How to Install a Wall-Mounted Mini-Split | Ask This Old House
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- Опубликовано: 7 июн 2024
- In this video, plumbing and heating expert, Richard Trethewey explains the purpose of a mini split ductless air conditioner and the process of getting one installed.
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How Does a Mini Split Work?
It’s simple physics-heat will always transfer to cold. Using something called an inverter, the mini split is capable of capturing heat through a cold line of refrigerant and moving it to the desired location.
In the summer, the heat is extracted from the air in the house and dumped outside, making it cold. In the winter, heat is scavenged from the outside and pushed back into the house. This creates heating and cooling year-round.
Because there are no ducts to retrofit, the system is simple for a pro to install. And it provides excellent dehumidification, quiet operation, and great efficiency. Need to adjust the temperature or turn the unit off? Just use the remote control.
How Much Space Can a Mini Split Cool?
A single air handler can heat or cool up to 1,000 square feet, depending on the climate and system size. (In heating mode, it functions down to minus 13 degrees F, not a problem where you live.)
For larger spaces, up to four independently controlled indoor units can connect to one condenser, for the ultimate in zoned comfort.
Time: 4-6 hours
Cost: $2,000 - $15,000
Skill Level: Professional
Where to find it?
Richard installed a 12,000 BTU SEER Ductless Mini Split Heat Pump System [amzn.to/2NzrgYz], which is manufactured by LG (lghvac.com/home).
Installing a mini split is an involved process, so Richard recruited the help of Boston Standard Plumbing for the installation (www.bostonstandardplumbing.com/).
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How to Install a Wall-Mounted Mini-Split | Ask This Old House
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I am the Electrician on this job. Oddly enough my ladder got more air time than I did. At least my work is tight.
Your ladder looks great! It has a future in Hollywood. 😆
Odd that they decided not to show any electrical work. It just magically gets done with hardly a mention.
Hard to find a well planned job like this, I've searched for some time to find a comprehensive solution like this. An electrical outlet and surge protection just for good measure. Please consider sharing insights on this. What products are used? Seems like 6-8 awg running to disconnect from panel with 12-14 awg to outlet and 8-10awg to split unit?
On second thought, isn't it common (and at least some codes) to run separate circuits for anything 30AMP or more? So likely ran two dedicates circuits from panel?
LOL. Ah, the pain of production. :D
I just finished renovating my house. I got 3 quotes from hvac contractors to install these mini splits. I was in shock by the price. For a 3 zone air handler hooked up to 1 condenser with a very easy run [less than 20ft] per line set, I was quoted up to 16K! The lowest proposal was 11,800. That was also with all of the walls open.My advice to anyone wanting these is do a lot of homework on installation and just buy the unit yourself. Doing so saved me at least 7-10k
I'd imagine that many people who get these put them in themselves as a cost-saving step. There are lots of videos on YT to help people along.
@@4seeableTV Agreed, luckily I had some help from a steamfitter that's currently on my jobsite
Lol yup I see it literally on a weekly basis then I get a call 2 yrs down the line for refrigerant leaks and bad units due to improper evacuation.
@@frankgall6 could not agree more. I know someone who installed a MR. Cool on his own to save money. Found 35’ of pipe coiled behind condenser blocking air flow let alone the oil trap the coil made. Then he also installed a three zone where the saturated vapor line blew out of the flare nut releasing 7 lbs of R-410 into his yard and compressor oil all over his siding.
MR COOL...DIY systems precharged 3-Zone under $3k. iwae.com/shop/heating-air-conditioning/full-systems/ductless-split-systems/?manufacturer=173&msclkid=411148d5a33a15b6e00e28f3524c29b6&HA%20%7C%20Ductless%20Split%20Systems%20-%20Brands&MrCool%20Ductless%20Heat%20Pumps
Perfect timing!!! I have finally takes my mother into getting one ☝️
Had them when I lived in Hawaii. They were great!
