How to install Ductlessaire mini split

Save thousands by installing your own Mini Spilt heating and Air conditioner. I go through the complete install of a Ductlessaire 24k BTU
unit. Please note I am not a HVAC Pro and that some units require that a licensed pro is required to register for the warranty.
If you want to see what's included with the unit watch my unboxing video at • Ductlessaire 24k Mini ...
Note there are similar units by many companies that install similarly. Pioneer, Senville, Gree, Daiken, Cooper&Hunter, LG
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How to install Ductlessaire mini split | What's Next DIY
Product Links:
Ductlessaire DA2421-H2 mini split - amzn.to/3MytLTQ
Similar units available on Amazon:
Senville AURA - amzn.to/3z05fr9
True DIY Mr. Cool unit - amzn.to/3yyMSbA *Doesn't require running a Vacuum
Mini Split wall mount - amzn.to/3NyxphK
Vacuum pump w/gauge - amzn.to/3xs3TVi
Nylog sealant - amzn.to/3mtiLwx
Flaring Kit - amzn.to/3Np29ln
Milwaukee electrician pliers - amzn.to/39jEkwE
Milwaukee pipe cutter - amzn.to/3xr1hpo
Gear used to record the video:
NexiGo N940P webcam - amzn.to/3MN0GEM
DJI Pocket 2 Creator Combo - amzn.to/3LNpnRt
Action Camera, 4K 24MP Dual Screen - amzn.to/3KLK9zk
Samsung EVO SD card - amzn.to/3yCHky9
Nexigo Glow Light - amzn.to/3PnSzAw
excelimage Green Screen - amzn.to/3FMfHo2
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Thank You Everyone!

[@702goat]

Disconnecting the hoses before releasing the refrigerant introduces moisture back to the system pretty much your vacuum was lost you have to release refrigerant before you disconnect hose you have to have positive pressure so you don’t intrude moisture to system

[@whatsnextdiy]

Thanks for the tip, I'll pin this comment for others.

[@eliyyahsilva1282]

So I'm confused. Is he saying you did this or is he just offering tip. I just wanna make sure I understand fully so I don't screw my install up. lol

[@eliyyahsilva1282]

nvm. i understand now. means don't disconnect hoses after vacuuming out until after you release refrigerant

[@702goat]

@@eliyyahsilva1282 yes exactly after your done with vacuum close your low side gauge and turn off vacuum pump and don’t disconnect any hoses and then release all the refrigerant to lines with a Allen key and then once you release all refrigerant turn on the ac unit to cooling and then disconnect the hoses

[@whatsnextdiy]

@@eliyyahsilva1282 Yes that's what he meant. Good luck, be sure to let us know how it goes.

[@nelsonechevarria7009]

Thank you for sharintg your video with us.I hate to knit-pick but there were several things you could have and should have done.The first thing is that after you cut the copper tubing down to the proper length you neglected to ream the copper tubing ends and opened yourself up to have a serious problem.The problem you opened yourself up to by not reaming the copper tubing ends is that when copper pipe/copper tubing is cut the cutting process tends to leave a burr inside the copper pipe/copper tubing and therefore copper pipe/copper tubing must always be reamed after being cut to get rid of any burrs that result from cutting the copper pipe/copper tubing.The second thing that you did wrong is that you installed the high pressure copper tubing first instead of installing the low pressure copper tubing first.I pained me to watch you torquing the flaring nut on the low pressure tubing with how much stress you had to put on the high pressure tubing just to tighten the flaring nut on the low pressure tubing.If you had bothered to ream the copper tubing after you cut the copper tubing before you flared the copper tubing and you had first installed the low pressure copper line you would not have needed to use any type of teflon tape or thread sealant like you had to do in the above video.I'm 63 years old now and I remember when I was much younger I worked with certified contractors and licensed plumbers and I learned the hard way that copper pipes and copper tubing must always be reamed (deburred) after being cut to size.Even PVC pipe must be reamed after being cut because if not the chances of clogs increases from waste catching on the burrs left inside the PVC pipe cuts.If you don't believe me the next time you cut copper pipe/copper tubing stick the tip of your finger into the copper pipe/copper tubing that you just cut and twist the tip of your finger inside of the copper pipe/copper tubing and get back to me to let me know if you don't cut the tip of your finger from that because you can and you will cut the tip of your finger if you stick it in a copper pipe/copper tubing that you cut and neglected to ream (deburr).I may not be the smartest man alive but what I was taught I learned well and when I didn't pay attention and tried to take shortcuts I paid dearly.

