DIY Mini Split Install: Mr. Cool, Multi Zone System.
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- Опубликовано: 29 сен 2024
- mrcooldiy.com/. I install a multi-zone mini split system, that can heat, cool, and dehumidify.
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Forgot to mention, my second channel is Farmcraft102. This was a great addition to my shop. Installation was definitely easier than expected. My only critiques are that I wish the base was easier (maybe I should have looked into getting the wall bracket), and that I wish they sold a reasonably priced pre-filter for my dusty shop environment. Minor critiques, the base wasn't that bad, and I'll just build a pre-filter box. Have an awesome weekend everybody!
The thing about most multi split systems is they use inverter technology. Becsuse of this is the unit only uses the amount of cooling capacity that is necessary. Even tho it is a 2 ton unit if it only needs 1 ton to do the job the unit will effectively become a 1 ton unit by slowing the compressor using the inverter technology thereby using only 1 ton worth of electricity. One of the many advantages to a mini split system. It is like having a gas pedal, it throttles itself according to the needs of the area. Very cool. (no pun intended. Lol)
Thanks for the upload, as always! What the heck is up with like a 10% dislike in 30 minutes? you got some mad people at you or something for being too crafty and awesome?
What's your second channel called?
@@jcusak Yeah, I heard "second channel" and I'm over here searching, too.
@@thadkissick same, cant see link anywhere :D
ok its
FarmCraft102
"I don't always trowel concrete, but when I do, I wear Crocs and pajama pants." ~ Jon
LMAO
Is there a video so all of us can watch 😂😂
@@bombardier3qtrlbpsi 22:10 in the video.
My daughter was watching with me and said "Dad he works in Crocs too".
Thumbs up for this alone!
Great video, anyone could follow you and install their own unit. You’re a great teacher .
You keep us hanging on I saw that excavator 😄 . Great video thankyou god bless looking forward to the next one
Oh boy oh boy, another piece of heavy equipment coming!!!
In Europe we put rubber bushing under each leg of the AC condenser for vibrations of the compressor. (noise reduction)
Red Green says "Any tool can be the right tool"!
Yes, I'm glad you pored the slab. Nice Job. 👍 I believe Diesel Creek go a similar unit. What's your other channel called?
44:44 yeah you did
OSHA will hear about this
My brain did a flip over the lollygagging bit
Jon another great video, was wondering what the SERS effectiveness rating and what type of federal and local help does the diy person get for this.
I remember the outdoor shop build series... Like anything if you don't have proper storage solutions things get pretty cluttered and messy pretty quick...
John, I thaugt I heard you mention, that the hoses were vacumed. Why did you use soap to control about leaking of your connections? I think vacuum does not bubble on the outside.
45:13 in nys we have to have a positive disconnect between unit and wall penitration
How many times per month do you clean the filters? I imagine that in this area there is a lot of ‘ wood dust’ (I don’t know the English word😢)…
Will change your name to Abby ... Abby Normal.
Hind sight is 20/20 ... sometimes 20/10!
With a drill like that me thinks you've done a wee bit of electrical/plumbing.
Is that farmer temporary? If so ... OH BOY!
Oh that teaser at the end! Also, Dozer is getting big!
"If the women don't find you handsome, they should at least find you handy."
Red Green would love you for that comment!!
As long as they can find you....
A note for anyone subject to code compliance, or expecting to be in the near future - officially, you need a disconnect and outlet within a few feet of the outside unit. Generally people use conduit or romex through the wall into the back of the disconnect, and then an "appliance whip" from the disconnect into the compressor. Not a safety issue per se, I believe it's so that anyone servicing it can be confident that power is off.
Also, good call-out on testing for leaks in heat mode - the pressures overall are higher in that case, IIRC.
Yeah, seeing that cable penetrating a wall not into a box gave me a bit of a shudder. Even more when I realized the missing box would be the disconnect. Oh well.
Is the outlet supposed to be on the same circuit as the disconnect/compressor?
@@fakename287 officially no, so service equipment can still be used. I ran conduit for my install with both circuits inside.
