Best 12000 Btu 2026

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Last Updated - 27.03.2026

Best Choice

01

Midea

Midea Portasplit Air Conditioning, Mobile Heat Pump, Cooling A++/Heating A+, 12000 BTU 3.5 kW, for Rooms up to 42 m² / 105 m³, Only 39 dB(A) in Silent Mode

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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

【Unobtrusive design, ideal for rooms up to 42 square metres】Perfect for living room or bedroom. The ultra-slim exhaust pipe (2.7 cm) is virtually invisible and can be installed on sloping windows - for optimal performance without drilling or major renovation jobs.
【Plug and Play Simplicity - No Installation Required】Unpack and use immediately! Simply insert the connecting hose into the window, seal it, connect the device to the power supply and enjoy instant convenience. No professionals are required. Achieve a perfect indoor climate within minutes.
Inverter and heat pump: intelligent efficiency: the inverter motor saves energy while ensuring more stable temperatures. The heat pump heater is more economical and effective than many electric heaters.
Four in one multifunctional device for year-round use: one device provides cooling (12,000 BTU/3.5 kW), heat pump heating, dehumidification and ventilation. A compact all-in-one solution that efficiently fights summer heat and winter chill.
Exceptionally quiet - only 39 decibels in night mode: Enjoy undisturbed sleep and concentrated work. In night mode, the device operates at less than 39 dB(A) – quieter than a whisper – making it the perfect solution for quiet rooms.
Easy control via app or remote control: temperature and modes can be easily adjusted. The free smartphone app and intuitive remote control make climate control remarkably easy.

899,00 €
02

Kältebringer

Kältebringer Split Air Conditioner - 12000 BTU (3.5 kW) - Air Conditioner with Heating Function, WiFi & App, up to 55 m², Very Quiet - Set with 5 m Copper Cable, Refrigerant R32, Mounting Material,

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10% 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

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.
High performance: this air conditioner has a SEER value of 6.4 & SCOP 4.1 for efficient heating. Full inverter technology minimizes energy loss, keeps temperature constant and ensures low operating costs.
Future safe: complete set with 5 m insulated refrigerant lines, mounting material, wall bracket and R32 refrigerant pre-filled. Meets the standard from 2025.
Energy efficient: the split air conditioner adapts smoothly thanks to the DC full inverter, saves up to 50% energy and reaches A++ (cooling) and A+ (heating). TitanGold coating increases longevity.

584,10 € 649,00 €(10% Off off)
Value for Money

03

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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34% 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.

507,80 € 769,80 €(34% Off off)
04

HANTECH

Split Air Conditioning 12000 BTU (up to 45 m²) HANTECH H-PRO Heating and Cooling Function, Air Filter, WiFi, Mounting Material, White

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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

Modes: sleep mode in whisper volume or 4 different speed settings
I-Feel: Temperature sensor on the remote control and not on the device. The desired temperature is therefore achieved throughout the room.
Eco and turbo mode: quick results when switched on or slow room temperature adjustment and save energy
Complete set: indoor and outdoor unit, including mounting accessories and pre-filled climate agent (R32)
Care: self-cleaning and easy maintenance
Benefits: child lock, emergency stop switch on the device, timer, remote control, frost protection mode, hypothermia protection in sleep mode
4 in 1: Use as a heater, air conditioner, dehumidifier and fan including filtering of viruses, bacteria and odours
3D airflow and circulation: perfect for positioning over couch etc. The air flow is distributed specifically throughout the room and is not selective.

479,00 €
05

Shinco

SHINCO Mobile Air Conditioner with Exhaust Hose, 12000BTU, 3.5 kw, Cooling, Ventilating and Dehumidifying, Mobile Air Conditioner with Window Mounting Kit, 24-Hour Timer, for Rooms of About 90 m³

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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

Quick installation: you need a window (move a window or a sliding window) to dissipate heat from the room. The kit contains the exhaust hose and the window kit (window seal plate and sealing cloth) and requires no additional tools for installation. Installation is simple and can be done in 5-10 minutes. If you have any questions, please contact SHINCO support. We will reply to you within 24 hours.
Easy to use: Shinco 3.5 kW mobile air conditioner is equipped with an intelligent LED panel and a fully functional remote control to easily change the time, temperature and mode. Four wheels and built-in handles can help you move the portable air conditioner effortlessly from room to room.
Easy to clean and R290 refrigerant: the rear filter can be easily removed for easy cleaning to ensure that every breath is as fresh as always. R290 is a natural, freon-free, environmentally friendly and low-carbon refrigerant that protects the ozone layer and brings new experiences in terms of sustainable life. WEEE no. DE 56142314
3-in-1 function: Shinco 3-in-1 mobile air conditioner is equipped with 3 intelligent modes: cooling, fan and dehumidifier. The cooling mode provides strong cooling in hot weather. The fan mode allows air to circulate. The dehumidification mode is ideal for rainy and wet weather. The device meets all your ventilation and cooling requirements.
24-hour timer: Shinco 12000BTU mobile air conditioner has a built-in timer from 1 to 24 hours, the fans can be switched off at the time you have set, when you fall asleep or forget to turn it off; you can also turn on the air conditioner in advance through the timer function, and feel the cool air immediately when you come home.