Nice video. Thank you. Think I am going to have to do one of these in my house due to rodent contamination in the forced air unit and crawl space.
I love my mini splits. Added one for the master bedroom, primarily for cooling.
I also converted a three seasons porch into a full time office, and I am using a Diakin min split for heating and cooling, year round in Wisconsin.
What did 1 unit cost you?
How much did your electric bill increase with the install of mini splits?
@@michaelkaylor4779 Not nearly as much as other ways
Also using Daikin in Australia. The mini-splits are very economical and the night mode fan is almost silent
@@jcshort31 My neighbor had his garage converted to a gym, and the install was $2300 labor and equipment.
These things are crazy efficient. If you have been running a bunch of window units all summer you will be shocked at how much your electric bill goes down when you have these installed. You can also get bigger ones that flush mount into the ceiling for larger spaces. The only rub is that when you use them in winter they do still start losing their heating efficiency/effectiveness when the temp drops below freezing. You can get ones that are specially designed to work better in cold weather, but for very cold climates you are still likely going to want some form of back-up heat.
Living in the hot, humid Southeast, it's ability to cool efficiently is my priority. The biggest problem is sizing any unit. What is recommended is a joke. You either almost double the recommended size or it can't overcome the heat when you need it the most. I learned that the hard way, TOO MANY TIMES.
@@allenh7835 Correct and if you go too big it will overcool and you'll end up with high humidity. And they never flash the exterior correctly so outside air comes pouring right on in.
I can’t wait to get one installed in my bedroom! I’m so tired of burning up on the 2nd floor. Thanks for this video, I appreciate all the info. ☺️
I know your pain I have to convince my landlord of Almost 12 years I need one badly
@@taniamarie2486 Well if I were you I’d go by the old adage of “It is easier to beg forgiveness than to seek permission.”😉 On a serious note, though, nobody should have to suffer and be uncomfortable in a home that they’re paying for. I don’t understand why your landlord would have an issue, it’s the better option. I hope they come to their senses soon. I live in NC and it’s already starting to feel like summer outside. 🥵
@@taniamarie2486 The law requires cooling if you have to call 311
@@taniamarie2486 you can't use a window unit?
Super informative. Thanks!
It's the way to go for sure. Huge comfort and energy savings. 👏🏼
truly professional
I installed my split myself and called a pro to launch it properly. Yesterday was the first truly hot day since having it. What a pleasure. Outside 92, inside 76. First airconditioning I have needed in 25 years just to sleep.
Sounds like it's not charged properly you should be 30° from ambient air
@@colbraddock9913 Most people don't want it 62 degrees in their house. 76 is plenty comfortable for most of us.
@@mph7282 It flew right over you.
@@colbraddock9913 perhaps. You have a 30 degree drop from ambient in the air coming out of the unit, but that doesn’t mean you have to set your thermostat at 30 degrees below ambient. What did I miss?
i had these in my rooms in my apartment while i lived in japan and i loved them. i'm now back in the States and have just the normal 1 central AC for my whole townhouse. it works fine except for my 1 computer room on the third floor. rest of the third floor is pretty fine, it's just the computer room with my PC pumping out heat combined with the fact that heat rises.
thinking about adding a small one of these to that room as I spend a lot of time in there. they really are great
Richard, you're the best! You explain things so well.
He really is the best!
he gives horrible hvac advice
@@zack9912000 not true
@@kriskobylarz7735 'fraid he's right.
@@joecephus352 explain
Good job...am doing this kind of installation my self since 2008
that basement was amazing
Great Video
Really a great video!
I live and are the owners of a 2 family house in NY that uses regular window A/C for the summer and brand new Pearless Steam Boiler for system radiators. Problem has always been that the steam radiators get hot in the lower apt but the upstairs apt is always cold. In order to make them comfortable we have to almost turn on our A/C during the winter. So we were thinking about installing a split system for the upstairs APT.
