Fujitsu 12.5kW Multi-Head Reverse Cycle Outdoor Unit (Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit)
Model Number: AOTH45KBTA5 | System Type: Inverter Multi-Split Outdoor Unit (Connects 2 to 5 Indoor Units)
Product Overview
The Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit is Fujitsu’s highest-output multi-split condenser, designed specifically for substantial residential builds and premium multi-room developments. Connecting up to five indoor units to a single chassis eliminates outdoor clutter while offering independent temperature control across multiple bedrooms and large open-plan living areas simultaneously.
Driven by a high-output DC twin-rotary compressor and eco-friendly R32 refrigerant, the unit modulates capacity effortlessly to match real-time thermal demands. Trade contractors and specifiers value the total 80-metre piping allowance and extensive indoor capacity combinations, ensuring straightforward installation across multi-storey floor plans without compromising energy efficiency.
Quick Highlights
- High-Capacity 5-Port System: Seamlessly powers between 2 and 5 indoor heads from one outdoor footprint.
- Substantial Output: Rated 12.5 kW cooling and 14.0 kW heating nominal capacity.
- Next-Gen R32 Refrigerant: Lower global warming potential and enhanced thermodynamic performance.
- DC Twin-Rotary Inverter: Balanced motor rotation reduces structural vibration and energy use.
- Independent Room Control: Custom comfort settings for every connected living and sleeping zone.
- Extensive Diversity Range: Supports connectable indoor combinations up to 18.0 kW.
- Long Piping Limits: Up to 80 m total piping allowance with a 15 m maximum height elevation.
- Blue Fin Heat Exchanger: Protective anti-corrosion coating against harsh outdoor elements.
- Extreme Weather Operation: Reliable cooling performance in ambient conditions up to 46°C.
- Quiet Outdoor Operation: Selectable low noise mode assists in meeting boundary council limits.
Why Choose This Model (Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit)?
The Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit is the premier choice for large homes requiring whole-house air conditioning without roof space for ducted systems. Homeowners enjoy the freedom to mix wall-mounted, bulkhead, and cassette indoor units across five distinct zones, optimizing running costs by only conditioning occupied spaces with a high-capacity inverter system.
Key Features
5-Port Multi-Room Versatility
Engineered with five dedicated refrigerant port circuits, this condenser delivers independent comfort to five separate zones. Each room enjoys tailored climate control, preventing energy waste in unoccupied rooms.
High-Output DC Twin-Rotary Compressor
The heavy-duty DC twin-rotary compressor ensures balanced internal compression forces. This precision engineering reduces operational vibration, guarantees whisper-quiet performance, and provides excellent seasonal energy efficiency.
Eco-Friendly R32 Refrigerant
Utilising modern R32 refrigerant, the condenser achieves higher heat exchange efficiency with a 68% lower environmental impact than older R410A systems, lowering power bills and carbon emissions.
Diverse Indoor Unit Compatibility
Pair the unit with high-wall splits, low-profile bulkhead units, or ceiling cassettes. This architectural flexibility ensures that every room has an indoor unit suited to its interior design.
80m Extended Pipe Allowance
With up to 80 metres of total refrigerant piping and a 15-metre elevation difference, installers have maximum flexibility when positioning equipment across large multi-storey homes and commercial applications.
Blue Fin Coil Protection
The condenser coils feature an advanced anti-corrosion blue fin coating that protects against coastal sea breezes, moisture, and extreme Australian atmospheric conditions for enhanced durability.
Ideal Applications
- Large Multi-Bedroom Residences: Provides comprehensive zoned heating and cooling for up to five rooms from one outdoor condenser.
- Multi-Level Townhouses: Saves valuable courtyard and balcony space by consolidating external HVAC units.
- Homes Without Ducted Ceiling Space: Excellent whole-home alternative for concrete-slab or raked-ceiling architecture.
- Mixed Living & Sleeping Zones: Handles high thermal loads in open-plan family areas while quietly cooling bedrooms.
Why Professionals Choose This Model (Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit)?
HVAC trades and builders consistently specify the Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit for its generous 12.5 kW capacity and proven reliability. Featuring five accessible flare service ports, straightforward electrical connections, and an expansive diversity ratio up to 18.0 kW, this unit simplifies complex multi-room rough-ins and ensures long-term operational performance.
