Step-by-Step Guide: Retrofit Installation of Mitsubishi Ductless Mini Split with Concealed Line Sets

Want to upgrade your home's cooling and heating system without compromising on aesthetics? Look no further! In this comprehensive tutorial, we'll show you how to install a Mitsubishi ductless mini-split system with a unique twist - concealing the line sets within the wall cavity for a sleek, hidden retrofit. Say goodbye to unsightly tubing running along your walls! We will walk you through the entire installation process, sharing valuable tips and tricks to ensure a seamless integration of a mini-split system into your living space.
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#MitsubishiMiniSplit #HiddenRetrofit #HVACInstallation #HomeImprovementTips #hiddenlinesets #concealedlineset #lineset #ductlessminisplit #minisplit #ductless #hvac

[@1943L]

Nice to see a generous space between the outdoor unit and the wall.

[@miillersconstruction]

Yeah man, gotta have space to clean the unit, work on it, blow the leaves out from behind it. This SHOULD be common sense. I'm not an HVAC technician at all. Just simple logic tells you not to slam it up against the wall.

[@whpoche]

I really enjoyed this video. Such a nice installation without using a line set chase running up the outside of the house.

[@miillersconstruction]

Glad you enjoyed it! Thanks for tuning in!

[@richardbutch1617]

I installed two mini-splits in my mobile home. One in the bedroom an one in the living room. In both cases I ran the AC lines sets through the floors instead of going out the outside wall. I ran dedicated electric wiring to each unit so each mini-split was on it's own circuit. They have both been running great so far.

[@miillersconstruction]

Man That's great to hear. I'm glad they're working well for you. I just can't stand the look of a line set running down the side of a wall. It just looks cheap and DIY to me. I think you made a good decision man.

[@2chipped]

They really have these systems figured out. Helped a friend set 2 for his smallish 2 story home. The biggest pain is attaching linesets behind the cassette, they give you a 3x5 hole to make the connections. Fat fingers not apply lol. Unfortunately my friend's cheaper off-brand's units insulation wrap, is not uv stable in the deep south...it falls apart after about a year. Am sure Mitsubishi uses better materials. Open end torque wrench, and and the spin flare is not something a diy'er will have. We used 3 clicks of the elbow for torque specs ,or common sense. After working behind other people's shoddy work in remodals,it's always a pleasure to open up your own walls ...and see that craftsmanship is still rewarded years later! I give it two AA's !

[@miillersconstruction]

Thanks chip! Really appreciate it man. Your definitely right about the fat fingers, I have the same issues! Thanks for checking out the video buddy.

[@OwensandCompany]

So…I said “thumb screws” … but I meant “thumb caps” lol. 33:42

[@miillersconstruction]

@@OwensandCompany us common folk won't know the difference 😂

[@shellz5437]

everything was perfect im just worried about the condensing unit getting snow on and around it and not allowing the air to flow definitely recommend the diverstech mini split stand ms1201 to resolve that

[@paloha1]

what happens when you drill new shelves (or whatever else) and puncture the refrigerant lines buried in the wall?

[@miillersconstruction]

Your going to hang shelves from the drywall? Interesting.....

[@bradhaughton6698]

I had to ask is your garage and house built as a passive house design, and when you mention the name of that installation?

[@miillersconstruction]

No it's not a passive house. My energy bills are extremely low though, I'm comfortable in the home, and I actually have a chance to pay the home off in this lifetime. I don't understand the second part of your question.

[@bradhaughton6698]

@@miillersconstruction oh the second part was just about the insulation

[@miillersconstruction]

@@bradhaughton6698 what about the insulation would you like to know?

[@philipdamask2279]

What is the lineset cover wher it exits the structure?

[@miillersconstruction]

That cover is made by Mitsubishi and I purchased it from ecomfort.com

[@nwsvndr]

How do I find someone like Aaron? Did he charge you by the hour? The commercial bids on these mini-splits will quote the equipment price at about 1.5x the eComfort price, then double that amount for the total install. So if you can buy the equipment for $5000 from eComfort, the installed price will be $15,000. I'd happily pay a guy like Aaron $250 per hour, but how do I find him?

[@mylesm7947]

So when it takes a crap ,OWN IT

[@miillersconstruction]

Ok?

[@eroom2087]

I believe I would’ve went 18’000 btu, I hope it’s doing good

[@miillersconstruction]

It's doing very well, but I agree, I wish I had gone 18k. I tested the unit on the hottest day we had this year, real temperature 100 degrees, heat index over 120. Within 30 minutes the humidity was around the 50% mark. It removes the humidity incredibly fast. But temperature only dropped a few degrees. If the unit is left on for a few hours, it's perfect. But if I want to go out and work on something quickly in the garage, it's frustrating having to wait for it. I sized it properly so that it wouldn't short cycle, but in this circumstance I wish I had over sized it. Something I'm so against typically lol 😂

[@KyleDreier]

What size unit? Happy so far?

[@miillersconstruction]

12k Unit. Very happy so far. At first I was surprised at how long it took to cool the space. But after testing a few times in this brutal southern heat, its dropping the humidity in the space from the upper 70% range to low 40% in 30 minutes. That to me is impressive. I am very pleased. Running it today actually.

[@KyleDreier]

@@miillersconstruction Excellent. Thanks for the info and the comprehensive video. Will be doing similar unit here in our Nashville humidity. :)

[@justinrichard4190]

Thats what she said

[@Glupkomatun]

Miler legendo.

[@philipdamask2279]

Did I miss him applying a vacuum pump to evacuate the nitrogen and any moisture in the line?

[@miillersconstruction]

Looks like I forgot to add that part to the video. I filmed it. But I'm not sure why I didn't include it. We vacuumed the lines for over an hour.

[@curtiswaagner]

you need rubber feet for the outside unit for several reasons

[@thowedmexx]

Delete those wall outlets because those mini split boards don’t like voltage imbalances and they burn real fast. I learned that the hard way

[@davidm6395]

All that work and you left it sitting on the concrete floor to rust out.

[@miillersconstruction]

Yep. No rubber feet for me. It's not like I would EVER go back and install them when the order came in. That wouldn't even make sense. It's not possible that they were back ordered!

[@davidm6395]

@@miillersconstruction mines on a feet 6inch off the concrete to avoid the bottom rusting out.

[@miillersconstruction]

@@davidm6395 I'm happy for you

[@davidm6395]

@@miillersconstruction The best thing about your video is your ego. Have a nice day.

[@miillersconstruction]

@@davidm6395 no ego here. Just addressing the troll in the room. You can be the armchair quarterback in another league, move along.