How to Install a Ductless Mini-Split Air Conditioner

How to Install a Ductless Mini-Split Air Conditioner | This Old House

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10 жыл бұрын

This Old House plumbing and heating expert Richard Trethewey explains how to install a mini-split air conditioner. (See below for a shopping list and tools.)
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Richard traveled to Tampa, Florida to help a homeowner find a cooling solution for his garage. The homeowner used the garage as a workshop in the summer months, but said that it was too hot and humid in there to work comfortably. To solve the problem, Richard and local expert David Zimmerman installed a "mini-split" air conditioner. The system uses no ductwork. Instead, an air-handler unit is mounted inside on a wall, and the condenser unit is mounted outside.
Shopping List for How to Install a Mini-Split Air Conditioner:
- mini-split air conditioner [amzn.to/2vyimyj]
- ground pad [amzn.to/2Veahyb], for supporting condenser unit
- 1-inch-diameter PVC pipe and assorted fittings [amzn.to/2WkL6q7], used as condensate drain line
- PVC primer [amzn.to/2GQcbe7] and cement [amzn.to/2vxt6x3], used to join together PVC drain line 5. armor-sheathed electrical cable [amzn.to/2PKKGH1], provides line-voltage power to the air conditioner
- low-voltage wire [amzn.to/2LkaPOu], sends signal from air conditioner to condenser
Tools for How to Install a Mini-Split Air Conditioner:
- drill/driver [amzn.to/2UR4vxf]
- 1 _-inch hole saw [amzn.to/2IVdvjo], used to make hole for refrigerant lines
- level [amzn.to/2ZVAu3l], used to level pad that supports condenser unit
- drywall saw [amzn.to/2WjOQIz] or jigsaw [amzn.to/2PKAgar], used to cut hole in interior wall
- hammer [amzn.to/2ZTYvYy]
- pliers [amzn.to/2Vbozzj]
- wire strippers [amzn.to/2LkgVhP]
The "Mr. Slim" ductless mini-split air conditioner was manufactured by Mitsubishi Electric [metahvac.com/].
It was Installed by David Zimmerman, Zimmerman's Air Conditioning & Heating, Inc.
Additional assistance was provided by Ryan Hansen, electrician, Hansen Electric, Inc.
About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers-and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.
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How to Install a Ductless Mini-Split Air Conditioner | This Old House
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Пікірлер: 1 200

@outlawgaming2439 Жыл бұрын

I grew up watching This Old House. I used to watch it as a kid to pass the time, as a young teenager I found myself using knowledge and techniques from this show. As an adult, I now thoroughly enjoy watching these gentlemen repair or install just about anything. I hope this show is on forever and I intend to leave PBS in my will.

@Bangbangbigelow 2 жыл бұрын

Excellent walkthrough. The tools, time invested and know how demonstrated have made me confident enough to hire a professional

@TokyoCraftsman 7 жыл бұрын

I install these in Japan, have for a while. We don't test with the nitrogen, instead we make the connections and with the valves still closed on the compressor unit, we pull a vacuum with the vacuum pump, let it pump down for a while, and watch the gauges to see if it holds vacuum, it if does you are good to go, no need to lug around a nitrogen bottle and regulator. Nothing wrong with the nitrogen bottle pressure test, just a different way to do it. One more thing, once the lines are attached and you have pulled a vacuum in them, they are ready for the coolant. kind of one step less this way. These systems are great, really like them. Cheers!

@RogerCoville 26 күн бұрын

First off - I'm a huge TOH fan. I subscribe to the magazine and watch the PBS reruns too often. I was disappointed that they never even mentioned the 220 volt disconnect that just "appears" on the outside wall. Please keep looking for many other more complete system installs on youtube. The DIY guys go way deeper on all steps.

@davidburnham794 3 жыл бұрын

I helped our HVAC guy install one today. A more complicated configuration than this but still very straightforward and kind of fun.

@alecgaston3617 4 жыл бұрын

I’ve learned over the years , there’s this stuff called Nylog . It’s pretty much a liquid gasket that’s compatible with 410A and r22 . It comes in handy when making your flare connections and I will stand by it

@dutchman2205 6 жыл бұрын

I really love to watch the differences concerning installing this unit between the USA and here in Holland. We are not allowed to use the flare nuts. So we remove the flare connection from the inner unit, and braze with silver solder the copper pipes directly on the inner unit. The communication cable between inner and outer unit must be shielded. For the electrical supply, we must use covered cable (not the 3 seperate cores). The safety switch must be from PVC . Metal junction boxes or switches are not allowed. I like the concrete foundation where the outer units is mounted on. But because of laws here, we are not allowed to carry stuff more than 25 kilos (approx 50 pounds), so we mount the unit on a console on the wall, or (when installed on a roof) recycled plastic beams. Oh, BTW, we use a 300 mm (approx 1 foot) 60mm (2,5") hollow drill saw, to cut the hole from inside to outside in one move. Greets from the Netherlands (in Europe).

@vikashdutt124 4 жыл бұрын

Gives a very fair idea of how easily a split a/c can be installed, great job guys.

