Mr Cool DIY 4th Gen 12000btu Mini Split Full Install

The Mr Cool DIY 4th Generation Mini Split is easy to install on your own. This model is the 12000 btu model designed to be used in a space up to 500 sq ft. This unit has pre charged lines so you do not need to have any special equipment to install the unit. This is the 120v unit so a single 20amp breaker is used for power.
Find this unit on Amazon here:
amzn.to/3RDGkBp
and at Lowes:
www.lowes.com/pd/MRCOOL-DIY-3...
More information from the manufacturer:
Energy Star certified 22 SEER, 11.5 HSPF
Easy DIY installation: pre-charged R-410A 25ft quick connect line doesn't require special tools, equipment, or training
Designed to efficiently heat and cool a single 500 Sq Ft room
SmartHVAC app: wifi control - compatible with amazon Alexa and Google assistant - you can control your DIY anywhere with your apple or android smart device and an Internet connection
Variable-speed DC inverter compressor technology cuts operating costs
Introducing the latest in home comfort technology, with the 4th generation MRCOOL DIY 12K BTU, 22 SEER ductless Heat pump system. This powerful single-zone system has the capability of heating and cooling an area up to 500 sq. Ft. It comes complete with a 12K condenser, 12K air handler, and a 25 ft. line set pre-charged with R-410A refrigerant. The line set also has quick connectors which require no special tools, equipment, or training to install. The MRCOOL DIY system also includes many features that make it stand out among its competitors. The first of which is its ability to achieve an outstanding 22 SEER efficiency rating allowing it to be Energy Star certified. This system has many operating modes to select from to suit the needs of the user, including heat, cool, dry (dehumidification), and sleep. It also has the follow Me function that adjusts the temperature of the room based on the temperature being read by the hand-held remote control. The DIY features the convenience of being able to operate its modes and functions with your smart phone by using the smart HVAC app.
SethCraft is a participant in the Amazon Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com

[@heididecker707]

You did an excellent job of showing everything and clearly explaining. I started my install today.

[@sethcraftworkshop]

I hope your install goes well. Thank you for watching..

[@sncruiser]

Vertical loops in the refrigerant lines will trap compressor oil. Oil will not return to the compressor. Compressor will fail for lack of lubrication. Replaced 3 DIY installs so far with less than a season of operation. Use shorter line sets.

[@mrbigstuffbsa]

Could you lay the loops horizontally?

[@sncruiser]

YES so oil can travel down hill towards compressor. @@mrbigstuffbsa

[@gt5193]

Would even just one loop cause that issue as well?

[@sncruiser]

@@gt5193 Yes. I wouldn't trust it. Oil could trap and slug the compressor with liquid.

[@brianclark803]

Yup because all of the coil outside is acting like a txv valve

[@salruiz8066]

I've been contemplating installing a mini split, replacing a swamp cooler setup that I have on an upper floor on my home. I have an HVAC system set up in my home, and I also have a zoned gas hot water boiler set up as well and a pellet stove on three levels. But my home doesn't have an open concept, so heating and cooling is usually irregular and not consistent. And it's wasteful heating and cooling areas that are not always occupied. Having minispits to control the environment to a particular area seems more cost effective than running the whole house HVAC or the boiler system. I'm looking to install an 18k btu dual split unit for my upstairs family room and downstairs weight room. I've watched a few installation videos on various sizes and brands of DIY minisplits. I've gotten a lot of tips and ideas from watching them. I enjoyed your video and your tutorial. Nice job..😎

[@d.lasher]

Just wanted to say Thanks for posting this video - used it to complete my own install, working like a charm. (Used plastic gutter as the outside molding, worked perfectly)

[@sethcraftworkshop]

Nice! Thank you for watching and the feedback. A plastic gutter cover is a great idea!

[@MystiqueOfWonder]

Thank you for posting this! VERY HELPFUL!!

[@sethcraftworkshop]

Happy to help. These are not too bad to install.

[@wisdomwisdom817]

You did an awesome job sir , thank you so much. You are a great teacher.

[@sethcraftworkshop]

Thank you. Very nice to have a mini split on these 85 degree summer days.

