Ducted Air Conditioner Sizes

What size ducted air conditioner is best for my home in Hervey Bay?

In order to choose the ideal ducted air conditioner size for your Hervey Bay home (which has a warm, humid subtropical climate) you must take into account a number of criteria, such as the height of the ceiling, the size of the room zones, insulation, exposure to the sun, and windows.

🧮 Quick Ducted Air Conditioner Sizing Guide
Home Size (m²)	Suggested System Capacity
100–150 m² – Small Home	10–12 kW
150–200 m² – Small to Medium Home	12–14 kW
200–250 m² – Large Home	14–16 kW
250–300 m² – Large Home, 5+ bedrooms	16–18+ kW

📌 Note: This is a general guide. Accurate sizing requires a heat load calculation.

🔍 Key Factors That Influence Sizing

Total floor area (especially open plan vs closed rooms)
Ceiling height (higher ceilings = more air volume)
Insulation quality (roof/walls/windows)
Window size & orientation (especially north/west-facing)
Number of zones (e.g., bedrooms vs living areas)
Occupancy & internal heat sources (people, appliances, lighting)

🏡 Example
For a typical 4-bedroom single-storey house on the Sunshine Coast:

Floor area: ~180–220 m²
Moderate insulation & ceiling height
Needs a ducted system around 14–16 kW

✅ Recommendations
Use zoning: Helps cool only what’s needed, saving power.

Choose inverter models: More efficient and quieter.
Install correctly: Poor ducting or oversized units waste energy and reduce comfort.
Professional heat load assessment: Always best for precision.

Want help estimating your exact ducted air conditioner needs?
Send us:

Total house area in m²
Ceiling height
Number of bedrooms/zones
Insulation quality (poor, average, good)
Approximate window sizes/orientation

…and we will give you a more specific kW recommendation.

✅ Fujitsu Ducted Air Conditioners
Type	Ducted System
Available in	8.0kW, 10.0kW, 11.2kW, 9.5kW, 12.5kW, 14.0kW, 15.0kW, 15.5kW, 16.5kW, 18.0kW, 11.2kW Cooling Only – 7.1kW, 8.5kW, 10.0kW, 12.5kW, 14.0kW, 15.5kW, 16.0kW
Refrigerant	R32