@jbenz1990 Жыл бұрын

Ductless split. Not split

@peppermeat8059 4 ай бұрын

the professionals make it look easy but it really isnt

@machfive916 6 жыл бұрын

One of the best ductless mini split installation videos on the net.

@RogerCoville 26 күн бұрын

First off - I'm a huge TOH fan. Subscribe to the magazine and watch reruns too often. I was disappointed that they never even mentioned the 220 volt disconnect that just "appears" on the outside wall. So I very much disagree that this is "one of the best" on the net - please keep looking for many other more complete system installs. The DIY guys go way deeper on all steps. so I'm voting down this comment.

@jokiejokes 11 ай бұрын

The design makes this AC a possible alternative to ductless DYI systems. It works great. The remote control could be more visual aid oriented like a backligh design. Is impossible to see the lcd at least for me. Easy install kzfaq.infoUgkx_hHgTlzH3uk31Fe2RVS3xEbXHGaN_z5Tation. Came on time . Great comfort around the house 5 🌟 again. Follow mfg instructions for care and all and this should be the only AC you need for those of is that don't live in new homes with central AC

@georgesenda1952 8 жыл бұрын

Great video ! I had no idea that there were ductless air conditioners. Thanks for posting this !

@WandereringFamily123 4 жыл бұрын

0:00 - Ooh, I'd love to do this for my garage! 0:30 - Yep, this looks doable, maybe next weekend? 2:00 - Hmm, this might be a big job ... 2:40 - Oh, I would have probably messed that up and crimped that line. 3:10 - "Flaring tool?" What is that? 4:40 - Testing for leaks with nitrogen? Who are they kidding? I can't do this! 5:30 - Yep, this is why you hire a professional to do this job. Not even remotely tempted to try this myself any more.

@musiclvr1able 4 жыл бұрын

I had the same.exact.thought...in the same exact sequence🤔

@D2DNYAC 4 жыл бұрын

Its actually easier than you think 🤔!

@mariocutz 4 жыл бұрын

To think all this took less than 8 minutes.... lmfao

@AnUnapologeticApologist 4 жыл бұрын

Testing for leaks is not complicated. -Hook your gauge hoses up to the access stubs of the service ports -hook your middle hose (the yellow hose) to a regulator on your nitrogen tank -make sure your gauge valves are closed, open up the nitrogen tank -adjust the regulator to about 300 psi -open your high and low side gauges slowly until the pressure on your gauges reads about 250 psi on high (red) and above 120psi or "retard" on your low gauge (blue) -check for leaks using soap bubbles at all connection points, try to see if you can hear any hissing as well -once you confirm no leaks, close your nitrogen tank, and unscrew the hoses from the manifold (just enough to purge nitrogen from system) After that you just reconnect your hoses tightly to the gauge, hook up your vacuum pump and evacuate to 500 microns (about an hour. 30 mins with a 3/8 vacuum hose and port) Think you can do it? I do refrigeration for a living but ductless systems are literally child's play. If you follow the proper procedure you can do it yourself.

@Dylan1094 3 жыл бұрын

You can get ones with pre charged line sets you wont have to do any of that

@bettyboop1524 3 жыл бұрын

After watching a couple of TOH videos about mini-split systems I now know why installation costs are so high. That is a lot of work putting in one of these systems and what it means to have qualified installers. Thank you.

@Dave-so7sf 3 жыл бұрын

Ductless split units are actually usually quick easy money. As long as your not placing the heads on inside walls. The tools however to complete this job are roughly $1200.00.

@chanellee9762 2 жыл бұрын

In India the installation cost is $20 lol

@lvlikeyV 2 жыл бұрын

@@Dave-so7sf Mr. Cool has a DIY kit with precharged line sets that don't require any of the fancy tools and can be installed by anyone.

@frizzby-x Жыл бұрын

lol what? Mini splits are very easy to install.

@dancooper6002 Жыл бұрын

No, they are high because you are getting screwed. An even moderately competent person could do this in a day.

@aaronsoto4622 2 жыл бұрын

This guy made that complete installation look soooo Easy.....hes probably installed like 100 of these.

@wmpetroff2307 Жыл бұрын

I was waiting for a time elapse temp verification. I wanted to see you guys cooled off. MR ZIMMERMAN ---->Excellent, thorough demonstration walk through. You are truly a PRO!

@billleonard7021 2 жыл бұрын

Nice video. Thanks. We have a mini-split in my home office space and we’re considering one for a fixed mobile home we have down south.

@jeanducheamps7697 3 жыл бұрын

Always a good thing to keep the car cool and comfy

@tylere.8436 Жыл бұрын

Not particularly useful in the Winter, unless it also heats and the garage is properly insulated.

@qaz3000 2 жыл бұрын

My dad wanted to get a small portable AC and I said that now adays they sell real split air conditioners for under 1000 bucks and that I would gladly come and install it with him. This video confirms what I imagined what the install would be like just looking at the unit. If we get the electricity ready in advance Im sure we can start after lunch and be ready by dinner time.

@anilramkishun9662 9 жыл бұрын

I enjoy working on small projects around my house.... Thanks to videos like these I can watch and get a better understanding.

@smithenstein79 8 жыл бұрын

Also copper pipe used in airconditioners is a soft copper. Much different/flexible to the copper that your water runs through. So it is quite easy to bend with your hands without kinking the line.