[@geraldfer]

Thank you... I'm comfortable with everything...I made a call to my local certified master electrician for the wiring part...which wasn't too expensive. So this will be done and then my shed will have HVAC...😊😊😊

[@silverprayingmantis]

Dude you did well! Great video shared with my neighbor looks like the way to go. Thanks for making the video.

[@sethcraftworkshop]

Thank you. This install went well. Makes an exterior office space comfortable in the cold and heat.

[@garyletendre6381]

That was hands down the best Mr Cool installation video I've seen. Thank you!

[@sethcraftworkshop]

Thank you. I was going for easy to follow. Nice to hear that it was helpful.

[@jllaine]

Minisplit install looks straight forward, I'd just be concerned about rain infiltration where the lines come through the wall. You'll have give us a follow up about how the lines were made tidy and sealed up for the weather. Thanks for sharing this.

[@sethcraftworkshop]

Ah yes spray foam insulation was put in that hole and silicone around the plastic sleeve.

[@fpafdc70]

Some mini splits comes pre charged, seems to be easy installation. Thanks!

[@TylerHVAC]

I want one so bad. Thank you for showing me.

[@sethcraftworkshop]

This unit installs quickly and has worked very well for several months. Thank you for watching.

[@acorenuche]

Detailed explanation Keep the good work going

[@sethcraftworkshop]

Thank you. This unit has worked well.

[@oshitomaha]

Great video man, thanks!

[@sethcraftworkshop]

Thanks for watching.

[@vincentmbewe1651]

Very good demonstration loved it

[@sethcraftworkshop]

Thank you for watching. happy to help.

[@JG-nk7ld]

Best video I've seen on step by step to install! Thank you!

[@sethcraftworkshop]

Thank you. These diy models install quickly without too much trouble.

[@gregcooper5203]

Nice job helpd me a lot thanks

[@sethcraftworkshop]

Nice! Happy to help.

[@timmoriarty133]

Great job. Would also like to see how all those wires/hoses were "tidied up". That would be useful

[@sethcraftworkshop]

True. I plan on installing another system soon and can make it look cleaner.

[@heididecker707]

I saw another video of someone who built something that looked like a wood pallet (only prettier) and put it behind the unit, and put the line set/hoses/wires behind the pallet. Looked quite nice.

[@irlmikeo7634]

I am in the process installing my 36k as we speak. On page 27 of my manual it absolutely states that the excess coils of lineset must be kept horizontal

[@sethcraftworkshop]

Thank you for that information. The homeowner did lay the extra pipes down and put a little decorative lattice around it.

[@emaglott]

Nice work!

[@sethcraftworkshop]

Thank you. It was a nice install.

[@David-fg7ko]

Excellent video Seth 👍.

[@sethcraftworkshop]

Thank you.

[@jjsworkshop1359]

Good presentation for the install, the only thing you need is an adjustable wrench or two.

[@sethcraftworkshop]

Yes sadly I did not bring those the day I installed. (This build was over an hour from my home)

[@timothysears6970]

Quick and efficient!

[@sethcraftworkshop]

Thank you. I am now a fan of mini splits.

[@crawlerx1818]

Does the wall mount require to be installed up above by the ceiling or can it be installed like a motel style cooler

[@rickwalltheoutlaw-je3ow]

Great video my man

[@sethcraftworkshop]

Thank you. The install is not too bad.

[@catsspat]

I am no new comer to Mr. Cool DIY, as I own 3. Here are some recommendations. It's good to raise the outdoor unit, even just an inch or two, to avoid junk piling up under and around the unit. They sell cheap set of rubber feet meant for just this. Of course, you can spend more and get a nice raised perch with a little roof, too. You can do this post-installation, because it's just an inch or so movement. Foam covering any lineset left out to the elements will degrade. At minimum, wrap them all with vinyl tape or something. It'd been better to pre-plan and put them in a protected space, but it's too late now. Yes, they say you can disconnect and reconnect once without losing too much refrigerant or causing new issues, but I wouldn't do that.

[@sethcraftworkshop]

Great tips. Thank you. My next install is a 2 zone unit. I will be sure to use the rubber spacer feet. This kit came with tape to put on the lines.

[@kevin9c1]

You definitely can disconnect and reconnect. You just have to shut the valves on the condenser. I didn't hear any escape (had to replace a condenser under warranty). The instructions were literally to disconnect and reconnect.

