Split System Air Conditioning Installation Brisbane & Sydney


A Split Air Conditioner consists of an outside unit and an indoor unit, connected by pipes containing refrigerant gas. Refrigerant is distributed through the copper pipes that cycle through the system to produce either heated or cold air. The outside unit is installed on or close to the outside wall of the area that you want to cool down. This unit includes the compressor, condenser coil and the expansion coil or capillary tube.

Split Systems Air Conditioners are great for keeping any apartment, single rooms in homes or little workplace areas cool in summer and warm in winter. They are also the most common air conditioning type in Australia, especially in homes without ductwork and are best for a room or open-plan area up to about 60 square metres.

The single system works well inside a small area providing adequate heating or cooling. Using it in conjunction with other sources will make your home that a lot more comfortable.

A big advantage to split air conditioning systems is the option to expand the system with extra air outlets for other rooms. Each one can have its thermostat providing individual management to turn on or off the air conditioning as required.




An inverter model means that the compressor is charged by a variable speed drive or ‘inverter’, that permits the compressor to run at a variety of speeds from slow to fast, to match the output needed. An inverter split system regulates the space temperature by graduating the speed of the compressor motor, similar to using the accelerator on your car to remain at a continuing speed. The most important distinction between inverter and non-inverter air conditioning units is that the motor of the inverter compressor has a variable speed. A sensor within the inverter adjusts the power according to the temperature within the room, lowering the electrical consumption and preserving energy.


A reverse cycle air conditioner can both heat and cool. it's one of the most affordable ways to heat your home in colder seasons.

In cooling mode, a split-system air conditioner extracts heat from the indoor air and transfers it outside, via the refrigerant gas within the pipes connecting the indoor and outside units. The outside unit releases the warmth and pumps the cold refrigerant back to the indoor unit where the cycle continues.

In heating mode, the process is reversed, to extract heat energy from the outside air and sends it inside, producing heating instead of cooling.


If you only want an air conditioning for cooling in summer (for instance, if you reside in a district with milder winters or you have already got another heating system), then a cooling-only air conditioning might be right for you. It is typically cheaper than reverse-cycle models however usually have all identical features.

CONTACT US NOW  Brisbane (07) 3219 1817   sales@lawsonair.com.au   |  Sydney (02) 9188 6877   sydney@lawsonair.com.au


Before having your split system installed, you need to decide what one is the best unit for you. This is when you need the expert service of a licensed team. Contact our friendly professional team now and we will help you choose the best air conditioning unit for your home. When selecting an air conditioner we will take into consideration the dimensions of your home, type of space where the air conditioning is going to be installed. 

Here's our rough guide to the air conditioner capacity you'll want for a selected space size.

Room size Capacity
Up to 20 sq m 2–2.5kW
20–40 sq m 2.5–5kW
40–60 sq m 4–6kW
60–80 sq m 5–7kW
80+ sq m 6–9kW

That is the approximate guide, but you need to do a correct calculation before purchasing your air conditioning unit, or else you'll run into following problems. Models too powerful for the area could run frequent short cycles to achieve the required temperature. This can result in the room becoming too cold or hot, inadequate dehumidification, raised power use and running costs, and wear and tear on the system. Underpowered models may have to run more often at maximum output, that may dry the air excessively and additionally produce excessive wear.

The calculation takes into account:

  • Dimensions of the room: length, width, height.
  • The type of room: lounge, open-plan living room and kitchen, bedroom, etc.
  • The size and positioning of the windows and glass doors in the house as large north- or west-facing window absorb a lot of heat in warmer seasons.
  • Shading and curtains on the windows.
  • Insulation of the floor, ceiling, and walls.
  • The local climate.


We want it to be an easy process for you when installing a new split system air conditioning system with Lawson Air. Simply purchase your system from us and we'll book in a licensed installer to come to your premises. SHOP NOW


1. Contact our friendly team at Lawson Air Conditioning and we will assist you to choose the most efficient air conditioning unit for you. Please check our online shop for more options. SHOP NOW

2. We provide free onsite quotes, friendly and highly skilled team will come to your premises and assist your specific needs. 

3. We will arrange a day and best suited time of your installation. 

4. We offer regular air conditioning service to keep your system well maintained. Please feel free to ask our technicians regarding keeping your unit running clean and economical all year round.

CONTACT US NOW  Brisbane (07) 3219 1817   sales@lawsonair.com.au   |  Sydney (02) 9188 6877   sydney@lawsonair.com.au