Best Air Conditioning Unit 12000 Btu Portable Air Conditioner of 2026

Last updated on 04/04/2026
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1
9.8
Exceptional
Save 29%
Belaco Air Conditioning Unit 12000 BTU with WiFi and Smart Functions, Portable Air Conditioner, 3-in-1 Dehumidifier Fan & Cooling Options, 24Hr Timer, Dual Window Kit
Belaco

Belaco Air Conditioning Unit 12000 BTU with WiFi and Smart Functions, Portable Air Conditioner, 3-in-1 Dehumidifier Fan & Cooling Options, 24Hr Timer, Dual Window Kit

29% Off
Why we love it
  • Rapid cooling for hot days.
  • Smart control from anywhere.
  • Versatile comfort for every need.
Main Highlights
  • Powerful 12000 BTU Fast Cooling Performance – High-efficiency compressor delivers rapid, consistent cooling for rooms up to 30㎡. Ideal portable air conditioner for bedrooms, living rooms, offices & home gyms, keeping your space refreshingly cool during hot summer days.
  • Smart WiFi App Control Anywhere – Built-in Tuya Smart WiFi lets you control your air conditioning unit remotely using your smartphone. Change temperature, switch modes, set timers and manage cooling from anywhere, anytime.
  • Advanced 3-in-1 Comfort System – Combines Cooling, Dehumidifier and Fan modes in one smart air conditioning unit. Remove excess moisture from damp rooms, circulate fresh air or enjoy powerful cooling for year-round indoor comfort.
  • 24-Hour Timer & Quiet Sleep Mode – Program automatic on/off schedules to suit your daily routine while sleep mode reduces noise and optimises temperature overnight for undisturbed, energy-efficient rest.
  • Intelligent Remote & Smart Digital Control Panel – Front LED temperature display with touch controls gives instant visibility, while the intelligent infrared remote allows full operation from across the room with ease and convenience.
  • Child Lock Safety & Power-Off Memory Function – Prevents accidental changes by children and automatically resumes your last selected mode after power cuts, ensuring reliable and worry-free everyday use.
  • Dual Window Kit for Universal Installation – Supplied with dual window vent kit, adjustable window seal, 1.5m exhaust hose and 1m drain pipe, making installation quick and compatible with sliding, sash and tilt windows.
  • Portable Design with Easy Maintenance – Smooth 360° wheels and carry handle allow effortless room-to-room movement, while the easy-access washable filter keeps air clean and maintenance simple.
9.8
Exceptional
Save 29%
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2
9.7
Exceptional
Pro Breeze® 12000 BTU Portable Air Conditioner - Smart Home WiFi Compatible with 24-Hour Digital Timer, Smart Display & Window Venting Kit Included - Air Conditioning Unit for Home & Office
Pro Breeze

Pro Breeze® 12000 BTU Portable Air Conditioner - Smart Home WiFi Compatible with 24-Hour Digital Timer, Smart Display & Window Venting Kit Included - Air Conditioning Unit for Home & Office