Your steam system imbalance needs to be addressed. Pick up a copy of "The Lost Art of Steam Heating" by Dan Holohan, and you'll probably find examples of whatever in your system needs to change. Its either bad vents/traps, improper vents/traps, or improper near-boiler piping...or a combination. Your pipes were designed by the dead men who first fit them to heat evenly from the start. I'm going through this now, have the venting set up pretty good but my near-boiler piping is terrible and the unit is oversized relative to the capacity of the radiators, so I'm just here hoping the boiler springs a leak before the gas valve goes from all the pressuretrol cycling.
It might be the valve caps, simple fix
Mini splits are the best! Another added benefit is when it is time to replace the units it a lot less money and easy to do.
@Tony Po A 5,000 BTU window unit is inexpensive. However a decent mini split at 12,000 BTU is only about $700 and will cool and last a lot longer. I just bought two a few weeks ago in a property in the Caribbean. They were branded as York, one 9,000 BTU and another 12,000 BTU. $1200 including installation.
Another great bideo
Thanks Richard, Would like to know more about designing a heat pump system. How well will that single indoor (evaporator) heat the downstairs unit given all the room dividers?
I love mine ! I have on the 2nd floor of my house and it works beautifully.
Hey frank am really thinking about getting this kind of system. How well does it heat your home. I have a force heating system, pretty old and the associated vents take up a whole lot of space in my basement, I really want that space back.
@@strumblackburn9395, it works phenomenally. You can set its temperature to whichever you like it and it goes there like a furnace or a/c.
.
I sleep upstairs and it was FREAKIN' cold in the winter and hot in the summer before I bought mine and had it installed. As I walk up the stairs I can feel the temperature warm or cool, depending on the setting. The interior unit is whisper quiet, as is the fan element outside.
.
I highly recommend it. I have the Mitsubishi split air unit and there are others to choose from. It's your call, but you won't be disappointed. I had a friend of mine install it with his son and he was the one who recommended this item. Hope this helps you.
@@whocares0692 first off thank you so much much for your great review. That is exactly I was hoping to hear. Sir, stay blessed.
@@strumblackburn9395 I also just had two of these Mitsubishi Mini split units installed. I had one installed in my garage and another one in my shed. Oh my goodness!!! I wished I would had invested in this units years ago! I’m very please!
@@eugeneduncan9726 thank you Mr. Duncan. I totally appreciate your review. I can tell your happy. I know am going to feel the same. Blessings
One of the best upgrades I made to my house that lacked a central HVAC system. Had it professionally installed as I didnt feel comfortable buying one of those DIY kits. The heat pump is absolutely silent and mounted to my brick with a similar bracket. You don't even hear it running outside unlike all neighbors heat pumps which sound like something off a battleship. If you go the installed route get multiple quotes and get an installer that understands your needs/ expectations. Not someone who wants to make it as easy as possible for them. Carrier Infinity Ductless system.
Do you live in an HOA? I’m thinking that mine will flip out if I wall mount a unit.
@@zeroturn7091 mine just wanted the lines covered up with aluminium trim
Asome video
These Split AC units are the future. We've been using them in Asia for decades and couldn't ask for anything better
Not here in the US. Here if we can afford central forced air and have the physical ability to use it it's what we always use.
LOL, we first used split system in 1995. At that time, nobody used window units in my country. Right now, people in my hometown still use split units. Newer condo units are using central. It's funny you can still buy window units in America as of 2021.
@@whoeverwhoever400 window units are pretty cheap. If I weren’t worried about creating a security weak point, an entry point for pests, and being an exterior eyesore I would definitely consider one. My grandparents had one in the 80s and that thing was a beast.
To my way of thinking, condenser's should always be set two to three feet above the ground on a regular base's, especially if you have a heavy snow or major leaf problem. The damage done by winter snow year after year along with salt, like any other metal product is really bad for the long term use.