[@VincentPhamille]

Thank you!

[@sethcraftworkshop]

Thank you for watching.

[@alimabrahim1643]

thanks for the install some videos show to vacuum the lines is it necessary

[@sethcraftworkshop]

The DIY model of the Mr Cool has precharged lines that don't need a vacuum.

[@HeatherLewisOhLeven]

Any tips for finding your top plate or studs. I have tried using several stud finders, and they don't work very well. Even highly rated stud finders work poorly.

[@user-hd4lw8eu4o]

Nicely video thanks for the clear instructions. I did almost exactly what you did but for some reason my outside compressor is not kicking on with that i am not getting any cool air am i missing something?

[@sethcraftworkshop]

I am not sure why the outdoor unit would not be turning on. This system worked right away when the power was turned on.

[@robbie6625]

did you figure out the issue?

[@khmerohio]

Thanks 😊

[@anthonyimbesi511]

Good video but the connectors used for the wiring are for indoor use only! I believe you can shorten the electrical lines that come with the unit so you do not have all that excess wiring bunched up around the unit.

[@tabor2001]

Fantastic video. Super helpful!

[@sethcraftworkshop]

Great. I am happy to hear that this install was helpful.

[@raymundotoledo8019]

Me gustaría nos mostrarás una unidad para conectar varios split evaporador y algunas recomendaciones..shalom

[@carlosfinlay874]

Thanks

[@sethcraftworkshop]

Thank you for watching.

[@dwaynecooper3787]

Thanks for the video very helpful. How long did it for you to complete?

[@sethcraftworkshop]

Its hard to judge the time because I was filming. But it was all done in 4 hours with video. So It can be installed within 3 hours for sure.

[@kingofkleen1]

Looks good! But how does it do in 8' of snow? Do I need to build a little house for it with louvered vents?

[@sethcraftworkshop]

Not sure about heavy snow. This area only gets a few inches. Covering the unit would be fine I imagine.

[@snowy800123]

Awesome video. Only thing I'll change it I end up doing a diy is I'll have to hang mine off the side of my house. I live in Canada so it'd be buried in the winter if I don't

[@sethcraftworkshop]

Seems like many people mount them on the wall. That is a good option especially for high snow areas.

[@robbie6625]

​@@sethcraftworkshopit also has the added benefit (maybe, depending on where the compressor is located) of only needing 6"of rear clearance instead of 12" when it's wall mounted

[@AnnLippert1]

@@robbie6625 that's a good point. I am installing one that will be ground-installed. but if its attached to the outside wall and that only needs to have 6 inches of clearance why can't the ground installation be the same 6 inches? what is the difference? (I'm just curious if i can install my outside unit a bit closer to the house).

[@EnriquePerez-nv4cb]

Thanks, brother. Now is my turn. I'm going to follow your steps.

[@thomasmastrocinque7132]

Hi. Great Video. I have a small 1.5 car garage (~400 sq ft) I'd love to cool. Can you recommend a unit that is super-easy to install that runs on a 110 v AC outlet (instead of being hard-wired)? My budget is $1500.00 but I'd love to be closer to $1000.00 or less.

[@staudtj1]

Nice work! Was this install in a very cold or very hot location? Is the 10 x 12 shed uninsulated? I feel the 12K btu is too big for this size building. If location gets snow and freezing weather it would be advisable to have mounted outdoor unit above ground level because of condensate and possible snow blocking fan.

[@sethcraftworkshop]

This location does not get very hot or much snow. Summer might see 90 degree on the hottest day. As for cold the lowest temp is around 10 degrees. The 10x12 is fully insulated as a detached office.

[@staudtj1]

@@sethcraftworkshop Thanks for the reply. I installed the same unit in my 450 sq/ft insulated garage in Michigan. I don't run it all the time, just when the weather is bad and I need to work out there. The end user will be blown away how well it works and how quiet they are.

[@michaelmazzorana4513]

Hi Seth, great video. Am about to tackle a 36k two zone unit. You didn't extend precharged lines so not sure if you can answer this question. I am trying to center my outside unit to extend to two zones without being short and while trying to measure accurately, am trying to understand the true length. If the 25 ft lines are truly 25 feet, it appear I have a few more feet added from the indoor unit attached lines that come through the indoor/outdoor hole? So maybe 28 feet total possible with the 25 foot line set? Thanks in advance.