359,99 €
06

Euker

Quiet 4-in-1 Mobile Air Conditioner 12000 BTU | Cooling/Ventilating/Dehumidification/Follow-Me | For Rooms Up to 43-51㎡ Exhaust Hose + Digital Display + Remote Control + 24h Timer | Ideal for Bedroom

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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

High cooling capacity for large rooms: 12000 BTU cooling capacity, ideal for rooms up to 51 m², ensures fast and efficient cooling - ideal for home and office.
Flexible 3-in-1 function: cooling, dehumidifying (up to 45 L/day) and ventilation with 3 individually adjustable speeds, perfectly adapted to any desired room climate.
Easy to use and practical functions: remote control, LED display and 24-hour timer; automatic self-evaporation reduces maintenance, automatic swivel function guarantees optimal air distribution.
ENERGY EFFICIENT & ENVIRONMENTALLY FRIENDLY: Energy efficiency class A, with environmentally friendly R290 refrigerant, low energy consumption combined with quiet operation (≤ 52dB) for relaxed living and working.
Compact mobile and easy to use: portable design with 4 wheels for easy movement; easy installation with window kit, equipped with washable antibacterial filter for fresh, clean air.

349,99 €
07

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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9.0

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

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.

479,00 €
08

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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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

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 €
09

VESKA

Split Air Conditioning Set with WiFi / App Function Air Conditioner - Cooling A++ / Heating A+ 12000 BTU/h (3,500 Watt) Refrigerant R32 - Remote Control, Timer Function - Includes Mounting Material

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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

WIFI AND APP FUNCTION: Pair the air conditioner with your smartphone or tablet and use the user-friendly app to control the device from anywhere. Whether you want to adjust the temperature, set the timer or change the operating mode, the app gives you full control even when you are not at home.
Versatile: the quiet sleep mode allows you to sleep undisturbed at a soothing room temperature. Thanks to the remote control with LCD display, you can always keep control and can use the 24-hour timer to determine the duration for which your room should be kept cool. 4 different power levels offer a choice of customization options.
INNOVATIVE SYSTEM: The groundbreaking dehumidifier, filled with R32 refrigerant, not only meets the latest standard, but also offers a performance that is 1.6 times higher than conventional cooling systems. By reducing pressure losses, the performance can be significantly increased with the same size of the heat exchangers. For the efficiency of a heat pump, the ratio between the supplied energy and the energy obtained from it plays a decisive role.
Energy saving: Use the uncomplicated operation and the excellent energy efficiency class of the ventilation shaft: cooling/heating = A + DC full inverter: This continuously adjusts the operating speed of the inverter compressor motor without steps. The air conditioner works extremely quietly and delivers peak performance.
COMPLETE PACKAGE: Split air conditioner in complete set including WiFi: ECO Smart indoor and outdoor unit with gold fin coating. Pre-filled with state-of-the-art refrigerant - includes 5 m copper pipes + connection cable as well as wall mount and mounting accessories. The set is perfectly rounded off by a remote control with illuminated LCD display, sealing agent for the wall opening, insulation tape, drain hose and a power connection cable between the indoor unit and the outdoor unit.

499,00 €
10

HANTECH

TCL TAC-12CPB/MZB Mobile Air Conditioner 12000 BTU up to 35 m²: 3 Speed Levels, Dust Filter, Timer, Operating Perre for Toddlers, Sleep Mode

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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

INTEGRATED 24-hour timer & child control: program the operation conveniently before: the 24-hour timer allows precise control, for example for returning home. Remote control child lock protects against accidental changes.
3-in-1 function: the combination of cooling, dehumidifying (0.9 l/h) and ventilation (2 fan levels) makes this model an all-rounder - perfect for bedroom, living room or office.
Strong cooling for hot days: with 3.5 kW cooling capacity (12000 BTU), the device is ideal for rooms up to 35 m² and ensures fast, effective cooling on hot summer days. Thanks to the auto-restart function, it is ready to use again even after power failure.
Quiet operation and switching mode for you: with a noise level of only 48-64 dB(A), the device operates pleasantly quietly. The sleep mode ensures reduced volume and stable temperatures for quiet summer nights.
Environmentally friendly: the natural refrigerant R290 is particularly environmentally friendly and meets modern efficiency standards. Energy efficiency ratio (EER): 2.6.
Easy to use: with integrated handles and a weight of 26 kg, the device can be easily moved. The washable filter unit also makes cleaning easier. Includes remote control, exhaust hose and window kit.
Compact: Space-saving with dimensions of 358 x 419 x 688 mm (W x D x H) and a weight of around 29.5 kg. Includes accessories for direct operation. Remote control and 1.5 m exhaust hose are included.

378,00 €