10 Best Air Conditioning Units For Homes 12000 Btu in The UK

Last updated on 11/08/2025

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ELECCI 4-in-1 Portable Air Conditioner - 12000 BTU Cooling/Heating for 60m² Rooms | WiFi-Enabled Dehumidifier, Heater & Fan with Compressor | All-Season Smart Climate Control

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Why We Love It

Highly efficient cooling and heating.
Four personalized air treatment modes.
Convenient drainage for hassle-free use.

Main Highlights

【Highly efficient in Cooling and Hot Air】 With a highly efficient compressor, this powerful air conditioner coolers is the perfect addition to any room, providing COOL AIR to a 60 square meters space and HOT AIR to a 40 square meters space, giving you a wonderful feeling in both hot and cold weather. Temperature Control Range is between 61℉ (16℃）and 90℉ (32℃), operating a variety of controls to let it be the more comfortable temperature range for the human body in different seasons.
【Powerful Four Air Treatment Mode You Need】This portable air conditioner coolers has 4 personalized function modes for you to choose from - Cooling, Heater, Dehumidify and Air Supply it also has a built-in temperature sensor that automatically adjusts the compressor operation according to the current temperature environment to reduce energy consumption.
【Super Convenient to Drain】No more frequent empting of bucket or pan for condensate. Not only does this cooler have a inner water tank, but also it can be drained through two drain holes for cooling, heating and dehumidification modes. After the drainage pipe is connected to the upper drain hose, it can drain water for cooling and heater mode, and the lower drain hose can discharge condensate for dehumidification function. More convenient to use, peace of mind.
【Humanized design-double LCD display】 This multifunctional air treatment air conditioner cooler is equipped with an easy-to-read LCD data display in the front of cooler that lets you know the operating status of the machine, which also allows you to check the temperature from a distance or from a distance in the dark, in addition, it is also designed with an intelligent control panel in the top, which allows you adjust its mode or temp as you need, with the portable remote control you can adjust the temperature.
【Low Maintainance-Safe to Use】With auto defrost function under dehumidify and cooling mode. And continuous drainage is available when working. It also can automatically detect the machine temperature and determine whether antifreeze is needed, so that the machine still has good performance when the ambient temperature is low. This is very important the compressor also has stop and start protection functions when the machine is running, maximizing the safety of use.
【Advantage in Low Noise】 There is no special sleep mode, but through intelligent detection and wind speed regulation, it can accompany you to spend a comfortable home life 24 hours a day throughout the year! When you rest on the sofa or bed, adjust the wind speed to low, the decibel value of the machine is about 50dB. When the wind speed is adjusted to run at high speed, the decibel level will increase by 60dB. Don't worry too much, it will not affect your ability to concentrate on your own business.
【Refrigerant compatibility R32】 The refrigerant compatibility of this portable air conditioner is R32/0.34kg (12OZ). relevant indices: ODP=0, GWP=2200. Its advantages are that it does not damage the ozone layer, is environment friendly, and high refrigeration efficiency, it has good safety performance (non-flammable, non-explosive, non-toxic, non-irritating, non-corrosive)
【Why can't the temperature be lowered in a large room? 】 To achieve the best cooling effect. Please be sure to connect the exhaust pipe, because the compressor will discharge heat when working, and this heat must be discharged to avoid affecting the indoor temperature. In addition, the air output of this machine is 400m³/h. When you need it to run the cooling mode in a space of 40-60 sq m, please check whether the room is relatively empty and there is no other heat source that generates heat. Under normal circumstances, it takes 30-40 minutes to cool down to the ideal value. Thank you for your understanding!

Senville LETO Series Wall Split Air Conditioner Heat Pump, Wall Mounted, 12000 BTU, 3.5 kW, Inverter, White

Why We Love It

All-season temperature solution.
Stylish air conditioning.
Comprehensive installation package.

Main Highlights

VERSATILE 4-IN-1 WALL SPLIT: Dive into an all-season solution with our wall split AC and heating system, featuring air conditioning, a robust heat pump (functional up to 5F/-15C), dehumidifier, fan, and an accelerated turbo function. Enjoy the reliability of a DC Inverter that's UL Listed, AHRI Certified.
STYLISH & FUNCTIONAL WALL SPLIT AC: Crafted for both home and business, this wall split air conditioner provides dynamic performance without compromising on aesthetics. Ideal for bedrooms, living areas, commercial spaces like stores, eateries, and warehouses.
COMPLETE INSTALLATION PACKAGE: Comes with an indoor air handler, outdoor condenser, intuitive remote control, and a comprehensive installation kit featuring a 16ft. line set and communication wire. Pre-loaded with R32 refrigerant catering up to 25 ft. A heads-up: This system mandates professional installation – it's not a DIY mini split AC.
TRUST WORTHY 5-YEAR WARRANTY: Your investment is safeguarded with our wall split heat pump's industry-leading warranty – 5 years on parts replacement and another 5 on the compressor. Benefit from the established quality of Senville, complemented by complimentary technical assistance. Labor not included.