The leafs should be enough of a reason because you are constantly having to clean up the unit to keep it from being plugged up for good ventilation through the evap and cooling of the compressor. Just makes more sense to me, but it does make installation and servicing a little harder, which is why I think they always put them on the ground.
Leafs? You think "leafs" is a word and you want to give technical advice? SMH
I did it once with my friend it take me one day to do this job it was a nice day with a good friend
Great video.
What did they do for HVAC in the master bedroom?
Also, do you know if any of the wall mount systems will allow you to connect the lines from the top coming down out of the attic?
Hey Richard I'm planning on getting mitsubishi 6+6+12btu with a 24 btu heat out door unit I think they come pre charge do I just install the unit or do I have to have a professional charge the unit or check it once finish install? Hope this question make sense
I LOVE THESE NEW UNITS. IM A ELECTRICIAN LOVE THESE UNITS THANKS AGAIN FOR THE VIDEO
Are they much cheaper to operate than a regular central heat / air ?
Found the answer. Thank you, friend. Great content!
This is a really good way to cool off your house if you don't have central air conditioning, I would think these units are best for small spaced areas like garages, workshops, shops, and much more, when I grow up I am would like to be an HVAC technician.
I just started as an HVAC tech at 31 years old and I wish I had done it sooner. It's very challenging yet very rewarding work and it pays very well. Not to mention being able to do work on your own house and not having to pay for someone else's labor can save you tens of thousands of dollars!
Bravo!!! He's mounting the condenser unit out of the dirt zone!!! This will cut way down on upkeep!!
I have a question I’ve installed mini splits I bought the Yellow Jacket 19173 5/16" Female Quick Couplers x 1/4" Male Flare adapter for my yellow jacket 1/4 HVAC hoses my question is when you break the vacuum after releasing the refrigerant from the mini split condenser into the line set when I go to remove my suction line hose from the suction line service port on the mini split a lot of refrigerant comes out squirting , what adapter do you use for mini splits for your HVAC hose to connect to mini split 5/16 service port
Finally have a 24,000btu coming for my shop been to many years suffering in the heat, hope it does the trick.
The best!
Finally got it up and running. The only delays we had was because we realized we needed some extra parts (I’ll list that below) ruclips.net/user/postUgkxihMYiJNXcHdbH-7ihymsLz61l7jVyb5O . So we have a loft where our current hvac just couldn’t seem to keep cool during the summer. We have been using a window unit since we bought this house over 6 years ago (all the houses in this neighborhood were built in the 80’s and majority of the houses built like ours use a window unit). I hate window units because they are just so noisy and the one we had really only cools one side of the loft. I had contemplated upgrading our current HVAC, but with all the rising prices these days, it would take years before saving up enough to do that. With the advice of my father-in-law (used to run an HVAC business), he recommended we get an inverter instead. We thought we bought everything we needed, but there were just a few other parts we didn’t anticipate needing (which is what caused most of our delay). My friend and father-in-law did all the work to get it installed and running and now we have nice cool air circulating nicely throughout the entire loft. It is very quiet and even the outside unit is much quieter than our main HVAC unit. Saved ourselves thousands getting this.
"We utilize blocking behind the brackets to protect the vinyl siding."
"Then we commence the drilling!"
They put blocking there so it would not crush the vinyl siding since it is not solid like wood.
That is LG Dual inverter which one of the best mini split in the market , I have one of that in my living room ,that is good to see people starting buying mini split air conditioner system, its 100% better and save a lot of money more than central AC conditioner
I already have a minisit install in garage. I have the outside unit on 4x4 on floor. I wanna mount it a few inches high on wall since they are pouring concrete on floor. Us there a way to do this without disconnecting any hoses?? Thank u
Anyone find a video about replacing an old fashioned wall unit AC with a mini-split? I am looking to cool a 3 room condo, 975 sq ft total (2 x 100 and 1 775 sq ft great room/kitchen). If I could get an inside unit in each room, that would be optimal.
How do these compare to central AC in terms of price, efficiency, maintenance, and longevity?