[@EricRohlfs]

How are the flange connectors holding up. Looks like they were torqued pretty tight.

[@whatsnextdiy]

The unit has been performing well actually its doing better than the new Heat pump I had installed on my house. It might look worse due to having a hard time getting bends to line up perfectly.

[@adamstalilonis8787]

Will the unit be overcharged with refrigerant if we have to shorten the lineset? 🤔

[@whatsnextdiy]

No its fine to shorten the line set, according to their website its good for 10 to 50ft of line.

[@positiveenergybaby]

Damn, I want to give you a hug. Thanks for making a detailed video. This helping the wife and I out so much. God bless ya!

[@MrMbm906]

Good video, flip those channel locks around next time

[@biggeezy_1le98]

It’s 2 yrs later how is it holding up I am about to pick up that same model

[@whatsnextdiy]

Its been great, I run it when I have projects out in the shop. I've been running it the last few weeks as I've been building a outfeed table for ny table saw.

[@biggeezy_1le98]

@@whatsnextdiyOk cool that’s good and Nice video

[@whatsnextdiy]

@@biggeezy_1le98 Thank you

[@mkehl1]

Thank you for this video! I'm about to install mine in my shop and find this very helpful. The length of the video is no issue as you can fast forward at any time.

[@LawrenceBland]

Does every unit need its own condenser?

[@whatsnextdiy]

You can have multiple indoor units to one condenser. If you purchase a unit that can support it. Each indoor unit will have its own line set to the outdoor unit

[@TheRealReasons]

What were the plastic piece you put in the wall for the hoses and wire to pass through? I don't see them in the box with my unit and would like to get some for a cleaner install. Thanks

[@whatsnextdiy]

@@TheRealReasons I made them with my 3d printer. Its just a basic collar for looks/protection..

[@drod6310]

This video was extremely helpful thank you sir.

[@whatsnextdiy]

My pleasure happy it's helpful

[@dosvaskosfarms4643]

Thank you for the wiring idea! I used to consider myself an advanced DIY guy, but... the instructions with this system are much lacking.

[@bstephens4801]

Thanks for the video. FYI they make a double flare kit. It mushrooms the end and then you flare it making the connection double thickness. I would recommend doing that if you can get the tool. Less chance of cracking. You asked about that caulk you are using that is sticky. It is petroleum based and you can use a rag/finger and mineral spirits as a lubricant for spreading or cleaning up the excess. it will not harm the remaining material. Just note this must be done when applied. After is sets, tough stuff.

[@1842Dre]

How do you clear the CL code on the unit?

[@whatsnextdiy]

I'm not familiar with that code.

[@travispolson4615]

When I installed my outside unit bracket, I used lag bolts instead of the anchors they provided. I felt better using lag bolts with wood.

[@curtiskelly6724]

Did you need to run a separate power supply line to the head unit. The instructions are horrible from ductlessaire.

[@whatsnextdiy]

No just the line they supplied

[@davidwalker6574]

The installation manual states that the drain hole on opposite side of indoor unit (unused) must be plugged to avoid leakage. I dont see that. Did you plug the unused drain hole?

[@whatsnextdiy]

No, I did not need to do that. I believe the statement is there in case you use the other drain. I used the one that was hooked up from the factory.

[@mgweather]

Yea I’m in the middle of my install of this unit and I read about plugging the other unused hole too. I see where it needs to be plugged but I don’t have a plug included. I do however have the plug nozzle that goes outside under the unit … I put that on, although I can see how it’s not necessary

[@58gennaro]

Doing my Ductlessaire this week. Only thing that concerns me is kinking the lines on the unit.

