Air Conditioning

Sydney is a big user of air conditioning due to our hot summers. If you plan to install air conditioning, it may be more efficient to go for both heating and cooling in the one system. However the Electrical By Freddy team can consult with you on which type of system will suit your needs and budget. Furthermore we will help you balance energy efficiency, reliability, noise, aesthetics, lifespan and cost of your air conditioning.


We offer almost all types of air conditioning serives


You'll no doubt be familiar with the site of slotted boxes protruding from windows or walls, both outside and inside homes. This old style is less popular these days. However here are the advantages and disadvantages:

- You can choose from cooling-only or reverse-cycle (both heating & cooling)
- Quick installation, low-cost upfront
- The whole unit is one complete package
- Renters find them useful, as you can take it when you move house
- They are noisy
- Also this system is less efficient that the other types below


An inverter can be used with many of the types of air conditioning listed below. It is a regulator that controls the speed of your air conditioning system's compressor. Therefore it continuously controls the temperature without the ups and downs of normal compressor action. Inverters can be applied to split system, multi-split system, ducted and central air conditioning. Advantages are:
- They save the most energy: from 30 - 50% lower electricity bill
- Greater comfort throughout the home
- Reach desired temperature faster
- Less noise
- Long life of the parts
- A bit more expensive than other systems. However with a payback time of about 2 years and lower running costs, a very worthwhile investment.


Similar to the split system above, however it is one system covering multiple rooms. Benefits:
- It can heat or cool all the rooms at once, but with each room's temperature being independently controlled
- Cooling-only or reverse cycle available
- Only heat or cool rooms that you need at any one time
- Economical running cost
- It's a good option in houses that are too small for ducted air conditioning


Cassette air conditioners are flat units that sit flush on your ceiling or wall. Otherwise they work the same as split systems. Benefits are:
- You can install cassettes on the ceiling if you don't have wall space available for other types of systems
- They are very suitable for heating and cooling large living areas
- They've got a great cooling capacity


This system is called 'split' because the evaporator and fan are mounted indoors while the compressor and the condenser are located outside the building. The features of this system are:
- It can be cooling-only or reverse-cycle (both heating & cooling)
- Can heat or cool one room as needed
- Each room can have its own unit
- Compactness of size, space-saving
- Does not require a hole to be cut in the wall
- Temperature, timer and humidity can be controlled by remote


Ducting is one system for the entire building. Flexible ducting in the ceiling or under the floor carries the conditioned air throughout the house via vents in each room. The compressor and condenser are located outside. The features of this system are:
- Heat or cool the whole house or just selected rooms
- Highest upfront costs
- Best installed during the building of your house or business premises
- Long term cost saving
- Visually elegant - nothing protruding from the walls or ceilings inside
- Less noisy
- It will increase the resale value of your property
- Powerful, efficient and flexible


- The most practical and economical for very large spaces
- The noisy compressor and condenser units are placed outside.
- Heating and cooling are combined by coupling the evaporator and furnace outside
- The ducting throughout the building thus carries both heating and cooling

Tips to improve economy of your air conditioning

- Insulate your house, or upgrade the existing insulation to a more effective type.
- If you are building anew, investigate designs that use passive temperature control. This means the building itself works with the ambient environment, without using any energy.
- Choose trees that can be planted in just the right places to cast shade in summer and allow the sun through in winter. Alternately, patios with slatted roofs can be covered with deciduous vines on the north side of the house. The leaves cool the front wall in summer. And in winter there are no leaves so the sun comes in.
- Learn which direction the prevailing wind comes from in summer. Then install a pond or waterfall upwind of the house so the water cools the breeze.
- Use slatted lattices, bamboo screens or awnings on the sides of the house that get hottest.