could get help with repairs.

Yup reconnected and working perfectly.

@@Ratherbemilling thank you, I have one I need to move and was hoping I would not have to get an HV AC guy involved

@miked.cargotrailerconversi5689 you shouldn’t as long as you follow the instructions carefully. I would email Mr.cool and get the instructions for your specific unit. Mine is just a guide to show how easy it can be. HVAC guys are great but we don’t always have to use them.

​@ProfessionalHomeowner you didn't need to have the hvac guy suck it down and top it off? You just reconnected it, turned on the valves and all was good?

@BEANS-O-MATICtransmissions that’s correct, I had a tech check it but it was fine.

I thought the same thing. However, I did this according to instructions from the manufacturer. If I have issues I guess we’ll find out when I go to reconnect. Is there a way to check the lines ahead of time so I don’t contaminate the whole system?

@SerpentDrago Interesting, how would you say you know this for a fact? I ask, because I know for a fact that I have connected and reconnected my 24k MrCool 3rd Gen 3 different times and every time has worked perfectly. In fact, it's working in my living room I'm right now on a scorching day and it's so cold I have it set to 76 degrees and my wife is still complaining. Literally everyone regurgitates this nonsense. Think about it... MrCool had to get EPA authorization for this DIY setup. You think the EPA would approve it if a homeowner could just disconnect it super easily and then the refrigerant would leak into the air? Do you even have a MrCool unit? If you did, you would see the connections have double o-rings and compression fittings.... meaning, that there is an airtight seal before the "metal discs" as you put it, are pushed back to open the flow. I used to be a helicopter crewchief in the Marines. The fittings on the mrcool units are very similar to our the 4k psi removable hydraulic fittings we used on certain parts of the hydraulic system. @professionalhomeowner it'll work just fine bud

Hi, what is the correct way to do it? And reconnect in the new location? Your insight would be much appreciated.

@serpentdrago, Hi. What is the correct way to do it? And reconnect in the new location? Your insight would be much appreciated.

Thank you for your reply sir. I had a professional reconnect the units last week, turned them on and now they are functioning perfectly! Only reason I didn’t do it myself was because one line set was not long enough to each the new location, so we needed new lines to be charged. Regardless, everything is working perfectly!