Grandbreeze 12000 BTU mobile air conditioner
New

Grandbreeze 12000 BTU mobile air conditioner

New
£ 629.99 (incl. VAT)
Product number: 10048073
Grandbreeze 12000 BTU mobile air conditioner
£ 629.99 (incl. VAT)
  • Ready for delivery In stock and ready for you! Order now and enjoy your purchase without delays. In stock and ready for you! Order now and enjoy your purchase without delays.
  • Shipping time: 5 - 8 days Receive it sooner than you think. Don’t miss this opportunity, order now! Receive it sooner than you think. Don’t miss this opportunity, order now!
  • 14 day cooling off period

Top features

  • Cools rooms that other portables struggle with: With 12,000 BTU of cooling power and energy efficiency class A+, the Grandbreeze handles spaces up to 56 m² — all for just 1.1 kWh per hour.

  • Air conditioning, fan, and dehumidifier — all in one: Switch between air conditioning, fan-only, and dehumidifier mode as the day demands — no need for separate devices cluttering your space.

  • Voice and app control from anywhere: Fully compatible with Amazon Alexa and Google Home, the Grandbreeze responds to voice commands and connects to the Klarstein app — so you can set the temperature before you've even left the office.

  • Uninterrupted sleep on hot nights: Night Mode automatically adjusts cooling output and runs at a maximum of 65 dB — quiet enough for bedrooms so you wake up rested, not groggy.

  • No installation, no hassle: The telescopic exhaust hose and window sealing kit are included, and lockable castors let you roll the Grandbreeze from room to room in seconds — no engineer, no drill, no delay.

Product description

Summer in the UK might not always be blazing, but when the heat hits — a stuffy bedroom at midnight, a home office that turns into a greenhouse by 2pm — you need something that actually works. The Klarstein Grandbreeze is a portable air conditioner built for bigger spaces: rooms up to 56 m² cool down to a temperature you choose, no installation, no engineer, no fuss.

At 12,000 BTU (3.5 kW), this is serious cooling power. Energy efficiency class A+ keeps running costs in check at just 1.1 kWh per hour, with a standby draw of only 0.5 W. An airflow of 390 m³/h pushes cool air right across the room, and the automatic vertical louvre sweep ensures it reaches every corner. Set your preferred temperature anywhere between 18 and 32 °C, choose from three fan speeds, and let the Grandbreeze do the rest.

It's a 3-in-1 unit: air conditioner, fan, and dehumidifier in a single device. The dehumidifier pulls up to 1.5 l/h of moisture from the air — useful during those muggy British summers — and the 0.8-litre water tank handles it automatically until it reaches capacity, with a water-level indicator so you're never caught off guard. A built-in dust filter keeps the air clean, and the 24-hour timer and Night Mode mean the Grandbreeze adapts to your day without any input from you.

Control it however suits you. The Klarstein app lets you adjust temperature, mode, and timer from your phone — handy for getting the living room cool before you even walk through the door. Amazon Alexa and Google Home are fully supported, so a quick voice command is all it takes. The R290 refrigerant used has a low global warming potential and is among the more energy-efficient choices in its appliance class.

The Grandbreeze is designed for flats, home offices, and hotel rooms in the 42–56 m² range — anywhere a fixed air conditioning system isn't an option. The telescopic exhaust hose and window sealing kit are included in the box, and the lockable castors roll smoothly across any floor surface, so moving it from room to room takes seconds.

Stay cool this summer with the Klarstein Grandbreeze — order yours today and enjoy your home at the right temperature, whatever the weather throws at you.

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+
  • Installation: vertical (freestanding)
  • Operating modes: cooling, dehumidifying, fan
  • Air 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
  • Night Mode
  • Controls: on-unit controls, remote control, app, and voice control
  • Dust filter
  • LED display
  • Refrigerant: R290
  • Temperature display
  • Automatic vertical louvre sweep
  • 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
  • Device type: portable air conditioner — ready to use straight from the box
Product number: 10048073

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

Ready for delivery

Shipping time: 5 - 8 days

Customer reviews
1 Rating

No review available for this item.