[@whatsnextdiy]

Nice! Near the Head unit the spring type wrapping makes it pretty easy. Just take your time and try not to bend it too tight all at once. If you feel it give stop in your tracks. You could also pick up a tube bender if your overly worried. My unit works great so far.

[@Mel-oq5xb]

Super helpful video, thank you!

[@eliyyahsilva1282]

Dang, thanks for the video. I actually bought my ductless before this video was uploaded and was getting ready to do it but couldn't find a good video. This video gave me a little confidence. I'll give it a go this weekend hopefully.

[@whatsnextdiy]

Thanks I appreciate the feedback.

[@totallymediocre]

Hey, thank you for the video. Just installed mine with your video. How are your winters and summers? Do we need to wrap the insulated pipes that are outside? Hows the unit running these days? Thank you.

[@whatsnextdiy]

The unit is working well, although I haven't used it much this winter. I just wrapped my pipes with the tape that came with the unit. I'll use it more in summer as I have a couple projects to do once I finish my landscaping.

[@totallymediocre]

@@whatsnextdiy Right on, thank you for the response. Did you wrap the lines that are outside? Or is the insulation that it's encased in sufficient?

[@whatsnextdiy]

@@totallymediocre I didn't do anything beyond what came with the unit and has worked fine.

[@totallymediocre]

​@@whatsnextdiy Thank you sir. Everything is up and running *knock on wood*. Your video was amazingly helpful!

[@vichauth4630]

Best DIY video I have seen on mini splits

[@whatsnextdiy]

@@vichauth4630 Thanks so much, glad I could help!

[@joojoo2679]

🐒

[@eliclimaco326]

Thank you for the step by step

[@thepressedpig5397]

Im trying to get my wires in on the indoor unit and I cant get my wires to tighten down they keep coming out!

[@whatsnextdiy]

Make sure you use the correct size crimp caps. Larger ones are for AC side.

[@whatsnextdiy]

Also you need the correct crimper

[@whatsnextdiy]

amzn.to/3wIqu2c this is the crimper I used.

[@whatsnextdiy]

Guess that one is unavailible, but this one is similar amzn.to/3P7ooPy

[@PlayFarmer]

Thanks for the video, I installed mine today.

[@mgweather]

Thanks for doing this video. Very helpful. I’m installing mine now and you answered some of my questions and gave me confidence to keep going. Thx!

[@whatsnextdiy]

Awesome, thanks for the feedback.

[@davidwalker6574]

In your video, you call the green wire running from the 220V disconnect to the outdoor unit “ground. But, I think that would be called “neutral” (normally white) on a 220V 10/3 line, right. At that means the outdoor unit is not earth grounded?

[@whatsnextdiy]

I extended an existing 220 circuit that I wasn't using any longer, which if I remember correctly was two hot legs and ground. The neutral wasn't used.

[@Rayray_unicornplayz567]

wow this video took 2 hours.

[@whatsnextdiy]

Yes it is long for sure. I wanted to capture as much as possible on the install so people can skip ahead to find what they want to learn/see. I may break out parts in the future to shorter videos.

[@cb-gz1vl]

Just note that a lot of AC companies will not service or help you if you install your own. They won't service any equipment they did not install. I had to toss mine out. The company wasn't helpful and I could get no local person to service it.

[@whatsnextdiy]

That is a risk, some companies are like that and those I would avoid. I use a local HVAC pro that has a side business.

[@whatsnextdiy]

Thanks for watching everyone, this is a fairly long video. I contacted the manufacture and they sent me the drain I couldn't locate and said it was optional. Basically the drain is if you want to run the water away from your unit. They were easy to work with.

[@downtheroaddowntheroad357]

Thanks for the video. Just installed 2 of these in my shop and both working great so far.

[@whatsnextdiy]

Awesome, I'm glad it's helpful. I've been happy with mine.

[@donnanickell3629]

Your video was so helpful!! Got my 24k ductlessAire installed, vacuumed the lines, and working great! I’m pretty handy but this was my first mini split. Thank you!!

