The Complete Guide to Air Conditioning Installation in Boronia and Melbourne's Eastern Suburbs

Expert advice on air conditioning installation in Boronia and Melbourne's eastern suburbs, including system sizing, energy efficiency, installation costs and choosing the right system for your home.

R & S Hamilton Heating & Air Conditioning

5 min read

Installing a new air conditioning system is one of the most significant home comfort decisions you will make. Get it right and you will enjoy reliable, energy efficient cooling for 15 years or more. Get it wrong and you could be left with an undersized system, sky high energy bills, or a unit that struggles through Melbourne's hottest summers.

This guide covers everything homeowners across Boronia and Melbourne's eastern suburbs need to know before booking an air conditioning installation — from choosing the right system type to understanding what happens on installation day and beyond.

What Type of Air Conditioning System Do You Need?

The first decision is which type of system suits your home. There are two main options for Melbourne homeowners:

Wall Mounted Split System Air Conditioning

A split system is the most popular choice for homes across Boronia, Boronia Heights, Bayswater, Knox, and the wider eastern suburbs. It consists of an indoor unit mounted on the wall and an outdoor condenser unit, connected by refrigerant pipes.

Wall mounted split systems are ideal for cooling individual rooms or open plan living areas. They are relatively affordable to purchase and install, energy efficient, and available in a wide range of sizes to suit different room dimensions. Most modern split systems also provide heating as well as cooling, making them a year-round comfort solution.

Ducted Refrigerated Reverse Cycle Split Systems

Ducted systems distribute cool air through a network of ducts and vents installed in the ceiling throughout the home. A single outdoor unit powers the entire system, allowing you to cool every room from one central controller.

Ducted air conditioning is the premium option for whole home cooling. It is more expensive to purchase and install than a split system but offers a cleaner aesthetic with no wall mounted units visible in each room. For larger homes across Wantirna, Ringwood, and Ferntree Gully where whole home cooling is a priority, ducted is often the preferred choice.

Refrigerated cooling systems actively remove heat from the air rather than simply moving it around. Reverse cycle systems provide both heating and cooling from a single unit, offering year-round comfort and excellent energy efficiency.

If you are unsure which system type suits your home, our team at R & S Hamilton can assess your property and provide honest advice before you commit to anything. Get in touch with us here.

Choosing the Right Size System

Choosing the correct capacity for your air conditioning system is one of the most important decisions in the installation process and one that is frequently underestimated.

A system that is too small will struggle to cool your home on Melbourne's hottest days, running constantly and wearing out faster. A system that is too large will cool the room quickly but be oversized in fan capacity and therefore will be too intrusive due to loud air flow noise, reducing efficiency and comfort.

Capacity is measured in kilowatts and is determined by a combination of factors including:

The size of the room or home in square metres
Ceiling height
The number and size of windows, particularly north and west facing windows
Insulation quality
The number of people regularly occupying the space
Whether the space is shaded or exposed to direct sun

For a standard bedroom in Boronia, a 2.5kW to 3.5kW split system is typically sufficient. A large open plan living area may require a 5kW to 7kW system. Whole home ducted installations are sized based on a full load calculation across all zones.

Our licensed technicians at R & S Hamilton carry out a proper assessment before recommending a system size, ensuring you get the right capacity for your specific home rather than a generic recommendation. Learn more about our cooling installation and repair services.

What Brands Are Worth Considering?

The air conditioning market has a wide range of brands at varying price points. The most reliable and widely used brands in the Australian market include Daikin, Mitsubishi, Fujitsu, Panasonic, and Samsung.

Japanese and Australian market brands tend to offer better reliability and after sales support than cheaper alternatives and are better suited to Australia's climate conditions. A higher quality unit will typically cost more upfront but last longer, require fewer repairs, and perform more efficiently.

When choosing a brand, consider:

Energy star rating — the more stars the lower the running cost
Warranty terms — most quality brands offer 5-year warranties on parts and compressor
Availability of local service agents for ongoing maintenance and repairs

What Does Air Conditioning Installation Involve?

Understanding what happens on installation day helps you prepare and ensures there are no surprises. Here is a typical split system installation process:

Assessment and planning — before the installation day our technician will assess the best location for the indoor and outdoor units, check the electrical supply, confirm the outlet size and location, return air size and location and controller location.

Indoor unit mounting — the indoor unit is mounted on the wall at the agreed location. The position is important for effective air distribution.

Outdoor unit placement — the outdoor condenser is positioned on a flat surface or wall bracket outside. Good airflow around the outdoor unit is essential for efficiency so placement matters.

Electrical connection — the system is wired to a dedicated circuit on your switchboard. All electrical work is carried out by our licensed technicians in compliance with Australian standards.

Testing and commissioning — once installed the system is tested across all modes including cooling and heating to confirm it is operating correctly before we leave.

A standard split system installation typically takes four to six hours. Ducted installations are more involved and may take one to two days depending on the size of the home.

How Much Does Air Conditioning Installation Cost in Melbourne?

Costs vary significantly depending on the system type, brand, capacity, and the complexity of the installation. As a general guide for the eastern suburbs:

Wall split system supply and installation — typically ranges from $2,000 to $2,500 for a standard bedroom including installation, labour and electrical connection.

Ducted split system supply and installation — typically ranges from $8,000 to $15,000 or more for a whole home system depending on the number of zones and ducting complexity.

These are indicative ranges only. The best way to get an accurate price for your specific home is to contact us for a quote. Reach out to our team at R & S Hamilton today and we will provide an honest, no obligation assessment.

How Long Does an Air Conditioning System Last?

A quality air conditioning system that is properly installed and regularly serviced should last 12 to 15 years. Some systems last considerably longer with good maintenance.

The biggest factors affecting lifespan are:

Quality of the installation — a poorly installed system works harder and wears out faster
Annual servicing — regular maintenance keeps the system running efficiently and catches small issues before they become expensive repairs
Usage patterns — systems that run constantly in extreme heat have shorter lifespans than those used moderately

We recommend an annual service for all air conditioning systems across Melbourne's eastern suburbs. Our cooling installation and repair team provides full servicing and maintenance to keep your system running at its best for as long as possible.

Suburbs We Service

R & S Hamilton provides professional air conditioning installation across all of Melbourne's eastern suburbs and metropolitan Melbourne, including Boronia, Bayswater, Knox, Wantirna, Ferntree Gully, Ringwood, Croydon, Watsonia, Rowville, and all surrounding areas.

Ready to Install Air Conditioning in Your Home?

Whether you are installing air conditioning for the first time or replacing an ageing system, R & S Hamilton has been helping homeowners across Boronia and Melbourne's eastern suburbs stay comfortable since 1975.

Our licensed and insured technicians provide honest advice, quality installations, and ongoing support to ensure your system performs at its best for years to come.

Contact our team today to discuss your options or book a free assessment.

For a full overview of our heating, cooling, and air conditioning services visit our services page.

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