Comparing Costs, Efficiency and Comfort for Your Brisbane Home
Choosing between ducted and split system air conditioning is one of the biggest decisions Brisbane homeowners face. Both have clear advantages and the right choice depends on your home layout, budget and cooling needs. For homeowners in North Lakes, Redcliffe, Mango Hill and Chermside, this guide compares everything you need to know.
Quick Comparison: Ducted vs Split System
| Factor | Split System | Ducted System |
|---|---|---|
| Best for | 1-3 rooms | Whole home (4+ rooms) |
| Installation cost | $1,800 – $4,500 | $8,000 – $18,000+ |
| Running cost | Lower (cools less area) | Higher (but zone control helps) |
| Aesthetics | Visible wall unit | Hidden in ceiling (discreet) |
| Zone control | Per-unit only | Multiple zones |
| Noise | Low to moderate | Very quiet indoors |
| Installation time | Half day to one day | 1-3 days |
| Heating | Reverse cycle available | Reverse cycle available |
When Is a Split System the Better Choice?
Split systems are ideal when you only need to cool one to three rooms. They are significantly cheaper to install and run, and modern split systems are quiet, energy-efficient and available in sizes from 2.5kW to 9kW+.
Split systems work well for:
- Master bedrooms and living rooms
- Home offices
- Apartments and townhouses
- Homes where only specific rooms need cooling
- Budget-conscious installations
When Is Ducted Air Conditioning the Better Choice?
Ducted systems are the better option when you want whole-home cooling with a clean, discreet look. The indoor unit sits in the ceiling and cooled air is distributed through ducts to vents in each room. Zone control lets you cool only the rooms you are using.
Ducted systems work well for:
- Larger homes (4+ bedrooms)
- Open-plan living areas
- New builds and major renovations
- Homes where wall-mounted units are not aesthetically acceptable
- Families wanting consistent whole-home comfort
Installation Costs in Brisbane
| System Type | Typical Cost Range (AUD) |
|---|---|
| Small split system (2.5kW – 3.5kW) | $1,800 – $3,000 |
| Medium split system (5kW – 7kW) | $2,500 – $4,500 |
| Large split system (7kW+) | $3,500 – $5,500+ |
| Multi-head split system | $4,500 – $9,000+ |
| Ducted air conditioning | $8,000 – $18,000+ |
| Electrical circuit for AC | $250 – $500 |
| Switchboard upgrade (if needed) | $800 – $3,500 |
Both systems require electrical work by a licensed electrician, including dedicated circuits, isolator switches and potentially a switchboard upgrade. Connex Electrical handles the full electrical side of air conditioning installation.
Running Cost Comparison
A 5kW split system cooling one room costs roughly $0.30 to $0.50 per hour to run. A ducted system cooling an entire home costs $1.00 to $2.50 per hour, but with zone control you can reduce this by only cooling occupied rooms.
Using ceiling fans alongside either system lets you set the thermostat 2-3 degrees higher while maintaining comfort, reducing running costs by 20 to 30 percent.
What About Multi-Head Split Systems?
Multi-head systems connect multiple indoor units to one outdoor unit. They offer a middle ground between individual splits and full ducted — you get zoned cooling in several rooms without ceiling ductwork. However, they are more complex to install and can be less efficient than dedicated single-split units.
Which System Adds More Value to Your Home?
Ducted air conditioning generally adds more resale value because buyers perceive it as a premium feature. However, well-placed split systems in key rooms (master bedroom and living area) also add value at a fraction of the cost. For newer homes in Griffin, Murrumba Downs and Kallangur, ducted is increasingly expected as standard.
Areas We Service Across Brisbane and North Brisbane
Connex Electrical provides expert electrical services across Brisbane and North Brisbane, including:
- North Lakes
- Redcliffe
- Mango Hill
- Griffin
- Kallangur
- Burpengary
- Morayfield
- Caboolture
- Chermside
- Aspley
- Everton Park
- Stafford
- Wavell Heights
- Murrumba Downs
- Rothwell
- Deception Bay
- Petrie
- Lawnton
- Strathpine
- Brendale
- Albany Creek
- Eatons Hill
- Warner
Our Full Range of Electrical Services
- Switchboard Upgrades
- Emergency Electrician
- Air Conditioning Installation
- Electrical Safety Inspections
- Surge Protection
- EV Charger Installation
- LED Lighting Installation
- Ceiling Fan Installation
- Smoke Alarm Installation
- Powerpoint Installation
- Residential Electrician
- Commercial Electrician
- Data Cabling
Need Help Choosing?
Connex Electrical can assess your home and recommend the right system for your layout, budget and comfort needs.
Call 0474 207 609 or visit our contact page to book a quote.
Frequently Asked Questions
Is ducted air conditioning worth the cost?
For homes with 4+ bedrooms where whole-home comfort is a priority, ducted air conditioning is usually worth the investment, especially with zone control to manage running costs.
How much does a split system cost to install in Brisbane?
Most split system installations cost between $1,800 and $4,500 depending on the size and complexity of the installation.
Can I add ducted air conditioning to an existing home?
Yes, but it requires ceiling space for ductwork. A site inspection will determine if your home is suitable.
Which system is more energy efficient?
Split systems are more efficient for cooling individual rooms. Ducted systems with zone control can be efficient for whole-home cooling when managed properly.
Do I need an electrician for air conditioning installation?
Yes. Both split and ducted systems require dedicated electrical circuits, isolator switches and potentially switchboard upgrades.
Need this done in your suburb? Connex Electrical services all North Brisbane and Moreton Bay suburbs including McDowall · Petrie · Scarborough.
Learn more about our Air Conditioning Installation services → | All suburbs we service
Call 0474 207 609 for a free quote.
Our Electrical Services
Air Conditioning Installation · Ceiling Fan Installation · Switchboard Upgrades · Smoke Alarm Installation · Powerpoint Installation · LED Lighting Installation · Electrical Maintenance · Electrical Safety Inspections · EV Charger Installation · Emergency Electrician · Commercial Electrician · Data Cabling · Surge Protection
Areas We Service
Electrician North Lakes · Electrician Redcliffe · Electrician Chermside · Electrician Caboolture · Electrician Morayfield · Electrician Burpengary · Electrician Narangba · Electrician Kallangur · Electrician Mango Hill · Electrician Griffin · Electrician Dakabin · Electrician Petrie · Electrician Lawnton · Electrician Deception Bay · Electrician Rothwell · Electrician Kippa-Ring · Electrician Margate · Electrician Clontarf · Electrician Scarborough · Electrician Woody Point · Electrician Bridgeman Downs · Electrician Murrumba Downs · Electrician Aspley
Industry Resources
- QBCC — Queensland Building and Construction Commission
- Energex — SE Queensland Electricity
- Electrical Safety Office Queensland
Need an electrician? Call Connex Electrical on 0474 207 609 for a free quote.