Best 12000 Btu 2026

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Last Updated - 03.02.2026

Best Choice

01

KESSER

KESSER® Split Air Conditioner Set Quick Connect 12000 BTU 3.4 kW - WiFi & App Air Conditioner with Heating Function & Cooling Mode Wall Air Conditioning with Copper Line Refrigerant R32 Includes

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30% Off
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

Versatile use: the KESSER air conditioner is the ideal solution for a wide range of environments, from living rooms and bedrooms to offices and workshops. It not only provides cooling, but also efficient heating and dehumidification. With an oscillation function, it ensures even air distribution in the room.
Smart control: control the KESSER air conditioner conveniently via app. Adjust the temperature and choose between 5 modes (cooling, drying, ventilation, eco, heating). Enjoy a perfect indoor climate at any time, whether at home or in the office, and benefit from modern WiFi technology for maximum flexibility.
Powerful and efficient: the KESSER air conditioner is equipped with a power of 9000 BTU (2600 W) or 12000 BTU (3400 W) and offers a strong air flow of 420 m³/h or 550 m³/h. This high performance ensures fast cooling and efficient heating, ideal for different room sizes and applications.
Easy to install: thanks to the practical Quick-Connect technology, the KESSER air conditioner can be installed quickly and easily. No need to bleed or vacuum pump. With the included mounting accessories, you can start the device immediately without complicated preparations.
Durable and low-maintenance: the KESSER air conditioner is equipped with a fine gold coating that protects the device from corrosion and makes cleaning easier. This durable technology ensures that the device has a long service life even under intensive use, while keeping maintenance to a minimum.

537,80 € 769,80 €(30% Off off)
Value for Money

02

KESSER

KESSER® Split Air Conditioner Set Quick Connect 12000 BTU 3.4 kW - WiFi & App Air Conditioner with Heating Function & Cooling Mode Wall Air Conditioning with Copper Line Refrigerant R32 Includes

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30% Off
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

Versatile use: the KESSER air conditioner is the ideal solution for a wide range of environments, from living rooms and bedrooms to offices and workshops. It not only provides cooling, but also efficient heating and dehumidification. With an oscillation function, it ensures even air distribution in the room.
Smart control: control the KESSER air conditioner conveniently via app. Adjust the temperature and choose between 5 modes (cooling, drying, ventilation, eco, heating). Enjoy a perfect indoor climate at any time, whether at home or in the office, and benefit from modern WiFi technology for maximum flexibility.
Powerful and efficient: the KESSER air conditioner is equipped with a power of 9000 BTU (2600 W) or 12000 BTU (3400 W) and offers a strong air flow of 420 m³/h or 550 m³/h. This high performance ensures fast cooling and efficient heating, ideal for different room sizes and applications.
Easy to install: thanks to the practical Quick-Connect technology, the KESSER air conditioner can be installed quickly and easily. No need to bleed or vacuum pump. With the included mounting accessories, you can start the device immediately without complicated preparations.
Durable and low-maintenance: the KESSER air conditioner is equipped with a fine gold coating that protects the device from corrosion and makes cleaning easier. This durable technology ensures that the device has a long service life even under intensive use, while keeping maintenance to a minimum.

537,80 € 769,80 €(30% Off off)
03

Zstar

Mobile Air Conditioning 12000 BTU 2.6 kW, Cooling & Ventilation & Dehumidifying, Mobile Air Conditioner with Exhaust Hose for Rooms up to 117 m³ (43 ㎡), Quiet Operation <53 dB, Digital Display +

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9.3

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

Portable and practical: with the smooth-running wheels, this mobile air conditioner can be moved effortlessly from room to room and provides cooling wherever you need it. No heavy lifting required - just set up and enjoy the comfort.
High performance and energy saving: with efficiency class A, the air conditioner is particularly energy-efficient and environmentally friendly. It significantly reduces energy consumption, which not only protects the environment, but also reduces electricity costs. This makes the air conditioner a sustainable choice for environmentally conscious users who value high performance and energy savings.
Fast Cooling Power The 12000 BTU mobile air conditioner cools rooms up to 550 square feet quickly and provides instant relief on hot days. Ideal for rooms, living rooms, bedrooms and offices.
EFFORTLESS CONTROL Portable air conditioner with a convenient 24-hour timer function, an adjustable thermostat and an intuitive LED display, this air conditioner is designed for easy operation. This ensures a cool and restful night's sleep without unnecessary energy consumption.
3-in-1 functionality: mobile air conditioner with exhaust hose, cooling and dehumidifying and ventilation. These versatile applications allow you to design the indoor climate according to individual needs, whether it is to cool down on hot summer days, regulating humidity or simply providing fresh air.

