Best 12000 Btu 2026

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Last Updated - 22.07.2026

Best Choice

01

Kältebringer

Kühltebringer Split Air Conditioner 12000 BTU (3.7 kW) - with R290 Refrigerant, Heating Function, WiFi & App, up to 60 m², Very Quiet, 5 m Copper Cable, A+++, Mounting Material, Wall Mount

22% Off

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

WiFi ready: control of the split air conditioning also possible via app (iOS & Android), Alexa and Google Assistant. Control temperature, timer and modes from anywhere and save energy. Ideal for office & home.
Whisper-quiet operation: especially quiet thanks to external split outdoor unit. The sleep function ensures restful sleep - with only 19dB in sleep mode.
Innovation: As one of the first manufacturers, we offer air conditioners with R290 refrigerant (propane) and A+++ efficiency class on the European market.
Environmentally friendly and future-proof: natural R290 refrigerant (propane) with extremely low GWP of only 3 instead of 675 at R32. Not affected by EU F gas bans, especially efficient even at high outside temperatures and thanks to the gentle operation more durable for the compressor.
Box contents: 1 x R290 split air conditioner, pre-filled with R290 refrigerant (propane), mounting accessories, 5 m insulated copper cable, 1 x remote control, operating and assembly instructions (English language not guaranteed).

999,00 € 1.279,00 €(22% Off off)
02

SereneLife

SereneLife Inverter Air Conditioning Mobile 12000 BTU with WiFi, 4 in - Cool Heating, Dehumidifying, Air Conditioner with Drainage Hose and Window Kit, Auto Swivel, Quiet, up to 35 m²

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

QUICK INSTALL, READY TO USE: Mobile air conditioner with plug and play system and dual hose technology. The easy window installation with included kit allows a quick start - ideal for anyone looking for a flexible solution without a fixed installation.
Powerful 12,000 BTU inverter cooling for rooms up to 35 m²: Mobile air conditioning with 12,000 BTU (3.52 kW) cooling capacity for home, office, business or home office. Thanks to inverter technology, the device automatically adjusts the power to actual needs, cools rooms quickly and supports an even, comfortable room temperature – even on hot summer days.
IInverter technology for efficient and even climate comfort: The inverter compressor automatically regulates power instead of constantly switching on and off at full power. This keeps the desired temperature more evenly, the operation can be quieter and an efficient use of energy is supported. At only 44-49 dB, the device is ideal for bedrooms and home offices. WiFi app, remote control, 24-hour timer and LED display ensure high ease of use.
Compact, portable and thoughtful: lightweight mobile air conditioner with wheels for easy transport. With dimensions of 35.7 x 41.9 x 68.8 cm, it can be used flexibly. The automatic swing mode improves air distribution, while the removable filter makes cleaning easier and permanently supports fresh air.
4-in-1 Mobile Air Conditioner for Any Season: This mobile air conditioner combines cooling, heating, dehumidification and fan in one device. The inverter technology supports demand-based power control both when cooling and heating and ensures a pleasant feeling of space in different areas of application.

752,99 €
03

SereneLife

SereneLife Mobile Air Conditioning 12000 BTU, WiFi, 3-in-1 Cooling Dehumidification and Ventilation, Air Conditioner with Exhaust Hose, Window Kit, 3.52 kW for Rooms up to 40 m², Quiet Operation

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Powerful cooling for home: mobile air conditioner with 12000 BTU or 3.52 kW cooling capacity for rooms up to 40 m²; provides a reliable air conditioner for pleasant temperatures on hot days
Easy installation and flexible application: air conditioner for home with window kit and exhaust hose for quick setup without fixed assembly; suitable for home, office, school and commercial rooms and flexible use
Compact design and efficient performance: Energy efficient operation with dual motor, self-evaporation system and airflow of 370 m³ per hour; compact design with dimensions of 41.9 x 35.7 x 68.8 cm for modern living spaces
CONVENIENT CONTROL AND QUIET OPERATION: Control via WiFi app, remote control and LED display; allows precise adjustment of temperature, timer and fan levels at a noise level of only 48-51dB
3-in-1 function for versatile use: air conditioning apartment with exhaust hose combines cooling, dehumidifying and ventilation; reduces up to 1.5 litres of moisture per hour and noticeably improves air circulation and indoor climate

419,00 €
Value for Money

04

SereneLife

SereneLife Mobile Air Conditioner with Exhaust Hose, 12000 BTU WiFi, 4-in-1 Air Conditioning - Cooling/Heating/Ventilating/Dehumidifying, Digital Display, Timer and Window Kit, up to 35 m², for Hot

