Have you noticed the drastic increase in torque values for the lineset couplings from 3rd generation to 4th generation? It's almost doubled. I feel like I'm gonna break to damn connectors or line (especially the 1/4" line) trying to torque to what they spec. No other brand of mini-split specs their flare nut torque anywhere near as high. Seems weird to me. Any thoughts?

Thank you! Glad you found it easy to follow

It's not that hard. Take your time, be very thorough & don't do a hack job, it'll turn out fine.

He missed out an VERY important step,,, he didn't bleed [vacuum] the system

I'm not a HVAC professional, and I can tell you what they're for. A mini split is a small form factor heat pump used in situations where additional cooling to specific locations are needed and/or adding air conditioning to an existing structure where it's impractical/impossible/cost prohibitive to run a traditional split heat pump with forced air. (This is also why they're often called ductless heat pumps.) They're more efficient than older style air conditioning units, plus they can also run in reverse to provide heating in winter. I can't say if they are more or less efficient over traditional heat pumps. Because of this, you see them a lot more in Europe and Asia, where they have a lot more structures that predate air conditioning and forced air systems. Since most US residential structures have forced air systems (either the older air condition and heat systems, like the dead gas pack on my roof, or the more traditional heat pump systems), mini splits are less common in the US. But, there is nothing in the code books that prohibit their use. But their use for retrofitting older structures makes them ideal for use in Europe and Asia. EDIT: Forgot another use case, but you can use a mini split to create a multizone install as well. If you have a relative that likes their area warmer/cooler than everyone else, you could add one of these to give that person a little control over their own area.

If you need help with your install, feel free to check out our remote support page at Patreon.com/diyhvacguy Hope we can help! Dave

Yea if one of the 20amp breakers tripped and not the other it could single phase your unit. To my knowledge, I'm not a pro though.

@@braddillman6014 You are correct. It can create a dangerous electrical situation. Also he should have marked the white wires with black tape, so somebody knows that both lines are hot.

Easy fix. Take a short 14ga solid copper wire and bridge the two breakers. If The breaker switches have holes in them. Some of the newer ones don’t so you’ll have to go with a double pole breaker instead.

@@monroefive-o40 Its unlikely the MFR would warranty that solution they don't even want you using another MFRs breakers in their panel.

@@ericfraser7543Your probably right. It would be best to go with a double pole breaker to start. What I was suggesting was a temp fix. And after seeing the breaker he was using that hack wouldn’t work anyway.

Thanks for the kind words

You can do it!

Thanks for sharing! I’m loving mine so far!

My exact thoughts... I can install 3 of these & still be monet ahead of hiring an HVAC company. I'd be happy to pay to have a top of the line unit installed, but they just make you pay through the nose

It’s not cool until this spring 🤣 thanks!

If you need help with sizing and help with installation, feel free to check out our remote support membership at Patreon.com/diyhvacguy! Cheers

If you need remote help with locating equipment or help with the actual installation, feel free to check out our membership over on Patreon.com/diyhvacguy where for $25/mo cancellable at any time, you can get one on one assistance with all things hvac and a quick response time. Cheers!

Cool is true plug n' play but $1300 overpriced. C & H requires $300 vacuum and guage but is regular price.

I’ve had a few people tell me that. I will be creating a beginners online course soon! Still working on the curriculum and filming as it’s a lot of work! Stay tuned

Should have went Mitsubishi or Samsung. 10-12 year warranty…. Depending on your contractors status.

Daikin is one of the leading brands in multi zone mini splits also. 12 year warranty on them as well. Well hopefully you were able to get it fixed for free!

Glad you liked it!

Yep, and top of the line Lennox systems use the exact same remote..and the condenser cooling fan is exactly the same. I think these things are more or less all made by the same company but just a different name is slapped on them before they leave the factory. It's crazy. You'll pay 3x the cost to have a lot of HVAC guys install a Mini-split. It's a total racquet

That’s very true. I’ll do some research on making a video for that! Cheers

@@diyhvacguy there is a guy on KZfaq that has a Mr cool KZfaq 115 v microwave plug 🔌 video that did it this way but did not show how to do it so was pointless. Here’s the link kzfaq.info/get/bejne/l9STf6tyqLvVn30.html

Part of what makes this DIY friendly is the system is already under vacuum and the line set is precharged. No special tools needed (well, other than that torque wrench and hole saw).