Product reviews from other countries
Verified review 27/05/2026

ALL KLARTSEIN OR ELECTRONIC STAR OR CHALTECH !!! SAHME ON YOU! WE ARE HUMAN PEOPLE NEED HUMAN ANSWER. (FOR THAT PRICE!) NO ONE HUMAN TO TALK!!! AND A BOT SO BAD... it's quite amazing how it does'nt work! IT GIVE NO ONE RIGHT ANSWER !!!! UNBELIEVABLE ! A TOTAL WAIST OF TIME! JE SUIS VRAIMENT CHOQUE DU MANQUE DE CONSIDERATION QUE VOUS AVEZ POUR VOS CLIENTS! CE N'EST ABSOLUMENT PAS AU POINT ET certainement pas pour application avec vos clients... IL ne reponse que des choses erronnées et est totalement limité. A CE PRIX j'achete une marque et un service apres vente. TOTALE DECEPTION! et PERTE DE TEMPS! IMPOSSIBLE DE JOINDRE UN HUMAIN QUI AURAIT PU ME REPONDRE EN 1 MINUTE. J'ai perdu 4h... VOTRE BOT ME REPETE DES INFORMATIONS TOTALEMENT ERRONEES (EN BOUCLE) SUR LES PRODUITS JE SOUHAITE PARLER A UN HUMAIN QUI PEUT ME RENSEIGNER SUR LES CLIMATISEURS. VOTRE SYSTEME N'EST PAS DU TOUT INTUITIF ET EXTREMENT FRUSTRANT POUR VOS CLIENTS!!! MERCI DE PENSER A CEUX QUI SONT OBLIGES D'UTILISER VOTRE CHATBOT TOTALEMENT INEFFICACE ET INUTILE. CELA FAIT 4H que je cherche a joindre un humain... EVIDEMENT LE STANDARD EST INJOIGNABLE. Ca promet pour la suite! HONTEUX, tout simplement! CORDIALEMENT, RH

ALL KLARTSEIN, ELECTRONIC STAR, OR CHALTECH!!! SAHME ON YOU! WE ARE HUMAN PEOPLE, WE NEED HUMAN ANSWERS. (FOR THAT PRICE!) NOT A SINGLE HUMAN TO TALK TO!!! AND A BOT SO BAD... it's quite amazing how it doesn't work! IT GIVES NO ONE RIGHT ANSWER!!!! UNBELIEVABLE! A TOTAL WASTE OF TIME! I AM TRULY SHOCKED BY THE LACK OF CONSIDERATION YOU HAVE FOR YOUR CUSTOMERS! IT IS ABSOLUTELY NOT READY AND certainly not for use with your customers... It only gives incorrect answers and is totally limited. AT THIS PRICE, I buy a brand and after-sales service. TOTAL DISAPPOINTMENT! AND A WASTE OF TIME! IMPOSSIBLE TO REACH A HUMAN WHO COULD HAVE ANSWERED ME IN 1 MINUTE. I've wasted 4 hours... YOUR BOT KEEPS REPEATING COMPLETELY WRONG INFORMATION ABOUT THE PRODUCTS. I WANT TO SPEAK TO A HUMAN WHO CAN TELL ME ABOUT AIR CONDITIONERS. YOUR SYSTEM IS NOT AT ALL INTUITIVE AND EXTREMELY FRUSTRATING FOR YOUR CUSTOMERS!!! PLEASE THINK ABOUT THOSE WHO ARE FORCED TO USE YOUR COMPLETELY INEFFECTIVE AND USELESS CHATBOT. I'VE BEEN TRYING TO SPEAK TO A HUMAN FOR 4 HOURS... OF COURSE, THE CUSTOMER SERVICE IS UNREACHABLE. This doesn't bode well for the future! SHAMEFUL, simply! SINCERELY, RH