Why we love it
  • Powerful and energy-efficient cooling.
  • Smart home and voice control.
  • Versatile, multi-purpose functionality.
Main Highlights
  • POWERFUL COOLING: This 12000 BTU air conditioner features immense cooling power, allowing for strong and efficient cooling down to 16°C in medium to large homes, bedroom and home office. The automatic oscillating louvres can be adjusted by 115 degrees to cool down a wide area quicker whilst remaining energy efficient.
  • SMART HOME TECHNOLOGY: Connect your mobile to the AC unit and control its temperature, 24-hour timer and various functions through the free Pro Breeze app. Alternatively, use voice commands compatible with Amazon Alexa and Google Home for iPhone and Android to speak to your air conditioner from the bed or sofa.
  • MULTIPURPOSE SOLUTION: Combining 3 products into 1, this aircon unit also works as a portable fan with 3 turbo fan speeds and a dehumidifier, helping to keep your home cool and ensure optimal humidity between 40% and 60% - an ideal all-around adaptable cooling solution saving you money and space.
  • 4 MODES & 3 SPEEDS: This portable air conditioning unit features 3 speeds and 4 multi-purpose operating modes including air cooling, dehumidifying, fan only and sleep. In sleep mode, the room air conditioner operates quietly with fan at low speed for undisturbed moments, ideal for your bedroom or nursery.
  • FLEXIBLE CONTROL: The portable aircon's modes can be easily operated using the remote control, navigation panel or free Pro Breeze app. The LED display shows the current mode and temperature. Set up a 24/7 timer and calendar feature to let the AC turn on and off as needed, perfect for reducing electricity costs.
  • SAVE ENERGY, REDUCE BILLS: This air con unit boasts a Class A Energy Efficiency rating to ensure that keeping cool in the sweltering summer heat is cost-effective. It also utilises an R290 refrigerant, up to 690 times more eco friendly than traditional air conditioning gasses.
  • WINDOW KITS INCLUDED: We have included an easy-to-install air conditioner window kit with step-by-step instructions to fit either slide or hinged windows. The portable AC has 4 wheels for easy portability between rooms and its space-saving design also ensures it will look great in any home.
  • PRO BREEZE – THE AIR COOLING EXPERTS: Explore the Pro Breeze cooling range which includes powerful 7000, 9000 and 12000BTU Air Conditioners, 5L and 10L Evaporative Coolers along with a vast range of innovative Tower and Pedestal Fans. Fancy a refreshingly cold drink? Search for the Pro Breeze Ice Maker!
9.7
Exceptional
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3
9.5
Superb
Save 6%
Pro Breeze® 14000 BTU Portable Air Conditioner - Smart Home WiFi Compatible with 24-Hour Digital Timer, Smart Display & Window Venting Kit Included - Air Conditioning Unit for Home & Office
Pro Breeze

Pro Breeze® 14000 BTU Portable Air Conditioner - Smart Home WiFi Compatible with 24-Hour Digital Timer, Smart Display & Window Venting Kit Included - Air Conditioning Unit for Home & Office

6% Off
Why we love it
  • Powerful cooling for large spaces.
  • Smart home control options available.
  • Energy efficient, cost-saving design.
Main Highlights
  • POWERFUL COOLING: This 14000 BTU air conditioner features immense cooling power, allowing for strong and efficient cooling down to 16°C in medium to large homes, bedroom and home office. The automatic oscillating louvres can be adjusted by 115 degrees to cool down a wide area quicker whilst remaining energy efficient.
  • SMART HOME TECHNOLOGY: Connect your mobile to the AC unit and control its temperature, 24-hour timer and various functions through the free app. Alternatively, use voice commands compatible with Amazon Alexa and Google Home for iPhone and Android to speak to your air conditioner from the bed or sofa.
  • MULTIPURPOSE SOLUTION: Combining 3 products into 1, this aircon unit also works as a portable fan with 3 turbo fan speeds and a dehumidifier, helping to keep your home cool and ensure optimal humidity between 40% and 60% - an ideal all-around adaptable cooling solution saving you money and space.
  • 4 MODES & 3 SPEEDS: This portable air conditioning unit features 3 speeds and 4 multi-purpose operating modes including air cooling, dehumidifying, fan only and sleep. In sleep mode, the room air conditioner operates quietly with fan at low speed for undisturbed moments, ideal for your bedroom or nursery.
  • FLEXIBLE CONTROL: The portable aircon's modes can be easily operated using the remote control, navigation panel or free app. The LED display shows the current mode and temperature. Set up a 24/7 timer and calendar feature to let the AC turn on and off as needed, perfect for reducing electricity costs.
  • SAVE ENERGY, REDUCE BILLS: This air con unit boasts a Class A Energy Efficiency rating to ensure that keeping cool in the sweltering summer heat is cost-effective. It also utilises an R290 refrigerant, up to 690 times more eco friendly than traditional air conditioning gasses.
  • WINDOW KITS INCLUDED: We have included an easy-to-install air conditioner window kit with step-by-step instructions to fit either slide or hinged windows. The portable AC has 4 wheels for easy portability between rooms and its space-saving design also ensures it will look great in any home.
  • PRO BREEZE – THE AIR COOLING EXPERTS: Explore the Pro Breeze cooling range which includes powerful 7000, 9000 and 12000BTU Air Conditioners, 5L and 10L Evaporative Coolers along with a vast range of innovative Tower and Pedestal Fans. Fancy a refreshingly cold drink? Search for the Pro Breeze Ice Maker!
9.5
Superb
Save 6%
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4
9.4
Superb
12000 BTU Mobile Air Conditioner, A++ Energy Rated Portable Air Conditioning Unit with R290, 4‑in‑1 Mobile AC – Room Cooling, Dehumidifier, Fan, Follow‑Me Temperature Control, Approx. 52 dB
Zstar

