Advice
Straight answers from the team that does the installs. What systems cost, how they are sized, what the fault codes mean and what changes the price on a real job.
A 3.5 kW air conditioner is typically designed to cool a medium-sized room between 20 and 30 square metres, such as a master bedroom or a small lounge. The exact coverage depends on ceiling height, window orientation, and insulation levels. In a well-insulated modern home, it efficiently manages heat loads, whereas an older weatherboard house might require more capacity for the same area.
16 Sept 2026
Running an air conditioner in Australia typically costs between $0.25 and $0.95 per hour for a split system, while ducted systems range from $1.50 to $4.50 per hour. These figures depend on your electricity tariff, the unit's energy rating, and the local climate. Larger ducted systems in poorly insulated homes will sit at the higher end of this scale.
16 Sept 2026
An air conditioner not blowing cold air is usually caused by restricted airflow, a failed start capacitor, or a refrigerant leak. Start by checking for a blocked return air filter or a tripped circuit breaker in your switchboard. If the outdoor unit is not running or the copper pipes are iced over, the system likely requires a professional [air conditioning repair](/services/air-conditioning-repairs) to address mechanical failure or gas levels.
8 Sept 2026
A smart air conditioner controller allows you to manage your home's climate via a smartphone app or voice command. These devices range from simple Wi-Fi retrofit kits for existing split systems to advanced integrated zone controllers for ducted units. By optimising run times and temperature settings based on occupancy or outdoor conditions, they can significantly reduce energy consumption in Australian climates.
5 Sept 2026
To determine the capacity you need, allow approximately 125W to 150W per square metre for living areas and 100W to 125W for bedrooms. A standard 14 kW to 16 kW ducted system typically covers a four-bedroom home, while a 2.5 kW to 3.5 kW split system suits a single bedroom. These figures vary based on insulation, window area, and your local climate.
4 Sept 2026
A new evaporative cooling installation typically costs between $3,800 and $7,500. For a standard unit replacement, homeowners usually pay between $2,800 and $4,200. These figures include the unit, basic ductwork, and installation labour, but prices vary based on the number of outlets, roof accessibility, and any necessary electrical or plumbing upgrades required for modern compliance.
3 Sept 2026
A ducted reverse cycle air conditioning system typically costs between $10,000 and $25,000 for a standard Australian home. This price range is determined by the unit capacity in kilowatts, the number of zones required, and the complexity of the installation, such as electrical upgrades or difficult roof cavity access in older homes.
30 Aug 2026
Replacing an air conditioning compressor typically costs between $1,500 and $4,500 for a residential system. This range includes the replacement part, specialised labour, and refrigerant recovery. The final price depends on the system capacity, whether it is a single-phase or three-phase unit, and the specific refrigerant required, as older gases are significantly more expensive than modern alternatives.
30 Aug 2026
A reverse cycle air conditioning system typically costs between $2,500 and $20,000 including installation. Small split systems start around $2,000 to $3,500, while whole-home ducted solutions for a standard four-bedroom house usually range from $9,000 to $16,000. These figures vary based on unit capacity, the number of zones required, and the specific electrical requirements of your property.
30 Aug 2026
A Daikin 7.1 kW split system typically costs between $2,600 and $4,100 fully installed. The final price depends on the specific model—such as the Cora or Alira X—and the complexity of your home's layout. Factors like pipe run length, the need for a dedicated electrical circuit, and roof access all influence the total investment for your air conditioning.
30 Aug 2026
Window air conditioning installation typically costs between $600 and $1,200 for a basic unit in an existing window, while a through-the-wall installation can reach $2,500 or more. The final price depends on the unit's cooling capacity, whether structural work is required, and if a dedicated electrical circuit is necessary to meet safety standards for larger capacity models in Australia.
30 Aug 2026
A Daikin ducted air conditioning system typically costs between $9,000 and $22,000 to install in a standard Australian home. Prices for a small 7kW system start around $8,500, while larger 14kW to 16kW systems for four-bedroom homes range from $12,500 to $18,000. High-capacity three-phase systems for large two-storey residences often exceed $20,000 depending on zoning and electrical requirements.
26 Aug 2026
Replacing a residential air conditioning unit in this country typically costs between $3,500 for a split system and $18,000 for a large ducted system. This range includes hardware, labour, and the safe decommissioning of the old unit. Costs vary based on whether you need new pipework, an electrical switchboard upgrade, or structural modifications to accommodate modern, more efficient outdoor units.
22 Aug 2026
A well-maintained ducted air conditioning system typically lasts between 15 and 20 years in most Australian environments. This lifespan depends on the quality of the initial installation, the frequency of professional servicing, and the local climate. Systems located near the coast often see a reduced lifespan of 10 to 12 years due to salt-induced corrosion of components.
22 Aug 2026
For a standard 3 bedroom house in Australia, ducted air conditioning typically costs between $8,000 and $14,000. This price range covers a 10 kW to 12.5 kW system, including installation and basic zoning. Factors such as the number of zones, roof cavity access, electrical switchboard capacity, and the choice between premium or value-tier brands will determine where a specific quote lands.
16 Aug 2026
Air conditioning installation price varies by system type, with split systems typically costing between $600 and $3,500, while ducted systems range from $8,000 to over $25,000. These figures include hardware and standard labour. Total costs are driven by unit capacity, electrical switchboard requirements, roof cavity access, and the complexity of the ductwork or pipe runs required for your specific home layout.
14 Aug 2026
Most Australian homes require between 12 kW and 16 kW for a standard four-bedroom layout, though the exact size depends on floor area, insulation, and orientation. A typical calculation uses 140 to 160 watts per square metre of living space. However, zoning strategies and the specific construction of your roof and walls can significantly shift this requirement up or down.
10 Aug 2026
Reverse cycle air conditioner installation costs typically range from $2,500 for a single split system to over $15,000 for a whole-home ducted solution. Key price drivers include the system kilowatt capacity, the complexity of the electrical work, and the physical constraints of your home roof cavity or wall space. Prices vary based on brand selection and specific zoning requirements.
9 Aug 2026
Air conditioning repair prices in Australia typically range from $180 for an initial diagnostic call-out to over $3,000 for complex compressor replacements. Minor electrical repairs like capacitor swaps usually fall between $300 and $600, while refrigerant leak repairs often cost $500 to $1,500 depending on the gas type. Total costs are driven by part availability, system age, and site access challenges.
9 Aug 2026
A split system should be installed on a wall where the airflow does not blow directly onto the bed, ideally to the side of the sleeping area or above the headboard. It requires at least 150mm of clearance from the ceiling for air intake and should be positioned on an external wall to simplify condensate drainage and pipework.
2 Aug 2026
A standard back-to-back split system installation in Australia typically costs between $600 and $1,100 for labour and basic materials, excluding the unit itself. For a complete supply and install package, expect to pay between $1,400 for a 2.5kW bedroom unit and up to $3,800 for a large 8kW living area system, depending on brand and electrical complexity.
2 Aug 2026
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