156,64 €
04

E EUHOMY

EUHOMY Mobile Air Conditioner 12000 BTU with Exhaust Hose, 3-in-1 Mobile Air Conditioner: Cooling, Dehumidifying, Ventilating, 4-Level Fan, 410 m³/h, Energy Efficiency Class A, <50 dB, 24 Hour Timer

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9.2

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

Flexible in any room: with 4 x 360° wheels and 2 handles, the mobile air conditioner can be easily rolled into the kitchen, home office or garden shed. The included window sealing kit (for 68-126 cm windows) is tool-free assembled in 10 minutes. Removable filters allow easy cleaning for long-term hygiene.
Energy efficiency class A and sustainability: the mobile air conditioner meets the highest environmental standards: with the environmentally friendly refrigerant R290 (lower greenhouse gas emissions) and A certification, it combines performance with sustainability - perfect for climate-conscious households.
410 m³/h for quick cooling: the air conditioner with exhaust hose offers 4 fan levels (410/360/270 m³/h + auto) and a 33°-90° swivel mechanism. The "hurricane mode" balances room temperatures in an instant, while the silent mode guarantees quiet stability. Automatic vertical/horizontal ducting avoids direct drag (perfect for desks or sofas), side focusing ensures "strong cooling without unpleasant airflows".
4-in-1 air management: one push of a button switches between cooling, dehumidifying, airing and sleep mode. Dehumidification mode: keeps 55% humidity in summer, protects against mould. Sleep mode: reduces noise to 49 dB(A) at night and gently increases the temperature to prevent cold. Smart functions: 24 hours. -T-Timer - -T-Timer accidental switching. Easy to use: Intuitive LED touch panel and remote control - also suitable for seniors and children
12,000 BTU ultra strong cooling performance: the mobile air conditioner with modern compressor technology delivers 12,000 BTU cooling power for rooms up to 25 m² (living rooms, bedrooms, offices). In turbo mode, it reaches a cool 16°C in just 30 minutes. Thanks to the wide temperature range (16-31°C) and ±1°C accuracy, it intelligently adapts to day-night fluctuations - ideal for sensitive areas such as children's rooms or hot gyms.

397,49 €
05

HANTECH

TCL Split Air Conditioner 12000 BTU BreezeIN with Voice Control, WiFi for Rooms up to 45 m², 4-in-1: Heating, Cooling, Dehumidifying, Ventilating Update: Improved Energy Efficiency 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

New technology: The TCL BreezeIN 2.0 impresses with outstanding energy efficiency class A+++ – both in cooling and heating mode.
Intelligent 3D / 4-way air flow directs the air in all directions and thus achieves an even temperature distribution throughout the room. Draught-free cooling provides more comfort. Cold direct air flows are avoided.
INFFO: A 230 V household voltage near the outdoor unit is required for operation. The indoor unit is powered by an electric cable from the outdoor unit. Thanks to the latest inverter technology with precise speed adjustment with low power consumption and permanent room temperature monitoring, a pleasant, even climate is guaranteed. Evacuating the cables by an air conditioning technician is mandatory for permanent trouble-free operation.
Easy to use: connect your air conditioner easily to TCL Home, Google Assistant and Alexa - for convenient and smart control via app or voice command. A remote control is included.
Durable: 5-year TCL manufacturer's warranty. The self-cleaning function keeps the device hygienic and efficient. With the sleep mode, you can achieve pleasantly quiet operation, so that they are not disturbed at night. The environmentally friendly R32 air conditioning gas guarantees sustainable cooling.
Additional features: I-Feel, 24-hour timer, intelligent airflow or sleep mode offer tailor-made settings for your comfort and health. Choose TCL and enjoy a premium air conditioning solution.

415,00 €
06

Radiola

Mobile Air Conditioner, 12000 BTU, 65 dB, Electronic Control, 44 x 33.5 x 71.5 cm, White RACLI124ER RADIOLA

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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

Technical details: noise level of 65 dB, mobile design with white housing for flexible use of space
Performance: Powerful 12000 BTU cooling performance for effective room air conditioning in medium to large rooms
Energy efficiency: energy efficiency class A for economical operation and optimal cooling performance
Dimensions: compact dimensions of 44 x 33.5 x 71.5 cm, ideal for flexible placement in the room
CONTROL: User-friendly electronic control for precise temperature setting and easy operation

319,00 €
07

KGOGO

Mobile Air Conditioning 12000BTU, 3-in-1 Mobile Air Conditioner with Exhaust Hose, Cooling, Dehumidifying, Air Circulation, LED Display & Remote Control, 24-Hour Timer, Quiet and Energy Efficient, for

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8.9

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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Main highlights

