Fujitsu | 2.5kW Reverse Cycle Split System | R32 Comfort Range
The Fujitsu ASTH09KNCA-SET is a 2.5kW reverse cycle split system air conditioner rated for 240V single-phase operation, delivering both heating and cooling for year-round climate control. The ASTH09KNCA-SET combines compact design with energy-efficient inverter technology, achieving a Coefficient of Performance (COP) of 4.16 for heating and Energy Efficiency Ratio (EER) of 4.24 for cooling.
Homeowners and builders often struggle to find a split system that balances compact dimensions with meaningful heating output without sacrificing affordability. The ASTH09KNCA-SET addresses this gap with 3.2kW heating capacity and 2.5kW cooling, making it suited to medium-sized rooms and open-plan spaces where a single indoor unit serves the primary living area. The wall-mounted indoor unit measures just 784mm wide by 270mm high, fitting comfortably above furniture or in confined wall spaces where larger units would dominate the room.
Trade installers value the ASTH09KNCA-SET for retrofit and new-build work because it covers a wide operating range: cooling from –10°C to 50°C and heating down to –15°C, meaning the unit functions in most Australian climates without derating. The i-PAM inverter technology reduces compressor speed at part load, lowering energy consumption during mild weather when full cooling or heating output is unnecessary. Installers can specify the ASTH09KNCA-SET with confidence for residential jobs where energy bills matter to the end user, and the 5-year manufacturer warranty provides straightforward coverage and in-home servicing through authorized dealers.
Features
- All DC inverter compressor — i-PAM inverter technology reduces electrical losses and cuts power consumption compared to fixed-speed compressors, delivering part-load efficiency of 4.16 COP heating and 4.24 EER cooling.
- Heating capacity down to –15°C — the ASTH09KNCA-SET continues heating in cold climates where many low-capacity units derating significantly, suited to mountain and inland regions with winter frost.
- Cooling capacity from –10°C operation — a rare feature for compact units, allowing installation in spaces that require heat pump function year-round without thermal risk.
- Compact wall-mounted indoor unit — 784mm wide by 270mm high by 224mm deep, fitting into confined spaces without the visual bulk of larger split systems.
- Blue fin heat exchanger on outdoor unit — corrosion-resistant treatment prevents salt and humidity damage in coastal and humid climates, extending equipment life.
- Automatic louvre and swing function — directional airflow adjusts automatically with operating mode, or manual control via remote; prevents stratification and improves comfort distribution.
- Low noise operation — 22dBA on quiet mode (indoor) and 49dBA outdoor unit noise, suitable for bedrooms and open-plan living without acoustic disruption.
- Sleep timer and economy mode — gradual temperature setdown for sleep comfort and suppressed-power-consumption mode to manage running costs during off-peak hours.
- Auto restart after power loss — the unit automatically resumes operation in the previous mode after temporary power interruption, eliminating manual reset.
- R32 refrigerant — low-GWP (Global Warming Potential) refrigerant compliant with current environmental regulations and future-proofed against refrigerant phase-outs.
- Demand response compatible — the ASTH09KNCA-SET integrates with Air Conditioning Demand Response programs allowing utilities to manage load during peak demand without user intervention.
- 5-year manufacturer warranty — covers compressor, components, and labour for in-home servicing through Fujitsu authorized dealers, no call-out fees during warranty period.
Where to use
- Medium-sized bedrooms — the ASTH09KNCA-SET delivers 2.5kW cooling and 3.2kW heating to bring a 15–20m² bedroom from cold to comfort quickly without over-capacity noise or short-cycling.
- Open-plan kitchen and living areas — combined cooling and heating suits renovation projects where a single zone serves kitchen, dining, and lounge, common in modern residential layouts.
- Home offices and studies — heating to –15°C means the office stays comfortable during winter work-from-home shifts without supplementary space heaters running up electricity bills.
- Rental and investment properties — the compact size and straightforward controls make the ASTH09KNCA-SET popular for rental properties where tenant familiarity with operation is important, and the warranty provides landlord peace of mind.
