BritOneAir
BritOne Air One 12000 BTU (3.5kW) Wall Mounted Air Conditioner
12000 BTU · 3.5kW cooling / 3.8kW heating · R32 · A++ · Wi-Fi · rooms up to 30m²
£609.27ex VAT£731.12 inc VATPre-order
Pre-orderDelivery 2–3 weeks (pre-order)
Size options (cooling capacity)
Sizes with a dashed outline are available to order — tap one and we'll price it for you.
F-Gas certified installation · REFCOM registered engineers
- Cooling capacity
- 3.5 kW (12,000 BTU)
- Heating capacity
- 3.8 kW
- SEER / SCOP
- 6.6 / 4.0
- Refrigerant
- R32
- Sound level (indoor)
- 24 dB(A)
- Power supply
- 230V / 1ph / 50Hz
Our best-seller: the 12,000 BTU size that fits nine out of ten UK living rooms.
- Year-round 4-in-1 comfort — cool, heat, dehumidify and fan.
- A++ R32 inverter holds temperature steadily instead of cycling on and off.
- 24 dB(A) indoor unit: watch TV without turning the volume up.
- Wi-Fi ready with app scheduling to keep bills predictable.
- Pick from 20+ British liveries for the outdoor unit.
Rooms up to 30m². Reserve with a 20% deposit; balance only on dispatch. F-Gas certified installation from £1650 + VAT.
24/7 Booking Line
Talk to a real human
UK-Based Coordinators, 7 Days a Week
Our friendly team answers every call, message and booking request — day, night, weekends and bank holidays. No call centres, no bots, no waiting in a queue. Speak to a real coordinator who dispatches an F-Gas certified engineer fast.
UK-based coordinatorsAverage answer time under 30sWeekends & bank holidays