12000 BTU Mobile Air Conditioner, A++ Energy Rated Portable Air Conditioning Unit with R290, 4‑in‑1 Mobile AC – Room Cooling, Dehumidifier, Fan, Follow‑Me Temperature Control, Approx. 52 dB

Why we love it
  • Efficient cooling for rooms.
  • Follow Me keeps cooling nearby.
  • Removable filters for hygiene.
Main Highlights
  • Designed for rooms up to about 45 m², this 12000 BTU mobile air conditioner provides targeted cooling for living rooms, bedrooms and home offices. With an A++ rating and R290 refrigerant, the portable air conditioning unit offers an adjustable set‑point from 18–32 °C for seasonal temperature control.
  • This model functions as a 4‑in‑1 system, combining air conditioning, dehumidification, three‑speed fan and Follow‑Me control in a single mobile air conditioner. In Follow‑Me mode, the portable air conditioning unit uses the temperature near the remote as reference, helping to align room cooling with the user’s position.
  • Supplied with a window sealing kit suitable for many tilt‑and‑turn and sliding styles, the mobile air conditioner can be vented without permanent building work or a separate outdoor unit. With an operating sound level of around 52 dB, the portable air conditioning unit is intended for domestic environments where moderate noise is acceptable.
  • Weighing approximately 22.5 kg and mounted on four multidirectional castors, this mobile air conditioner is built for relocation between spaces such as lounge, study and bedroom. The portable air conditioning unit includes removable, rinseable air filters, enabling basic hygiene maintenance to be carried out by the user.
  • By combining R290 refrigerant with an A++ efficiency class, this mobile air conditioner reflects current expectations for home cooling equipment. The portable air conditioning unit can be used for cooling, moisture reduction and air circulation, making it suited as a temporary or supplementary solution in residential and small office settings.
9.4
Superb
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5
9.3
Superb
Air Conditioner, 12000BTU Portable Air Conditioner, 3-in-1 with Cooling, Dehumidifier 35L/Day, Sleep Mode&Fan with 2 Speeds, 24 Hour Timer & Window Venting Kit for Room, Office
GarveeMore

Air Conditioner, 12000BTU Portable Air Conditioner, 3-in-1 with Cooling, Dehumidifier 35L/Day, Sleep Mode&Fan with 2 Speeds, 24 Hour Timer & Window Venting Kit for Room, Office

Why we love it
  • Powerful cooling for rooms.
  • Three in one cooling options.
  • Whisper quiet operation.
Main Highlights
  • [12000 BTU Powerful & Fast Cooling] With a robust 12,000 BTU output, this air conditioner is designed to cool rooms up to 30㎡ (approx. 323 sq.ft) quickly and efficiently. Perfect for bedrooms, home offices, or living spaces, it provides instant relief from the summer heat. Whether you need a powerful AC for your bedroom or a reliable air conditioning unit for your living space, this portable air conditioner provides instant relief from the summer heat.
  • [3-in-1 Multi-Functional Operation] This versatile air conditioning unit portable device keeps you comfortable all year round. Use Cooling mode on hot days, Fan mode (with 2 speeds) for air circulation, and Dry mode to reduce excess and humidity.
  • [Smart Control & User-Friendly Display] Effortlessly manage your comfort with the included remote control and an intuitive electronic LED display. This aircon features a handy 24-hour programmable timer that allows you to set the air conditioners to turn on or off automatically, saving energy and ensuring the perfect temperature when you arrive home.
  • [Whisper-Quiet Operation] Designed for uninterrupted sleep and work, this AC operates at a low noise level. Enjoy a cool and peaceful environment without the loud distraction of traditional air conditioning units.
  • [Portable & Easy Installation] No permanent installation is required. This portable air conditioner comes with a simple window venting kit that can be set up in minutes. Smooth-rolling castors allow you to move it easily from room to room wherever cooling is needed.
  • [Reliable After-Sales Support] Your purchase of this air conditioning unit includes a comprehensive 2-year warranty and access to a detailed installation tutorial. Our customer service team is ready to assist you promptly with any questions.
9.3
Superb
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6
9.2
Superb
Save 5%
12000 BTU Portable Air Conditioner, 5-in-1 Air Con with Heating & Cooling - Smart Follow, 550 Sq ft Coverage, Sleep Mode at 48dB, 30L/Day Dehumidifier,24H Timer, Includes Window Seal Kit
RBFGYIOP