I've been thinking about a split unit for my garage. To keep it warmer in the winter and cooler in the summer.
I ordered a "Mr. Cool" 12000 btu unit from Lowes and it arrived at the store today. Going to pick it up on Sunday. Mine is for the garage as well but I also have to do some blown-in fiberglass above.
If you're going to do that make sure u insulate in the attic space above it otherwise you'll lose it all
@@staudtj1 I have same unit for a year....freaking love it!!
I'm looking into spray foaming my garage and adding a Mr. Cool diy mini-split as well. It's going to absolutely transform my garage.
Be very nice to warm the car up in the garage during the winter so it doesn't take long to start it up.
We have a Mitsubishi Mr. Slim installed in an non heated/AC room (I often don’t use the house AC since Mr. Slim unit cools the entire 1st floor of house & less expensive to use). It’s amazing, love it. It’s extremely quiet inside & out (walking past condenser I barely know it’s running). Highly recommend split units to anyone who doesn’t have AC.
Does your split have a heater ? How is it ?
just replaced a mini-split i used 16+ years for a new one this year, Hitachi RAS-28HQK/RAC-28HK1, total cost was around 1100 USD including installation.
Hello my question is. Did you add or take out take freon from the heat pump? I understand that you added nitrogen and vacuum the line or the pre charge unit is just good enough for plug and play?
Units come precharged from the factory. Nitrogen is added to perform a leak check. If there is no leak, the nitrogen is released and the lineset is vacuumed to below 500 microns. The refrigerant is then released into the lines.
He ran those screws into the drywall and missed the studs 😂
fishy dubs fishing
That’s completely intended. Sorry you’ve clearly never installed a split system.
Doesn’t really matter.
@@britexpat_l33t let me guess, you're one of those guys that uses dial gauges not a micron gauge..
@@neallyons9515 what measurement gauge I use is an irrelevance. It’s clear that if *anyone* thinks a split head needs to be mounted to studs, then they’ve never been certified to install split systems. Ever even looked at the mount template? Clueless you are.
I WAS THINKING ABOUT GETTING ONE
❤ This old house - scares me to think one day yall will retire 😬
I have a three bedroom house that has only a small propane stove for heat and NO AC I’m wanting to put a split system in. It’s a single level home on a concrete floating slab and wondering how to put three system in on existing interior walls?
I bought a DELLA with pre charged lines and it is SEER2 19 :)
It really blends into the room?
Can the exterior unit be mounted on patio stones?
Richard do you have a company that you think does the best job? I'm interested in a product like this!! Thanks!!
where did the drain line dump?
How does the LG compare to a Pioneer or a Mr. Cool? They almost double in price. Does the LG out last the other brands?
just put in my LG system in a new build for heating and cooling. Worked great at -5 F. Tonight is -10, might have to turn the fireplace on.
LG is garbage, use mitsubishi
@@Waymanator123 I have heard mitsubishi is garbage?
@@ryanfoss6243 For every brand there is someone saying it's garbage. Even if something works perfectly for 99.99% of people there's always the 0.01% who will swear they'll never buy from the brand again, even if it's actually the best in the market.
@@Waymanator123 Mitsubishi is garbage, use Toyota. Or even better, Tesla, right?
Oh wait, we are talking about cars, right?
Will the owners feel vibration and hear the AC based on it being mounted so high?
Does it have an RJ45 IP control vía wire ethernet too? I don't like they only offer them with wifi.
It's not cold refrigerant it's actually boiling at a very low temperature and the evaporator pullls at a split second temperature across that coil very fast because it's removing heat from that area.
When you hung the outside condenser on the vinyl wall, can you explain exactly how you did that? What kind of screws and bolts? Did you go into concrete or wall studs? How exsctly do you protect the vinyl siding? How can you be sure your rig will be strong enough to hold the weight of the unit? Sorry if these are noon questions!
Wall studs.
I love yall guys. Wait can a contractor say that?
