Grandbreeze Smart 12000 BTU Portable Air Conditioner Black
New

Grandbreeze Smart 12000 BTU Portable Air Conditioner Black

New
799,99 € (incl. VAT)
Product number: 10048074
Grandbreeze Smart 12000 BTU Portable Air Conditioner Black
799,99 € (incl. VAT)
  • This item is not in stock and must be reordered. In stock and ready for you! Order now and enjoy your purchase without delays. This item is currently out of stock. Leave us your email and we’ll notify you once it’s available!
  • 14 day cooling off period

Top features

  • Cools larger rooms without breaking a sweat: With 12,000 BTU of cooling power and energy efficiency class A+, the Grandbreeze handles rooms up to 56 m² — drawing just 1.1 kWh per hour to do it.

  • Air con, fan, and dehumidifier — all in one: The Grandbreeze works as a full air conditioner, a fan, and a dehumidifier — pulling up to 1.5 litres of moisture per hour from the air — so there's no need to buy or store separate devices.

  • Smart control from wherever you are: Full Amazon Alexa and Google Home integration means you can set the temperature, change mode, or programme the timer by voice or via the Klarstein app — even before you leave work.

  • Quiet enough for a good night's sleep: At a maximum of 65 dB, the Grandbreeze runs unobtrusively in the background. The dedicated sleep mode adjusts cooling automatically through the night so you're not woken by the noise or a chill.

  • Move it wherever you need it: No engineer, no drilling, no fixed installation — the Grandbreeze rolls easily between rooms on locking castors, and the included telescopic exhaust hose and window sealing kit get it up and running in minutes.

Product description

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.

Features

  • 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 number: 10048074

Dimensions and Technical Details

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

What will be delivered?

  • 1x portable air conditioner
  • 1x remote control
  • 1x window sealing kit
  • 1x adapter
  • 1x exhaust hose (15 x 150 cm)
  • 1x hose connector
  • 1x drain pipe
  • mounting hardware
  • multilingual instruction manual
  • Batteries are not included

Delivery & shipment

This item is not in stock and must be reordered.

Frequently asked questions

Customer reviews
9 Ratings
Product reviews
Verified review 29/06/2026

Klarstein Grandbreeze Smart Potable Air Conditioner 16000 BTU Beast Of A Cooling Machine!!!

I already had a DeLonghi portable air conditioner with 11,500k BTU cooling capacity which I regularly move from my living room to my bedroom every night during the heatwave seasons which unfortunately not powerful enough for my 270sq ft living room but perfect for my 168sq ft bedroom.

I now recently bought the Klarstein Grandbreeze Smart 16000 BTU Portable Air Conditioner Black to use in my living room only. After using this for a couple of hours, it chills like a pro! Dropped 28°C to 22°C in 20 mins on High, so cooling is top-notch. The 16k BTU output is no joke — it’s a proper unit.

Noise is where placement matters:
- On High @ 1m = 61 dB (like a fridge + fan).
- On Low @ 1m = 58dB also (like a fridge + fan).
- On Sleep mode = 48-50 dB (library quiet).

Pros:
- Serious cooling power for the price — chills a 30m² room no problem_
- App control + WiFi works well from Cheltenham to phone abroad_
- Build feels sturdy (vs cheaper 12k models)
- Comes with decent window kit + remote
- Drainage is easy via hose tap_
- Timer + multiple modes (Eco/Turbo/Sleep)

Cons:
- Hose is short (1.5m), don’t expect to move it far from window.
- No condensation tank level indicator (just a red light when it’s full)
- Klarstein’s UK support is email and live chat on website only (no phone help)

Overall: If you’ve got space + position it right, this is a beast. 5 stars from me *****

Product reviews from other countries
14/07/2026

La clim est prévue pour 65m2, elle a beaucoup de difficulté a refroidir ma pièce principale de 30m2.....elle tourne en permanence a 21 degrés au maximum et impossible a descendre en dessous de 25.....très déçu de mon achat.

07/07/2026

Bonjour reçu après une semaine j’ai eu de la chance vue les problèmes de stock moi je le recommande avec mon autre climatiseur ils refroidisse mon living de 80 m kare super bien 24 degrés par grande chaleur je recommande

Verified review 02/07/2026

Très bon produit, conforme à la description. Par contre je n'ai jamais réussie à le connecter au wifi et l'associer sur l'application. Si quelqu'un à réussie je suis preneuse d'un peu d'aide :)

Verified review 01/07/2026

Die Anlage wird über einen unseriösen Versanddienstleister versendet "trans-o-flex Express GmbH" wo mir einfach jeden Tag der Aktuelle Tag als Liefertag angezeigt wird. Die Telefonnummer auf der Klarstein.de Rechnung exestiert nicht. Der Kundenchat hat nur einen Bot der Rückrufe anbietet die es wiederrum nicht gibt. Seriös sieht anders aus.

Verified review 27/06/2026

Die Kühlleistung der Klimaanlage ist meiner Meinung nach doch sehr ordentlich. Bei meiner offenen Dachgeschoss Wohnung 58 qm Fläche ( mit teil offenem Deckenbereich zur Dachgaube hin ) lag die Innenraumtemperatir bei 34°. Die Klimanlage hat es relativ zügig geschafft auf 30° runter zu kühlen ( bei 39° Außentemperatur wohl gemerkt und meine Wohnung war mit einer Wärmelast schon vorbelastet durch die 34° ). Die Klimaanlage war dann auch sehr gut in der Lage die 30° zu halten bis zum Ende des Abends. Sobald es draußen kälter wurde kühlte die Klima auch wieder herunter. Sie lief unter extremen Bedingungen 39° Außentemperatur das darf man nicht vergessen

Verified review 27/06/2026

Excellent produit et d’une grande efficacité. Séjour 35m2. Malgré la canicule des derniers jours, 39 sur le balcon plein sud séjour à 25 degrés constant. Autant faut il poser le calfeutrage fourni avec.

Verified review 26/06/2026

Le climatiseur fonctionne bien il n est pas plus bruyant qu un autre climatiseur mobile, il refroidit bien , le seul point negatif que je trouve est que je n ais pas reussi a le regler en wifi.

Verified review 26/06/2026

Le climatiseur fonctionne bien il n est pas plus bruyant qu un autre climatiseur mobile, il refroidit bien , le seul point negatif que je trouve est que je n ais pas reussi a le regler en wifi.