KETF

Overview and positioning

Fuji Electric KETF sits in the KETA designer line — a clearly defined premium-aesthetic series within the Japanese manufacturer's catalogue. In Fuji Electric's lineup the KETA series occupies a step above standard economy models, offering a three-dimensional casing with a glossy relief panel rather than a flat matte front. The colour range covers white and graphite, letting the indoor unit fit both bright, minimalist interiors and darker, industrial spaces.

On the Polish HVAC market Fuji Electric remains a brand with a distinctly Japanese character — the company belongs to none of the Chinese industrial groups that have acquired most of the European air-conditioning market in recent years. Manufacturing facilities in Japan use proprietary compressor lines that Fuji Electric has been building since the 1960s. From LeoKlima's perspective that track record translates into a low rate of service calls and reliable parts availability for many years after purchase.

The nominal cooling capacity of 3.4 kW covers rooms up to 35–40 m² in typical Polish climate conditions. In well-insulated low-energy or passive-house buildings the same unit can comfortably serve 45 m². LeoKlima customers most often install the KETF in premium-finish living rooms, bedrooms with large glazing and upscale offices where the appearance of equipment is a deliberate part of the interior design.

Cooling and heating technology

At the core of the unit sits a Fuji Electric rotary compressor driven by a DC inverter. The inverter modulates output continuously based on actual demand — rather than switching the compressor on and off abruptly, it runs it at varying speeds in a continuous, analogue fashion. The result is lower electricity consumption, reduced noise during steady operation and a longer service life for the mechanical refrigeration components.

The cooling operating range spans -10°C to +46°C of outdoor temperature; the heating range runs from -15°C to +24°C. The heating figure is the one that matters most for the Polish climate: the unit can act as the primary or supplementary heat source in the shoulder seasons when outdoor temperature sits between -5°C and +10°C. At hard frosts below -15°C heating output decreases and an auxiliary heat source in the room is worth having.

The unit runs on R32 refrigerant, now the standard for A++ and A+ class products. R32 carries a GWP of 675 — more than twice lower than R410A's GWP of 2088 — which reduces both the environmental footprint and the required system charge while improving heat-transfer efficiency. SEER 7.3 confirms energy class A++ in cooling; SCOP 4.4 confirms class A+ in heating.

Comfort and air quality

Fuji Electric KETF incorporates dual filtration — two independent filters working in parallel. The first is an electrostatic polyphenol filter that captures fine dust particles, fungal spores and harmful microorganisms through static electricity. Polyphenol compounds — a naturally occurring substance found in apples — additionally inhibit the reproduction of bacteria trapped by the filter. The second is an extended-life ionic filter that removes unpleasant odours through oxidation and ion reduction on the surface of fine ceramic elements.

This combination of filtration makes particular sense for allergy sufferers and people with asthma. Fuji Electric explicitly positions the unit as suited to people with elevated sensitivity to pollen, dust and spores. An LED indicator on the indoor unit panel signals when the filters need cleaning. The ionic filter is washable, which extends its service life and eliminates the need for replacement cartridges.

Automatic vertical louvres shift the airflow direction horizontally, allowing the air jet to sweep the room rather than blast a single spot. The microprocessor adjusts fan speed to the gap between measured and target temperature — running faster when the gap is large and slowing to a minimum 20 dB(A) as the room reaches the set point. Sleep mode gradually shifts the target temperature through the night, following a natural sleeping pattern.

Controls and Wi-Fi

The Wi-Fi module built into the KETF indoor unit connects the air conditioner to a 2.4 GHz home network and makes it accessible via smartphone or tablet from any location. The app covers all operating modes — cooling, heating, dehumidification, ventilation and auto. From the app you can set the target temperature, adjust fan speed, activate ECO mode to reduce electricity consumption or switch to the full-power mode for fast temperature pull-down.

The daily scheduler supports four operation cycles within a 24-hour period: on, off, on-then-off and off-then-on. The weekly scheduler lets you assign a different timetable to each day of the week — useful in offices or households with a regular rhythm. If the power supply is interrupted, the Auto Restart function brings the unit back to its last active settings when power is restored, without requiring any manual intervention.