What's with this channel's videos not showing up in my subscription feed??
How do you clean the inside unit
It mounts with just drywall screws?
Mini-Split are awesome, installed a diy unit my self. Was not to bad to install, would have been easier with a 2nd pair of hands. Heats a small 400sq to 65, with outdoor been 10-20 in new England weather. It only added $60-70 to the electric bill.
Is it a MRCOOL?
@@ForkLiftCertified yes.
I have installed 8 of them so far. They are a wonderful unit.
I put a Bosch unit myself into the converted garage, but I did get a pro to pull the vacuum and charge it.
Then I hired a company to install a 3 head unit, and yeah they did run the lines on the outside and ruin the looks of my house. Couldn’t belief it. Should have done it myself.
@@generallyhelpfulsoftware646 I ran my line up throw the attic crawl space, and cover up the drain line with a drier vent. I want it to look as clean as possible. I almost disguise the drain line as a water spigot. but was worried someone would turn it off or something.
Im gone to make something to better protect the out door unit for nor Easter of heavy snow, i notice the past few storms it work a bit harder because the snow got on the coil a bit, nothing bad but i like to put something in place just incase.
Still amazes me how long it’s taken the US to start using this type of aircon unit like it’s the latest greatest thing when the rest of the world has been using them for decades.
Well actually most air conditioners in the US are Central forced air.
But the main population that has no access is everyone in populated cities who live in high-rises would have no place to put their units. So everyone is stuck with the regular window AC.
Mini splits have been used for last 25 to 30 years in USA. They are more of a pain to service and they also tend to grow mold at times. This is cause all mini splits have very poor filtration. Merv 4 at best so that makes them high maintenance. They need to have a deep clean more often than traditional split systems with ducts
Just read a report that the US is no longer in the Top 10 Most Innovative Countries, and the US arguably had the worst coronavirus response to boot.
@@PawsAndKeys your right China is the worst for Corona Virus response
@@pineychristian The Coronavirus is the longest something made in China has lasted!
The one thing I didn't like is how you try to scare homeowners away from doing it themselves! I have 3 units on my house Mr slim with 4 head units pioneer with two and another Mr slim with single head, I did the installation myself to get rid of the energy sucking 5 ton unit which is still in place but turned off. With some reading and specially now with RUclips instructional videos some homeowners can do this.
to save money you can buy the unit and do 90% which is placing the unit on the wall running all the lines through the basement to the outside unit. then run the electrical from outside unit to the fuse box and secure all the lines to code. make sure you read your local code as they may very from state to state or county. the only thing the hvac guy will have to do is finish hooking up the lines test the lines fill up the lines. then electric guy comes out and hooks up the electric preferably before hvac. this will save you a lot of money as you do all the work id probably say it would cost $3,000-$6,000 on the unite and $1,000 on the hvac and electric guys vs if they did it all $6,000-15,000.
Question, does the clearance from the condenser to the wall matter? cuz I have a senville ill be installing and it says 12" clearance from the back wall but the wall mount that come for it gives me like 4 1/2" clearance, all other clearances are good just that one, Thanks
The manufacturer will tell you the minimum. Check out the installation instructions.
I have the exact same problem now. Mini splits says 12" from wall on back and same company sells wall bracket with only 4" from wall.
Very confused and don't know if will make much difference.
Who did that cinder block work?
Any advice on getting a larger unit mounted? The one we are installing weighs 160lb. We have the rated bracket for it but we need to get it up to the 2nd floor back wall of our condo building.
In Australia they use a small electric tbar lift. You can probably hire one. I had my outside units placed right up under the eves opposite the inside unit.
Funny that this would be on an Old House segment when many of us have naturally-stained, all-wood interiors in our Arts & Crafts homes. And white would stick out big time. It would be nice if these mini-split companies would have optional wood covers that you can stain to match or pick a stain color.
