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Akai Mistral Multi-Split 1x9000 and 1x12000 BTU Smart Wall Mounted Split Air Conditioner with Heat Pump
Why buy me
- Powerful & quiet 9000 + 12000 BTU cooling & heating for two rooms totalling up to 55-60 sqm in homes & offices
- 2-Way Split - control the climate of 2 rooms from a single outdoor unit, keeping your walls and garden clutter-free
- 3-in-1: Cool | Heat | Dehumidify - one system for summer and winter
- Smart - Wi-Fi control from your phone or home assistant; smart scheduling saves energy
- A++ / A+ rated (SEER 6.1 / SCOP 4.0) for efficient cooling & heating all year round. Air conditioning is up to 4x more efficient than electric heating
- Right-sized rooms - the 9000 BTU indoor suits bedrooms and studies (25 sqm), the 12000 BTU indoor suits lounges and open-plan spaces (35 sqm)
- Sleep mode sets the fan to its quietest speed (32 dB) and regulates temperature through the night to save energy
- Winter Function pre-warms the pipework before the fans start, so you never get a cold blast on start-up
- Pipe & cable kits are not supplied - your F-Gas installer will need 2 x pipe kits (1/4” & 3/8”). See Recommended Accessories below.
The details
Space-saving solution
Unlike conventional split air conditioners that need a separate outdoor compressor for every room, the Akai Mistral dual-split runs two rooms from a single outdoor compressor. That saves on installation cost, saves on running cost, and keeps the outside of your property tidy. Each indoor unit has its own remote control, so both rooms can be set independently.
The pairing is deliberate:
- 9000 BTU indoor for a bedroom, nursery, home office or study (25 sqm)
- 12000 BTU indoor for a lounge, dining room or open-plan space (35 sqm)
Cooling & heating, all year round
The Mistral is a full heat pump system - it cools in summer and heats in winter, at up to 6.16 kW of heating output. The Strong Dehumidify function pulls excess moisture out of the air for better air quality, and it’s genuinely useful for drying laundry on wet days.
Inverter performance
The Mistral uses DC inverter technology - the compressor speed ramps up and down with demand instead of switching hard on and off. Cooling output modulates from just 1.23 kW up to 5.6 kW, and power draw from 280 W to 2050 W. That means it hits target temperature fast, then sips power to hold it. Inverter systems typically cut 40–60% off the energy bill versus a fixed-speed equivalent, and they run far more quietly once they’ve settled.
Customise your comfort & save energy
Don’t waste money heating rooms nobody is in. A dual split lets you create separate temperature zones in the parts of your home you actually use. Heating by heat pump is up to 4 times more efficient than electric heating.
At full cooling tilt the Mistral draws 1545 W - around 42p per hour at 27p/kWh. Once it’s holding temperature, the inverter can drop as low as 280 W, or about 8p per hour.
Running cost assumption: 27p/kWh. Merch to refresh against current price cap before go-live.
Built to be lived with
- Silent operation - larger-diameter fan blades move the same air more quietly, down to 32 dB(A) on the lowest indoor setting
- Turbo for rapid cool-down or warm-up
- Auto Restart - after a power cut the unit remembers its settings and picks up where it left off
- Self-diagnosis & protection - faults are identified by the onboard controller and displayed on the LED, with protection logic to prevent damage
- Washable anti-dust filter - captures fine dust, rinses clean
Technical specifications
- Smart Wi-Fi control
- DC Inverter - energy-saving technology
- Heat pump (cooling + heating)
- Ultra-quiet operation from 32 dB(A)
- Remote control for each indoor unit
- Digital LED temperature and function display
- Cooling capacity (system total): 5.3 kW (1.23 – 5.6 kW)
- Heating capacity (system total): 6.16 kW (1.29 – 6.5 kW)
- Pdesign (cooling): 5.1 kW | Pdesign (heating, average season): 4.0 kW
- EER 3.3 / COP 3.9
- SEER 6.1 (A++) / SCOP 4.0 (A+)
- Annual energy consumption: 293 kWh/a (cooling) / 1400 kWh/a (heating, average season)
- Refrigerant: R32, 850 g pre-charged, GWP 675 (0.574 tCO₂e)
- Compressor: rotary
- Airflow (indoor): 550 m³/h
- Max refrigerant pipe run: 15 m | Max height difference: 10 m
- Interconnecting cable: 4 x 0.75 mm²
- Pipe sizes: 3/8” gas / 1/4” liquid
- Operating range - outdoor: cooling -15 to 53°C, heating -20 to 30°C
- Operating range - indoor: cooling 17 to 32°C, heating 0 to 30°C
- Power supply: 220-240V ~ / 50Hz / 1 phase (operating range 165–265 V)
Dimensions
- Indoor unit (W x H x D): 777 x 250 x 201 mm
- Outdoor unit (W x H x D): 853 x 602 x 349 mm
- Weight, indoor (net/gross): 8 kg / 10.5 kg
- Weight, outdoor (net/gross): 31 kg / 33 kg
- Carton, indoor: 850 x 320 x 275 mm | Carton, outdoor: 890 x 628 x 385 mm
What's in the Box
- 1 x 9000 BTU Indoor Unit
- 1 x 12000 BTU Indoor Unit
- 1 x Outdoor Unit
- Indoor wall mounting brackets
- 2 x Remote controls
Not Included
- Copper pipe & electrical cable kits - you will need 2 x pipe kits (1/4” & 3/8”), one per indoor unit, sized to your installation. See Recommended Accessories. Wall brackets for the outdoor unit are also sold separately.
Useful Information
The indoor and outdoor units are pre-gassed and sealed. The indoor units fit to the wall using the mounting plate supplied in the box. The condenser can be floor-mounted or wall-mounted using an optional bracket.
This unit must be installed by an F-Gas qualified AC engineer. Please ensure the fitter reads the user manual in full before installing. These units contain a gas governed by F-Gas regulations.
Note: To reduce Global Warming Potential, the outdoor unit footprint, and to provide extra energy savings, our outdoor units have a rating lower than the sum of the indoor units’ BTU. This does not affect cooling or heating in individual rooms - the units are variable inverters and balance capacity between rooms to reach target temperature in the shortest time. Please size rooms per our guidance or call for tech support.
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