Correct. I totally could have done the install with the supplies crescent wrenches as well. Overall, very easy DIY system to install. It’s been amazing so far!!

Ultimately won't matter. It's the same metal ground plate.

Mrcool has a patent on the precharged linesets, so it’s definitely the most diy friendly. All the other ones, you will need a vacuum pump to vacuum the lines before letting the refrigerant in, but that’s really the only difference. I just posted a video on the copper and Hunter mini split and that is how every mini split will come, with the exception of the mrcool diy mini split. 👍🏼

Yes Evap coil, lineset, and condenser all have a charge 👍🏼

@@diyhvacguy thank you. Give you an idea I’m old….63 ..lol…took 2 years of night school back in 1996 - 1998 while working full time of course. I’m assuming before you were born . Maybe in the oven 😂. Yes you could still get r-22 with the universal certification easily and r-12 was possible to get but expensive but was mostly used the r-12 for cars 50 dollars a pop to top off then. I still have a full cylinder in my basement just lost interest in cars topping off thing. We paid 600 dollars for that cylinder then me and a friend who used to do it together. Now might be worth a lot or nothing ( I don’t know maybe I’ll have to pay to get rid of it 😂). The split system you show is nice I didn’t realize the evaporators were charged I always learn so much from you. I also learned about the 240v breaker you showed I never knew either that they had them for 240v . You are the best kind of teacher for the working man and diy person. I watch all your videos from start to finish. Oh I’m retired to 😂. Was a boiler operator for over 20 years. From 1979 to 2001 . From fire tube and water tube boiler plants only to co-gen and jet engine at the end of my career in that field. But retired from heavy construction laborers in 2020. So I appreciate your hard working hands but be careful with that sheet metal you always make me nervous when your pushing on it with bare hands. Remember if you get a severe cut it’s your hands that make your money and here to of course but every tin knocker has scars from slips. Have a great day and thanks again teacher young dude.

Sorry about that. My store has a mix of shippable videos and item lists and as of right now there is no way to separate them

WM, you are correct. And it specifically states so in the Mr.Cool install guide.

Hmmm I might flip it over. I’ll do some more research on that first. Thanks for the input

@@diyhvacguy you could work the excess into the large wall cavity and have it look super clean outside 👍

Can the line set be ran from the other side of the indoor unit? I’m replacing an LG unit that the line set is running out the left side when facing it, this video shows running it out the right side following the template , thanks

@@cesaraviat yes, it can. your connections will be on the inside instead of the outside though (at least on my unit). on mine I also had the option to move the drain line to the other side by swapping a rubber plug out and moving it to the spot where the drain line went by default

Mr. Cook sent me this unit in exchange for creating the video. They have great customer service from what I’ve read though

​@@diyhvacguy You need to disclose the fact they sent you the unit for free. At 7:34, you said you don't know if you got special treatment because you received a tool bag, wrenches, and hole saw bit. Obviously you did. Same goes for the bent fins. You said it's not worth sending it back. Really? It's hard to believe or trust what you say because you're not being honest. Don't be a shill and BS your viewers. People deserve to know they are basically watching an ad before they go and spend their money, regardless of whether Mr. Cool has great customer service or not.

They are precharged with refrigerant, so if anything happens a tiny bit of refrigerant gets released when the lineset is joined to the equipment. No problems thus far!!

The issues won't show for many years unless it's a newer propane based system in which case you risk fire. The old f gas one just has failure due to moisture later on. Also no pressure / vacuum test means you have no idea if it leaks or not. It's a good video but does miss a couple of what appear to be quite important things. Second one is the pipe spool needs to be horizontal not vertical due to oil in the system pooling in the lines. Ps I'm a DIYer too so this is just things I have found while researching if I have enough tools and info to do a DIY safely and to code.

