Back to back split system installations

Back to back installations are the simplest and cheapest option for
installing a split system air conditioner. The indoor unit must sit on an external wall of the home or apartment and the out door unit is located directly behind it either on the ground or mounted on a wall bracket.

All wall split installation prices are based on real jobs

What you get:
Outdoor unit positioned on concrete slabs or plastic feet
Up to 3 meters of refrigeration pipe and interconnecting cables
Up to 10 meters electrical supply
Includes 1 Length duct cover (2.4meters)
Weatherproof Electrical isolator next to outdoor unit
Compliance certificates
2.5kw to 3.5kw connected to existing power circuit
5.0kw to 8.0kw connected to a new 16 amp circuit

These prices include both refrigeration work and electrical work.

Extras…

Maybe you need to go over windows and doors or avoid a hot water heater or clothes line that is in the way.

Extras are charged for pipe, drain and electrical cables that exceed 3 meters.
Charged at $55 per meter

Basic back to back with extras

These two examples are back to back installations with extras. The indoor units are on the same external wall but further away from the indoor unit.

Price example –
7.0kw LG unit
Back to back installation
Extras (4m of pipe and duct)
Total – $2995 inc GST

Price example – 
7.1kw Daikin
Basic back to cack installation
Extras (2m of pipe and duct)
Total – $3650 inc GST

Notice the colour bond ducting was matched to the two different colours of the wall. White above the glass door and brown along the brick wall.

Our website offers complete package deals for multiple split systems.

As back to back installations are the most cost effective installation type it is very common for people who have purchased a split system home package to have their units installed this way

This installartion is a classic example of heating and cooling your entire home as cheaply as possible.

Second storey suburban house with the outdoor air conditioning unit mounted on a wall bracket attached to solid brick.

 Second storey suburban house with the outdoor air conditioning unit mounted on a wall bracket attached to solid brick.
3.5kw unit
Extra – wall mounting bracket
Total of installation – $2550 inc GST

Client wanted the unit mounted up on the wall as the indoor unit was in a bedroom upstairs. The units are mounted back to back but getting the outdoor unit up into this roof and mounting it puts it into the intermediate section.

Commercial premises with limited access to lane way where the outdoor unit is mounted. Limited access adds a little more time and labour costs.

Commercial premises with limited access to lane way where the outdoor unit is mounted. Limited access adds a little more time and labour costs.

7.1kw unit
Unit mounted 5 meters off ground
Total of installation – $3895 inc GST

This air conditioner was mounted 5 meters off the ground.

It requires the use of a motorised lift and adds costs due to the extra time and labour.

Lifting flat roofs to run pipes in roof space

Older style mud brick house with limited roof space to run pipes inside.

7.1kw unit
Piping and interconnecting electrical and duct lengths (extra 4 meters)
Running pipes through flat roof space
Total of installation – $4195 inc GST

Notes:

Client didn’t want outdoor unit to sit below window as it was a narrow walkway below.
The solution was to take the pipes up into the roof, which is flat tin. Pipes had to go through two parts of the roof and then come down the back side of the house where the outdoor air conditioning unit was out of the way.
It wasn’t mounted closer to the indoor unit on the roof because the client didn’t want to see it on the roof.

Mounting outdoor unit on a pitched colour bond roof

Pricing example –
7.1kw unit
Piping and interconnecting electrical (extra 2 meters)
Roof bracket
Total of installation – $3795 inc GST

Notes:

Client didn’t want the unit to sit on their decking so the solution was to mount the outdoor unit onto the roof. As you can see, getting a heavy air conditioner up onto to a pitched colour bond roof can be very dangerous. Making sure the right installer is installing your air conditioner in this situation is mandatory. Imagine one of these things falling off your roof!

Running pipes inside window bulkhead

This indoor unit was mounted over a bay window which meant the pipes, and drain had to be run inside the roof space. 

Pricing example – 
9.0kw unit
Piping and interconnecting electrical (extra 2 meters)
Running pipes through bulk head (requires lifting roof)
Total of installation – $4450 inc GST

Commercial offices in a heritage building

This installation was in a commercial office. There were 3 units in total. The first photo shows the indoor unit. Due to restrictions on locating the units on an external wall, the unit was mounted on an internal wall. No holes, ducts or pipes were allowed on the outside of the building.

Pipes were run internally straight up to the roof. Drain was taken outside to down the pipe. All the duct and drain were later painted to blend as best as possible.

All three outdoor units were mounted on the roof. The installation required:

Lifting roof sheets
Crane truck to lift units
Roof brackets
Minimising brick dust when drilling
Working around office hours
Minimal disruption to business