Most people that have homes that nice would probably want to have something custom built to match their existing woodwork anyway... just hire a cabinetmaker (or a finish carpenter that specializes in old homes, etc) to build a cover for it that will vent the air out but hide the wall unit itself.
He said the drain line would be run “with pitch” to allow gravity to do its work. However, they snugged it up to the floor joists. Perhaps the house leans and that’s how they utilized pitch.
at 5:31 the corrugated lineset is still dangling down to go out a diff area of the house. The linest tubes are strapped together going the other way. I had to look twice too lol
I see what you're saying but once the line fills with liquid it will create a siphon that will drain regardless of pitch. It's not ideal but better to have a couple low points for liquid to seal the line and keep critters from crawling up in
I'm having a whole house system installed this week. It's thru an energy saving program in my state. I sure hope they know what they are doing when they get here tomorrow. I'm somewhat nervous about the whole thing. I have done a fair amount of research on these systems. My main concern is where the heads will be located. If not done properly, it will not be energy efficient. Wish me luck!
Wondering how your installation went and if you’re liking it
Ghees, if you’re going to get one of these and pay a contractor, just get the 4-5 zone heat sump version and get rid of your old furnace
Is there any distance limits between the two pieces of equipment when installing the units?
Shorter the better. Big thing to consider is the amount of refrigerant changes based on the line length.
Yes
25 feet per manufacturer. You could go longer but you have to add more refrigerant.
Length requirements depend on the manufacturer. There are minimum line lengths (many times 10’) and a maximum based on the model. The smaller Fujitsu units max out at 64’, the larger single zones at 164’.
Can you use a mini split to cool multiple rooms. For example one outside unit with 3 inside for lets say 3 bed room?
Yes. I have exactly that in my house. Each of my 3 bedrooms have a head unit and they are all connected to a single outdoor unit.
They can all be controlled independently.
@@_valxp thanks. I will look this up before summer hits
Ducted mini-splits are perfect for this purpose. One head per room doesn't work well because the load for each room is too low so the units will be short-cycling all the time, which hurts durability and efficiency a lot.
Super question .
What if they are mounting the outside unit to stucco rather than to siding?
With the wall bracket it is really not far enough away from the wall to allow good air circulation through the unit. Melt my poor vinyl siding maybe.
I need to lift my sinking house but my outdoor unit is placed on the ground. Do I absolutely need to decommission the outdoor unit before lifting the wall? I only need to lift the wall by 7cm or max 10cm. Can I just lift the outdoor unit slowly as I lift the wall?
You could do a pump down to trap all the refrigerant in the outdoor unit, so that you could disconnect the line set. You would also need an hvac vacuum to vacuum out the line set and indoor unit before reconnecting it.
how much in labor was that install
how may unit would I need to cool 1 floor
Good morning everyone from wellington Somerset in the UK
Good day
When was this originally aired?
Google is your friend...
I still have my old 4 ton furnace and condenser (both work), and I was told that twinning two 4 ton systems on a 2000 sqft property was a bad idea. I know that I would need new independent ductwork to keep one system from back wheeling the other, and a 40A panel upgrade to run both. The biggest issue presented was a new supply duct (likely in the hallway), and that too much positive airflow would create a humidity problem leading to mold.
Looking into a split I’d rather the indoor unit be installed above the door, and wonder if these can be be controlled via third party smart thermostats? I’m also not sure if my HOA would go for a wall mounted unit.
"Protect the vinyl siding" next shot is a hole saw to the vinyl siding
Why do you have to be such a Debbie Downer!!!!
Anyone else cringing because he mounted the inside unit with drywall screws?
And the one they showed going in didnt hit a stud, not even the lathe
Yes. I would have opened up that wall and nailed some 2x4’s for bracing situated in position so that it supported the unit then covered the hole I made with the unit and it’s bracket. If need be I would have repaired the drywall before mounting the unit. Additionally I would have used a 2 1/2” wood screw. No way I would have trusted the way they mounted it with drywall screw into nothing. Hell I wouldn’t even trust that drywall screw to hold up a picture frame.