The wireless remote control supplied with the unit provides complete in-room operation without needing the phone. The interface is clear, and button backlighting makes it easy to use in low light. For office or multi-zone installations LeoKlima can advise on optional wired wall controllers, but in a typical home setup the remote and mobile app cover everything needed.

Design and build

The three-dimensional casing of the KETF sets it apart from most air conditioners in a comparable price bracket. The front of the indoor unit has a relief structure whose glossy surface shifts in appearance depending on the angle of natural light — different in the morning, different under overcast sky. Indoor unit dimensions: 950 mm wide, 295 mm tall, 230 mm deep, weighing 11 kg.

The two colour variants — white and graphite — are not just a cosmetic option. The white KETF suits interiors with bright wall colours and furniture, Scandinavian or minimalist styling. The graphite variant belongs in darker palettes, industrial or modernist settings and lofts with exposed concrete. Both use high-quality plastic with a coating resistant to yellowing over years of UV exposure.

The outdoor unit matches the proportions and weight typical of a 3.4 kW class product. Its galvanised-steel casing with powder-coat finish withstands years of Polish weather without corroding. Fuji Electric uses standard copper connections (1/4" and 3/8" flared), which means the unit is compatible with any service company and easy to relocate without proprietary parts.

Installation and service

The 7,181.88 PLN price with installation covers a standard fitting carried out by the LeoKlima team — the outdoor unit mounted on the external building wall up to 5 metres from the indoor unit, copper pipes in premium-class insulation (Armacell or Ebrille), gravity condensate drainage to the sanitary stack, and the electrical connection to the nearest socket. The price includes a nitrogen pressure test, vacuum evacuation and commissioning with a customer briefing.

Premium anti-vibration brackets under the outdoor unit are standard practice at LeoKlima — they eliminate vibrations transmitted to the building structure and extend compressor life. For upper-floor flats or balcony situations a LeoKlima technician assesses the best location for the outdoor unit during a free site survey, which is worth booking before purchase. After commissioning the customer receives a report with pressure-test parameters and refrigerant charge level.

As a Japanese brand, Fuji Electric has a well-established service network in Poland — original spare parts are available without long lead times. LeoKlima as an authorised service partner provides a warranty on the compressor and components in line with the manufacturer's terms. An annual service check before each cooling season — cleaning filters, the evaporator and the condenser — is recommended and extends the unit's working life by several years.

Who this model is for — summary

Fuji Electric KETF 3.4 kW suits customers for whom a standard white slab does not match a carefully designed interior. The model pairs Japanese reliability and A++ energy class with a design Fuji Electric built for premium living rooms, bedrooms and upscale offices where the appearance of equipment is part of the brief. The dual polyphenol and ionic filtration also makes it a solid choice for allergy sufferers and people with sensitive airways.

Functionally, KETF concedes nothing to cheaper segments — it comes with Wi-Fi, heating to -15°C, daily and weekly scheduling, quiet operation from 20 dB(A) and auto restart after power cuts. The premium lies in build quality and visual character, for which customers pay a step up compared to a standard Fuji Electric model.

If the budget is constrained and design is not the priority, other Fuji Electric models in the LeoKlima catalogue are worth considering. But when Japanese technology and a visually distinctive unit are both on the requirement list, KETF is a justified choice at this price level. A free LeoKlima site survey will confirm whether 3.4 kW is the right capacity for a specific room — enquiries via the on-site form or by phone on 502 010 010.

Long-term performance depends heavily on installation quality. A leaky system, skipped vacuum or wrongly profiled condensate run can shorten even a good unit's life by several years. Ordering through LeoKlima means a certified F-gas team and a handover report with concrete technical readings, not just a device on the wall.

A pre-season annual service — filter cleaning, pressure check and evaporator sanitation — is a sensible spend. The cost pays back through lower electricity bills and reduced risk of a breakdown at the peak of summer, when every service team in Warsaw has a waiting list.