Olsen & Smith 3-in-1 Portable Air Conditioning Unit, AC Air Con Conditioner Cooler On Wheels with Cooling, Fan & Dehumidifier Functions, Window Kit, 24H Timer & Remote Control (12000-BTU)

Why We Love It

Year-round versatile operation.
Quiet performance for peaceful living.
Compact and portable design.

Main Highlights

VERSATILE 3-IN-1 OPERATION – Features Cooling, Fan and Dehumidifier modes for year-round use. Dehumidifier mode removes excess moisture from the air (up to 1.2L/H via the included drainage hose) to prevent dampness, while three fan speeds and vertical swing mode (up/down 58°) ensure even air circulation. Auto mode regulates your unit’s operation without needing to constantly adjust the settings, while Sleep mode gradually reduces intensity and reduces noise for a restful night.
QUIET OPERATION & CUSTOMISABLE COMFORT – Operates at just 54 decibels at its highest setting, providing quiet cooling without disruption. The 24-hour timer lets you programme start and stop times to match your daily schedule and achieve improved energy efficiency day or night.
COMPACT, PORTABLE & SPACE-SAVING DESIGN – Sleek and modern design fits neatly into tight spaces without compromising power. Built-in castor wheels and side handles make it easy to move from room to room, giving you flexible, portable cooling wherever it’s needed most in your home. Features a removable washable air filter for easy cleaning and maintenance.
WINDOW KIT & REMOTE CONTROL INCLUDED – Includes two adjustable window venting kits - one for sliding windows and one for hinged windows - ensuring a secure, tool-free setup that works with most window types. Comes with an easy-to-use remote control for full access to all functions from across the room.

BLU12 12,000BTU Portable Air Conditioner, Heating, Cooling, Dehumidification and Fan, Remote Control, Window Sheet for UK Windows Included, for Rooms Up to 30 Square Metres

Why We Love It

Versatile all-year appliance.
Eco-friendly with energy savings.
Self-evaporating, maintenance-free operation.

Main Highlights

4-in1 Multi Functional: Portable air conditioning unit with cooling, heating, fan and dehumidifier function, complete with 1.5m expandable exhaust hose included. The BLU12HP 12,000 BTU portable air conditioner delivers an instant cooling relief for your home or work place. It can be used all year round due to it's heating and dehumidifying function.
New R290 Refrigerant: uses natural high efficiency R290, which has no greenhouse emissions. The natural refrigerant is non-toxic, eco friendly and also offers energy savings. Already respecting the 2020 requirements you can be sure you are purchasing an air conditioning unit which already complies and will last you very many years, unlike air conditioning units that still use polluting gases.
Self Evaporating Function: Reduces the need to regularly empty the water tank as the unit recycles approximately half of the condensed water and uses it to cool off the inner cooling coils, which allows the unit to run more efficiently. It then disperses, or evaporates, the remaining water, along with the hot air, via the hot air duct. This cuts out any unnecessary water collecting inside the unit or in an outside container.
Complimentary Window Sheet, Remote Control with LED Display to switch between Modes, Set Temperature & View °F & °C. Easy-roll omnidirectional casters help you move your "BLU12HP" wherever it is needed most. Sound Pressure Level 49 - 53 dB(A). Sound Power Level 62 - 64dBA. PLEASE NOTE: The BLU12 does NOT have a swing function. It is designed to cool down spaces by distributing air evenly without the need to have a swing function.

12000BTU 6-in-1 Portable Air Conditioner with Heater, Dehumidifier, Fan, WiFi Smart APP, Remote Control - Curved Pattern - Sleep Mode, 3 Fan Speeds, 24H Timer - AC Unit for Home and Office

Why We Love It

Versatile cooling options available.
Convenient smart control.
Efficient 12000 BTU cooling.