@zstidsen 8 жыл бұрын

Also, make sure to use 45 degree flare tool, that Ritchie should be okay. Use compressor POE oil on seat of flare before tightening, otherwise you may rip and burr the copper (especially on the quarter inch lines) Also you should torque the nuts to the specified ft/lb for the line set size for the same reason. This is where I see errors on 90% of installations I get calls to fix when people become frustrated and no longer want to deal with the original installer.

@charltonheston969 4 жыл бұрын

Mice gonna love that outside tunnel

@Fkidd702 4 жыл бұрын

I do hvac and that’s honestly a clean job. That cover thing for the lines and electrical is a good idea

@jbills0992 9 жыл бұрын

Thumbs up this unit saved our asses in Afghanistan..one day it was 108 outside turned this puppy all the way down and I found my camel pack in my room slushy. It also has a dry (dehumidifier) setting...in the winter it snowed in the morning sun evaporated snow lead to humidity in the morning. Perfect for garage storage. POG life

@damone70 5 жыл бұрын

A/C in the military... never heard of it.

@dam11232 5 жыл бұрын

@@damone70 We had it. I had window ac units installed in the wall.of my chu.

@damone70 5 жыл бұрын

@@dam11232 Things change I guess, I'm from Gulf War era.

@dam11232 5 жыл бұрын

@@damone70 Yeah. Were spoiled

@obsoleteprofessor2034 7 жыл бұрын

Did you know that a masonry bit doubles as a re-bar finder?

@johnanders8861 5 жыл бұрын

Yep, but then it quickly is not a masonry bit anymore...

@conqwiztadore2213 5 жыл бұрын

And arm breaker?

@andrewdarbyshire9108 5 жыл бұрын

Mine chew through rebar no problem.

@robertl.fallin7062 4 жыл бұрын

And today I learned every tool has a built-in in hammer, except a hammer.

@personalfunfest 4 жыл бұрын

😆 always! but on tv they magically vanish

@ChrisWai07 7 жыл бұрын

A true professional in work!

@tyzxcj34 8 жыл бұрын

Great video thanks for the upload guys.

@sbukosky 9 жыл бұрын

These guys are in oil burner country so are very familiar with flare connections. For those that are not, the installation manual says to put a little oil on the flare surfaces and has torque specifications. Special torque wrenches are sold at Mitsubishi distributors. Don't put the insulation over the connections until leak checked! I don't recall seeing the extremely important step of evacuation of the lineset and evaporator. That's how you get that nitrogen out otherwise it will be a big bubble of gas going through the system and will reduce cooling capacity and may cause other problems.

@stlwrkr68 9 жыл бұрын

I was noticing that they didn't put oil on the flare nuts as well. I believe they quickly said they pulled a vac, it would have been nice to see a micron gauge reading and have that pointed out as these systems are very reactive to any type of non condensables or impurities in the lines. Other than that great little video

@captinbeyond 3 жыл бұрын

I've been installing instruments with various tubing for over 40 years and no one ever uses flared fittings. Most if not all jobs they are not approved. If a piece of equipment comes in with flared fittings, we throw it away and replace it with compression fittings, usually Swagelok.

@slopadams5590 8 жыл бұрын

Great video ! Although if its taught me anything, it's get a pro to come and do the install - Looks worth the extra for the lack of hassle and worry.

@danm1319 3 жыл бұрын

Thank you for getting me more srv calls on fails!

@imaslowlerner 7 жыл бұрын

Those units are great. I'm in Egypt and had one installed last year, easy to install. So I said to myself that I'm going to get one when I return to the USA. Well the cost in Egypt with installation cost me about $450 US dollars. Just check out the price online in the USA and that's for the unit only, do it yourself. Keep your filter clean.

@filmadordecarros 6 жыл бұрын

Nice instalation procedure right there, clean-made and functional.

@joepconnor 8 жыл бұрын

Looks easy. Want to come over to my house next?

@Engineer9736 7 жыл бұрын

Just look at the airco installers section of the yellow pages and dial one of the numbers. Not so difficult. Or save some (or a lot of) money and DIY everything except the gas lines.

@KY_REDDYNESS Ай бұрын

This old house has a video for everything I need! 👍🏼

@shesho65 6 жыл бұрын

Useful and nice video I appreciate your work.

@ArcticAstrophysics 5 жыл бұрын

A $10 bottle of Nylog would really make me feel more confident in those compression fittings. Had the smallest leak in a custom a/c line in a compression fitting for my truck, never knew what Nylog was but once I found out I evacuated the system and put it on everything. No more leaks

@randallhamlet259 2 жыл бұрын

Expert installers have to check the seals before releasing the gas, which is what the nitrogen step was for. One can use the soap test or rent an ultrasound leak detector if they do it themselves, but it is illegal to do a DIY in the EU without a certificate.

@rhino79 7 жыл бұрын

Good to know I can do this myself in seven minutes!

@johnbarone8948 2 жыл бұрын

I love the way the service discount magically appears, with all the wiring done back to the electric panel, the magic of television I suppose. LOL

@cbcrudg 8 жыл бұрын

Very helpful. Thank you!

@tech29X 5 жыл бұрын

We're victims of home improvement shows: Oh TV, you make things look so easy. The electrical lines magically appeared right next to the outdoor unit, all the right tools are readily available at hand, all fittings, nuts, bolts fit perfectly together, and there are plenty of extra helping hands available to lift and level the parts. Then inspired by watching videos like this, the average Joe decides to take on a project, just running the electrical wiring and installing an extra circuit breaker is an adventure on its own. Rule of Thumb: For every one minute of video it will take one hour actual time. This project shown in a 7 minute video, will take 7 hours for average Joe, if they're lucky.

@alicecurtiss959 4 жыл бұрын

If you're an idiot and below average, yes.

@SportZone7780 4 жыл бұрын

The average Joe will be screaming to the parts as he goes because things don't fit like in the video.

@Dirtyboxer1 4 жыл бұрын

You could do this project yourself, but it's probably best to leave it to a professional. You're probably looking at a couple days work, one day to run the electrical and pour the pad for the condenser, and the second to hook everything up and test.

@DerrickVan 4 жыл бұрын

The install featured in the video isn't that hard... the panel was right next to the install so if you didnt want to run the wires in the wall you could just run a conduit outside the wall

@jamescollins6085 4 жыл бұрын

7 hours, that's awfully ambitious lol. I'd expect to double or triple that figure just for the concrete base that goes under the outside unit.

@zacharybishop6595 8 жыл бұрын

My grandpa has the same unit in his workshop!

@urofseron 4 жыл бұрын

Congrats?

@HVACShopTalk 10 жыл бұрын

Looks good, nice work guys.

@TheRealSmithFamily 7 жыл бұрын

I have a Mitsu heater/AC in my garage. LOVE IT!!!

@colincostine9775 4 жыл бұрын

So convenient that there happened to be an electrical box right where the outside unit was placed.

@user9b2 3 жыл бұрын

Colin Costine 👉 It is call planning, or thinking ahead, something you do not do apparently.🤦‍♂️

@jakegardiner6304 3 жыл бұрын

theyre the ones that put the box there.. it’s called a disconnect. it’s to power the outside unit Lol just one wire

@Jamplay703 5 жыл бұрын

I love when Richard comes running in after they actually do work

@sacramentoman228 4 жыл бұрын

When I was young I liked watching Bob villa now I'm older I watch these shows and I see it always require a contractor or trade professional to do the work this mini split in 2020 is a d.i.y install if you order the 12v or 110v unit online. I installed mine last year with my neighbor it took about 2 hrs everything comes in the kit. With the freon installed just like they did it. My unit cost $400 but I seen them go up as high as $1100 for the d.i.y mini split there great units with warranty.

@pcdubya 2 жыл бұрын

Good to see a man that knows his trade.

@StoneyRidgeFarmer 5 жыл бұрын

I love this old house!! Awesome guys! Stoney Ridge Farmer channel is your #1 fan!

@BeeBee-mh6yz 3 жыл бұрын

Stoney Ridge Farmer mjjjjfgggu

@meganjarvis7970 4 жыл бұрын

You guys make it look so easy, you need to come here and install in my house!🤓 ✌ lol

@TheYunakim1611 3 жыл бұрын

Awesome!!!! Thank you guys! God blessed you☺️

@javiervazquez9472 6 жыл бұрын

Your channel freakin rocks, man!!!

@carmenmillan7486 7 жыл бұрын

These units are cheap and inexpensive in Puerto Rico. Come in all different sizes, wireless, etc. Compared to regular a/c units that are either window mounted, swamp coolers (which are horrible) or your standard central a/c house units. Compared to the prices that they want to charge in Fresno, CA for a/c & inverter plus install. We are thinking of buying one here on the Island and taking it with us back to Cali, and doing a self install, for the pool house. They quoted me $2500 just for the install in Fresno, CA. :( It would be cheaper for me to hire a technician here in Puerto Rico and flying him out to Fresno for the install, LOL These types of units are great for Older Homes that don't have ducts installed and safer that a window install.

@philindeblanc 5 жыл бұрын

Yes, the HVAC industry is ripping a lot of people off. What a shame. Its industry run, as they dont want these units to be used. They are putting other companies that are already fat and overweight on a diet. lol. The cheapest I was quoted with no elec work was $750, me supplying the unit. If it was $300-500 maybe worth it. But tools($200-250) and a few hours of reading watching learning is worth doing, and installing it right. Now you have disinfo not only in news, but in industry, as I see hvac people posting wrong info. Very sad.

@starlondon7547 3 жыл бұрын

@@philindeblanc They don't want you to know how efficient and easy it is to do it yourself! I just installed one in my 12×24 shed and my friends are ordering them now for me to install. They are wonderful in every way. They tried to charge me 2000 to 4000 which made me go to work researching and wow what I found out. I can do the DISCONNECT box now. Don't doubt yourself, you can do this.

@philindeblanc 3 жыл бұрын

@@starlondon7547 I actually got it installed for $300 including vacumming the line and electrical for my 220v unit . Not bad. I would have to buy a pump and some tools that would be about $100 anyway.

@starlondon7547 3 жыл бұрын

@@philindeblanc You got a Blessing ! If you look long enough there's somebody with the skills.

@Phathom0 8 жыл бұрын

These are the typical AC units in Thailand. Most houses do not have central air there.

@asilver50 Жыл бұрын

It sure is nice having the breaker box right next to the unit. Mine is on the other side of the house.

@jayfix6126 7 жыл бұрын

Great job, I'm going to give this job a go

@locutz 8 жыл бұрын

nice work although i wouldn't bend copper with my hands , i'll use a bender for that ,good to see fell ow a/c techs on youtube man great work

@sammelton3569 8 жыл бұрын

In the full version of the episode he mentioned that there's an internal strain relief type device under the insulation to stop it from kinking.

@locutz 8 жыл бұрын

you'll be surprised copper is amazingly soft and will kink at moments notice ,i too went to school for this ,and i work in the field so i know a bit

@locutz 8 жыл бұрын

yeah that will help ,but i always say best have the tools to make life easier, work smart not hard

@bigclyde6351 8 жыл бұрын

There is no way He did not flatten that copper pipe

@Metalborn710 8 жыл бұрын

You can hand bend smaller line if you are careful.

@GodOfPopTarts 8 жыл бұрын

"Idiot-proof." Challenge accepted!

@zachmcewen4048 8 жыл бұрын

+bigchicago111 we love cold air in the summer!

@mabelholland1129 7 жыл бұрын

Seems that is very easy to do this by yourself, but I prefer to call a plumber :) #rfzstt

@kingkai7279 7 жыл бұрын

More POWER!!! *sponsored by Binford tools

@plumeater1 7 жыл бұрын

Damn it ain't idiot proof! Ma, call 'em 'bulances I got my all tide up.

@Infinity161 7 жыл бұрын

I twisted the red, black, and green wires together and put a wire nut on them. So..question. Is this thing supposed to be smoking like this?

@Mr.DatacentiCET 6 жыл бұрын

Got the same Air Conditioner used in the video now for 10 years. Despite paying 4K CAD, it runs like a cadilac!

@GoProGoalieUzi 2 жыл бұрын

Where in Canada?

@mahadev9659 6 жыл бұрын

Full install done in 7 min and 9 seconds:out of this world

@fredmartin126 2 ай бұрын

They skipped a lot of the steps, did you see them do both In let and outlet lines? NO did you see them charge refrigerant NO. And other steps.

@Paul_D. 4 жыл бұрын

Wow, the indoor unit wired itself up!

@IMayHaveNukes 3 жыл бұрын

it conects to the outdoor unit, witch is where it gets power.

@richardmeyer2007 4 жыл бұрын

These units have been in other parts of the world for 20-30 years!

@sjenkins88 3 жыл бұрын

Japan is way ahead of the US when it comes to ductless mini-split a/c’s. Four to five decades ahead of us to be uhm, exact.

@mathteacher2651 7 жыл бұрын

Its great to see guys work when they really know what they are doing, and when they care enough to do an excellent job!

@noahvega7589 3 жыл бұрын

ffddddd

@dannyperry164 6 жыл бұрын

Yeah that hole vacuum pump thing!! Good luck homeowners

@exshvezdickou 5 жыл бұрын

I hope its low voltage not high :) That twisted cable under ground terminal is nightmare :) The hand bend of refrigerant pipe is real pro skill.

@illestofdemall13 4 жыл бұрын

It is 240 VAC single phase. When they say "high voltage" they mean more than 12, 24, 48 Volts, etc.

@bensibree-paul7289 8 жыл бұрын

How about some cavity wall insulation?

@GinaMilani 7 жыл бұрын

You're very talented!!

@00.0O 4 жыл бұрын

That guys growing hella buds now

@MarineRacingTeam 8 жыл бұрын

I wish I could do this work myself and save me money.

@toddhutchens 8 жыл бұрын

You can. If you live in Oregon or Washington. The Heat Pump Store has DIY. www.theheatpumpstore.com

@molomosk123 7 жыл бұрын

said site references not a single DYI link

@gov2260 7 жыл бұрын

Check again... Top bar second row DIY with assistance.

@charliebecker4417 6 жыл бұрын

You going to buy a vacuum pump, nitrogen bottle, and regulator, a flaring tool power tools drill bits, that will really save you money

@jamescurr242 5 жыл бұрын

@@charliebecker4417 Plus I did not see anything about the electrical lines need and I think this Unit is 220VAC?

@williampowell1783 8 жыл бұрын

I would think thy would leak check fittings be for insulating them and taping up!

@RobertJoeBryantHVAC 8 жыл бұрын

+William Powell Most good quality fittings are really well engineered these days to minimize the chances of leaks. But yeah, I guess its still good practice to check anyway.

@ISLEaxe 8 жыл бұрын

They did a leak test with nitrogen gas at 300 psi held ok.

@dumbo800 7 жыл бұрын

Shouldn't is the operative word here.