[@sethcraftworkshop]

That is a good question. One that I don't have an answer for. The indoor unit does have a few feet but I don't know if that means the other line is shorter or if that adds extra.

[@michaelmazzorana4513]

​@@sethcraftworkshopThanks for the reply. I just received the set. Will let you know so others can have the knowledge.

[@jonnywow2585]

Hello, thanks a lot for the video , I need desperate help. I purchased air handler and outdoor unit in 2 events even the models a matching my AC lines are different in terms of connector sizes , indoor unit has small like( 1/4 male and like 1/2 male connectors) and line and outdoor unit matching larger connectors like 3/4 or so , I cannot locate what size connectors they use except 3/8 and 5/8 but that probably the line diameter ? does anyone sells adapters ? My guess they change the line sizes in recent production?

[@amytsai2177]

Great video & very helpful! But I found you didn’t install an ac disconnect box. Does it mean it’s not needed? I just ordered a Mr. Cool mini split as same as yours. Thanks!

[@sethcraftworkshop]

Rhanks for watching! The main panel connected to the building has a breaker dedicated to this mini split. That should be sufficient to cut power if need be.

[@Kilianshaw]

​@SethCraft Workshop depending on state and county, some require an ac disconnect to be between the breaker And the sub breaker/ main breaker box.

[@timberlandfarms]

@@Kilianshaw The small sub panel that he installed the breaker in is considered a proper disconnect since it is within sight of the unit.

[@user-ey3nm7pl7l]

What kind of plug voltage do you plug into?

[@coldspring22]

Nice video! Only thing I like to comment on is that excess line set should be coiled horizontally to avoid oil pooling? At least that's what I heard from other DIY mini split videos.

[@sethcraftworkshop]

The coil is just so long. I can suggest that to the homeowner and see if he wants to bend that sideways. Too bad mr cool does not sell a shorter line kit.

[@shermand391]

They do sell a 16’ line but it can not be substituted since all units are factory packed with the 25’ line.

[@catsspat]

I've heard so many people say this, but haven't seen anyone running into problems with these Mini-Split units, so take it for what it is, I guess.

[@kevin9c1]

Actually they say the opposite. Coil vertically to avoid oil pooling. I don't quite understand but I guess the oil is suspended in the refrigerant and the horizontal coil makes it fall out of suspension or something...

[@robchronos]

According to the MrCool manual: "Keep excess refrigerant hose coiled. Wrap with protective tape and store behind the condenser in a horizontal position (flat with the ground)."

[@Shofstall92]

I'm about to order this exact mini split. I'm hiring an electrician to run 220 to my shop, but will it work on a 115? Or should I continue to have him install the 220 for this?

[@sethcraftworkshop]

This unit is 115v - 120v but you can install a 120v breaker in a 240v panel and that will work.

[@victorfuenzalida6634]

Hi there, Did you feed the 10 wire into a 1/2'' flexible conduit? I was trying to use 3/4" conduit but the cover on the outdoor unit accepts 1/2'' inch only unless a bigger hole is made which it seems kind a hard to make a clean whole since there is not pre made Knockouts. Any input on this? Thanks for the great video!

[@sethcraftworkshop]

Yes, I did press the romax cable into the half inch conduit. I recommend that you use 10awg thhn wire. This threaded wire is easier to flex into conduit.

[@matthewrichter9853]

I used a 3/4" liquid tight NM conduit and had the same trouble with the too small 1/2" hole int the cover. Work around I used was a 3/4" LB short aluminum conduit body. I put a, 3/4"-1/2" metal reducing bushing into the conduit body and attached that to the cover from the inside with a 1/2" metal conduit nipple.

[@landonwelch2692]

What wire do I use for a 5kW samsung mini split

[@automateguru]

my unit's lines and power is coming through a wall that enters basically a mud room/breezway. I then have to take a 90 degree turn and go through another wall to get them outside. A couple questions. Does the line have to remain lower than the air exchange? Can I run the coolant lines through a long sweep PVC elbow to protect them? Obviously when the lines are packed in the back of the air handler it is expected that we bend to the left to straighten them to get through the wall but can the go further to the left? Just how forgiving are these things?