The need for an outlet near the equipment is for service tools… in these modern times of battery based tools the outlet just really isn’t necessary. Even the vacuum pumps for pump downs run on batteries. However most codes will still require an outlet on s separate circuit.
Spot on @karlanke...the exposed cabe with no disconnect was not the way I expected Jon to go....after watching countless hours of FC101 and seeing Jon always go the extra mile, I was pretty surprised at this.
The hammer drill joke was good 😂
John. Most (all I've seen/installed as an hvac mechanic) of those split systems indoor units have cutouts for the lines to come out the side or bottom so they can be mounted to a wall without needing standoffs.
Wrap the white wire with red tape. 240 volt circuits should be red/black. Someone unfamiliar could confuse it with a 120 volt. I know, doesn’t make sense but I have seen it happen many times. 😊
I would caution you to pay very close attention to your condensate water lines running from the indoor units to the outside. They are the biggest cause of trouble with these units, from my experience.
The lines are small, and the ribbed texture collects water and encourages algae growth, clogging the lines.
Especially if the unit doesn't run consistently (like your wood shop), you should consider an inspection or cleaning for algae to be a regular maintenance item.
You can put an algae tablet in the unit to stop all that.
I’m a big fan of the mini-splits, I bought a different brand offered local to my state with a multizone setup combined with the old central hvac. My HVAC was not keeping the house cool during the summer months very well, but the cheapest price I was offered for replacement/repair was double the kit cost for mini-split. So I bought the kit and installed the ceiling cassette style in the ceiling of the living room, kitchen, and master bedroom myself over a week after work. That was 8 years ago that I installed those and the system still works perfectly. I did have to vacuum out the lines with my DIY kit, but was able to rent a a/c pump and gauge kit from auto parts store. I set the mini-split to my main temp temperature and the old HVAC to a few degrees above and it rarely ever comes on to aid the mini-split. I can’t remember the last time I heard the old hvac come on.
At this point, if you haven't put "Don't Worry, It's Only Temporary" on any of the stuff you sell, you're missing out!
Or, “It’s only temporary unless it works “ lol
I used to come for the seals. Now I'm all about the goats!
Master of the end-credit teaser scene... 👌 Jay Bates did some huge filter boxes on his minisplits a few years ago. Dozer is growing like a weed. Cane Corso or Mastif mix?
Anatolian shepherd.
“Alright. We’re done here. I need to find something else to work on now.” 😂 pay no attention to this foreshadowing lol. Excellent video as always!
If you wanna go down a black hole, try to find Mr Cool's manufacturing facility. 🤔😩
They don't have one, they market and sell systems made by Gree, Midea, etc... which, speaking of, I've seen Midea's facility and it's impressive. Compared to the lazy union plant that's been making the same old 60 year old stamped steel cubes with the bang-buzz-hum single speed motor driven, light-dimming victorian era low tech, low efficiency, low reliability American scrap iron, I love my Midea split systems.
You might consider putting the external electrical wire in conduit. The environment you live has a lot of critters that will think anything soft is food. Nice installation, it will make time in the shop much more enjoyable. KOKO!
Haha we used to say “there is nothing more permanent than a temporary fix “. All the best - good job!
Mini roll of electrical tape!!! Genius!! Thank you!!!
For the benefit of other viewers when drilling joists always use the middle third, not the top or bottom thirds as this zone carries less stress than the other two.
Having your own sawmill means you have the nicest looking form boards ever!
Don’t know what the humidity is like in your neck of the woods. The only problem I see with running 4 tons of air in that small space you could have what they call flash cooling. It’ll be cool, but leave the humidity behind something to look out for. Keep on. Keeping on.
An issue you may run into by running 4 tons of cooling in such a small space is humidity. You probably don't have a lot of humidity there, unlike here on the gulf coast, but if you cool it down too fast what you'll do is go from 10% humidity to like 80% very quickly because the system won't have time to suck out all the moisture. You might end up with mold growth.
This is an inverter mini-split AC, they don't really have this problem. In fact, they are very good at making room bone dry at low fan speeds.
OMG the excavator teaser at the end!!!!! John is the man
A white roof will reduce the heat inside building,and electricity consumption when cooling.