12000 BTU Portable Air Conditioner, 5-in-1 Air Con with Heating & Cooling - Smart Follow, 550 Sq ft Coverage, Sleep Mode at 48dB, 30L/Day Dehumidifier,24H Timer, Includes Window Seal Kit

5% Off
Why we love it
  • Year-round comfort with 12000 BTU.
  • Five-in-one versatile cooling.
  • Quiet sleep-friendly operation.
Main Highlights
  • [💖12000 BTU Year-Round Comfort]This 5-in-1 portable air conditioner delivers powerful 12000 BTU cooling to beat the fiercest UK heatwave, plus effective heating for those chilly British winters. Covers rooms up to 550 sq ft with precise thermostat control (18–32°C) and Energy Class A efficiency, you stay comfortable without the energy bill shock. Eco‑friendly R290 refrigerant keeps your carbon pawprint low.
  • [❄️🔥 5-in-1 Multifunctional] Why juggle multiple appliances? This marvel does it all: ❄️ Cool – instant relief on scorching days; 🔥 Heat – cosy warmth when temperatures drop; 💧 Dehumidify – removes up to 30L of daily (that’s 52 pints!) to banish sticky, damp air; 🌬️ Fan – 3 speeds for gentle airflow; 🤖 Smart Follow – infrared sensor + remote control automatically adjusts settings, so you’re always in the perfect climate.
  • [🌙 Library-Quiet Sleep Mode & 24-Hour Timer] Enjoy undisturbed peace with one of the quietest ACs in its class. At just 48dB (quieter than a library whisper!), Sleep Mode dims the display and optimises energy use – ideal for nurseries, light sleepers, or home workers. The 24‑hour programmable timer lets you pre‑cool or pre‑heat your room before you arrive, then switch off automatically.
  • [💧 Self-Evaporation – Zero Manual Draining!] No more emptying drip trays – our auto condensate recycling system delivers non-stop cooling & heating. Tool-free window kit fits most sliders, no drilling needed. Smooth-glide wheels & handles for effortless room-to-room portability.
  • [🌿 Compact, Cleanable & Eco‑Conscious Design]Thoughtfully engineered for UK homes: the space‑slim footprint fits snugly even in cosy flats. Breathe fresher air with the removable, washable filter – a quick monthly rinse traps dust, pet dander, and pollen, saving you money on replacements. Powered by green R290 refrigerant and rated Energy Class A, it’s a win for your wallet and the planet.
  • [⚙️Cleaner Air & Easy Maintenance] Our air conditioning systems come with removable, washable filters. Everything you need is in the box: remote control, window kit, hose, and adapters – just unpack and chill (or warm)!
9.2
Superb
Save 5%
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7
9.2
Superb
HOMCOM Portable Air Conditioner 12000 BTU, 4-in-1 Air Conditioning Unit, Dehumidifier, Cooling, Fan, Sleep Mode with 2 Speeds, Remote, LED Display, 24H Timer, Window Kit, Child Lock, 35m², Black
HOMCOM

HOMCOM Portable Air Conditioner 12000 BTU, 4-in-1 Air Conditioning Unit, Dehumidifier, Cooling, Fan, Sleep Mode with 2 Speeds, Remote, LED Display, 24H Timer, Window Kit, Child Lock, 35m², Black