Trutechtools.com 👍🏼

Yea I was surprised too.

Pioneer offers 10ft sections, but apparently it needs a minimum amount of lines fot the refrigerant according to my installation guide

Not on the DIY line sets. System is pre-vacuumed.

🤣

I believe the 18k kit is $1700

It’s dependent on the size but mine one requires a 20 amp. If you need help with sizing etc feel free to check out our Patreon membership at Patreon.com/diyhvacguy Cheers man

www.pickhvac.com/mini-split/diy-installation/power-requirements/ You can find those wire and breaker size requirements here

Yesir

Ad hoc Resizing would negate the $1300 premium levied for their famous DIY-friendly "completely pre-charged" feature for which they are purchased. I know there is a Florida company which sells affordable recharge kits. Some recommend every 5 years. One person routinely recharges his new units, noting an improvement in performance over the stock recharge.

Yea maybe 2 ft. Maybe a little longer. From the inside unit if I understood your question correctly

It’s not needed unless you did something wrong during the install or it isn’t cooling at some point after the install. Then I’d recommend having someone check it out.

Yes

I might have a video coming out with the air handler heat pump soon :) stay tuned!

I’ve replaced more mr. Cool heat pumps then installed. Heat pumps aren’t meant to be DYI. Mr. Cool is a joke of a brand, tbh.

Same with the 4/5 ton units. I think you are referring to the A-Coils. It's a little cheaper to buy the Central Ducted System over the Universal System if you are setting it up as an all heat pump system.

@@MrAlexmiele8910 Putting you out of business ha!

@@timcat1004 idk how that makes sense. People buy a mr cool unit. Then they pay me to take it out and put in a real unit…. I just don’t like seeing people waste money..

You need to get a breaker that is made for your panel so if it’s a square d it will be different then a General Electric panel. I found mine at Home Depot

Linus Tech Tips on youtube installed ceiling cassettes. Says difficult issue is achieving downward slope, water backs up and overfows, awkward to access to monitor, difficult to see in dark, tube comes loose. Potential ceiling damage. Talks about it at 21:29 in part 2 "This was MUCH harder than I expected... DIY Air Conditioning Pt 1"-installing outdoor unit kzfaq.info/get/bejne/qa1pY6qV17SplIE.html "For the first time in my life... I'm COOL! - DIY Air Conditioning Pt 2" -installing ceiling cassettes, (I've pre forwarded it to the place) kzfaq.info/get/bejne/i5OgjZSlxrybZok.htmlsi=MHGnHm9Ed6JHSAAH&t=1289

Yes each one needs to be separate with its own disconnect 👍🏼

@@diyhvacguy thanks 😊

Bingo, Using over sized conductors is only dangerous to the wallet, but feeding a 240 single phase load with 2 non bridged breakers is a serious no no, I doubt it passes code anywhere. need to do some musical chairs and free up a spot for a 2 pole breaker... Possibly by replacing all your existing 2 pole breakers with ones like he has and removing a couple of the single pole duplex jobs. In case anyone is wondering why this matters, in a condition where one leg trips due to a ground short both legs will be secured, also it helps insure during maintenance a homeowner or technician will get all the power off. there is a real possibility that a tech in a hurry is going to see that breaker near where they expect to see a double poll breaker for the ac and shut off your range before they get to poking around, or assume its a single 110 breaker.

@@gregdawson1909 My breaker panel is a Siemens and I have one of those breakers (a 30/40) for the dryer/range. The outer switches have a u shaped metal piece clipped on them so they are tied together. He probably can get a similar piece for his square D box. He has more trouble than that, passing code. In multiple locations he is using a white wire as a hot wire without wrapping it with black tape to indicate it is hot.

So far so good! They offer a great diy product

Yes I’ve learned this since doing this install. Thanks for the feedback!

Nope still working like a champ!! 🤘🏼