️【All accessories included】Everything you need for setup is included: 1 x exhaust hose, 1 x hose connection, 1 x window adapter, 1 x remote control, 1 x window kit, 1 x screw, 1 x drain hose, 1 x user manual (English language not guaranteed)
️【3-in-1 function: air conditioning, fan & dehumidifier】To improve your room air, this mobile air conditioner also takes over the functions of a fan and a dehumidifier. Lower the temperature to up to 16 C, improve air circulation with two fan speeds or dehumidify the room air to keep humidity between 40% 60%
User-friendly, thoughtful design: a 24-hour timer of the mobile air conditioner allows you to set the automatic on/off time. Prepare a cool room before you get home, or save energy when it gets cooler at night. Enjoy a quiet, restful environment with the sleep mode that dims the LED lights and lowers the noise level for better relaxation
Reliable customer support: We offer you 24/7 customer service to ensure a worry-free experience. Your satisfaction is our top priority - feel free to contact us at any time
Portable air conditioning, powerful cooling: equipped with an advanced air compressor, this portable air conditioner delivers a cooling capacity of up to 12,000 BTU and immediately lowers the temperature in rooms up to 43 m². Create a cool and comfortable environment in your bedroom, living room, office, basement or work area
LED display and remote control: easily monitor the current temperature with the bright LED digital display. The user-friendly control panel and included remote control allow you to switch modes, set timers, and adjust temperatures - whether you are near or further away
Compact and easy to install: the window kit fits most sliding windows, without drilling, and the holder for the power plug ensures tidy cable routing

179,80 €
08

Hantech

Split Air Conditioner 12000 BTU Quick Connect with WiFi and Optional Voice / App Control

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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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Main highlights

START HOME INTEGRATE: Keep your room climate under control – whether from the couch or on the go. Control all functions classically via remote control or conveniently via the TCL Home app directly from your smartphone or tablet. It is compatible with Alexa and Google voice assistants.
Quality and easy to install: with the practical QC system, the installation of the TCL BreezeIN is child's play. The pre-assembled, pre-filled refrigerant lines with self-sealing quick couplings allow a safe and clean connection between indoor and outdoor units - without vacuuming or compartment tools.
Quick and easy to use: thanks to the integrated turbo mode, rooms are cooled / heated twice as fast as conventional devices. In addition, there is an 8°C frost protection mode, which keeps your rooms constant at 8°C in winter when the function is switched on, so that walls and pipes remain protected. Ideal for holidays or holiday homes.
Great space: a powerful air filter in the upper device area effectively removes dust particles, allergens and other airborne impurities. Ideal for allergy sufferers and health conscious. Even in high summer at outdoor temperatures up to 50°C, the device runs reliably.
Exhaustible and easy to use: air circulation, dehumidification, heating, cooling. You make the decision. A sleep mode with automatic prevention of hypothermia are also integrated. In this mode, the device is no louder than a whisper.
Easy care and durability: The TCL BreezeIN has been developed with a particularly easy to clean construction. Filters, air guide fins and housing parts open and clean without tools - for quick access and easy care.

525,00 €
09

Cecotec

Cecotec - Mobile Klimageräte ForceClima 12650 Style Heating, 12000 BTU, Abdeckungsbereich 28 m2, Fernbedienung, Berührung, Wärmepumpe, Luftentfeuchter, LED -Bildschirm, 5 Modi, Timer

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8.7

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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Main highlights

Timer: Program the operation of your fan for a maximum of 24 hours. After the time has elapsed, the air conditioner turns off.
Remote Control: Conveniently control the air conditioner from anywhere. With the touch control panel, you can control the operation of air conditioning conveniently and easily. Heat pump: use it even in winter to increase the temperature of the room in which it is placed. LED display: you can check all possible settings at a glance.
Large capacity: portable air conditioner with a cooling capacity of 12000 BTU, which is equivalent to 3000 refrigerators. Reaches the desired temperature on the room quickly and effectively. The effective area of 28 m² allows it to be used in large rooms.
5 operating modes: fan mode, cooling mode, heating mode, dehumidification mode (can catch up to 29 litres per day) and night mode. 2 air conditioning speeds: adjusts its operation to suit your needs. You can choose between low and high speed.

339,00 €
10

Cecotec

Cecotec - Mobile Klimageräte ForceClima 12650 Style Heating, 12000 BTU, Abdeckungsbereich 28 m2, Fernbedienung, Berührung, Wärmepumpe, Luftentfeuchter, LED -Bildschirm, 5 Modi, Timer

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8.6

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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Main highlights

Timer: Program the operation of your fan for a maximum of 24 hours. After the time has elapsed, the air conditioner turns off.
Remote Control: Conveniently control the air conditioner from anywhere. With the touch control panel, you can control the operation of air conditioning conveniently and easily. Heat pump: use it even in winter to increase the temperature of the room in which it is placed. LED display: you can check all possible settings at a glance.
Large capacity: portable air conditioner with a cooling capacity of 12000 BTU, which is equivalent to 3000 refrigerators. Reaches the desired temperature on the room quickly and effectively. The effective area of 28 m² allows it to be used in large rooms.
5 operating modes: fan mode, cooling mode, heating mode, dehumidification mode (can catch up to 29 litres per day) and night mode. 2 air conditioning speeds: adjusts its operation to suit your needs. You can choose between low and high speed.

179,90 €