What size multi-split air conditioner is best for my home in Hervey Bay?
You must first size each inside unit separately, then compare it to the capacity of an outside unit to get the ideal multi-split system air conditioner size for your Hervey Bay, Queensland property. With multi-split systems, you may use a single outdoor compressor to power two to six indoor units. For houses with several rooms that require cooling at various times, this is perfect.
| ✅ Step 1: Size Each Indoor Unit (Per Room) | ||
|---|---|---|
| Room Type | Typical Size (m²) | Indoor Unit Capacity |
| Bedroom | 10–20m² | 2.5 kW |
| Small Living Room | 20–30m² | 3.5 kW |
| Large Living Room | 30–45m² | 5.0–6.0 kW |
| Open Plan Area | 45–65m² | 7.0–8.0 kW |
| ✅ Step 2: Choose the Right Outdoor Unit | ||
|---|---|---|
| No. of Indoor Units | Typical Combined kW | Outdoor Unit Size |
| 2 units | ~5–6 kW | 5.2–6.8 kW |
| 3 units | ~8–10 kW | 7.0–9.0 kW |
| 4–5 units | ~10–14 kW | 10–12.5 kW |
🏡 Example for a 3-bedroom Hervey bay Home
- Master bedroom – 2.5 kW
- 2 other bedrooms – 2.5 kW each
- Living room – 5.0 kW
Total indoor capacity: 12.5 kW
Recommended outdoor unit: ~10–11 kW
🌿 Hervey Bay Considerations
- High humidity: Choose systems with good dehumidification settings.
- Energy efficiency: Go for inverter tech and zoned control (some brands support smart zoning).
- Quiet operation: Important for bedrooms and warm nights.
👷 Recommendation
Get a professional assessment to ensure the outdoor unit has the right diversity factor and pipe lengths for your layout. Brands like Mitsubishi Electric, Daikin, Fujitsu, and Panasonic have reliable multi-split ranges.
If you tell us:
- Number of rooms
- Room sizes
- Ceiling height
- Orientation (north, west, etc.)
📌 Note: We can estimate the exact indoor and outdoor sizing for your setup.
Fujitsu General Multi Systems, an alternative to entire home ducted systems, enables the installation of separate units in several rooms with a single small outdoor unit. An excellent choice in situations when access to the ceiling cavity space may be limited.
Key Features
Space Saving
Connect up to six indoor units to one compact outdoor unit, saving space along the external walls of the home and eliminating the need to install multiple outdoor units for each indoor unit.
Individual Room Temperature Control
Each indoor unit can be independently temperature controlled using individual remotes to provide indoor comfort where and when it is needed.
Central Controller Option
Each indoor unit can be monitored simultaneously with the optional large backlit LCD central controller available on 5 and 6-room multi systems. The four-way navigation pad enables control and monitoring of features from one central point.
