Grandbreeze mobile air conditioner 12000 BTU

When a British summer decides to actually show up, you need something that can handle it. The Klarstein Grandbreeze is a portable air conditioner that cools rooms up to 56 m² — no installation, no engineer, no fuss. Just plug in, attach the exhaust hose to the window, and you're done.

At 12,000 BTU and 3.5 kW of cooling power, the Grandbreeze means business. Energy efficiency class A+ keeps running costs in check — it draws just 1.1 kWh per hour, with a standby consumption of only 0.5 W. Set your preferred temperature anywhere between 18 and 32 °C, and the 390 m³/h airflow distributes cool air evenly around the room. Three fan speeds and automatic vertical louvre swing mean the cool air reaches every corner, not just the spot in front of the unit.

It's a genuine 3-in-1: air conditioner, fan, and dehumidifier in a single unit. The dehumidifier pulls up to 1.5 litres per hour from the air, using a 0.8-litre water tank with a level indicator so you always know when it needs emptying. A built-in dust filter keeps the air clean while it works. The 24-hour timer and sleep mode let you set the schedule and forget about it — come home to a cool flat, or drift off knowing it'll dial back automatically overnight.

Control everything through the Klarstein app from your phone, whether you're on the sofa or still at the office. Full Amazon Alexa and Google Home integration means you can adjust temperature, mode, and timer with a voice command — no need to even look for the remote. The R290 refrigerant used has a low global warming potential and is among the more energy-efficient options in its class.

The Grandbreeze is designed for larger spaces — flats, home offices, hotel rooms, and open-plan rooms between 42 and 56 m² where a fixed air con simply isn't an option. The telescopic exhaust hose and window sealing kit are included in the box, and the locking castors mean you can move it between rooms on any floor type without a second thought.

Stay cool this summer — order the Grandbreeze today and have it ready for the next heatwave.

• Cooling output: 12,000 BTU / 3.5 kW
• Airflow: 390 m³/h
• Recommended room size: 42–56 m²
• Temperature range: 18–32 °C
• Energy efficiency ratio: 2.6
• Power consumption: 1.1 kWh/60 min.
• Standby consumption: 0.5 W
• Energy efficiency class: A+
• Orientation: vertical
• Operating modes: cooling, dehumidifying, fan
• Airflow direction: 2-way operation
• Fan speeds: 3
• Water tank capacity: 0.8 l
• Dehumidifying output: 1.5 l/h
• Water level indicator
• Timer: 24 hours
• Sleep mode
• Controls: on-unit, remote control, app, and voice control
• Dust filter
• LED display
• Refrigerant: R290
• Temperature display
• Automatic vertical louvre swing
• Window sealing kit included
• Castor brake
• Motor power: 1,125 W
• Maximum noise level: 65 dB
• Voltage: 220–240 V ~ 50/60 Hz
• Connectivity: Wi-Fi, compatible with Amazon Alexa and Google Home
• Recommended room size: 42–56 m²
• Installation: mobile unit, no fixed installation required
• Unit type: portable air conditioner — ready to use straight out of the box

• Product dimensions: 36 x 42 x 69 cm (LxWxH)
• Weight: 29.9 kg
• Cable length: 1.5 m (Schuko plug)

Shipping time: 5 - 8 days