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quiet, efficient and smart controlled: Air conditioner with quiet operation of 48-51 dB(A), energy efficient consumption and WiFi control via app; includes remote control, 24 hour timer and sleep mode for quiet nights and concentrated work
Quick installation and easy operation: mobile air conditioner with plug and play operation and window kit for quick installation; LED display and intuitive control allow easy adjustment of temperature, timer and fan level; compatible with standard windows
Efficient cooling for hot summer days: mobile air conditioner with 3.52 kW cooling capacity for rooms up to 35 m²; ideal for home, office or school; quickly cools down in the heat and noticeably improves the indoor climate on warm days
COMPACT, MOBILE & THOUGHTFUL - Air conditioning with wheels for easy transport; Dimensions 16.5 x 14.1 x 27 inches; Automatic swing mode improves air distribution; Removable filter makes cleaning easier; Durable construction ensures long-lasting use
4-in-1 air conditioner for flexible use: air conditioner combines cooling, heating, dehumidifying and fan; provides fresh air and a balanced indoor climate, reduces moisture and adapts to different needs in everyday life; ideal for home office, guest room or smaller work areas

439,99 €
05

DIGIQUEST

DIGIQUEST Comodo 12000BTU Portable Air Conditioner, 4 in 1: Cold, Warm, Humidifier and Fan (3.5 kW and 2.5 kW), 24 Hour Timer, Night Mode, Space-Saving [Energy Class A]

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Suitable for rooms up to 26㎡ and easy to move thanks to practical 360° wheels and compact design. Dimensions: 420 x 360 x 722 mm
Portable monoblock air conditioner with heat pump, suitable for all seasons: cooling capacity 12000BTU - heating output 8500BTU
Night mode to use the air conditioner in quiet and energy-saving mode.
LED display, full fuel gauge, directional air vents and easy to clean dust filter. Sound power level: 65 dB
Included accessories: sliding kit for windows, 1.5 m extendable hose, adapter for air inlet, drain fitting and remote control
4 in 1: cold, warm, three-stage ventilation (400 m³/h) and dehumidification (up to 56 l/day)

359,93 €
06

Sannover

Split Wand-Klimaanlage, wendbar (heiß / kalt) 3,4 kW / 12000 BTU Osmozra Sannover

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Schnelles und gleichmäßiges Kühlen und Erhitzen
Leiser Komfort dank integriertem Silence Modus
Intuitive Steuerung mit vollständiger Fernbedienung
Die perfekte Lösung für Räume bis zu 40 m²
Ausgezeichnete Energieeffizienz zur Kostensenkung

388,99 €
07

$Tornado Climatiseur Portable 12000 BTU, Pompe À Chaleur, Wi-Fi, 3500 W Refractive Dissement, 3299 W Chaufage, Modèle TPYAB-12ABG$

$Tornado Climatiseur Portable 12000 BTU, Pompe À Chaleur, Wi-Fi, 3500 W Refractive Dissement, 3299 W Chaufage, Modèle TPYAB-12ABG$

$Tornado Climatiseur Portable 12000 BTU, Pompe À Chaleur, Wi-Fi, 3500 W Refractive Dissement, 3299 W Chaufage, Modèle TPYAB-12ABG$

$Tornado Climatiseur Portable 12000 BTU, Pompe À Chaleur, Wi-Fi, 3500 W Refractive Dissement, 3299 W Chaufage, Modèle TPYAB-12ABG$

Tornado

Tornado Climatiseur Portable 12000 BTU, Pompe À Chaleur, Wi-Fi, 3500 W Refractive Dissement, 3299 W Chaufage, Modèle TPYAB-12ABG

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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TPYAB-12ABG

584,90 €
08

COMFEE'

Comfee Breezy Cool Pro 2.6 Mobile Air Conditioner, 9,000 BTU, 2.6 kW, Cooling, Ventilating & Dehumidifying, App Control, Room Size up to 88 m³ (33 m²), with Exhaust Hose

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smaller volume, stronger airflow: 4-way air inlet, stronger airflow, better cooling performance. Despite a size reduction of over 30%, the airflow is increased by 40% thanks to the innovative 4-way air inlet.
Patented cooling technology: Thanks to the patented cooling technology, which uses condensation to cool the compressor, no additional water tank is required. The mobile air conditioner delivers constant and energy-efficient performance, even during continuous operation under a wide range of humidity conditions.
Comfee ‘Follow Me’: Easy to move: Perfect feel-good temperature. The remote control equipped with a temperature sensor controls the room temperature. If the remote control is nearby, the device automatically takes care of your personal feel-good temperature.
Climate-friendly R290 refrigerant: R290 is a natural refrigerant. It has no ozone depletion potential, only a low global warming potential (GWP) and is energy-saving and efficient in operation.
App-ready: The 3-in-1 air conditioner can be flexibly controlled via the app, voice control (Alexa/Google Voice Assistant) or the included remote control.

