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Fujitsu Airstage KMTC 3.5kW Wall Split System
Fujitsu

Fujitsu Airstage KMTC 3.5kW Wall Split System

In StockEnergy A++
£1,405.000

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Dispatched in 3-5 working days
UK-Wide Delivery
Free UK mainland delivery on in-stock units

Retail prices include VAT.

Designed for medium-sized living areas, the Fujitsu Airstage KMTC 3.5kW split system offers a perfect balance of power and efficiency. This unit is highly regarded in the UK market for its reliability and quiet performance, making it an excellent choice for living rooms or open-plan apartments. The system features intelligent inverter control, which adjusts power consumption based on room demand, significantly reducing energy costs. With integrated Wi-Fi connectivity, users can easily manage their home climate through a dedicated app, providing ultimate convenience and control. The unit is fully reverse-cycle, meaning it provides efficient heating during colder months and rapid cooling during summer heatwaves. Its modern, minimalist aesthetic ensures it complements any decor, while the advanced filter technology ensures clean, fresh air circulation. This system requires professional installation to meet safety and performance standards.

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Smart-home ready

Connects natively with the systems below — control by app or voice.

Google HomeAmazon Alexa
  • Free UK mainland delivery on in-stock units
  • Manufacturer warranty included
  • 14-day returns

Downloads & specs

More from Fujitsu →

Full Specifications

Cooling Capacity12,000 BTU
Recommended Room SizeUp to 35m²
Energy RatingA++
Smart HomeGoogle Home, Amazon Alexa
Noise Level—
CategorySplit System AC
SKUASTG12KMTC

Description

Designed for medium-sized living areas, the Fujitsu Airstage KMTC 3.5kW split system offers a perfect balance of power and efficiency. This unit is highly regarded in the UK market for its reliability and quiet performance, making it an excellent choice for living rooms or open-plan apartments. The system features intelligent inverter control, which adjusts power consumption based on room demand, significantly reducing energy costs. With integrated Wi-Fi connectivity, users can easily manage their home climate through a dedicated app, providing ultimate convenience and control. The unit is fully reverse-cycle, meaning it provides efficient heating during colder months and rapid cooling during summer heatwaves. Its modern, minimalist aesthetic ensures it complements any decor, while the advanced filter technology ensures clean, fresh air circulation. This system requires professional installation to meet safety and performance standards.

Compare similar units

Side-by-side specs for other split system ac in a similar BTU range.

Cooling Capacity
12,000 BTU
12,000 BTU
12,000 BTU
12,000 BTU
Room Size
Up to 35m²
Up to 35m²
Up to 35m²
Up to 35m²
Energy Rating
A++
A+++
A+++
A+++
Heating Capable
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Smart Home
Google Home, Amazon Alexa
Amazon Alexa, Google Home
Samsung SmartThings
Google Home, Amazon Alexa
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£1,405.00
£840.00
£1,285.00
£1,164.18

Annual energy savings estimate

How much this A++-rated unit could save versus a standard C-rated model, based on your usage.

This unit

97 kWh/yr

EER 13

Standard model

158 kWh/yr

EER 8

Est. saving

£16.44

61 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (12,000 BTU). Actual savings vary with room size, climate and usage patterns.

Winter heating cost: this AC vs electric heaters

This unit reverses to heat your room in winter. Based on its 4 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£831

This AC / season

£277

You save / season

£554

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC1026 kWh£277Up to 300%
Plug-in electric heater3077 kWh£831100%
Electric storage heater3077 kWh£831100%

Heat output estimated from this unit's 14,000 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →

Share your savings

This heat-pump AC costs only £277/season to heat a room vs £831 for an electric heater - that's £554 saved. https://stockool.store/products/fujitsu-airstage-kmtc-3-5kw-wall-split

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