Split system air conditioning installation offers Brisbane homeowners efficient and flexible cooling and heating solutions. Split systems cool or heat specific rooms or spaces, making them ideal for targeting comfort where you need it most.

These systems are energy-efficient and offer reliable temperature control in individual areas. Their features make them a versatile option for homes and offices alike.

In this article, we’ll help you make an informed decision regarding split system air conditioning installation. Read on to discover 12 things you can’t ignore when installing these systems.

Jump to:

Room Size and Unit Capacity
Energy Efficiency Ratings
Installation Location of Indoor and Outdoor Units
Climate and Room Insulation
Noise Levels
Additional Features and Technology
Additional Electrical Wiring
Installation Costs
Maintenance Requirements
Aesthetic of Units
Budget and Long-Term Costs
Professional Installers
Conclusion

1. Room Size and Unit Capacity

Choosing the correct unit capacity for your split system air conditioner results in efficient performance and energy use. The capacity, measured in kilowatts (kW), must match your room’s size so that the system can cool or heat the space effectively.

An undersized unit will struggle to maintain the desired temperature. This leads to:

• Continuous operation
• Increased energy consumption
• Higher electricity bills

On the other hand, an oversized unit will cool or heat the room too quickly, causing the system to cycle on and off frequently. This leads to:

• Inefficient operation
• Uneven temperatures
• Additional wear and tear

Here’s a general guide for selecting a split system unit based on room size:

Always consult with a professional installer. We can help you choose the best capacity for your specific space.

2. Energy Efficiency Ratings

Energy efficiency ratings are important when installing a split system air conditioner. They show how efficiently the unit uses power to cool or heat a space.

In Australia, these ratings are displayed on an energy label with star ratings (ranging from 1 to 10 stars). The more stars a unit has, the more energy-efficient it is, meaning it consumes less electricity and costs less to run.

Inverter Technology

Many energy-efficient split systems use inverter technology. This feature adjusts the compressor speed according to the room’s temperature needs.

Unlike standard units that operate at a fixed speed, inverter models can increase or decrease their output as needed. You benefit from smoother temperature control and reduced energy consumption.

Inverter systems are more efficient with less wear and tear, as the unit doesn’t need to frequently turn on and off.

Long-Term Cost Savings

Opting for a model with a higher energy efficiency rating, particularly one with inverter technology, can mean long-term savings on electricity bills. Although energy-efficient units may have a higher initial cost, the savings on monthly power costs can offset this over time.

3. Installation Location of Indoor and Outdoor Units

Identifying the best position for the indoor and outdoor units helps with optimal performance, efficient airflow, and ease of maintenance.

Indoor Unit Placement

The indoor unit should be installed to allow for even airflow throughout the room. Mount the unit high on a wall, as this helps conditioned air circulate evenly and cools or heats the space more effectively.

Avoid placing the unit near direct sunlight, windows, or heat sources. These can force the system to work harder to maintain the desired temperature. Placing the indoor unit near areas where people frequently sit can also help maximise comfort.

Outdoor Unit Placement

The outdoor unit needs a well-ventilated area for proper airflow and heat dissipation. A stable surface away from direct sunlight and rain exposure is ideal. 

Avoid enclosed areas or tight spaces, and don’t obstruct the unit with items like toolboxes. Restricting airflow can reduce efficiency. The outdoor unit should also be easily accessible for maintenance and cleaning. 

Proper positioning of both units allows for efficient cooling and heating. Always consult a professional installer so your system is set up for maximum comfort and durability.

4. Climate and Room Insulation

The local climate and level of insulation in your home play a role in split system air conditioner installation.

Climate Considerations

The climate in your area affects how hard your air conditioner needs to work. In hot and humid regions like Brisbane, you may need a more powerful unit to cool the space effectively.

You may not need to worry too much about the heating capacity for our mild winters. However, our older customers appreciate reliable heating functions in the cooler months.

Understanding the demands of your climate helps you select a unit that meets your cooling and heating needs without overloading the system.

Room Insulation

The level of insulation in your room also impacts the unit’s efficiency. Well-insulated rooms retain cool air in summer and warm air in winter, reducing the energy needed to maintain a comfortable temperature.

Insulation in walls, ceilings, and windows helps prevent heat transfer. This means your system can run less frequently at lower power.

Poor insulation forces the unit to work harder, which increases energy consumption and costs. The experts at Russell Air can assess your home and help you make the best choice.

5. Noise Levels

Consider the noise levels of the indoor and outdoor units. Many air conditioners display their noise levels in decibels (dB) on the product label, so you can compare units based on their operational sound.

A system with lower decibel ratings causes less disruption in bedrooms, offices, or living areas.

The placement of the indoor and outdoor units can also influence noise levels. Installing the indoor unit away from beds, desks, or seating areas can help reduce audible sound during operation.

Similarly, positioning the outdoor unit away from windows or close to neighbours can minimise noise disturbance, especially at night. Mounting the outdoor unit on a stable surface can also prevent excess vibration, which can contribute to noise.