284,99 €
09

SereneLife

SereneLife Mobile Air Conditioning 12000 BTU - Small Air Conditioner for Rooms up to 51 m² | WiFi | Cooling, Dehumidifier & Fan | 48 dB

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

You hardly hear that — 48-51 dB(A): quieter than a normal conversation. While other air conditioners make the night a noise experience, the SereneLife dual motor runs so quietly that you simply forget it. Sleep mode and automatic wind swing regulate temperature and air distribution independently - so you sleep, not sweat.
Wherever the heat hits you — bedroom, home office, caravan, motorhome or campsite — this compact air conditioner rolls with you. Roller wheels, 1.49 m connection hose and tool-free assembly mean: set up, connect, cool down. No fixed installation, no compromises.
Full control, anywhere: connected to the SereneLife app via WLAN you can control your portable air conditioner from bed, office or on the go - temperature, ventilation level, timer, everything via smartphone. iOS & Android compatible. Complete contents: 1.49 m exhaust hose, window kit, remote control and 1.00 m drain hose. Simply unpack, turn on, relax.
Finally cool nights again — stuffy heat was yesterday. This mobile air conditioner cools your room quickly and evenly to your desired temperature — with 7,000 BTU cooling capacity, 370 m³/h air flow and three modes: cooling, dehumidifying and fan. Simply set up, turn on, breathe a sigh of relief.
Assembled before the next welding shaft arrives — No technician, no tools, no queue. Attach the window kit, plug in the exhaust hose, done. The integrated self-evaporation system automatically releases condensation - no water tank, no manual emptying. The 24-hour timer cools the room before you arrive.

419,99 €
10

SereneLife

SereneLife Mobile Air Conditioning 12,000 BTU with Heating Function - Small Air Conditioning for Rooms up to 32 m² | WiFi | Cooling, Heating, Dehumidifier & Fan | 48 dB | Grey

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

You hardly hear that — 48-51 dB(A): quieter than a normal conversation. While other air conditioners make the night a noise experience, the SereneLife dual motor runs so quietly that you simply forget it. Sleep mode and automatic wind swing regulate temperature and air distribution independently - so you sleep, not sweat.
WiFi control via SereneLife app, remote control and touch display — 24-hour timer for automatic cooling start, compatible with iOS and Android.
Wherever the heat hits you — bedroom, home office, caravan, motorhome or campsite — this compact air conditioner rolls with you. Roller wheels, 1.49 m connection hose and tool-free assembly mean: set up, connect, cool down. No fixed installation, no compromises.
Tool-free installation in under 10 minutes thanks to universal window kit and 1.49m exhaust hose - ideal for renters without permanently installed air conditioning.
Quiet dual motor with only 48-51dB(A) and sleep mode for restful sleep without annoying operating noise in bedroom or home office.
Mobile air conditioner with 12,000 BTU cooling capacity for quick cooling in the room — four modes: cooling, dehumidifying heating and fan for year-round comfort.
Full control, anywhere: connected to the SereneLife app via WLAN you can control your portable air conditioner from bed, office or on the go - temperature, ventilation level, timer, everything via smartphone. iOS & Android compatible. Box contents: exhaust hose, window kit, remote control and drain hose. Simply unpack, turn on, relax.
Finally cool nights again — stuffy heat was yesterday. This mobile air conditioner cools your room quickly and evenly to your desired temperature — with 12,000 BTU cooling capacity, 370 m³/h air flow and four modes: cooling, heating, dehumidifying and fan. Simply set up, turn on, breathe a sigh of relief.
Built-in self-evaporation system releases condensation automatically — no manual emptying, no water tank, no hassle.
Assembled before the next welding shaft arrives — No technician, no tools, no queue. Attach window kit, insert 100mm exhaust hose, done. The integrated self-evaporation system automatically releases condensation - no water tank, no manual emptying. The 24-hour timer cools the room before you arrive.

479,99 €