[@sethcraftworkshop]

The reason the lines go down the full distance outside is so the drain line will pass water out. Otherwise it would pool up and could grow stuff In the line. As for the pvc sweep that should be fine. The lines are copper and can be bent a little. Just be very careful not to over bend and cause a leak.

[@rosewd2]

The outdoor breaker, was that a gfci breaker as the unit is outside ? Since you used #10 wire im assuming the breaker is a 30amp?

[@ghjytffjkk]

gfci is not required unless the equipment is 80 Amps or higher

[@sethcraftworkshop]

There is a gfci in the house. This mini split allows several breaker sizes. I forget what size was used here.

[@donsmith9081]

Unit determines the breaker size, not the wire.

[@modelamerican1850]

Is it recommended to use 10/2 over 12/2 wire by chance? Is it recommended per Mr. Cool installation instructions? Great video!

[@sethcraftworkshop]

12/2 awg can handle 20 amps. That is plenty to handle this mini split. 10/2awg is a bit overkill.

[@Shofstall92]

How long is that cord with the wires inside at 10:27 in? I’m about to install the same exact unit in my shop and the inside wall unit is on another wall than the outside unit. Probably about 10-15 feet away. I’m hoping it reaches.

[@sethcraftworkshop]

I don't remember the length but at least 15 feet. It was plenty long.

[@Shofstall92]

@@sethcraftworkshop Thank you for the quick response!

[@vinnygoombatts1458]

So even though it's not code I'm thinking a 12-gauge pigtail plug into the outlet would work?

[@sethcraftworkshop]

If you could go 10 awg I would. But if your wire from the outlet is only 12 awg than that will be fine. You will want to install a box to hold that pigtail. (I am no electrician)

[@Christy.1]

I have an older brick house. Is it possible to run the lines through the top of a window rather than drilling through the brick? And thank you for this easy to follow and understand video. I was hesitant with these with most needing to have some evac and charge the lines. Still hesitant on the electrical part, I hate messing with electricity even though I know it's easy. Plus I already have a central heat/ac unit set up. It went out few years ago, 2200. for the part, 4000. to replace.

[@automatedcomment]

Hire a pro. Your sound scared

[@saintnick]

Did you manage to run it through the window?

[@kingsleykronkk3925]

Dunning Kruger Effect video advice. The compressor often fails with a long vertical coil restricting oil getting to the compressor. Any gas pipe coil should be laid horizontal, but it's best to be cut short to match correct length and professionally flanged copper pipe ends and drench fittings with a spray bottle detergent mix for a better leak test for bubbles.

[@jlhunter2008]

Great video! I installed the same unit but the outdoor unit isn’t turning on. I checked the voltage and I’m getting 120V in the outdoor unit but the unit isn’t turning on, however the indoor unit is. Any thoughts?

[@harleyb.birdwhisperer]

Check your breakers. Is something off or tripped?

[@davidmaschak528]

Isn't it supposed to be 220 volts?

[@mdiaz9607gmail]

​@@davidmaschak528 The Mrcool 12k units are 120v.

[@Viewsandvibrations]

If you have multiple systems you may have the communication wires crossed. Like you might have the wire for connection a going to connection b and vice versa. Also could be low refrigerant charge so it’s just blowing fan i would imagine

[@Joedoeswhat]

You have to do this is every single room

[@JG-nk7ld]

Did the rubber pads come with the unit by chance?

[@sethcraftworkshop]

Yes they sure did.

[@Chris-be7wz]

Could you of used 12/2 instead of 10/2 wire? I am going to install one of these and i already have a roll of 12/2 from a previous project ...

[@jennytomes4391]

Yes, you can.

[@charlesjennifercourtney6870]

Hey man, nice work…could u have used 12g instead of the 10g from disconnect to the unit? Helping a friend install a Hessaire 12,000btu - 115v unit and having difficulty getting the 10g whip to fit into the unit, thanks

[@sethcraftworkshop]

Yes 12awg is rated at 20 amps. You will be fine with 12awg.

