Two storey homes

Installing a split system in a second storey room

Get an online quote now

two storey home

Abbotsford, Melbourne

Installing a split system in a second storey bedroom – outdoor unit mounted on first storey roof

Some second storey installations allow you to mount the outdoor unit on a roof below which can make the location of the units a back to back install.
Of course dealing with getting the outdoor unit onto the roof can add extra costs. 
This installation in Abbotsford was fairly simple in terms of finding the best locations for both the indoor unit and the out door unit. The main wall inside the bedroom was actually on an angle so mounting the indoor unit to the wall was impossible as the unit would have been on an angle also. The units need to sit exactly level for perfect operation and with the unit on an angle the water being exracted from the room would just spill over the internal tray and leak all over the floor.
The location above the door was the only external wall capable of installing the split system. It was also a pretty good solution as it allowed very good air flow straight down the lenght of the room whilst also keeping the air from blowing directly onto the bed area. 
The video below shows the installation and also some information on the unit installed. The Mitsubishi SRK35ZMA is a great bedroom unit as it is very quiet and has excellent air filtration filters.

Warrandyte, Melbourne

Installing a split system in a second storey room


If you are installing a split system into a second storey room in a residential home there are a few common ways in which to do it. Of course it comes down to exactly where you are locating the indoor unit and also your own personal aesthetic preferences.
In a situation like this one, there is a roof just below where the units are mounted with a veranda below. It is possible to run the pipes down through the roof and mount the units under the veranda. It’s actually not a bad location because the outdoor units would be sitting under the roof out of the weather and out of direct sunlight throughout summer which can increase the air conditioners efficiency.

But the clients in this job prefered to mount them above the roof so they where out of sight and not in their way. What made it relatively easy for us was being able to work off the roof to mount the units. Essentially like working on the ground.

Both units where installed to heat and cool the upstairs bedrooms.

What’s important here also is to install units that are quiet. With weatherboard homes there is a chance depending on the stability and age of the home that you might experience some vibration. Not something you want in a bedroom in the still of the night.

wall-bracket-split -systems

Doncaster, Melbourne

Above a pitched roof


Mounting a unit on a second storey above another pitched roof is also a great solution. This one is mounted above an adjoining garage. Once again, we are able to work of the roof and mount the unit into solid brick. It is also on the back yard side of the pitched roof which means from the fron t you can only really see the top of the unit, so it is nice and discreet.

Usually we would move the unit over more to the left and down a bit so it is completely out of sight from the front but as you can see there is a window to the left so we couldn’t move it any further down.


Glenroy, Melbourne

Installing in second storey bedrooms


This installation is a common type when wanting to install a split system in an upstairs bedroom. Because it is mounted above the pitched roof downstairs it is easier and cheaper to mount the unit on a wall bracket as close to the indoor unit as possible.

The unit was mounted to the back (left of image) of the pitched roof to minimize being able to see it from the front of the house. If the pitched roof below was not there the unit would be mounted all the way down to the ground or on a wall bracket approximately 7 feet from the ground.


Greensborough, Melbourne

Second storey bedroom – Foam rendered exterior wall


This installation is a perfect example of spending a little more to get a better outcome.

The second storey wall is actually foam and not a brick wall. The foam it’s self is approx 150mm thick and has a render over the top to give it a solid brick render look.

Normally to keep the cost to a minimum we would mount the outdoor unit on the wall above the tiles. But being foam it is not strong enough to mount the wall bracket to. Technically it could be possible to use extra long bolts and fix into the timber studs inside the wall but that would leave the unit susceptible to internal vibration.

Our solution is to mount the outdoor unit on the nice solid brick wall below the tiles.

This requires use to penetrate the tiles and take the pipes and cables through the roof and out of the brick wall below. The tile is then weather sealed with a decktite and silicon. As usual we matched the duct cover to the colour of the render to provide a nice finish to the existing wall.

The outdoor unit is securely mounted to the bricks below and also is just over 7 feet off the ground to ensure that it is out of head height.

Ringwood, Melbourne

Installing outdoor unit on a flat roof


This installation is also a great  example of spending a little more to get a better outcome.

The indoor unit is located in a downstairs room and once again the client did not want the outdoor unit installed back to back because that would have left the compressor on the ground next to their beloved plant collection.

If you are not aware, the outdoor unit (compressor) blows out hot air when it is in cooling mode, leaving the plants located in front of it to an almost certainly bleak future.

The obvious solution was to mount the unit on the flat roof above. 

This means taking the pipes up through the eaves and penetrating the tin roof. We were also able to locate the indoor unit in just the right position to have the duct work right in the corner of the two walls. This makes the whole installation that little bit more neater.

outdoor unit ringwood