
Do the lines of a mini split run through the walls?
I had the lines of my Mitsubishi mini-split run through the walls and they exit to the exterior at the floor plate. The installer did put a plate over them to protect screwing or nailing into them. If you have to get to them...replacing some drywall is not a big deal...but unlikely any issues with lines.
Do you need to install a mini split in a building?
In construction projects, high-rise residential buildings are often built with the refrigerant lines, condensate drain line and wires of mini split air conditioners concealed in dry walls. As a result, new homeowners only need to install the mini split indoor and outdoor units.
Can mini split refrigerant lines be run in walls?
Mini split refrigerant lines can be run in walls. It is a common practice to hide the refrigerant pipes of mini splits in dry walls for aesthetic purposes. Apart from being more difficult to repair, concealing the refrigerant lines in walls have no impact on the performance of the mini splits.
What size do mini split lines come in?
Nonetheless, copper lines on mini-split air conditioners range from 1/8-inches to 1-3/8-inches in nominal size. Where do mini split lines usually run? Most mini-split air conditioning systems have refrigerant lines, wires, and drain lines installed above ceilings.

Can you run Lineset in wall?
Yes, it can be, but it's going to be a little more difficult that a normal DIY installation. If I'm understanding what you're saying, the line set is going to have to go straight down through the interior wall. So, that means you're going to have to bend that line set a full 90 degrees, which could cause problems.
Can a split system be installed on an interior wall?
Can split systems air conditioners be installed on internal walls? Yes, they can! Below are some examples of installations of split systems on internal walls. Some installations of split systems require the inside unit to be located on an internal wall, with the piping laid up through the roof.
Does a mini split have to go on an outside wall?
The indoor units do not need to vent through an exterior wall, so ductless splits are a good option to cool rooms with no windows and no exterior walls.
Can you run mini split lines in basement?
With their low energy costs and energy efficiency, a ductless mini split air conditioning system is perfect for any basement.
Can you install a mini split anywhere?
You can install a ductless mini split anywhere. These systems can be installed in any room, no matter how big or small the space because they are usually hung from the ceiling or on a wall, making them non invasive in any size room or home.
Can mini split lines run through attic?
First, you will have to gain full access to both of the ductless mini-split lines. Often, this step is a no-brainer as the lines are easily accessible on an exterior wall. However, sometimes you will find that the lines are routed through an attic/other space or are covered by a line cover.
How far can you run mini split lines?
In some cases, the space from one unit to another may be slightly shorter at 15 feet, so you'd need a line that's about as long. The longest mini split line you can get is around 50 feet, sometimes double that, but in most situations, that should be considered way, way too much line.
Where is the best place to put a mini split?
Generally, the indoor unit of mini splits should be installed at 7-8 feet above the floor with 8″ of space away from the ceiling. Most mini splits are best to be installed directly above the bedhead in the bedroom.
How close can a mini split be from the house?
The condensing unit needs both overhead room and some space on the sides. On the day your ductless mini split system is installed, the technician should set up the condenser so it has 20 or more inches of overhead clearance. From the wall of your home to the condensing unit, there should be five inches if not more.
Can mini split lines run through garage?
Yes, you can install a ductless mini-split system in your garage. Ductless units provide targeted comfort solutions not connected to your existing HVAC system. Connected by a line set (refrigerant lines, communication wire, and drain tubing), mini-split systems are convenient to install.
Do mini splits need a return?
Mini splits cannot exchange air like a traditional air conditioner can. However, you can install a fresh air processing unit that will filter out carbon dioxide so concentrations never reach dangerous levels.
Can heat pumps be installed on internal walls?
Heat pumps are easiest to install on an external wall. It is sometimes possible to install them on an internal wall (a wall dividing 2 rooms), although it is usually a more involved and costly process.
Where should a split system air conditioner be placed?
It should be: Away from direct sunlight as much as possible (the south or south east side of your home away from the afternoon sun is often a good location). In an open space where air can flow around the unit. Accessible for carrying out maintenance and repairs.