[@jennytomes4391]

Yes

[@craig162]

I see you didn't install an a/c disconnect box. I will install my system like you did under a breaker box. I guessing you don't need a disconnect since the breaker is just above it to kill the power when needed. I'm sure every state's codes are different. I'm in Florida. Thanks for any feedback. Craig

[@sethcraftworkshop]

For this install, we did not use a quick disconnect box. Just used the breaker as the disconnect. There's certainly nothing wrong with adding that quick disconnect. But it seemed a bit redundant in this situation.

[@Jake.Gentry]

What electric wire size does that 12k unit require? I’m thinking about getting the 12k or possibly the 18k unit if it only uses 12/2 wire

[@davidstewart1153]

The instructions say 12/2 is the "minimum" for a 115V 12K unit. Also they say you can use a 20A breaker, typically also implies 12 gauge wire is OK. I used 10 gauge because my wire run was like 40' from the panel, I had room and money for it, and overkill was worth the peace of mind.

[@Jake.Gentry]

@@davidstewart1153 nice! 12/2 should work then for my garage where the wire is no more than 20’

[@automateguru]

I'm installing this same unit but when I attached the air handler to the mounting plate I don't think one side locked in correctly. How the heck do you get it to let go to try again?

[@sethcraftworkshop]

That happened to us as well. Sadly I do not remember how we got the one side back off the wall.

[@Angel-mp6xu]

Do you know if it really exists a mrcool ac with a outlet plug if my house does not have a breaker thingy outside

[@sethcraftworkshop]

Technically you could place a plug on the end of the 120v power wire seen feeding this Mr cool. But I believe it's required to have an exterior breaker by code. Installing a small outdoor breaker box is not difficult.

[@dentalbusinessrep]

I read online a mini split is suppose to have a quick disconnect switch kit to power exterior condenser. Why didn’t you use one?

[@sethcraftworkshop]

The disconnect is 5 feet from the unit.

[@nubarzohrabian9830]

DOES EACH ROOM IN THE HOUSE NEEDS A SEPARATE SYSTEM; IF NOT HOW DO YOU CINNECT OTHER ROOMS TO A SINGLE UNIT?

[@sethcraftworkshop]

This is a single zone mini split. You can get multi zone. Theose have a single outdoor unit and multiple inside units.

[@thefilthelement]

Are there any negatives to the extra length of lines being coiled up?

[@sethcraftworkshop]

They can get in the way. Also more line to be effected by temperature.

[@ggoebel6203]

I’m pretty sure the Mr. cool 12 K uses 14 four wire which is much cheaper and easier to work with than the 10 gauge wire. The 10 gauge wire is overkill and not needed.

[@MrNormanChang]

Good Job 👍so this unit didn't need do Vacuum ? Thanks

[@sethcraftworkshop]

Correct the DIY version of the mini split does not need a vacuum.

[@MrNormanChang]

@@sethcraftworkshop thanks ✌

[@WhatIsKenDoing]

why did you use 10ga. for a 20 amp circuit? Also, you should be using THHN in that conduit.

[@sethcraftworkshop]

Good point about the THHN. I will be sure to use that in my next install. The manual gave awg sizes and so we went with 10awg.

[@treyt6765]

My question is I know they have a decent warranty how ever…. Is that warranty void if you do it yourself vs having a license contractor do it ? I’ve heard it’s in the small print.

[@sethcraftworkshop]

That is an interesting question. I did not read the fine print. They probably do get you with some things. Like if you wire the unit yourself vs having that done by an electrician.

[@inmyimage1081]

On the website for the diy unit the linked warranty does exclude mini-split systems not installed by a licensed hvac contractor but specifically and clearly states that it does not apply to the diy product line.

[@LA-rl1lu]

Isn't it a safety hazard to have a circuit breaker slot cover missing (where you removed the 2pole breaker and replaced with a single 20a breaker)?

[@sethcraftworkshop]

Probably. Those cover plates can be purchased to cover the hole.

[@larryeagleson3182]

Would the 12000 btu work with a 288ft sq tiny house with high cathedral ceiling?

[@sethcraftworkshop]

The 12000 would actually be too much for a small place like that. Or it would be very fast to heat and cool. The 9000 would be good too.

[@SuperTinsmith]

Mr. Cool states in the manual to lay the excess line sets down horizontally, not vertical , to avoid an oil trap.

[@sethcraftworkshop]

Thank you. I will keep that in mind as I install another unit in the future!

