The Fujitsu Airstage SET-ASTH18KMTD is a Lifestyle reverse-cycle split-system air conditioner comprising the ASTH18KMTD indoor unit and AOTH18KMTD outdoor unit. Delivering 5.0kW rated cooling and 6.0kW rated heating, it is designed for medium-sized living rooms, larger bedrooms, offices and similar residential or light-commercial spaces.
Its inverter system adjusts output according to changing room conditions, while Human Sensor, Economy and Low Noise modes help maintain comfortable, energy-conscious operation. Optional anywAiR technology enables convenient app-based control through a compatible smart device.
Features
5.0kW rated cooling capacity
6.0kW rated heating capacity
Reverse-cycle inverter operation
All-DC inverter technology
Human Sensor with energy-saving functions
Powerful Mode for rapid temperature adjustment
Economy Mode
Low Noise outdoor-unit mode
Super Quiet indoor operation
Automatic heating and cooling changeover
Automatic airflow adjustment
Automatic vertical and horizontal louvre movement
Double-swing airflow
10°C Heat operation
Sleep, program, weekly and on/off timers
Automatic restart following a power interruption
Demand Response compatible
Washable front panel
Apple-Catechin air filter
Long-life ion deodorisation filter
Blue Fin outdoor heat exchanger
Optional Wi-Fi and wired-controller compatibility
Approved for the Victorian Energy Upgrades program
Indoor & Outdoor
| Specification | Details |
|---|
| Indoor Model | ASTH18KMTD |
| Indoor Dimensions | 280 × 980 × 240mm |
| Indoor Weight | 12.5kg |
| Outdoor Model | AOTH18KMTD |
| Outdoor Dimensions | 716 × 820 × 315mm |
| Outdoor Weight | 41kg |
| Supply Air Flange | Not applicable – wall-mounted indoor unit |
| Return Air Flange | Not applicable – wall-mounted indoor unit |
| Pipe Sizes | 6.35mm liquid / 12.70mm gas |
| Refrigerant | R32 – 1,270g factory charge |
| Cooling Capacity | 1.00–5.00–6.50kW |
| Heating Capacity | 1.05–6.00–8.70kW |
| Air Flow | 283L/s cooling / 286L/s heating at high fan |
| Drain | Not specified in the Lifestyle brochure |
| Power Supply | 220–240V, single-phase, 50Hz |
| Max Current | Not specified in the official brochure |
| Recommended Circuit Breaker | 16A |
Performance Specifications
| Specification | Cooling | Heating |
|---|
| Rated Capacity | 5.00kW | 6.00kW |
| Capacity Range | 1.00–6.50kW | 1.05–8.70kW |
| Rated Input Power | 1.16kW | 1.28kW |
| Input Power Range | 0.24–1.93kW | 0.14–2.75kW |
| Running Current | 5.3A | 5.8A |
| EER / COP | 4.31 | 4.69 |
| Indoor Sound Pressure – High | 46dBA | 46dBA |
| Indoor Sound Pressure – Quiet | 29dBA | 29dBA |
| Outdoor Sound Pressure | 47dBA | 49dBA |
| Outdoor Sound Power | 59dBA | 59dBA |
| Outdoor Operating Range | −10°C to +50°C | −15°C to +24°C |
Seasonal Efficiency
| Climate Zone | Cooling Star Rating | Heating Star Rating | TCSPF | HSPF |
|---|
| Hot | 5.0 | 3.5 | 6.652 | 5.004 |
| Average | 4.5 | 3.0 | 6.300 | 4.676 |
| Cold | 5.0 | 2.5 | 6.726 | 4.181 |
Additional Specifications
| Specification | Details |
|---|
| Moisture Removal | 1.3L/h |
| Maximum Pipe Length | 30m |
| Factory Pre-Charged Pipe Length | 15m |
| Additional Refrigerant Charge | 20g/m beyond 15m |
| Maximum Height Difference | 25m |
| Refrigerant Type | R32 |
| Refrigerant Charge | 1,270g |
| Communication | UART – CN65 and CN75 ports |
| Compressor Control | Inverter |
| Demand Response | Compatible |
| VEU Approval | Approved for the Victorian Energy Upgrades program |
Optional Controls and Accessories
| Model Number | Description | Requirements |
|---|
| UTY-NXT-BOX | anywAiR Technology Wi-Fi Adaptor II | Provides app-based control through a compatible wireless network |
| UTY-RVRY | Kagami wired remote controller | Requires UTY-TWRXZ2 communication kit |
| UTY-RNRYT5 | Backlit wired touch controller | Requires UTY-TWRXZ2 communication kit |
| UTY-RSRYT | Simple wired controller with operating-mode selection | Requires UTY-TWRXZ2 communication kit |
| UTY-RHRYT | Simple wired controller without operating-mode selection | Requires UTY-TWRXZ2 communication kit |
| UTY-TWRXZ2 | Optional communication kit | Required when connecting the compatible wired controllers listed above |
| UTY-XCSXZ2 | External input and output PCB | Provides an interface for compatible external controls |
| UTY-XWZXZ5 | External control wiring kit | Requires UTY-XCSXZ2 external input and output PCB |
Wi-Fi Control
The optional UTY-NXT-BOX anywAiR Technology Wi-Fi Adaptor II allows the system to be operated from a compatible smartphone or tablet. Available functions may include:
Switching the system on and off
Selecting the operating mode
Adjusting the set temperature
Changing fan speed and airflow settings
Configuring timers and schedules
Monitoring operating status
Controlling the system while away from the premises
Wi-Fi operation requires a compatible wireless network, supported smart device and the applicable Fujitsu General control application.
Wired Controller Requirements
The UTY-TWRXZ2 communication kit is required when connecting the UTY-RVRY, UTY-RNRYT5, UTY-RSRYT or UTY-RHRYT wired controllers.
Wired controllers and the communication kit are optional accessories and are not included with the standard system.
Typical Applications
Important Information
The complete system comprises the ASTH18KMTD indoor unit and AOTH18KMTD outdoor unit.
The specifications above use the dimensions, weight and 15m pre-charge distance published in Fujitsu’s attached Australian Lifestyle brochure. Fujitsu’s separate online product reference contains conflicting figures for these items.
Optional Wi-Fi, wired-control and external-control accessories are sold separately.
The maximum operating current and indoor drain-connection dimensions are not stated in the Lifestyle brochure.
Product selection and installation must be completed by a suitably qualified air-conditioning professional.
Pipe sizing, electrical requirements and installation limits should be confirmed before installation.
Sources: Fujitsu General Australia official SET-ASTH18KMTD product information, official KMTD installation information and Fujitsu Airstage Lifestyle Range Australian brochure
