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Fujitsu
Fujitsu Comfort 7.1kW Reverse Cycle Split System
Cooling7.10kW
Heating8.00kW
Room size50-70 m2
Indoor noise31-50 dB
Warranty5 years
The Fujitsu Comfort 7.1kW reverse cycle split system is the largest unit in the range before the step up to extra-large capacity, suited to generous open-plan living areas, combined kitchen-dining-lounge spaces, and larger family rooms.
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 Comfort 7.1kW Reverse Cycle Split System
▾The ASTH24KNTA pairs with the AOTH24KNTA outdoor unit, delivering 7.1kW of rated cooling and 8.0kW of rated heating. The rated heating output of 8kW is notably high relative to the cooling output — a useful characteristic for Hunter Valley homes where winter heating demand is often the dominant load. The all-DC inverter compressor can operate across a wide range: 1.0 to 8.0kW cooling and 1.0 to 9.6kW heating, which means the unit can comfortably serve as the sole climate control source for a large living area through all seasons.
The indoor unit grows to a wider 980mm to accommodate the higher airflow required, and depth increases slightly to 240mm. The outdoor unit remains at the KNTA footprint (799mm wide) but steps up to 632mm height and 39kg — the same outdoor unit dimensions as the ASTH22KNTA but heavier to reflect the increased refrigerant charge of 1,200g. Maximum pipe length extends to 30m with a 25m height difference, providing the greatest installation flexibility in the Comfort range.
Fujitsu’s product page classifies this unit as suitable for medium rooms — a conservative rating given the 7.1kW output. Capacity band is classified as Large in this library based on cooling output. The unit supports demand response, and Wi-Fi is available via the optional UTY-NXT-BOX adaptor.
– 7.1kW cooling and 8.0kW rated heating output
– Widest operating range in the mid-capacity Comfort models (1–8kW cooling)
– 30m maximum pipe length for flexible installation
– Larger indoor unit: 980mm wide to handle higher airflow
– R32 refrigerant (1,200g charge)
– Super Quiet Mode at 31 dB(A)
Is the Fujitsu Comfort 7.1kW Reverse Cycle Split System right for your home?
▾– Large open-plan living, dining, and kitchen areas
– Combined family room and informal dining spaces up to approximately 50–60 m2
– Homes where winter heating load is the primary design consideration
– Installations requiring long pipe runs from outdoor to indoor unit
Performance & Efficiency
▾Cooling Capacity
7.1 kW
Heating Capacity
8 kW
Recommended Room
50–70 m²
Inverter
Yes
YesEER
3.23
COP (Heating)
3.85
Star ratings from Fujitsu ZERL (average climate zone used): cooling 3.5/3/3.5 (hot/average/cold); heating 3.5/2.5/2 (hot/average/cold). Annual EER and annual COP not published by manufacturer.
Noise Levels
▾Indoor Min
31 dB(A)
Indoor Max
50 dB(A)
Outdoor
56 dB(A)
Indoor: 31 dB(A) quiet / 50 dB(A) high cooling / 48 dB(A) high heating. Outdoor: 55 dB(A) cooling / 56 dB(A) heating.
Power & Installation
▾Power Supply
240V Single Phase
Max Power Input
2.2 kW
Max Current
9.6 A
Max Pipe Length
30 m
Max Pipe Height
25 m
Refrigerant & Environment
▾Refrigerant
R32
Dimensions & Weight
▾Indoor (W×H×D)
980 × 280 × 240 mm
Outdoor (W×H×D)
799 × 632 × 290 mm
Warranty
▾Warranty period
5years
5-year full parts and labour warranty.
Model Details
▾Model NameComfort
Model NumberASTH24KNTA
Indoor UnitASTH24KNTA
Outdoor UnitAOTH24KNTA
Features
▾Quiet Mode
Turbo Mode
Sleep Mode
Energy Efficiency & Performance
▾The ASTH24KNTA achieves an EER of 3.23 for cooling and a COP of 3.85 for heating. The EER is the lowest among the Comfort range units in this library, which is expected at this output level — larger systems have higher absolute output but the ratio of output to input tends to decrease at upper capacity. The COP of 3.85 remains efficient for a unit of this size and indicates strong heating performance relative to input power.
Under the ZERL system the unit holds 3.0 cooling stars in the average climate zone (3.5 hot, 3.5 cold) and 2.5 heating stars in the average zone. The cold-zone heating rating of 2.0 stars reflects the efficiency drop at low outdoor temperatures. For Hunter Valley winters, the unit’s ability to operate down to -15 degrees Celsius ensures continuous heating capability, even if at reduced efficiency on the coldest nights.
Installation Notes for the Fujitsu Comfort 7.1kW Reverse Cycle Split System
▾This system pairs the ASTH24KNTA indoor unit with the AOTH24KNTA outdoor unit.
Published installation details include maximum pipe length of 30m, maximum height difference of 25m, power supply: 240v_single_phase.
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 full parts and labour warranty.
Warranty coverage depends on correct installation, normal use, maintenance requirements and the manufacturer’s current warranty terms.
Frequently Asked Questions
▾Is the ASTH24KNTA suitable for a large open-plan living area?
Yes. At 7.1kW cooling it suits open-plan spaces up to approximately 50--60 m2, depending on insulation quality, ceiling height, and sun exposure.
Why is the heating output higher than the cooling output?
Heat pump systems typically deliver higher heating than cooling output at rated conditions due to how the refrigeration cycle works in heating mode. The 8.0kW heating capacity means this unit handles large heating loads without being oversized for the room's cooling requirements.
Does the wider indoor unit affect installation?
The indoor unit is 980mm wide, compared to 834mm for the smaller KNTA models. This needs to be accounted for in wall placement -- particularly in rooms with limited clear wall space.
What is the warranty?
5-year full parts and labour warranty on all Fujitsu General domestic systems.
Does it work with solar?
Yes, though at 2.2kW rated cooling input, it draws more from the solar array than smaller units. A 6.6kW solar system will generally cover the load during peak generation hours.
How long does installation take?
A standard installation is typically a day's work for this size unit. Long pipe runs or two-storey placements will add time.