Main Highlights

【Versatile Cooling Options】 This portable air conditioner offers 6 modes to choose from, including automatic, cool, heat, fan, dehumidify, and sleep mode, making it suitable for year-round use. With 3 fan speeds (high/medium/low) and a temperature range of 15-31℃, you can easily customize your comfort level.
【Convenient Control Options】 With smart WiFi technology, you can conveniently adjust settings, switch modes, and set schedules using your mobile phone. The touch panel with LED display and remote control make operation simple and hassle-free.
【Efficient Cooling Features】 This portable AC unit has a powerful cooling capacity of 12000 BTU, capable of effectively cooling rooms up to 25 ㎡. The 60-degree auto-swing function ensures even air circulation, while the 24-hour timer allows for automatic operation based on your schedule.
【User-Friendly Design】 The sleep mode ensures a peaceful night's rest with minimal noise disruption. Built-in handles and universal wheels make it easy to move this floor AC unit. Choose between continuous or manual drainage options for convenience.
【Easy Installation】 Complete accessories and clear instructions make setup quick and easy. The adjustable window kit allows for easy connection to various types of windows for flexible installation.

De'Longhi Pinguino PACEL112CST Smart Portable 11,000 BTU Air Conditioner, WiFi App & Alexa Voice Control, 3 in 1 Air Conditioning Unit, Rooms up to 110m³, Window Kit, A+ Energy Efficiency

Why We Love It

Versatile climate control.
Intuitive LED panel.
Efficient moisture removal.

Main Highlights

POWERFUL AND QUIET COOLING - Pinguino Care4Me, the intelligent 11,000 BTU air conditioner that makes ideal comfort personal, for any space up to 110m³. Using Silent Technology, this Pinguino unit 50% noise reduction from max to min speed
SMART CONTROL - Easily control Pinguino from home or outside through the De'Longhi Comfort app or voice assistance, Adapt comfort to your personal liking through MyEcoRealFeel via the app, Geofencing feature to turn on when you're close to home
VOICE ASSISTANCE ENABLED - This portable air conditioner can be paired with voice-enabled speakers like Amazon Alexa and Google Assistant, so you can control it from wherever you're sitting, as well as through the mobile app
COOL SURROUND TECHNOLOGY - Experience perfect cooling with the Smart Sensing feature, which monitors temperature and humidity around the smart control unit, Keep the remote unit near you and it will keep you as cool as you like
3 IN 1 FUNCTIONALITY - Enjoy ideal comfort thanks to this multifunctional 3-in-1 unit with 3 speed settings, Separate dehumidifying function (41l/ 24 hours) for especially wet seasons or humid rooms and separate fan function to simply circulate air
ENERGY EFFICIENT - Class A+ Energy Efficiency rating. Personal comfort plus 30% energy savings thanks to MyEcoRealFeel (Internal test, initial condition 30° C and 40%RH)

12000 BTU Portable Air Conditioner Unit with Remote Control - Evaporative Coolers Cooling And Heating, Mobile Heater And Cooler Fan - Energy Class A

Why We Love It

Powerful and portable air cooler.
Energy efficient and quiet.
Multiple year-round comfort functions.

Main Highlights

1. Powerful and portable air cooler with a cooling capacity of up to 12,000 BTU/h and a heating power of 10,000 BTU/h.
2. Energy efficient and quiet operation, rated A for energy efficiency and emitting only 58dB(A) sound pressure.
3. Includes window mounting kit, venting hose, and extraction duct for easy setup and use.
4. Features multiple functions such as Cooling, Heating, Auto mode, Turbo, Dehumidifier, and Extra Cool for year-round comfort.
5. Provides a powerful 470m3/h volume of air with minimal noise disturbance for optimum comfort in any season.

KOMORE 12000 BTU Air Conditioner, 5-in-1 Air Conditioning Unit with Auto, Cooling, 3 Fan Speeds, Dehumidifier, Sleep Mode 24H, Digital Display, App WIFI & Remote Control, Window Kit

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Why We Love It

Versatile 5-in-1 functionality.
Smart control via APP.
Eco-friendly and energy-efficient.

Main Highlights

[5-in-1 Portable Air Conditioner] Auto, Cooling, Dehumidifying, Fan and Sleep modes. Auto mode dynamically adjusts the cooling and fan modes based on the room temperature sensor; Cooling mode adjusts the temperature range from 15°C to 31°C; Fan mode has three air speeds; Dehumidifying mode dehumidifies up to 1.1 litres. Horizontal oscillating wind swings automatically to improve cooling performance, swinging wind attention touch screen feedback for about five seconds.
[Intelligent Control Technology] Touch screen panel on top of the body, LED digital display of temperature in front, memory function retains your previous mode and temperature settings. Comes with configured remote control (range within 5m), also can be operated remotely via APP (Tuya Smart)+ WIFI(2.4G); Sleep mode (noise level≤54dB) available only in cooling mode, temperature rises slowly and stops operating after 6 hours. Can be used with 24-hour timer, which can help you save energy costs.
[Easy To Maintain] Size 44 x 33.5 x 71cm, weight 29.5kg, with universal wheels and side handle, easy to move and carry. Removable filter for clean and healthy cold air, it is recommended to clean the dust regularly with water and soft detergent, dry thoroughly and put it back to its original place. The air conditioner has condensate circulating inside after use, observe the water full indicator, the bottom drain needs to be drained regularly or continuously using the supplied hose.
[Suitable for Most Window Types] Window exhaust kit included, including: retractable exhaust hose (up to 1.5 metres), hose connector, window exhaust adapter, baffle plate and screws, easy installation can be found in the user's instruction manual, window bracket kit is suitable for horizontal or vertical sliding windows, no drilling is required. Multi-scenario use, bring coolness and comfort to your bedroom, living room, office, basement or workplace.
[Eco-friendly & Energy-saving]: Unlike traditional air conditioners, this air conditioner uses R290 natural refrigerant, which will not harm the ozone layer and is very environmentally friendly; the energy efficiency class A ensures that you can enjoy coolness in the hot summer while saving money. The back of the unit has a cord and plug storage panel to tidy up tangled cords and finally press the plug into the socket to complete the storage.