@maxramsey5627 7 жыл бұрын

It is impossible to properly insulate the pipework when it's all connected up unless you cut the lagging on which looks shit!! Not to mention if your pressure test holds it's more effective than any leak spray especially on a larger system doing a pressure test is quicker and easier than leak spraying every connection

@davidcerino1145 6 жыл бұрын

William Powell You do. You don’t fully insulate until you’ve peak-tested the fittings. As a matter of fact, you are supposed to use a torque wrench to tighten the fittings just right. These systems work with R-410A refrigerant; the pressures can reach up to 400psi on the high side. You bet that will leak if you only hand tighten the fittings. More importantly, they need to vacuum test the system. Pressure test alone does not guarantee the system will work fine. Moisture must be removed and if the micron gauge does not hold less than 500 microns for at least two minutes, there might be a small leak.

@mousearebec 6 жыл бұрын

The fellow who did the job, knows what he is doing. Just gets it done. AND is using the proper rotary drill. Makes it a lot easier than hammer and chisel. I have had the same flaring tool he has since 1978. The ONLY tool I have never lost.

@ongta1265 4 жыл бұрын

What? He did not scan for object behind the wall and almost drill into the metal stud framing - that's why he drill second time from the outside. Lucky all the flexible pipes fit through the opening and not a round PVC tube or something. LOL

@emickkart25 10 жыл бұрын

I like the ductless mini split systems. I service commercial HVAC units for banks and I have been considering installing a 2 zone mini split on my 360sq ft cabin project. Thanks for the video.

@rajendrasingh977 8 жыл бұрын

One quick question, how did you know where to drill hole from outside that's perfectly aligned with the hole made inside? thanks

@agentjucey 8 жыл бұрын

the corer has a drill bit thats pointy, when he went through the first wall, he kept it level and kept on drilling with the bit and not the corer. Once hes outside, you put the bit in the hold and core again.

@agentjucey 8 жыл бұрын

use zip ties than tape

@Nick1814 7 жыл бұрын

You can buy 18" masonry drill bits that will go all the way through.

@Holydany 7 жыл бұрын

we use a long drill bit to make the center hole throuth all the wall then you use your hilti with a guide , once the Hole is start you remove the guide and you drill, you have to finish on the outside to make a good finish, you also have to dril in a angle on the bottom to protect from rain , sorry for my bad english lol

@Spykey981games 7 жыл бұрын

Ramas measure high and length Inside then do the same outside

@georgecrabtree2013 7 жыл бұрын

Even though this is a new installation your evaporator was open to the atmosphere, so when you do your final evacuation be sure to use a Micron Gauge and pull the evaporator down to 500 microns then let it set for 20 minutes to make sure you don't see an increase in pressure. Some flare connection leaks that don't show up under a nitrogen pressure test may show up under a vacuum test.

@theb0ywonder 7 жыл бұрын

George Crabtree evacuation is a necessary step isn't it? This video was helpful in showing how easy installation can be...but I was hoping to see this part that you mentioned.

@georgecrabtree2013 7 жыл бұрын

T T if you do a KZfaq search for evacuating a refrigeration or air conditioning system using a vacuum pump and micron gauge I'm sure there will be some good videos. It's also recommended to use a micron gauge in conjunction with your manifold gauges. Your basic dial gauges will only display your system vacuum down to 30 inches of Mercury where as a micron gauge will show you when you've hit 500 microns. When you do, valve off your gauges so that you are isolating the evaporator from the pump and the condensing unit. Let it set for half an hour making sure all of your connections are tight, even your gauge hoses, if in that time you see a loss of vacuum then vacuum it to 500 microns once more a let it set for half an hour if you see any loss of vacuum, any number higher than 500, you've got a leak to find. Removing all air and moisture from the evaporator before unvalving the condensing units pre-charge into the system Is important to the longevity of your system especially with the finicky refrigerants and hygroscopic (moisture loving) synthetic oils we are forced to use these days. Best of luck.

@thejnelson88 6 жыл бұрын

He's correct, you're the idiot here. Analog manifold gauges only go show to 29.9 inHG. For the correct install of the Mitsubishi Mini-split system requires vacuuming down to 300 microns per the manufacturer recommendations. Further more you are supposed to do a triple evacuation.He clearly had a vacuum pump hooked up but no digital manifold gauges or a micron gauge. I'm the source. A NATE certified technician that works for a Mitsubishi Diamond dealer.

@thejnelson88 6 жыл бұрын

You just failed this one. Vacuum is measured in inches of mercury or inHG. Microns is a more accurate measure of with in inHG. Obviously I understand how vacuums work but you can keep googling scrub. 500 microns is used to make sure all moister is removed from a system. All manufacturers require a system vacuumed down to 500 microns or lower. The lowest inHG that you can achieve is on brand new setups today is 29.916inHG or 0.00394inHA which is 100 microns. If I has vacuuming down to 20inHG thats not near enough time to pull out all the moisture in a system. Just because you pull down to that doesn't mean all the water is out of a system. 500 microns ensures that. I stand by my statement and the engineers will back me up. To the folks reading back home this is the difference between a college educated tech and the "handyman". If you want your system to last get the guy that knows what he is talking about not the guy that spends 2 min vacuuming your brand new unit down. Ill be honest I'm glad for hacks like you. Its the reason units fail so I have a job changing parts and correcting all your mistakes. www.engineeringtoolbox.com/vacuum-converter-d_460.html

@georgecrabtree2013 6 жыл бұрын

ike fun. "28 lbs. of vacuum"? Have you ever installed one of these or any H.V.A.C.R. equipment? Even if you meant 28 inches of mercury you'd still be wrong. Any system must be drawn down to at least 500 microns or you risk voiding your equipments warranty. Call a local installation company to verify.