Why we love it
  • Powerful cooling for spaces.
  • Versatile four in one design.
  • Easy portability and setup.
Main Highlights
  • 12000 BTU: Powerful cooling output from this air conditioning unit, brings quick relief down to 16°C—suitable for big-sized spaces (35 ㎡) such as bedrooms, living rooms, home offices and more
  • 4-in-1 design, with two speeds: Cool (15-31℃), fan (two speeds), dehumidify (drying the moisture out of the air) and sleep mode (51 dB). Children lock to prevent misoperation. All controlled via digital display or remote
  • Efficient & planet-friendly: With class A energy rating and natural R290 refrigerant, the air conditioner unit saves money and protects the planet. Customise your comfort with 24-hour off timer and auto mode for day and night to save energy effortlessly
  • Easy installation: The portable air conditioning unit comes with a sliding window kit compatible with windows—no drilling needed, making it great for renters or quick home setups
  • Easy to move and clean: Comes with four swivel wheel, easy to roll around from room to room, or take on trips with RVs. Removable and washable filter included
9.2
Superb
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8
9.0
Superb
12000 BTU Portable Air Conditioner, 3-In-1 Mobile AC Unit with Cooling Fan Dehumidifier Modes, Covers up to 550 Sq Ft, Dual Digital Display for Temperature Readout, Energy Class A
Aptliton

12000 BTU Portable Air Conditioner, 3-In-1 Mobile AC Unit with Cooling Fan Dehumidifier Modes, Covers up to 550 Sq Ft, Dual Digital Display for Temperature Readout, Energy Class A

Why we love it
  • Four in one versatility shines.
  • Cools large spaces efficiently.
  • Quiet operation for sleep.
Main Highlights
  • 🍃【3-in-1 Function】This 4-in-1 portable air conditioner is equipped with 3 smart modes to choose: cooling, fan and dehumidifier. Cooling mode provides powerful cooling in hot weather. Fan mode circulates air. Dehumidifier mode is ideal for rainy and wet weather. It can meet all your ventilation and cooling needs. Follew me function.
  • 🧊︎︎【Compact & Powerful 】Features a compact and multi-functional humanized design, our 12000 BTU portable air conditioners cools a room of up to 450-550 sq.ft., and the air flow is rated at 390 m3/h. This floor-standing air conditioner portable for room is the ideal small air conditioner for dorms, apartments, cabins, campers, offices, bedrooms or living rooms.
  • ✨︎【Easy to Operate】Our portable A/C unit is fully equipped with a smart LED panel, full-function remote control to change the time, temperature and mode easily. The additional temperature display on the front of the portable air conditioners allows you to see the temperature from a distance or in the dark. Four casters and built-in grips can help you move the air conditioner portable from room to room effortlessly.
  • ⏱️【Quiet & Powerful】 With 24H timer, sleep mode and auto-off function, the operating noise level is 51-53dB, you can enjoy your sleep time without disturbance.
  • 🛠【Easy to install】 Simply roll this portable ac air conditioner (35.8×41.9×68.8 cm) to any room with double hung or sliding windows, attach the included hose and window adapter and plug into an outlet to use. No need to install on the wall so it will save space and cost.
9.0
Superb
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9
8.9
Excellent
12000BTU Air Conditioning Unit, 4-in-1 Portable Air Conditioner, Cooling&Heating&Dehumidifier 45L/Day&Fan with 3 Speeds, 24 Hour Timer&Window Venting Kit. Digital Display, Remote Control
GarveeMore

12000BTU Air Conditioning Unit, 4-in-1 Portable Air Conditioner, Cooling&Heating&Dehumidifier 45L/Day&Fan with 3 Speeds, 24 Hour Timer&Window Venting Kit. Digital Display, Remote Control