Also, vibrations,even limited, will moove the concrete pad over time,being on a gravel rock wich is not supported on its sides or underneath ,being only on the ground,and not in.
gravel will settle,and slide,the pad will tilt.
Nice work otherwise,i hope it will content you.I'm impatient to see the digger video.
Jon, you plans sound great but instead of repairing that broken upper AC unit to supplement the split mini, why not add 3 large ceiling fans to accelerate the movement of the HVAC from the split mini? You can use them to more efficiently spread the heat as well as it tends to rise and you do have a high ceiling in the wood shop. One more suggestion that could help keep your equipment from rusting might be to use the split mini most of the time in order to reduce humidity. You can have it set at a very moderate cooling temp like 78 and a low heating temp like 55. This should reduce your electric demand and keep useage within the ability of your solar to handle the constant demand.
Great suggestions. If he has the upstairs workshop enclosed, no open doorways, would be a great idea for humidity control. Even a separate dehumidifier might be an option.
Contractor wanted 18,000 dollars to do this same type of system in house ,yea screw that im looking into doing this instead , thanks for the information !
Nice job Jon. BTW, Freon is R-12. Those units don’t use R-12. Just saying “refrigerant” is more accurate 😉.
Not sure if anyone else mentioned it, but Jay Bates had a good video on making a pre-filter for his unit in his wood shop. Great video!
Mr. Cool - THAT'S HOW YOU SELL UNITS! This was one of Jon's best single videos so far. Sorry, my favorites are still the multi-part series... but what a great way to showcase the ease of your product's installation... and that trick with the pre-charged lines is AMAZING.
As long as you don’t have any issues and pay the $80 biannual pm package, you’ll be fine. You need a local dealer to process warranty parts. Good luck.
I've had my mr cool for over a year and I couldn't be more happy. I went with the 36000 btu system and was able to install it by myself over a couple of days.
I installed one of these in my old single level home as it was not plumbed for Central Air. I have nothing but positive things to say about it. I had the 18k btu unit for a home just over 900sq ft and for the 6 years I lived there it kept the house very comfortable all winter and summer. I worked from home the entire time and ran it basically 24/7 and my elec bills were always at or below the average for those in similarly sized homes around me. I would 100% buy one of these again if the circumstances warranted.
just wondering, do you use the split for all heating and cooling or do you still run a furnace and maybe a window ac? what is your average electric bill? Im in New England, NH, we have the highest electric rate in the us. would love to have solar farm.
@@adam03110
I'm not who you asked, but I have a smaller unit that I installed last year. I've seen my electric use cut in half if not 1/3. I'm in Alabama so the cooling is priority. I did use it for heating for most of the cold weather down in teens and close to 0° F some nights. This is cooling/ heating 12'x26.5'x9' cabin with minimal of R19 insulation.
My electric usage was less than 500 KW a month before now average maybe 200 KW. My next step is installing solar to unplug from power company.
Thanks for taking us along on this one. oh and masterful set up for the "next" project.
Sad to say, Mr Cool will not warranty MY purchase, WILL NOT WARRANTY!! I bought and installed a 24K unit, 2 years in, it still works as it should. At the same time, bought, installed, 6 months later a single 12K unit, so after 1 year and 2 months (14 months after installation 12K unit stopped working. I called Mr Cool, over 3 days, they answered only once, said they were too busy to deal (August of 2023), it was too d*** hot so i called a local company. Local company said they didn't have 410a freon, so for $350, I had freon in 2 days. A lineset fitting, sent by Mr. Cool had a tiny leak. Local company pressure checked, evacuated system, refilled with my freon. 8 months later, freon gone again, local company checked, decided leak is in the compressor (outside) unit. After many hours on the phone, Mr Cool AGREES! (yea). And for just $250 will honor, their "warranty". This was after about 2 weeks of back and forth. Now they won't answer emails OR phone calls, so 2 years in, on a 7 year (compressor) warranty, they, Mr. Cool, are doing NOTHING!
Subtlety and sarcasm are 2 of the reasons i watch this channel. also...the occasional Metal outtro is kinda cool🤘
I just did one of these last week, 24k, and 3 9k heads.