- Coastal and humid climates — blue fin treatment protects the outdoor unit from salt spray and salt-laden air, making the ASTH09KNCA-SET suited to beachside homes without accelerated corrosion.
- Cold-climate regions — heating operation down to –15°C means the ASTH09KNCA-SET works where alpine and inland properties experience winter frost without capacity loss or compressor cycling strain.
- Renovation and retrofit work — the compact indoor unit (784mm wide) fits existing wall spaces without major structural changes, lowering installation cost on older homes.
The ASTH09KNCA-SET is not suitable for high-capacity whole-house cooling or heating on properties larger than 25m² in open-plan layouts. Do not install the ASTH09KNCA-SET as the sole cooling source in applications requiring dehumidification below 1 litre per hour, or in spaces with continuous high moisture generation (commercial kitchens, industrial laundries). The unit is not weatherproof and must not be installed outdoors or in unprotected exterior locations.
Verified Sparky Direct customer reviews: Fujitsu ASTH09KNCA-SET (ASTH09KNCA-SET)
"We couldn't be happier with the new ones." — Steve
"Great product - great company - great service." — Rob B
"Great unit. Compact, Quiet. Easy to operate!" — Geoff B
| Indoor unit |
ASTH09KNCA |
| Outdoor unit |
AOTH09KNCA |
| Operation Type |
Reverse Cycle |
| Power Source V/Ph/Hz |
230 / 1 / 50 |
| Cooling Capacity kW (Rated (Min - Max)) |
2.50 (0.9 - 3.7) |
| Heating Capacity kW (Rated (Min - Max)) |
3.20 (0.9 - 4.8) |
| Input Power Cooling kW (Rated (Min - Max)) |
0.59 (0.25 - 1.14) |
| Input Power Heating kW (Rated (Min - Max)) |
0.77 (0.25 - 1.6) |
| EER Cooling kW/kW |
4.24 |
| COP Heating kW/kW |
4.16 |
| Star Rating Cooling (0-10) (Hot / Average / Cold) |
5 / 4.5 / 4.5 |
| Star Rating Heating (0-10) (Hot / Average / Cold) |
3.5 / 3 / 2.5 |
| Total Cooling Seasonal Performance Factor Residential kW (Hot / Average / Cold) |
6.535 / 6.114 / 6.476 |
| Heating Seasonal Performance Factor Residential kW (Hot / Average / Cold) |
5.235 / 4.625 / 4.005 |
| Total Cooling Seasonal Performance Factor Commercial kW (Hot / Average / Cold) |
7.49 / 8.084 / 9.563 |
| Heating Seasonal Performance Factor Commercial kW (Hot / Average / Cold) |
5.244 / 4.875 / 4.339 |
| Running Current amps (Cooling / Heating) |
3 / 3.8 |
| Moisture Removal l/hr |
1 |
| Indoor Sound Pressure Cooling dBA (High / Quiet) |
46 / 22 |
| Indoor Sound Pressure Heating dBA (High / Quiet) |
46 / 27 |
| Outdoor Sound Pressure dBA (Cooling / Heating) |
49 / 51 |
| Outdoor Sound Power dBA |
62 |
| Air Circulation (Indoor - High Fan) Cooling l/sec |
175 |
| Air Circulation (Indoor - High Fan) Heating l/sec |
175 |
| Indoor Unit Dimensions mm (Height x Width x Depth) |
270 x 784 x 224 |
| Indoor Unit Weight kg |
8.00 |
| Outdoor Unit Dimensions mm (Height x Width x Depth) |
541 x 663 x 290 |
| Outdoor Unit Weight kg |
25.00 |
| Piping Connects mm Ø (Liquid / Gas) |
6.35 / 9.52 |
| Pipe Length m (Max (Precharged)) |
20 (15) |
| Max Height Difference m |
15 |
| Operation Range Cooling °CDB (Min to Max) |
-10 to 50 |
| Operation Range Heating °CDB (Min to Max) |
-15 to 24 |
| Refrigerant Type |
R32 |
| Refrigerant Amount g |
590 |