[@whatsnextdiy]

That's awesome, glad it helped. PS it was my first one too

[@victorchaviano1056]

Where can I get the USB to use the split over wifi? Thanks!

[@whatsnextdiy]

Mine came with the unit. You might check with the manufacturer to see. I'd imagine it's just a generic USB wifi adapter.

[@anthonym6843]

When the flare clicks its done dude

[@brinknutz]

Thanks a ton for this video. I installed the same unit last weekend. I bet it would have taken me 2-3+X as long without your video.

[@brinknutz]

The only major problem I had was not realizing my service disconnect was fused, and I didn't put fuses in. That took me hours to figure out.

[@whatsnextdiy]

Awesome, I'm glad it's helpful. 😁

[@davidwalker6574]

After the 15 min vac pump run, pressure goes back to zero in 2 seconds. I’ve confirmed with soap no leaks in lines or gage lines. Do I have a bad gage?

[@whatsnextdiy]

I would recheck all connections and fittings, along with my gauge setup.. When I did mine I had a hard time getting the vacuum line tight to unit, think I used thread tape eventually.

[@davidwalker6574]

May I ask, how did you know it was leaking at the Blue line adapter?

[@whatsnextdiy]

@@davidwalker6574 I could feel air while the vacuum was running

[@dghcnu07]

Did you have a drain joint you had to install to the bottom of the condenser?

[@whatsnextdiy]

Mine was missing, I contacted the manufacturer and they sent me one and told me it was optional. I didn't need mine as I didn't need to run the water away from the unit.

[@rayaguilar333]

You forgot to show more about the electrical installation…

[@whatsnextdiy]

I left most of the electrical out on purpose as I would recommend that you already have that skill if you would want to take on this as a DIY project. Plus, different units and sites have different electrical needs.

[@fireboltaz]

That water drain line (on the inside) has a dip in it. Is that your water trap?

[@whatsnextdiy]

No I straightened it out when I wrapped it. I believe I stated that's what I was going to do in the video.

[@scottythompson4667]

Hi! Would love info on how you ran the Electrical. Is that a standard 30-amp disconnect? Just ordered mine. I've done a lot of residential electrical, just never run a disconnect. Would love an explanation of size wire used and box type etc.. Thanks!

[@whatsnextdiy]

Actually, the one I used is rated at 60amp but it was what they had in stock at the store. It is just a standard non fused disconnect. The wiring size I used was based on a 20 amp breaker in the panel and the max load of the unit which is stated as 18amp. The wiring to the breaker is 12 gauge and I believe the whip from the disconnect to the unit was 10 gauge (again what was available at the store). The box I used for the feed to the disconnect was just a standard outdoor metal box. The biggest thing is to make sure your wire will handle the load of your circuit breaker and the load of the unit. The disconnect is merely there for safety while servicing the unit. Hope this helps.

[@scottythompson4667]

@@whatsnextdiy so, you just ran 12/2 to that disconnect from a 20amp breaker?

[@whatsnextdiy]

@@scottythompson4667 12/3 its a double pole breaker. Its 240v for the unit I have

[@ntme9]

Where's the hepa filter these come with?

[@whatsnextdiy]

There is a filter on the top of the inside unit, seems pretty thin to be a hepa filter but could be.

[@ntme9]

@@whatsnextdiy I ordered the 12000 btu 21 seer and the parts list and the features list says it comes with both washable thin filters and a replacement Hepa filter. I think they are around 20 bucks and looks like a green sheet/cloth/matt

[@sylviebarrientes2169]

Please make a video how to use the remote

[@andybonds4769]

The remote is horrible, but if you have wireless as an option, USE IT, the cell app is so much better.

[@brentbyas8357]

What size was the service port?

[@whatsnextdiy]

I don't recall but the adapters that came with the Vacuum pump listed in the description fit.

[@fireboltaz]

Your heavy breathing is quite distracting

[@whatsnextdiy]

Thanks for letting me know. Maybe next time I won't be fat, out of shape, or 🔥. But that's unlikely 😁