Im in NY north of the city. My friend was quoted 22k, and this is normal prices around here. His kit was 7 all in with an extra lineset and all the electric stuff.
My only gripe with the kit is that it needs more length options. I'd even be willing to wait for custom hoses and wires.
The 4 unit heads have a lot of coiled hose to deal with .
I moved to New Brunswick 🇨🇦 5 years ago, and the house I bought had an old wood/electric force air furnace. The government of NB has an energy program where they are going to replace my furnace with an air source heat pump that will connect with my duct work. Now, what to do with 2 cords of wood I had delivered? 🤔
I had one of these 4-5 ton Mrcool heat pumps. I had to replace it with well known brand after breaking down a bunch of times and getting zero support from the warranty department at Mrcool. First 4 months from new the indoor air handler had a major leak then 6 months later the compressor went out
As a Non-American, this is unfortunately a meaningless 54min Ad…😢
Never mind, some will find this helpful
Never knew I needed Norwegian goats until today.
The most exciting part of my work day is watching your videos!
Hammer drill… I love it.
You’re cooling problem upstairs. I wonder if it could be a problem with “heat compression“, that is where an attic space heats to the point where it progressively produces radiant heat through the ceiling and heats the space below. Improved convective ventilation, or forced ventilation could possibly relieve some of the excess heat. It’s no fun trying to read a tape measure with sweat running in your eyes.
Why does it always feel like these videos are never long enough?
Wouldn't it be advantageous to hang your coils up off the ground a couple feet to prevent varmint problems? Great job 😊
nice unit bro
but i'm here to watch you suffer and struggle with your mechanized farm equipment
These inverter type AC units are not switching on off as you described at 10:31, they can regulate their power. So you would have been fine installing an oversized one, once it reaches the target temp it gradually lowers its power. You have one outdoor unit for two indoor one. If only one is calling for heating/cooling then the outdoor unit won't run at max power either.
Oversizing will actually help with efficiency to a point - the larger heat exchange surfaces get you the same energy flux with smaller delta-Ts and thus let the system run at slightly lower pressures relative to a smaller unit. But at some point you run into the minimums that the inverters can efficiently operate, as well as limited turndown in mult-head systems. Overall you want to right-size it, but a bit over is totally fine.
Ok John you did a great job. So lets look at a few things that are the basics of heating cooling units no matter the system you are using. You have to have a disconnect at the outdoor unit. Code required. Your breaker location can't be seen from the unit. The next thing, the vertical loops in the line set at the outdoor units. They are oil traps and huge. The compressor pumps refrigerant as well it's oil. Your frig and freezer and house a/c do the same thing. You get a leak and the compressor keeps pumping but now doesn't have what it needs for oil return. Guess where the oil is. In those big loops. Locked up compressor with no oil. You willing to chance it. There is not a gallon of oil in the compressor. In Hvac world maybe less than 16 oz.
I forgot it was Friday until I saw John's video!
John.
Love the show and your low key style of delivery. After watching your AC project I thought you might get some flash rusting on your machines with that much cooling. I use a product called Dry Coat Rust Preventative. Just spray it on the steel surfaces and it dries fast to a clear coat. Stops rusting 100% , or as you say “ a good seal” .
JC
You should have a disconnect outside behind the condenser unit. Use sealtight between the condensor and the disconect to prevent rodents from shortening their teeth on the conductors.
Power cable, I would of mounted a 6x6 box to the exterior wall of shop.
Ran waterproof flex conduit with loop and proper box connectors. Small length of wire to connect.
Concrete base was the right call.
"I thought I had one bigger but I don't have one to fit that" Don't worry Jon, it happens to a lot of guys.
You are one of three RUclips’s that I watch that I check the thumbs up before I even start the video
Hammer drill ha ha ha lol
John. I absolutely love it ,”hammer drill “ lmao
OMG, that mini roll trick for tape is going to be a LIFE SAVER! Alright, that's hyperbole, but it's a really cool trick that I've never seen in my 45 years on earth.
Also useful with a pencil and teflon tape to get around threads that are close to a wall
The Nigerian Dwarf Goats are ao adorable Jon to cute 12:46 @FarmCraft101
Hey John, There's a broken bridge in Baltimore Harbor you could tackle!