The head units way like 10 pounds....come on man! 1 screw in a stud with some others to stabilize and level and its not going anywhere. Mine are set that way and haven't moved for years. Now, if he set the condenser that way i'd agree with ya.
@@beerbeforebreakfast I would agree with you but the 1 1/4” sheet rock screw he used clearly did not hit a stud. I’d rather over secure it than under secure it. By the way I love your name. It reminds me of a line in a great Kris Kristofferson song that Johnny Cash had a hit with when I was in high school. “The beer I had for breakfast wasn’t bad, so I had one more for dessert”.
Didn't notice in video is he did ever get a stud. Thye dont show you every detail, sometimes makes you think they are hacks when they are actually skilled and professional.
Thanks for the complement on the name, never knew the Johnny Cash line even though i love Cash. My previous name was Fixing Things and Fishing. I need to have 2 channels cause i associate myself with both in real life.
How would this go about cooling the other rooms in the house?
Multi Zone mini split
@@sherloidbai7064 thanks
Does anybody happen to know this? If there is no alternative to mount it more than 2 and 1/2 to 3 feet high will it work at that height? It is all windows after that height.
Would like to have heard more about the heating aspect.
It just reverses to do that.
@@NicholasLittlejohn understood but how efficient, and average cost of heating
@@gilbertdare5921 I have a Mr.Cool 24k btu .
Honestly the heating could be better and the electric bill stays up all year.
The hspf and btu of the heating is subpar compared to the gas units.
To be more efficient for a heat pump,a multi zone unit is best.
Heres a little info on ratings
callapollo.com/afue-seer-and-hspf-ratings-explained/
@@myname9252 thanks for the reply
All the manufacturers have high heat units which are quite good.
Today on Ask This Old House: How to install a mini-split!
Step 1: Call a HVAC contractor
As an HVAC mechanic myself I agree.
Parabéns da forma correta a instalação desde ar condicionado
how much noise makes its way through and in the wall it’s self?
and how to build a solid frame work that limits the vibs and sound? if a car driving by can rattle your windows and not even be all that loud to start with as the “heavy” base sound goes right through walls made of wood.
I wouldn't use the wall mount, ppl have said it can put a light weird vibration in the house. Its easy to put a paver and pad location to anchor to, it can be elevated if you need aswell.
Up to 12000 it is probably ok, bigger than that you can turn the whole wall assembly into a soundboard. Especially if you use it to heat.
Do these get mold like air conditioners and you have to clean them regularly
They get mold on the fins inside if your climate is very humid. In Australia cleaning involves surrounding the unit with a plastic catcher & spraying cleaning foam then rinsing. There are companies that do this. There are removable filters inside that catch dust & I rinse these off under the laundry tap.
Where was this when looking on how to install one of these mini splits...
How long have these been around as I remember as a kid in the 80’s my church the LDS church in Brandon FL had these in the bishops office so when they came in to do clergy work they would not have to cool the whole church building. It was just outside the office. It was a Mitsubishi brand if I remember right. Circa 1988.
1940s invented by mitsu. Just never caught on in the states
@@dontdoxmebro They go way back in Asia
Can put them on RVs too
Could a unit like that run 2 or 3 different inside units?
they make bigger condensers for multiple zones
Yes, look them up. I believe they have up to 4 head units
@@booobtooober A lot more than 4. Check out the Mitsubishi City Multi.
Looks like they have a nice asphalt yard!
Nothing to mow. Sounds good to me!
Why throw shade?
They are expensive to run in winter time(Vermont and still need backup heat) My electric went $100 a month to $440
The heating efficiency varies quite a bit from 300% to 530% (47F outside 70F inside). And of course it goes down from there. When in heating mode it's important that the outside unit is elevated so it doesn't sit in its own cold air, snow or leaves. Efficiency is also lower when it's running at full bore.