[@briardan9226]

Can this be wired directly to the main circuit breaker box or does it need to have a separate box that attaches to the main box?

[@sethcraftworkshop]

The mini split is supposed to have a disconnect close to the outdoor unit. That is why the separate box is there.

[@kevin_ramirez2529]

⁠@@sethcraftworkshopdo you have a video showing how to add an ac disconnect?

[@kyleadamsdrums]

nice job! I hate to say it though... this feels like... 50% DIY 50% should hire an electrician haha

[@sethcraftworkshop]

I'd have to agree right out of the box It was a little bit daunting but once I got into it It really wasn't that bad. Not really sure what would happen if a leak was found?

[@somebodysomething3451]

Most condensers come precharged... You still have to vacuum the evap and lines... My question is what about the air you introduced into the line when you made the connections??

[@sethcraftworkshop]

For this install I just followed the directions. It does not show any place that needs to be vacuumed. Mr. Cool asked to use clips from the video in ads so they also did not mention anything about pulling a vacuum.

[@somebodysomething3451]

@@sethcraftworkshop thanks...

[@AnnLippert1]

at 7:45 are there specific Torque specifications to tighten the connections? or just wing it? serious question :-)

[@sethcraftworkshop]

There are torque specs. I did not have a wrench for that so I just did the best I could. Has worked flawlessly for almost a year.

[@user-ok4pw9ow6z]

@@sethcraftworkshop Thanks I appreciate it. I'm about to install a Blueridge DIY and I'm just taking my time to do it right.

[@kurt357357]

Did you not have to purge the air out of the line set? Otherwise would there not be air introduced to the system?

[@sethcraftworkshop]

The DIY mr. cool lines are precharged and do not require a vacuum.

[@kurt357357]

Oh so the lines are sealed until they are tightened on the fittings? Then the line set opens up when screwed down?@@sethcraftworkshop

[@somebodysomething3451]

​@@kurt357357I have the same question?? Is it like when you pierce the top of a tube??

[@abelbertaud7580]

So assume a concrete slab is required? Also what if your house is made with brick, not wood?

[@sethcraftworkshop]

The instruction booklet indicates a concrete slab. All the how to that I've seen have also used a concrete slab. You can get masonry bits to go through a brick wall. It would be quite a challenge.

[@brianrice6995]

There's also an available wall mount bracket to keep it off the ground. Masonry wall will require a 2.5" -3" core drill for the wall penetration

[@doctorgeneral4239]

All of your excess coil needs to be placed horizontal. Everyone keeps showing how to install these units wrong. What is the point?

[@doctorgeneral4239]

Exactly!

[@robklaproth8144]

The wrench they include in the kit was missing from mine and Home Depot is WORTHLESS, they want me to return the whole unit after I've already installed all the indoor air handlers. Is this a standard wrench I can buy from Harbor Freight or Home Depot?

[@sethcraftworkshop]

I dont even remember a wrench being included with the unit I installed. OH do you mean the Allen Wrench? It is a standard Allen key. You can pick one of those up at most hardware stores. Many of them come in a kit with several sizes.

[@biggusbestus551]

That coil of refrigeration lines stay like that ? Were those lines too long or what ?

[@sethcraftworkshop]

The diy mr cool only has a set line length. It would be nice if they could offer a diy kit with other length options.

[@martinduffy3835]

So no good for a rental unit ??

[@brantthompson199]

Hi, just picked up my Mr. Cool from HD, brought it home and opened the box and found one of the blue caps on the line set laying in the bottom of the box, cannot get a hold of anybody from Mr. cool and don’t wanna go through the hassle of installing this whole unit and still have to call an HVAC guy to vacuum the lines. Any idea if this is a dealbreaker? Tks

[@sethcraftworkshop]

I'm not 100% sure, but I believe those caps are just a protector for the seal that's inside the line.

[@brantthompson199]

@@sethcraftworkshop thank you, Mr. Cool just called me back and told me the same thing so I’m going to proceed with install.

[@catrielmiami]

I’ve been watching several videos, and everyone says you need to ‘vacuum’ the ‘lines’??? But I’m confused; if the system says ‘pre charged’ isn’t it supposed to be installed without vacuuming?