That you Mr. Premature Troweler?🤣I am definitely laughing with you and not at you. Love your videos.
You will definitely like the mini split over the window units.
I've installed a three of these (one under the supervision of an HVAC tech and two myself).
You will want to keep an eye on the filter, generally you want to clean them every 30 days, more often in a shop. If it ever feels like it's not working as well as it did, it's probably the filter.
You will want to keep the condenser clean as well, I generally hose them off with just plain water ever spring. There are cleaning chemicals (for both indoor and outdoor) but I've heard it's best to avoid those unless it's absolutely necessary (things are really dirty).
The indoor unit on the mini split is a great place for mold to grow, you'll want to keep an eye on that. You can get inhibitor sprays and some units you can get a UV light (I've never tried one).
The line set isn't charged with refrigerant, it would have a vacuum pulled on them. When you install a traditional mini split you connect the line set purge and leak test with nitrogen and then pull a vacuum on it.
The best way to run these units (for efficiency) is to set the temp and just let them run. Granted in your downstairs shop you would not want to do this because you'd just be heating/cooling outside. Your best bet (for efficiency) in that case is to insulate the shop. Heat pumps don't do well in the "only turn it on when I need it scenario." In your upstairs shop (which is insulated?) I'd set the temp and let it run. You can use auto mode to go from heating/cooling as needed but I just switch that manually in my shop, for heating I set it at 68 and leave it be. For cooling, I set it at 72 and leave it. It's more efficient (for a heat pump) to get the space to a set temp and maintain that temp then try to take a space that's 80 and bring it down to 72. If I'm going to be gone for a bit I will bump the temps to 65 (heating) and 75 (cooling).
The coil of excess line set is the number one reason I don't like these units. Fine on a shop I suppose it's ok but it's generally makes for an ugly install (in my opinion). When I installed the two most recent units, my HVAC guy flaked out on my so I broke down and bought all the tools needed to do the install. It was ~$1,000 worth of tools but since it was a traditional unit I could trim the line set to just the right length. Plus I have to tools if I need to install another one, or do a repair.
Great video. It's always a good week when a FarmCraft video lands, love your practical hand-on approach. Appreciate that you stop and think things through (usually) before charging ahead and doing something. Your get-it-done approach is what Mat at Diesel Creek needs at the moment. He has a shop gantry crane that needs to be installed, and is dithering rather than getting on with it, he needs you to come and help him, and maybe that will be the spur to get it done!! Today was a particularly good day, you posted as did Bruce at DrainCleaningAustralia. His videos are fun if for no other reason than the sheer enthusiasm and energy he puts into them. Check them out, he always puts a smile on your face!! Look forward to your next post. PS. Second channel?
Farmcfrat102
Dozer didn’t hike his leg on your install, so you did great!
Nice job...very thorough and done properly. John, what's the second channel?❓
Farmcraft102.
heat pumps are more expensive to run and not very effective at heating
No bubbles, no troubles.
You're the third RUclipsr to install heat pumps. I have seen 🐿️
Pull the mower in vs backing in for more air flow
Thanks for another great video Jon. I am an all rounder like yourself and I enjoy learning from your posts. Some tips regarding concrete plinths. Tapping the formwork early with a hammer helps get rid of air bubbles and improves the finish off the form. Instead of gravel you could have used higher formwork placed directly on the ground with some blocks or bricks inside to reduce the concrete volume required. A day where you don't learn something is a day wasted IMO.
Like a right of passage. Every RUclips channel needs a Mr Cool commercial and another for those damn battery/inverter units. Glad to get this out of the way on this channel.
If you dont llike it dont watch it
I guess we could spend OUR hard earned money on jacked up four-wheel-drive diesel trucks to spew out black smoke all over you when you’re driving down the interstate.
I guess we could spend it on two ATVs to ride our obese guts around on and pull it around with the above diesel truck.
That teaser at the end was perfect!