@GordonBeats Жыл бұрын

I’m convinced! I need Dave Zimmerman in my life! Lol

@nathanpiper1346 17 сағат бұрын

just shows you how many different trades it takes to fit this, hoping to get 6 units fitted next year for around 6.6k, we'l see how that goes though

@kksd2 8 жыл бұрын

Great video! I always wondered what the extent of work was involved, installing this mini-split air conditioners. I had two installed in my condo in Thailand.

@TwinJalanugraha 7 жыл бұрын

kksd2 We stayed in CM a couple of years ago and the owner of the house we rented told us that it didn't cost that much to install his split unit. How much did it cost you?

@kksd2 7 жыл бұрын

I purchased two Daikin® min units (I believe I paid $570 for ea air conditioner units (Evaporator / Condenser / installation) There were other units that were cheaper (which also includes installation) I've had them for over 10 years

@webberfan1234 Жыл бұрын

@@kksd2How life in Thailand? Hear it’s great for relaxation.

@manbearpiggore6429 7 жыл бұрын

I would spray those flare nut connections with leak detector while the system is under pressure test, also the vacuum pump is more to remove moisture and air from the system not just the nitrogen.

@billhoward1918 6 жыл бұрын

Manbearpig Gore actually it is for the air and moisture in the lines not the nitrogen the nitrogen you just blow off into the air through your gauges it's an inert gas which is okay for the environment if you hook the vacuum pump up with the nitrogen still in lines the high pressure would blow the oil from your pump right out of the pumps exhaust port and you would have one heck of a mess on your hands .

@omarhammoud7223 9 жыл бұрын

Great Vid guys

@angelinef.3637 2 жыл бұрын

Thank you! I'm having mini-splits installed and now I'll know what to expect. Great informative video, appreciate it!

@user-ln7of9gs4s 2 жыл бұрын

Please let me know the pricing for the installs, what brand, and what type of house.

@ncooty 6 жыл бұрын

I like TOH, but many videos are less "How to do X," than "How to have X installed by someone else."

@karlhorvat9387 8 жыл бұрын

Phili878, I had sub-contracted 'professionals' install my unit. If I had known they were the three stooges, I would have done it myself! NOT HAPPY!

@tysonenergysolutions559 8 жыл бұрын

+Karl Horvat How much did it cost to have them install it??

@robbiebritt123 8 жыл бұрын

+Karl Horvat you actually need to be a licensed installer to do it. so no you couldn't have done it yourself anyway. And its harder then its looks, they skipped a lot of steps

@lookerthat 8 жыл бұрын

depends where you live if you have to be licensed.

@robbiebritt123 8 жыл бұрын

so your telling me anywhere in Australia you can install a circuit breaker into a switch board without being a licensed electrician or fridgy? ummm alright mate

@lookerthat 8 жыл бұрын

I don't live in Australia and didn't say that. Thanks for putting words in my mouth and then making fun of them.

@jonmacdonald5345 7 жыл бұрын

looks like a Perfect AC for a Small personal Grow set up!!

@mcfall420 7 жыл бұрын

We had these in every room in Japan, absolutely wonderful. It's about time we start seeing these in the states.

@MichaelWilliams-ps1vt 7 жыл бұрын

I was thinking the same thing, the house I rented 20 years ago in Tokyo had these in every room.

@tyson9419 2 ай бұрын

They’re all over Asia.

@Michael_Lederman 8 жыл бұрын

Air conditioning has sure gotten more simple.

@Michael_Lederman 8 жыл бұрын

Shena L Is this similar to your system if it is I think I could have installed it in a half day.

@Josh-px6xb 6 жыл бұрын

Not when you start messing with 16 seer - 25 seer units.. things are actually becoming more complicated

@billhoward1918 6 жыл бұрын

not really it's still the same if done correctly by the book The only difference is R22 used to be pump down to 700 microns and 410A is 500 microns. and of course maybe the flare fittings instead of brazing.

@muhammadayyan2015 5 жыл бұрын

I need job Whatapp no 923456363495

@MarvelDcImage 5 жыл бұрын

This market is ripe for a pre-packaged self install version of this to be made available.

@bigheadedmedia 5 жыл бұрын

they're called Mr. Cool units. Totally DIY so long as you're not mechanically challenged.

@MarvelDcImage 4 жыл бұрын

@@bigheadedmedia I am talking about as pre packages as window ACs. I see some on market now but are of poor quality.

@lattogaming4227 Жыл бұрын

You guys are fantastic love y’all mane

@anthonyc8162 3 жыл бұрын

Nice work gentlemen.

@HeySlowPokes 8 жыл бұрын

3:45 ... There's no oral mention of the masonry foundation for the outside unit.

@imcruisin88 8 жыл бұрын

It just sits on a plastic pad, level ground of course.