Why we love it
  • Powerful cooling for large rooms.
  • All-season 4-in-1 solution.
  • Portable design and easy installation.
Main Highlights
  • ⚡[Powerful 12000BTU Cooling] Experience powerful cooling with this 12000BTU portable air conditioner, designed to effectively cool rooms up to 550 sq.ft (approx. 51m²). This AC unit uses advanced R290 refrigerant, which is has zero impact on the ozone layer. Whether you need a reliable air conditioning unit for a large living space or a bedroom, this air conditioner delivers efficient, powerful performance while being kind
  • 🗒[4-in-1 Multi-function] This portable air conditioning unit is a true all-season solution. With four modes—Cooling, Heating, Dehumidifier, and Fan (with 3 speeds)—it adapts to your needs every day. Unlike standard air conditioners, the powerful heating function makes it perfect for chilly UK evenings, providing warmth when you need it most. Use it as an air cooler in summer and a trusted aircon heater in winter, ensuring your perfect temperature all year long.
  • ⏰[Convenient 24-Hour Timer] Enjoy ultimate convenience with a 24-hour programmable timer, allowing you to set this air conditioner to turn on or off automatically—ideal for falling asleep in a cool room or waking up to a warm space. Plus, this AC features an auto-drain function in most modes, meaning you can enjoy continuous use without the hassle of manually emptying a water tank. Just set it and forget it.
  • 📱[Dual Smart Controls: Touch Panel & Remote] Effortlessly manage your climate with two intuitive control options. The sleek electronic display features a smart touch control panel on the unit for easy access, while the included remote control lets you adjust settings from across the room. Monitor the temperature, switch modes, and set the timer with ease, putting complete control of your air conditioners right at your fingertips.
  • 🔨[Portable Design with Easy Installation] No permanent installation is required. This portable air conditioner comes complete with a simple window venting kit that can be set up in minutes. Smooth-rolling castors allow you to move this lightweight AC unit effortlessly from room to room. Whether you need cooling in a home office during the day or heating in a bedroom at night, you can easily roll this air conditioning unit portable device wherever comfort is needed.
  • 🧑‍💻[Reliable After-Sales Support] Your satisfaction is guaranteed with our comprehensive after-sales support. Every purchase of this portable air conditioner includes access to a detailed installation tutorial and a full 1-year warranty for your peace of mind. Our dedicated customer service team is ready to assist you promptly with any questions, ensuring your air conditioning unit provides reliable comfort for years to come.
8.9
Excellent
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10
8.7
Excellent
Acekool Air Conditioner, 4-In-1 Portable Air Conditioner 12000 Btu With Sleep Mode, Cooling & Fan With 2 Speed, Dehumidifier, Conditioning Unit With 24 Hour Timer Indow Kits for Home Rooms & Office
Acekool

Acekool Air Conditioner, 4-In-1 Portable Air Conditioner 12000 Btu With Sleep Mode, Cooling & Fan With 2 Speed, Dehumidifier, Conditioning Unit With 24 Hour Timer Indow Kits for Home Rooms & Office

Why we love it
  • Powerful cooling and versatility.
  • Quiet operation for sleep.
  • Easy to move.
Main Highlights
  • ❄️【Acekool Air Conditioning】In addition to its powerful cooling function, this portable air conditioning unit offers Ventilation, Dehumidifying and Sleep mode under cooling mode as well. Air conditionerwith wheels to move around. Those modes can be chosen according to one's desired.Ventilation that allowing fan only mode which needs no window kit installed and no drainage hose attached.
  • ❄️【4-in-1 Multiple AC unit】12000BTU air conditioner, featuring cooling, dehumidifier, fan-only, and sleep settings. Whether it’s gentle nighttime cooling or a cold midday blast, we’ve got you covered and quiet childlike sleep with light off and lower noise under our sleep mode, sleep mode's gentle hum below 51 dB and our air conditioner has you covered.
  • ❄️【Portable Design】Move the portable air conditioning unit around your home using the four castor wheels. Complete with a window venting kit to expel hot air, cool down your office, lounge, or bedroom.We offer window kits that are compatible with most sliding windows, catering you an effortless installment without drilling.
  • ❄️【Compact and easy to install】 You simply place this portable air conditioner (35.8 x 41.9 x 68.8 cm) in any room with double or sliding windows, connect the supplied hose and window adapter, then plug it into a power socket and it's ready to go. No installation on the wall or drilling of holes is required, saving space and costs.
  • ❄️【Excellent service and package list】 We provide 24-hour customer support, so you don't have to worry about after-sales service. If you have any questions, please feel free to contact us to handle it for you The package includes: Window partition kit × 1, Exhaust duct × 1, Exhaust duct interface × 1, Insulation panel connector × 1, Digital display remote control × 1, AAA battery × 2.
8.7
Excellent
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