Can a heat pump be on an inside wall?
Wall mounted heat pumps work especially well if you have one or more rooms that do not have exterior walls or window. The heat pump is extremely quiet and only requires two inches of clearance from the ceiling, allowing you plenty of placement options.
Can you put a heat pump on an internal wall?
Heat pumps are easiest to install on an external wall. It is sometimes possible to install them on an internal wall (a wall dividing 2 rooms), although it is usually a more involved and costly process.
How do I hide my split system air conditioner?
22 Ways You Can Hide Your Air Conditioner Unit OutsideBuild a Wooden Cover. ... Get Creative With an AC House. ... Hide It Behind the Bushes. ... Make a Box With a Door. ... Stack Planter Boxes in Front of the Unit. ... Place the Outdoor Unit Inside Aluminum Slats. ... Grow Vines Around Outdoor AC Unit. ... Create a Shed.More items...
What to consider when mounting mini split indoor units?
The two things you have to consider when mounting your mini-split indoor units on an interior wall are aesthetics and cost.
Why are mini split blowers installed on the outside of the house?
Mini-split blowers are usually mounted on an exterior wall because this makes a shorter tube work for the power and condensate lines to run in . Placing the blowers on an interior wall can complicate this, that’s why it is not always preferred by installers.
What About the Drain Line?
Any air conditioning unit manages humidity as it transfers cold and hot air within the system so moisture will definitely be present. With mini-splits that are mounted indoors, you have to figure out where the drain line goes.
How to keep pipes out of sight?
Running the tubes within the walls is probably the most effective way to have the pipes out of sight. However, a few things should be considered before going through with an in-wall tubing system.
Can you install a pipe on an exterior wall?
With a regular installation that’s mounted on an exterior wall, the pipeline is out of sight and runs outside of the house. But once done on an interior wall, the pipes will have to run indoors towards the outdoor unit. If you don’t want these pipes disturbing your home decorations, there will be additional construction needed in order to hide them.
Can a mini split drain go up the ceiling?
The drainage can not go up the ceiling. Liquid moves down because of gravity. Condensate pumps can be used but this is an additional process that can be an unnecessary complication for your mini-split installation process. This also entails an additional set of significant costs that can be prevented with careful planning. You should only go with this layout if there is completely no other choice.
Can you access pipes hidden inside walls?
Another thing you may want to consider is having access to your concealed pipes. Since they are hidden inside your walls, it will be difficult to access them again if repairs and adjustments will have to be done in the future. Repairs on the pipeline aren’t so much of an issue if your lines were installed by a competent professional, though.
What is a mini split?
Split means they are divided into two main parts. The outdoor units come in cooling only units or heat pumps and the indoor unit is referred to as a head. A mini split head can be installed on almost any wall within your home, but with some caveats. The least expensive installation will usually be on an outside wall.
How does a refrigeration line work?
The refrigeration lines that connect the indoor and outdoor units are easily routed through the wall along with a power cable and the condensate line that drains off the the condensation from the head to the out of doors. The reason the labor goes up when choosing an inside or interior wall to mount the head is because all the lines ...
Why is there a gap in the air conditioning?
There are two reasons for this gap. Air flow. Room to lift the lid to access the filters. Many if not all ductless units pull air through the top and discharge the conditioned air out the louver at the bottom. One of the biggest and best rules of air conditioning is air flow.
Can you run copper lines in a mini split?
Running line sets in newly framed walls without insulation and sheet rock is a piece of cake. Having refrigeration copper lines inside of unfinished walls can be hazardous to the health of your new mini split if the sheet rockers are careless and willy nilly run screws where not enough care was taken to prepare the lines.
Does a mini split look hideous?
I know of an installation of a mini split that looked absolutely hideous. My daughter had it installed in her duplex. I won’t discuss here why she didn’t have me do the job, but it had to do with rebates which I refuse to participate in the programs.
Can vertical lines be used on the exterior of a house?
