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Fujitsu
Fujitsu 18.0kW High Static Ducted Reverse Cycle Air Conditioner
Cooling18.0kW
Heating20.0kW
Room size220-320 m2
Indoor noise35-44 dB
Warranty5 years
The Fujitsu ARTH65KHTA is an 18.0kW high static ducted reverse cycle air conditioner suited to very large Australian homes, with an estimated total floor area coverage of approximately 220 to 320 m2. Paired with the AOTH65KBTA single-phase outdoor unit on a 230V supply, it provides whole-home cooling and heating through ceiling-mounted ducts with zone control support.
Inverter-driven and using R32 refrigerant, the ARTH65KHTA operates in cooling mode up to 50°C ambient and in heating mode down to -20°C — an extended heating range compared to smaller models in the High Static range. A maximum pipe run of 75m provides installation flexibility for large properties.
Final sizing should be confirmed through an on-site assessment, as insulation, ceiling height, glazing, sun exposure and room layout can all affect the right unit choice.
Overview of Fujitsu 18.0kW High Static Ducted Reverse Cycle Air Conditioner
▾The ARTH65KHTA is the highest-capacity single-phase model in the larger-format High Static ducted range, delivering 18.0kW of rated cooling and 20.0kW of rated heating. It is a reverse cycle system providing year-round whole-home comfort. The indoor unit installs in the ceiling cavity and the AOTH65KBTA outdoor unit is mounted externally.
A three-phase outdoor option (AOTH65KRTA) is also available for commercial or three-phase residential installations, paired with the same indoor unit. The 75m maximum pipe run makes this model particularly suited to larger properties where outdoor unit placement is further from the building.
Zone control for room-by-room airflow management.
Inverter compressor for variable-capacity operation and stable temperatures.
R32 refrigerant — approximately 67% lower global warming potential than R410A.
75m maximum pipe run for greater installation flexibility.
Extended heating operation down to -20°C ambient.
Economy mode for reduced energy draw during light-load periods.
Auto changeover between heating and cooling modes.
Ambient cooling operation up to 50°C.
Optional WiFi control via UTY-ANY2 anywAiR module (not included standard).
Is the Fujitsu 18.0kW High Static Ducted Reverse Cycle Air Conditioner right for your home?
▾The ARTH65KHTA is estimated to suit homes with a total floor area of approximately 220 to 320 m2, making it suitable for very large Australian homes with five or more bedrooms. Actual coverage depends on insulation, ceiling height, glazing, sun exposure, number of zones and duct layout.
The extended 75m maximum pipe run allows greater flexibility in outdoor unit placement, which can be advantageous on larger properties or where rooftop or remote siting is preferred.
Performance & Efficiency
▾Cooling Capacity
18 kW
Heating Capacity
20 kW
Recommended Room
220–320 m²
Inverter
Yes
YesEER
3.21
COP (Heating)
3.82
Star ratings shown for average Australian climate zone (GEMS). Unit operates to 50°C ambient in cooling mode and down to -20°C in heating mode.
Noise Levels
▾Indoor Min
35 dB(A)
Indoor Max
44 dB(A)
Outdoor
57 dB(A)
Indoor noise is sound pressure dB(A) varying by fan speed. Outdoor noise is sound pressure at 1m in cooling mode; heating mode outdoor noise approximately 58 dB(A).
Power & Installation
▾Power Supply
240V Single Phase
Max Power Input
7.8 kW
Max Current
24.6 A
Max Pipe Length
75 m
Max Pipe Height
30 m
Pairs with AOTH65KBTA outdoor unit (single-phase). Maximum pipe run 75m (factory precharged to 30m; field refrigerant charge required beyond 30m). Max current 24.6A; electrical design must be confirmed by installer. Three-phase outdoor option also available (AOTH65KRTA) for commercial applications.
Refrigerant & Environment
▾Refrigerant
R32
R32 has approximately 67% lower global warming potential than R410A.
Dimensions & Weight
▾Indoor (W×H×D)
1400 × 360 × 850 mm
Outdoor (W×H×D)
970 × 1418 × 370 mm
Warranty
▾Warranty period
5years
5-year parts and labour residential warranty. Requires licensed installation and registration with Fujitsu General Australia.
Model Details
▾Model NameHigh Static
Model NumberARTH65KHTA
Indoor UnitARTH65KHTA
Outdoor UnitAOTH65KBTA
Features
▾Eco Mode
Zoning
Quiet Mode
Energy Efficiency & Performance
▾The ARTH65KHTA achieves an EER of 3.21 kW/kW in cooling and a COP of 3.82 kW/kW in heating under rated conditions. It carries a 2.5-star cooling and 2.5-star heating energy rating under average Australian climate zone conditions.
The inverter compressor adjusts output to match the home’s actual load. Maximum power input is 7.80 kW (worst-case operating condition) and maximum running current is 24.6 A. Electrical design must be confirmed by the installer given the higher current draw at this capacity.
Installation Notes for the Fujitsu 18.0kW High Static Ducted Reverse Cycle Air Conditioner
▾This system pairs the ARTH65KHTA indoor unit with the AOTH65KBTA outdoor unit.
Published installation details include maximum pipe length of 75m, maximum height difference of 30m, power supply: 240v_single_phase.
Pairs with AOTH65KBTA outdoor unit (single-phase). Maximum pipe run 75m (factory precharged to 30m; field refrigerant charge required beyond 30m). Max current 24.6A; electrical design must be confirmed by installer. Three-phase outdoor option also available (AOTH65KRTA) for commercial applications.
A site assessment should confirm unit placement, pipe route, drainage, electrical requirements and final room sizing before installation.
Warranty Information
▾This unit has a 5-year warranty, based on the warranty information recorded for this model.
5-year parts and labour residential warranty. Requires licensed installation and registration with Fujitsu General Australia.
Warranty coverage depends on correct installation, normal use, maintenance requirements and the manufacturer’s current warranty terms.
Frequently Asked Questions
▾What size home does the Fujitsu ARTH65KHTA suit?
The ARTH65KHTA is an 18.0kW high static ducted system estimated to suit homes from approximately 220 to 320 m2, depending on insulation, ceiling height, glazing, sun exposure and the number of zones. A licensed installer should assess your home before confirming suitability.
Is this a reverse cycle air conditioner?
Yes. The ARTH65KHTA provides both whole-home ducted cooling and heating for year-round comfort.
Does this unit require professional installation?
Yes. Ducted air conditioning must be designed and installed by a licensed refrigeration and air conditioning installer in accordance with the manufacturer's specifications.
What is the warranty on this unit?
The ARTH65KHTA includes a 5-year parts and labour warranty for residential installations with Fujitsu General Australia, subject to licensed installation and timely warranty registration.
What refrigerant does this unit use?
The ARTH65KHTA uses R32 refrigerant, which has approximately 67% lower global warming potential than the older R410A refrigerant.
Is this unit available in three-phase?
Yes. The ARTH65KHTA indoor unit can be paired with the AOTH65KRTA three-phase outdoor unit for three-phase installations. The single-phase version pairs with the AOTH65KBTA outdoor unit.