[@sethcraftworkshop]

I'm guessing the people that leave those comments are unfamiliar with the new Mr. Cool pre Charged mini split. This unit is designed to install without vacuum.

[@reginarussell7219]

Help, my husband just installed this and electricity is working but the unit is not blowing cool air even though it’s set on 62 degrees. What could be wrong?

[@sethcraftworkshop]

I just followed the instructions and the system worked. I am not qualified to troubleshoot any refrigerant issues.

[@bobholmes5157]

great installation video but 20 amp circuit breaker is probably not to code should be 25 amps with #10 wire to panel. Did to review with an electrician?

[@sethcraftworkshop]

The 20 amp breaker was installed based on the recommended amperage rating in the Mr. Cool install guide. The install was not inspected by an electrician. It should not have to being a DIY model. (Although I can see the benefit of that)

[@miguelmcclelland5306]

Just curious. Other videos show a 240 volt circuit. Why was this only a 115volt?

[@toolhawk]

They sell 115v and 208v versions

[@SoulForgeHomestead]

My 12k btu unit says it needs 230V, so do I need a double pole breaker?

[@sethcraftworkshop]

Yes you will need a double to gat 240v off the main panel.

[@raymundotoledo8019]

No ablo inglés pero aprendí todo de memoria grasias

[@fpafdc70]

No hablo inglés, gracias. 😂

[@jungbae3]

Happen to have a box convenient

[@sethcraftworkshop]

The electrician had installed that before the video.

[@mega-hb4re]

Can I use a10 gauge extension cord and cut the ends to make it easier ??

[@sethcraftworkshop]

It would be better to use thhn stranded wire. You can buy that to length at a homestore or local hardware store.

[@mega-hb4re]

Thanks

[@jennytomes4391]

Not recommended

[@Brough1111]

What about the excess line coiled up.does that get cut off?

[@sethcraftworkshop]

This kit indicates that you are to leave the coil. Kind of annoying that there is so much extra. I noticed that MR. Cool now has line length options. Much needed to prevent such extra coil.

[@Brough1111]

@@sethcraftworkshop thank you.

[@jballs1118]

I thought you can used just a 20 amp switch. Why did you put a 240 amp outside ?

[@sethcraftworkshop]

There was some miscommunication between the homeowner and electrician.

[@superrando837]

With sidings this becomes little harder to do, isn’t it?

[@sethcraftworkshop]

This build had hardie board concrete siding. It was not easy but worked ok.

[@user-ir3lt7tp4b]

Does this AC unit need to be vacuumed or not? This is my question.

[@sethcraftworkshop]

The Mr. COOL diy mini split does not need to be vacuumed. It is ready to connect and use.

[@ggoebel6203]

The lines are pre-vacuumed. It’s plug-in play. It’s do it yourself.

[@kennymackie4518]

Wait wait, did you install the drain hose on botton of the outside units! You made this look so simple and it isn’t!

[@sethcraftworkshop]

This was my first install for a mini split. It honestly was not that bad. Mr. Cool makes the install straight forward.

[@SonicOrbStudios]

Idk about your local codes but what I've been told from NEC code is that you shouldn't run romex in conduit as it heats up. It's better to use individual conductors I'm sure the book meant 10 gauge stranded wire, and I'd crimp some spades on it

[@sethcraftworkshop]

Very interesting. The run is very short and will be in the shade most of the year. At 12 amps max this unit should not heat up much.

[@Hunter__14]

Why did u use 10 awg instead of 12 awg, from my understanding 10 awg is meant for 30 amps, none the less awesome video

[@johndehart8787]

I'm pretty sure that's a wet location so it either has to be UF or thhn. The price you paid for the nm cable you could have bought thhn and been safer and probably cheaper. Nice job, but one question is why the line set coiled up? Can't you order a shorter line set?

[@kkmullin]

@@Hunter__14 I have the same question. Will be building new construction with dedicated 20amp circuits for each unit. Not sure but I think I would need 12ga solid wire.

[@mcarroll598]

Yes, Romex is not rated for wet locations.

[@normbeaudoin3635]

What if you find a leak at the connection ?

[@sethcraftworkshop]

I also wondered that. My only thought is that it needs to be tightened more slightly. But I am not sure. The instructions did not give an answer.