Technical Specifications
General & Capacity Performance
| Parameter | Technical Specification |
|---|---|
| System Configuration | Multi-Split Inverter Outdoor Unit (2 to 5 Indoor Units) |
| Nominal Cooling Capacity | 12.5 kW |
| Cooling Capacity Range (Min – Max) | 3.5 kW – 14.0 kW |
| Nominal Heating Capacity | 14.0 kW |
| Heating Capacity Range (Min – Max) | 2.7 kW – 15.7 kW |
| Connectable Indoor Capacity Ratio | 7.5 kW to 18.0 kW (Combination Range) |
| EER / COP (Rated) | 4.40 / 4.55 (Dependent on connected indoor combination) |
Electrical Data
| Power Supply | 1 Phase, 230–240 V, 50 Hz |
| Power Supply Location | Outdoor Unit to Main Switchboard |
| Recommended Circuit Breaker | 32 A (Refer to installation manual) |
| Interconnecting Cable | 4-Core (3 Core + Earth) per indoor head |
Dimensions, Weight & Noise Levels
| Dimensions (H × W × D) | 914 mm × 970 mm × 370 mm |
| Net Weight | 77 kg |
| Sound Pressure Level (Cooling / Heating) | 54 dBA / 56 dBA (Standard high mode) |
| Quiet Sound Mode (Cooling) | 50 dBA |
Refrigerant & Piping Specifications
| Refrigerant Type | R32 |
| Compressor Motor | Hermetically Sealed DC Twin-Rotary |
| Liquid Pipe Connections | 5 × 6.35 mm (1/4″) |
| Gas Pipe Connections | 3 × 9.52 mm (3/8″) + 2 × 12.70 mm (1/2″) |
| Max Total Pipe Length (All Ports) | 80 m |
| Max Length for Single Indoor Unit | 25 m |
| Max Height Difference (Outdoor vs Indoor) | 15 m |
| Operating Ambient Range (Cool / Heat) | -10°C to 46°C DB / -15°C to 24°C DB |
Installation Information of the Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit
Installation of the Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit must be completed by an ARC-licensed technician to comply with Australian safety and building codes. Place the condenser on a level concrete slab or heavy-duty anti-vibration mountings with unobstructed airflow clearance. Five independent flare ports allow straightforward rough-in to all connected indoor units.
Compatible Indoor Units & Accessories
- Fujitsu KMTC / KMCB Series: Lifestyle wall-mounted units (2.0 kW to 7.1 kW).
- Fujitsu Compact Cassette Heads (AUXG Series): 600 × 600 mm ceiling grid cassettes.
- Fujitsu Slim Ducted Bulkhead Heads (ARXG Series): Concealed ceiling bulkheads.
- Heavy-Duty Cantilever Wall Brackets: Hot-dipped galvanised wall brackets.
- Anti-Vibration Mounting Poly-Slabs: Weatherproof rubber/poly risers.
What’s Included in Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit
- 1 x Fujitsu 12.5 kW 5-Port Multi-Split Outdoor Unit (AOTH45KBTA5)
- 1 x Set of Copper Pipe Adapters / Line Sizing Reducers
- 1 x Outdoor Drain Elbow and Cap Assembly
- 1 x Comprehensive Installation and Technical Manual
Warranty
The Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit includes Fujitsu General Australia’s 5-Year Full Parts and Labour Warranty for domestic residential applications when installed by an ARC-licensed technician in accordance with manufacturer specifications.
Frequently Asked Questions
Q1: How many indoor heads can the Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit run?
A: This Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit features five refrigerant port connections and supports from 2 up to 5 indoor units simultaneously.
Q2: Can different rooms run different temperature set points?
A: Yes. Each indoor unit maintains independent thermostat settings, provided all connected units run in either cooling or heating mode at the same time.
Q3: What is the maximum connected indoor capacity for this outdoor condenser?
A: It accommodates connected indoor combinations between 7.5 kW and 18.0 kW, distributing power dynamically across active zones.
Q4: What refrigerant is used in this multi-split condenser?
A: It operates on high-efficiency R32 refrigerant, offering superior thermal performance and lower environmental impact.
Q5: Can I mix different indoor head styles on this unit?
A: Yes. You can freely combine compatible Fujitsu R32 wall-mounted, bulkhead ducted, and cassette indoor units on the same system.
Q6: Does this unit require professional installation?
A: Yes. Australian law requires all refrigerant air conditioning systems to be installed and commissioned by an ARC-licensed technician.
Why Buy From AirContrade?
AirContrade is Australia’s reliable wholesale HVAC partner, supplying trade installers, builders, and homeowners with authentic brand equipment. When you purchase the Fujitsu AOTH45KBTA5 Multi-Head Outdoor Unit from AirContrade, you benefit from competitive trade rates, extensive stock availability, fast national shipping, and technical product support.
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