6. Additional Features and Technology

Modern split system air conditioners offer a range of advanced features for convenience, efficiency, and comfort. Here are some popular ones:

• Wi-Fi Control – Manage your air conditioner remotely through a smartphone app. This feature is especially useful for adjusting settings before you arrive home, ensuring a comfortable temperature upon arrival.
• Timers – Program your system to turn on or off at specific times, helping you save energy by only running the unit when needed.
• Air Filtration – Many split systems now come with built-in air filtration, such as HEPA filters or ionisers, which help remove dust, allergens, and pollutants from the air. This is particularly valuable for individuals with allergies or asthma, as it improves indoor air quality.
• Smart Compatibility – Some models are compatible with smart home systems, letting you manage your air conditioning with Google Assistant or Amazon Alexa for added convenience.
• Sleep Mode – Optimises the temperature for overnight comfort and gradually adjusts settings to conserve energy. This feature makes it easier to maintain a comfortable sleeping environment and reduces energy consumption during the night.

7. Additional Electrical Wiring

Sometimes, an installer may need to add more electrical wiring. For instance, running extra cabling in the roof space to the optimal location for your split system.

Additional electrical work will cost more than a standard install. However, reputable companies like Russel Air will always communicate these charges upfront.

The installer might also need to add a dedicated circuit for the air conditioning. We typically install split systems without this additional work, but it helps to be aware of it.

8. Installation Costs

The cost of installing a split system air conditioner can vary based on several factors like:

• Brand
• System size
• Work complexity

Installing a split system air conditioner in Brisbane costs about $1650 to $4200, including supply and installation costs. Popular brands we install are:

• Mitsubishi Electric
• Fujitsu
• Haier

Additional Costs for Complex Installations

• Longer Pipe Runs – If the outdoor unit needs to be placed far from the indoor unit, additional refrigerant piping may be required.
• Roof or High Wall Mounting – Situations where the outdoor unit needs to be mounted on a roof or external wall for stability and ventilation require extra brackets and labour.
• Electrical Upgrades – Some installations may require an upgrade to your circuit breaker or dedicated wiring for the unit.
• Multi-Unit Installations – Homes may require multiple split system units for different rooms.

9. Maintenance Requirements

Maintaining a split system air conditioner is essential for its efficiency and longevity. Regular servicing helps the unit run smoothly, reduces energy consumption, and extends the lifespan.

Here’s what a typical service involves and why it’s so important:

• Filter Cleaning – Wiping or replacing filters every few months is one of the most vital maintenance tasks. Dirty filters restrict airflow, making the unit work harder and consume more energy. Regularly cleaning the filters improves air quality and ensures efficient operation.
• Coil Cleaning – The evaporator and condenser coils accumulate dust and debris over time, affecting heat exchange and overall performance. Expert technicians clean these coils during servicing to maintain efficient cooling and heating.
• Checking Refrigerant Levels – Low refrigerant levels can reduce cooling efficiency and damage the compressor. A trained technician will check and refill refrigerant as needed, ensuring the system performs at its best. Please don’t try this yourself.
• Inspecting Components – Regular servicing includes inspecting electrical connections, fans, and thermostats to prevent potential electrical issues. Ensuring these parts are in good condition can prevent breakdowns and costly repairs.
• Drain Line Cleaning – A clogged drain line can cause water to back up, leading to leaks and water damage. Technicians clear the drain line to prevent this.

Routine servicing keeps your split system air conditioner working efficiently, reducing power bills. Regular maintenance also helps detect minor issues before they become major repairs.

We recommend getting your unit serviced at least once a year, preferably before summer. This keeps it in top condition and ensures reliable performance year-round.

10. Aesthetic of Units

You may want to consider how the indoor unit will blend with your room’s design. Since the indoor unit is mounted on a wall, it becomes a visible part of the space. Choosing a unit with a design that complements your room’s décor can help minimise its visual impact and maintain a cohesive look.

Many split systems have sleek, modern designs that match or complement a variety of colour schemes and styles. Additionally, positioning the unit on a wall that draws less attention, such as above eye level or away from the centre of the room, can reduce its visual prominence.

11. Budget and Long-Term Costs

Considering the initial purchase and installation costs as well as the long-term operating expenses is a good idea when installing a split system. Our upfront costs include the price of the unit and the installation fee.

Split systems are cheaper to install than ducted air con. The running costs are also generally cheaper because you target individual spaces instead of the entire home.

Split systems are:

• Energy efficient
• Cost less to run
• Easier to install
• Give you flexibility
• Simpler to maintain

12. Professional Installers

Hiring licensed and trained professionals to install your split system air conditioning is crucial for several reasons. A qualified installer ensures that the unit is:

• Mounted correctly
• Connected safely
• Positioned optimally

Proper installation is vital for the unit’s performance and maintaining the manufacturer’s warranty. Many warranties are only valid when a qualified technician instals the unit.

Also, installing air conditioning without the required qualifications and licensing is illegal in QLD.

Conclusion

Don’t ignore these 12 things when getting split system air conditioning installed. The experts at Russell Air can advise you on each point and help you find the best system for your needs.

Split systems are easy to install compared to ducted systems. They’re perfect if you want a cost-effective solution for individual areas in your home.

Are you considering installing split system air conditioning in your home or office?

Contact us today for help choosing the best split system for your unique needs.