@bluesky6449 6 жыл бұрын

I pity the Fool that tries to copy the labor that this Old House does in general, especially this installation- this took 3 skilled/experienced workers, probably at least 1.5 hours. They had all the right stuff to deal with the installation. Can you imagine trying to do this without a great depth of experience in electrical/plumbing/or AC? Just the crimping tool alone would drive average Joe made. Certainly not feasible by a non-skilled worker. So, the benefit? Purely educational unless you have ALL OF THE ABOVE.

@bryanromero1 5 жыл бұрын

not being an idiot helps too though

@eddyoddrod 6 жыл бұрын

Brushing up on my new install! Love this channel.

@timreynolds6796 6 жыл бұрын

How to install Bonaire Durango 4500

@Peppermint1 8 жыл бұрын

I have a Goldstar/LG unit on my residential building apartment which is 5 years old. All apartments have the same Goldstar air conditioning model, with the condensing unit installed on the roof. All of them have corroded main board after 5 years. The board is placed in an un-insulated box located near the fan blade which blows humidity towards the box. $200 for the main board + labor.

@StanleyH01 9 жыл бұрын

Can this a do it yourself project? It seems so simple. Stanly

@mikez4132 5 жыл бұрын

Some brands are diy ready. They will indicate it in the description. Mr Cool makes DIY systems.

@mikez4132 5 жыл бұрын

@Fence Estimates haha no plans to install anytime soon...

@saxachewon8062 7 жыл бұрын

I think ductless is the way to go if you have less than 1500 square feet or live in a humid area. I still wouldn't feel comfortable installing it myself though...

@maxramsey5627 7 жыл бұрын

Paying for someone to install your ac unit will cost the same amount it would cost you just for the gauge manifold nitrogen and additional tools

@maxramsey5627 7 жыл бұрын

Carson Myers not to mention even a cheap vacuum pump will cost £400 not sure how much in the us

@mgkleym 6 жыл бұрын

Most auto part places will rent or loan you a vacuum pump and gauges. Its what I did when the ac compressor on my car went bad. You can also buy a vacuum pump for a 100 usd and a set of gauges for 60 from harbor freight. Edit: For any one who doesn't know most auto parts places have a loaner program of some sort for some of the more.. esoteric tools used in car repair so you don't have to buy a tool you will likely only use one.

@billhoward1918 6 жыл бұрын

Carson Myers Wise Choice . Good set of gauges 150 to $200 vacuum pump $400 and up flare tool 50 bucks and micron gauge hundred and fifty bucks... Job done correctly priceless

@andrewdarbyshire9108 5 жыл бұрын

biohazard 918 two different type of gauge sets. So 134a gauges won’t hook up to a mini split system.

@ElectronicsTechnoMusic 7 жыл бұрын

WooW Good Job ;) You Rock Man

@homeservices6754 5 жыл бұрын

Thanks for the imformative video

@metaltera86 4 жыл бұрын

“Pulled all of our nitrogen out with the vacuum”

@dannyf4995 9 жыл бұрын

A nice video. I just didn't like the electrical wire connection to the outdoor unit. Should use wire ends.

@rickstanley1182 9 жыл бұрын

Danny F Then you are trusting that you clamped the ends on well. So either way is really fine.

@rickstanley1182 9 жыл бұрын

Danny F Then you are trusting that you clamped the ends on well. So either way is really fine.

@dannyf4995 9 жыл бұрын

Rick Stanley I watched the video again. It is a perfect video and a perfect installation (the tube flaring, the routing etc), except the electrical connection. In my previous reply i missed the word SLEEVE :-). You should connect the electrical cable using end sleeves. Thanks.

@albowrx 9 жыл бұрын

Danny F I found more for you: -Copper piping flares need to be done with an eccentric flare tool and that is not an eccentric flare tool. -Flare nuts needs to be tightened using a torque wrench. I decided to use a Snap On electronic torque wrench with crowfoot heads. Also have a Yellow Jacket but prefer the Snap-on as it is electronic and it also vibrates and you can actually see the progress as it torques up in numbers. Use Nylog on all the nuts to avoid friction while tightening. Friction will actually ruin a flare crown, and you need to oil it to prevent it. - Flares nuts I usually cut off and braze using nitrogen purge. - 350psi is pretty low to test these systems with. 500 to 550 PSI is more like it. - The contractor said that he pulled out the nitrogen with the vacuum pump. Say what???! What a sure way to kill a vacuum pump?! Hopefully he meant to say that he let it all out freely, and listened to it by ear, so he doesn't introduce any air into the pipe system. Either way, that's what the vacuum is for, so even if air goes inside it would be removed by the pump. Combine the pump with core removal tools, vacuum gauge and vacuum hoses and he is all set. Not a prime example for a contractor.

@madfran6 9 жыл бұрын

Danny F I go through that everyday at work! I have a itch for naked connections.

@jimrylander9143 4 жыл бұрын

Very clean & professional. A couple things to consider. Put an elbow & a small piece of PVC on the condensation drain line. In addition, the metal enclosure is going to get rusted over the years , because of the sprinklers. I would install in an area free of sprinklers. Just a thought

@lyem654 4 жыл бұрын

clean and professional? He used no shut off valve between unit and the pump, and no triple vacuum with N2 gas required by Mitsu