Vertical runs either up or down the wall from the head are slightly easier. Your will enter the crawl space or the attic and then have the line set on the exterior of your home where you can use these covers again to help the aesthetics of all the lines being exposed.
Can Mini Split AC Lines Be Run Inside The Walls?
That’s always an option to run the lines inside the wall. Vertically is usually easier than horizontally. Horizontal runs inside a wall would include notching every stud to allow the lines to recess into the wall to be covered over by whatever you removed, which in most cases would be sheet rock.
What is mini split oil?
It’s a gas that boils at a very low temperature. The compressors in mini split systems has a synthetic oil in the bottom to lubricate the moving parts. The oil and the refrigerant mix together slightly and some oil moves through the copper tubing with the refrigerant in a cycle that returns it to the compressor.
What is ductless line cover?
Ductless line set covers help to neaten up the mess that’s on the outside of a wall, but the disruption is still there staring you in the face every time you or a visitor walks by.
How often should I run ductless pipe?
Keep away from forming traps or letting the pipe sag or droop. Secure the pipe as often as possible, at least every four feet. In the image below it shows a mini split with the line set running up which is okay.
Why bury a compressor line underground?
By burying the line set underground you also may be creating a cold spot for liquid to pile up and subsequently slug the compressor with liquid. Compressors are meant to pump only vapor.
Is there a minimum length for a mini split?
But, to answer the question, is there a minimum length for a mini split’s line set. Yes, there is. Follow the instructions. One of my biggest weaknesses. It started at my first Christmas. Just open the box and figure it out.
Should all lines be insulated?
Tony, yes all the lines should be insulated, they usually come that way. The routing you described sounds like a good way to go. Should look good that way. – Chad
Can mini splits run ductless?
Good refrigeration lines principles for mini splits are no different than any other heat pump or air conditioner. You can run a ductless line set…
Why are mini splits so popular?
Why? Because of the lack of ductwork.
How long does it take to install a drain line?
It also takes more time to locate and install the drain line and cover the line set. Just like that, a one-day job may become a two-day project.
Why Do Most HVAC Experts Recommend Exterior Wall Installation?
Before we get to the interior wall, it may help us understand why most HVAC professionals recommend installing your heat pump on an exterior wall. The two main benefits are as follows;
How does an exterior wall work?
Exterior wall installation significantly reduces the distance between the indoor air handler and outdoor condenser, effectively reducing the length of refrigerant lines and electrical wires needed for the installation. In addition, it simplifies the installation process by reducing or eliminating the time it takes to run wires between the outdoor and outdoor units.
Why is a longer line set needed for an air handler?
For one, a longer line set means that a larger portion of the line set is exposed to damages such as dents and cuts, which can potentially cause refrigerant leaks.
Can you install an AC on an exterior wall?
Exterior walls are better equipped to bear the weight and withstand the vibration. If your interior walls aren’t load-bearing walls, you may not be allowed to install an AC on them at all.
Can you install mini splits on walls?
Greater maintenance is needed. Key Takeaway. This post may contain affiliate links, which means we may receive a commission if you click a link and purchase something that we have recommended. Yes, you can install a mini-split on an interior wall.
How many lines can you connect to a 50 foot line?
2. There are coupler kits available to connect two lines together for longer runs. You could connect two 25 foot lines for a 50 foot line.
What happens when you come out through a wall?
When you come out through the wall you have more room to work, and can have a slightly less extreme bend.
How far should a ceiling be from the floor?
For a ceiling that is less than 9 ft tall, the recommended distance from the floor is 78.55 in (6.5 ft). The unit would function installed at 5 ft, but it might not operate as effectively.
Can you run refrigerant lines horizontally?
Yes, it is fine to run the refrigerant lines horizontally. The condensation drain must have adequate slope.
Can you use DIY lines on a wall?
jarhead. Posted on 10/6/2020. Yes you can easily with DIY LINES but be sure to wrap the lines with the cloth tape which helps it slide easier.