The only drawback is trying to find somebody to work on it
I've installed many of these types of units, as a subcontractor, helping a friend of mine who is in fact a red seal certified hvac technician. I wouldn't have worried about going through the roof personally, to each their own though, so long as its level/plumb, it doesnt really matter.
I'm also a contractor, so everything is a hammer. Lol
Edit: ah. Pre purged lines, should have watched a bit further, we always cut them to length, to make the install clean, not a fan of coiling them up behind the unit, mainly for esthetic purposes. That's just me however
That's the corect way then vac out the sure line set before releasing refrigerant even if Mr cool says not too many people run into issues by not doing that mickey pipes just did a video on another rebadged gree mini split which is what the Mr cool mini splits are and someone did not have the linesets cut and reflared properly and it got kinks in it and gut green corosian on it or acid. And finally I recommend you still have a Profesional hvac tech run the linesets and do the vacaum process if you do not have the equipment to do it.
Hi !
Nice video - be aware that these unit CAN produce a lot of cendensed water and if you have low temps you'll get a frozen surfaces where the water drains out on the 'floor' - my SMALLER unit produces 10-12 liters running 24 hours !!!!!
I collect the water and uses it for different purposes.
Best
Keld in Denmark
Enjoyed the “aging wheels” style time-lapse.
Great job You obviously have numerous skill levels.
The Dream Collab, Farmcraft and Technology Connections talking about Heat Pumps!
49:28 - The mini electrical tape roll on the socket.... Brilliant. ty.
Hear in Georgia your install wouldn’t pass code because you don’t have an outside junction box. Other then that i love the mr cool system. You could have cut the lines and vacuum them before opening the system and still keep your Freon
Your work ethics and knowledge make EVERY project look easy
in 1980 when I built my house, I ordered a complete precharged 5 ton split unit from Sears. Not really a typical DIY, but doable with a little duct and electrical knowledge.
Splendid job John I installed a much smaller system many years ago and it is still working well I was quoted £1300 and so a unit was advertised @ £250 plus £20 for the Trunking for the line so you took the right decision for DIY job as I did.
I installed a mini split in my barn and looked at the Mr Cool DIY option. You pay a lot for the special pre charged lines. An Amazon bought vacuum pump was a little over $100. So I did with less expensive mini split. You need the vacuum to take the air out of the lines. The coolant is in the compressor and you just turn a valve after to release it into the line set. It’s been working for almost a year.
Jon, Thanks for the install and review video. Of course I would have made the same (probably more) mistakes, but you conquered the beast! That really is a nice system and (as you said) very well engineered. I’m thinking about getting one for my garage and would record it if Mr. Cool would like to help me out as I’m retired military and on a tight budget! Anyway, They really do seem to be nice units and well thought out. A neighbor of mine was asking what I would recommend for his garage and I told him to check out the Mr. Cool. He’s not very mecanically inclined, so I offered to help him if he does…haha. These Mr. Cool Units are another wonderful innovation that was invented and has becime popular during ny lifetime. Big Congratulations to them and to you Jon for getting one for your shops!
Great job. You are an expert in so many areas. One comment on the new air conditioner for the shop. Where you have the unit sitting out in your outside area, I would definitely protect the compressor with some sort of guard to protect it from getting bumped with moving vehicles like lawnmowers, and anything that gets moved around. Note: I notice you do bump into things occasionally. You have a super program. Keep it up.
Gary Yaley
Keep it up!
Thanks. Such a good example for younger people. John really enjoys doing this.
Hey John. This is Jason watching from Toronto. Long time viewer. Just wanted to say love the channel and the humor. Don't change a thing. Also just subscribed to your 2nd channel. Thanx again for the great content
I think you made the right call on the slab mounting base. I have seen some vibration issues with the wall brackets once the fans get some imbalance from dirt. The mass of the concrete acts like a damper to mitigate vibration.
I agree, the ones I’ve mounted on the wall has a lot of noise transfer through the wall to indoors.
John. Don’t get beating yourself up about how you mounted that main unit. You did a great Job. I knew an old couple who got paid a great deal of money getting one of these things installed, one time and they didn’t do any better than a few rough old house bricks as a base.
The guy who did the fitting didn’t rip them off either. Had one hell of a new Tesla though, all the same.