Denwood Portable Air Conditioner 12000 BTU 4-in-1 Air Conditioning Unit Fan & Cooling Heating Dehumidifier Remote control with 24Hr Timer Dual Window kit Included with Class A Energy Efficiency Rating

Why We Love It

Powerful cooling for any space.
Versatile 4-in-1 functionality included.
Eco-friendly and cost-efficient refrigerant.

Main Highlights

【POWERFUL 12000BTU COOLING】 Belaco Air Conditioner of 12,000 BTUs, delivers an immediate cooling in your Home, Bedroom, Cabin, Office, Living Room, Kitchen. The Portable Air Conditioners gives 9000BTU power on speed 1 and 12000BTU power on speed 2 which is ideal for space up to 300 square feet.
【4-IN-1 FEATURES】 The Belaco portable air conditioning has 4 multipurpose features modes which is including NIGHT MODE, COOLING MODE, HEATING MODE, DEHUMIDIGYING MODE, 2 SPEED FAN MODE which will give you full control on your preferences.
【DUAL WINDOW KIT & WINDOW SEAL】 This Air Conditioner includes EASTY TO INSTALL ventilating kit for all kinds of window, Comes with a dual window kit for slide window, single/double hunged window & window seal for hinged windows.
【NIGHT MODE】 Push the NIGHT key on the remote control or press both the timer and down buttons on the control panel at the same time to activate. In Night mode, the target temperature will add automatically by 1℃ by 2 hours and the fan speed will change to low speed, which prevents catching cold at night.
【ECO FREINDLY REFRIGERANT】 This Air conditioner comes with R290 refrigerant which is Class A energy efficiency rating and eco-friendly. thanks to the R290 eco-friendly refrigerant, It will keep you cool during the heatwave and will save your running cost.
【REMOTE CONTROL & DIGITAL DISPLAY】This Air conditioner comes with remote control which gives you peace of mind using it while you are relaxing in your couch. The AC has DIGITAL DISPLAY which gives you full control of options you prefer.
【24HR TIMER FUNCTION】 For your peace of mind this air conditioner comes with built-in timer function which allows you to set the AC to run up to 24hrs and time adjustment span is 1 hr.

Pump House PAC-C-12 mobile air conditioning cooling only unit 3.5kW (12.000 BTU)

9.3

Superb

We scanned 1975 products

We reviewed these offers relevant to the Air Conditioning Units For Homes 12000 Btu within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like ELECCI, Senville, Olsen & Smith, BLU, Generic, De'Longhi, generic, KOMORE, Pump House, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Air Conditioning Units For Homes 12000 Btu in the market, we considered we took a deep dive into 9876 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is ELECCI 4-in-1 Portable Air Conditioner - 12000 BTU Cooling/Heating for 60m² Rooms | WiFi-Enabled Dehumidifier, Heater & Fan with Compressor | All-Season Smart Climate Control. We love many things about this product by ELECCI. What sets it apart from the competition is Highly efficient cooling and heating. , Four personalized air treatment modes. , Convenient drainage for hassle-free use. .
The best value product for most shoppers and where user satisfaction is continuously the highest is Senville LETO Series Wall Split Air Conditioner Heat Pump, Wall Mounted, 12000 BTU, 3.5 kW, Inverter, White by Senville based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Air Conditioning Units For Homes 12000 Btu and the best cost-to-value ratio is Pump House PAC-C-12 mobile air conditioning cooling only unit 3.5kW (12.000 BTU)at Pump House with a % discount.
Our list of the best Air Conditioning Units For Homes 12000 Btu is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Air Conditioning Units For Homes 12000 Btu in The UK

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We scanned 1975 products

We concluded that: