10 Best Window Air Conditioners in The UK

Last updated on 16/07/2025

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Best Choice

9.8

Exceptional

ZAFRO

ZAFRO Window Air Conditioners 8000BTU, Cools 350 Sq. Ft,2 Cooling Mode & Fan Speeds,Ultra-Quiet Remote,White

Why We Love It

Versatile temperature and modes.
User-friendly controls and display.
Adjustable airflow with louvers.

Main Highlights

61°F~88°F temperature settings, 4 modes(Cool, Dry, Fan and Auto), 4 wind speeds
Easy to install and use,electronic display button operation panel
Eco、Sleep、Timer、Filter button
May hear the thermostat click when compressor on and off.(The fan may operate even when the compressor is off.)
Directional louvers can control both horizontal and vertical airflow.

Inventor Portable Air Conditioner Magic 5-1, Powerful 12000BTU Mobile AC, Heating, Dehumidifier, 3 fan speeds, Digital Display, Remote, Window Kit, 24 Hr Timer (WEE/MM0449AA) [Energy Class A]

Why We Love It

Versatile climate control options.
Convenient remote and display.
Eco-friendly refrigerant choice.

Main Highlights

OUR MOST POWERFUL AIR CONDITIONER: This high-performance portable AC unit delivers an impressive 12,000 BTU of cooling power, making it ideal for efficiently cooling large to extra-large spaces. Its mobile design makes it a versatile solution for any room.
REAL-TIME DISPLAY & REMOTE CONTROL: Magic Mobile Air Conditioner includes a digital display indicating the current temperature, view in °F or °C. Its multi-functional control panel plus the remote control allows you to set time, adjust the temperature & switch between modes easily.
5-in-1 FUNCTIONS: Magic, integrates 5 convenient modes: cooling mode, to chill your room in hot weather conditions; heat your room in cold winter; fan mode to deliver either gentle or powerful air stream; dry mode to dehumidify the air and keep the room humidity from 40% to 60%.
PORTABLE & HASSLE-FREE INSTALLATION: Expandable exhaust hose that fits with any Standard Slider or Double Hung Window. The exhaust hose may be stretched out to 1.6 meters of length making the initial installation a breeze. Free Flexible Window Kit included.
HUMANISED DESIGN: Space-saving design with easy-roll omnidirectional & durable casters that help you move your “Magic” around spaces.
CLIMATE-FRIENDLY REFRIGERANT: R290 is a natural and safe refrigerant. It has no ozone depletion potential, only a low global warming potential (GWP) and is energy-saving and efficient.
WASHABLE AIR FILTER: To ensure clean, cool air, this AC unit includes a specially designed removable and reusable air filter that helps protect against dust and pet hair. For optimal performance and longevity, it's recommended to clean the filter every two weeks.
AIR COOLING EXPERTS: We stay connected with our customers through multiple communication channels, so you can purchase and enjoy your experience with confidence.

Sealey 3-in-1 Portable Air Conditioning Unit with Window Sealing Kit 7,000Btu/hr with Window Sealing Kit - SAC7000

Why We Love It

Powerful cooling and dehumidification.
Thermostatically controlled convenience.
Low maintenance self-evaporating system.

Main Highlights

3-in-1 high capacity, compact, portable air conditioner, air cooling with ventilation and dehumidifying functions.
Thermostatically controlled with built-in 24hr timer and sleep mode.
Self-evaporating system allows better efficiency, low maintenance and powerful cooling.
Supplied with extendable exhaust ducting with window kit for ventilation and continuous drain hose.
Air conditioning temperature range 16-32°C.
Washable filter. Auto-defrost function at low ambient temperature.

Princess 3-in-1 Portable Air Conditioner - Cooling, Dehumidifying and fan functions - With remote control and window kit

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Why We Love It

Versatile cooling options.
Quiet, efficient performance.
User-friendly controls.

Main Highlights

This Princess air conditioner is the ideal 3-in-1 appliance for the summer heat waves: it cools down, dehumidifies and ventilates for optimum comfort.
With an efficient cooling capacity of 7000 BTUs and a dehumidification rate of 0.8L/h, any room up to 25 m², whether it is a bedroom, a bathroom, a living room or an office for example, will return to an ideal temperature efficiently and a healthy atmosphere to limit the risk of respiratory illnesses and allergies.
Take advantage of its many features to optimally keep cool in summer: you can choose from 3 fan speeds (mini, maxi, medium) and 3 cool air flows in cooling mode. This air conditioner also has a 24-hour timer so you can program it for automatic shut-down at the chosen time and you will never forget to turn it off.
Thanks to the digital screen, the air conditioner is very user-friendly. A window kit is included, and it is ready to use.
Good to know: it has a 0.5-litre water tank. You'll be warned when you need to drain the air conditioner. The 4 castor wheels make it easy to move from one room to another as you need it.

Air Conditioning Unit, 7000BTU Air Conditioner with 2 Control Ways, Digital Display, Installation Kit, Low Energy, 1-24 H Timer, 4 IN 1 Ventilation Conditioning Cooling Modes for Room up to 25m²

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Why We Love It

Versatile four modes to choose.
Compact design fits any space.
Convenient remote control operation.

Main Highlights

4 Modes Selection: Cooling mode cools your large room in hot weather conditions; Fan mode provides powerful airflow; Dehumidification mode dehumidifies the air and keeps the room humidity around 50%. Silent mode operates quietly with effective cooling.
Compact & Portable with Night Sleep Mode: This air conditioner is compact in size and does not take up space. It is usually suitable for placing in every corner of the living room, room, and kitchen. In the night sleep mode, the fan speed will change to low speed, which cools down quietly and effectively, allowing you to have a good sleep.
4 In 1 Portable Air Conditioner: Cooling/ventilation/dehumidifier - the four-in-one air conditioning unit can accelerate indoor air circulation in the shortest time, reduce the temperature of the surrounding environment, let you feel cool instantly, and relieve the stuffiness in the air.
Easy Installation & Dual Window Kit: The configured ventilation kit and window seal are very simple and easy to understand. Even beginners can quickly master the installation method. Its size is suitable for most types of windows and meets the cooling needs of most families.
LED Display & Remote Control: The LED digital display of the portable air conditioner shows the current temperature, allowing you to easily understand the indoor temperature. The choice of remote control and touch control makes your life more convenient. Whether it is set at a close distance or a long distance, you can feel the comfort and coolness brought by the air conditioner.

S-360 - Avalla Air Conditioning Unit, 4-in-1 Portable Air Conditioner 10000 BTU - Dehumidifier 26L, Fan, Cooler & Sleep Mode, for 100m3 Multi Room Coverage, Low Energy, 24hr Timer, Remote & Window Kit

53% Off

Why We Love It

Eco-friendly with tree planting initiative.
Smart energy-saving drying feature.
Advanced dehumidifying for healthier living.

Main Highlights

POWERFUL INDUSTRIAL COOLING - Beat the heat with the compact S-360, a 4-in-1 air conditioner that delivers rapid cooling down to 16ºC. With an impressive 10,000BTU, the S-360 rapidly cools large rooms up to 100m³ with instant relief, constantly replacing hot air with cool at 270m³/h. Perfect for Multi room coverage, open living or large office spaces.
ONE TOUCH OPERATION - Enjoy effortless cooling with intuitive one-touch controls, a clear digital display, and a handy remote. The S-360 features a programmable timer and 2 fan speeds, giving you full control over your comfort, exactly when you need it.
QUIET COOLING & SLEEP MODE - Stay cool without the noise. Operating at just 53dB - as quiet as a gentle rainfall - the S-360 ensures all-day comfort and enhanced sleep mode for a peaceful night’s sleep. Ideal for bedrooms, nurseries, and offices where peace and quiet matter.
ENERGY-EFFICIENT & ECO-FRIENDLY - Stay cool without the high energy bills. With a Class A energy efficiency rating and sophisticated 1100w motor, the S-360 delivers powerful cooling at low running costs at 26p per hour. It uses eco-friendly R-290 refrigerant for enhanced performance and a smaller environmental footprint to protect the Ozone layer. The S-360 is also equipped with a washable air filter to help maintain peak performance and extend the unit’s lifespan.
ALL YEAR-ROUND PERFORMANCE – The built-in dehumidifier mode removes up to 26 litres of moisture per day to protect your home from damp and mould in winter. Save up to 93% on energy compared to a tumble dryer when using to dry clothes. With additional fan mode keeps air fresh and circulating all year long.

AC Window Seal,Portable Universal Window Kit for Mobile Air Conditioner Unit and Tumble Dryer 400cm/158Inch,Hot Air Stop Air Exchange Guards with Zip and Adhesive Fastener

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Why We Love It

Enhances cooling efficiency.
Saves energy costs.
Easy installation guide.

Main Highlights

【Efficiently Expel Hot Air and Prevent Backflow】The air conditioning window kit helps to exhaust warm air from the air-conditioned room through aircon hose and prevent it from flowing back. It cools your room more effectively, reduces energy consumption, saves electricity costs, reduces carbon dioxide emissions, and protects the environment. What's more, the aircon window seal kit can also prevent flies and spiders from entering the room through the window.
【Wide Application】Specifically designed for mobile air conditioners, drum dryers, and exhaust dryers, our AC window seal kit enables these devices to operate more efficiently by expelling hot air even with the window open. Suitable for tilt and casement windows, but not compatible with sliding windows. Currently available in 6 sizes ranging from 300cm/400cm/500cm/560cm/600cm, with more sizes coming soon. Make sure to measure your window before purchasing to select the correct size.
【Easy Installation】Our product includes air conditioner window seal, instructions, adhesive tape, and cable ties (for securing the hose). No drilling or special tools are required. Simply follow the detailed instructions for a quick installation. Open your window slightly, affix the adhesive tape to the outer or inner frame, attach the air con window seal, and then secure the air conditioner hose in the window seal using the zipper. Use cable ties as needed to keep the hose in place.
【Durable, Waterproof, and Windproof】Our window seal for AC unit is made of durable 210T polyester with a PU coating, providing waterproof and windproof protection. In addition to regulating air exchange, the air conditioning window seal kit also safeguards the indoor environment from dust, dirt, strong winds, sudden rain, and insects. Note: There may be a tiny gap between the zipper of the window seal and the air conditioner hose, but this does not affect its functionality.
【Portable and Reusable】Our portable AC window vent kit is not disposable. After the summer season, simply clean it with water for reuse the following year (the packaging bag can be used for storage). designed with 2 double-ended zippers to adjust the opening size based on the hose diameter, making it suitable for single or dual-hose portable air conditioners. For any questions or concerns, feel free to reach out to us.

SA Products 5M AC Window Seal | Universal Window Insulation Kit for Air Conditioning Unit & Portable Dryer | Air Dryer Vent Hose Guards with Zip

Why We Love It

Durable for long-lasting performance.
Effective hot air prevention.
User-friendly installation and removal.

Main Highlights

UNIVERSAL FIT FOR AC & DRYERS -This 5M AC window seal fits most standard windows and works with air conditioners and portable tumble dryers. A perfect all-in-one window insulation kit for year-round comfort and efficiency.
IMPROVES COOLING & EFFICIENCY -Seal gaps to prevent hot air from entering and cool air from escaping. This air exchange guard boosts your air conditioner's performance, saving energy and reducing electricity costs in the long run.
EASY AIR VENT HOSE SETUP Designed with a zip-close system, this window seal allows quick and secure installation of your air dryer vent hose. Keeps unwanted air and insects out while letting your unit work at full capacity.
TOOL-FREE INSTALLATION No need for drills or tools. This portable air conditioning window kit installs in minutes with simple adhesive tape, making it renter-friendly and ideal for home, office, or travel use.
ENERGY-SAVING & ECO-FRIENDLY - Improve your indoor air quality while being eco-conscious. This window seal minimizes energy waste, enhances AC and dryer performance, and supports a greener, more sustainable home.

Air Conditioner Window Kit,300cm/118 Inch Anti-Mosquito Waterproof Wind Resistant Universal AC Window Seal Kit with Double Zip and Powerful Adhesive Tap for Portable Air Conditioner and Tumble Drye

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Why We Love It

Efficient cooling for your room.
Universal fit for any window.
Durable and reusable for summers.

Main Highlights

🪟【Efficient Cooling Solution】: Our air conditioner window seal effectively directs hot air out of the room, ensuring your air conditioner cools your space quicker and more efficiently. The air con window seal kit leaves out dust and rain, insects and crates a"closed environment" that keeps your room cool for longer, to say goodbye to stuffy rooms.
🪟【Universal Compatibility】: Designed to fit all portable air conditioners and tumble dryers, our Air Conditioner Window Kit offers versatility for various window types, including pull-in and push-out windows,the sliding windows not including.Enjoy the benefits of enhanced cooling performance regardless of your window configuration(up to 300cm/118").
🪟【Durable and Weather-Resistant】: Our window seal for air conditioner is crafted with durable 210T polyester with PU coating fabric, to withstand UV exposure, rain, and other environmental elements.Our window seal is reusable,wash the seal under 40 degrees Celsius and keep it for the following summer. Enjoy long-lasting performance and peace of mind, knowing your investment is protected.
🪟【Environmental Consciousness】: UrbanWave ac window seal kit seals around your open window and then zips around the nozzle of your hose, not only prevent warm air from re-entering your room, the window seal also reduces carbon dioxide emissions to save your electric bills. Join us in our commitment to environmental sustainability while enjoying a cooler indoor environment.
🪟【User-Friendly Installation】: With our innovative design, installation is a breeze. No need for complex tools or drilling holes. Simply follow the included instructions, and within minutes, you'll have a perfectly sealed window, ready to optimize your cooling experience.
🪟【Wide Applications】: Suitable for various scenarios including home, office, dorm, or RV, this Universal Window Seal is a versatile solution for cooling your space efficiently. Four zippers, adjustable opening according to hose diameter, suitable for portable air conditioners with single/double hoses. Ideal for anyone looking to improve their indoor comfort during hot summer months. Contact us if there is any problem.

AC Window Seal, LYUNIT 400cm/158Inch Portable Universal Window Seal Kit for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip

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Why We Love It

Boosts cooling efficiency.
Saves energy, eco-friendly.
Installation is drill-free.

Main Highlights

Improve Cooling-Keep Cool: The sealing of the window increases the cooling performance of the air conditioner. This reduces general energy consumption, as the room cools down faster and maintains a stable temperature in the long term. At the same time, it can prevent the flying insects and spiders from entering the room through the window or window seam, and also prevents the entry of rainwater.
Save Energy-Protect the Earth: Loves the earth, this mobile air conditioning window seal helps to reduce energy consumption and reduce carbon dioxide emissions, which is particularly high in summer due to the massive use of air conditioners. LYUNIT Window seals for mobile air conditioners are the perfect choice for household. It can save your funds in electricity and environmental protection.
Easy to Install-No Drilling Required: Stick the supplied adhesive tape to the window frame, attach the air conditioning window seal to the window and frame and you're done. The window seal for air conditioning reliably prevents the return flow of warm outside air into the air-conditioned interior and directs the warm air from the air conditioner to the outside.
Super Zipper Function: For maximum hold of the climate hose. The window seal has extra strong zips that prevent automatic opening of the closure when using the climate hose. Additional support and attachment are included with the product. And you can open or close the window at any time without removing the window seal.
General AC Window Seal: The air conditioner window seal is suitable for all portable air conditioners. The material of the window seal air conditioner is durable, UV-resistant. The air conditioner window seal fits window with a maximum perimeter of 400 CM. It can also be used in a variety of other devices including dehumidifiers or dryers which come with a flexible exhaust hose.

8.8

Excellent

We scanned 790 products

We reviewed these offers relevant to the Window Air Conditioners 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 ZAFRO, Inventor, Sealey, Princess, NELGOLLE, Avalla, MOEGFY, SA Products, UrbanWave, LYUNIT, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Window Air Conditioners in the market, we considered we took a deep dive into 3951 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 ZAFRO Window Air Conditioners 8000BTU, Cools 350 Sq. Ft,2 Cooling Mode & Fan Speeds,Ultra-Quiet Remote,White. We love many things about this product by ZAFRO. What sets it apart from the competition is Versatile temperature and modes, User-friendly controls and display, Adjustable airflow with louvers.
The best value product for most shoppers and where user satisfaction is continuously the highest is Inventor Portable Air Conditioner Magic 5-1, Powerful 12000BTU Mobile AC, Heating, Dehumidifier, 3 fan speeds, Digital Display, Remote, Window Kit, 24 Hr Timer (WEE/MM0449AA) [Energy Class A] by Inventor based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Window Air Conditioners and the best cost-to-value ratio is S-360 - Avalla Air Conditioning Unit, 4-in-1 Portable Air Conditioner 10000 BTU - Dehumidifier 26L, Fan, Cooler & Sleep Mode, for 100m3 Multi Room Coverage, Low Energy, 24hr Timer, Remote & Window Kitat Avalla with a 53% discount.
Our list of the best Window Air Conditioners 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 Window Air Conditioners in The UK

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We scanned 790 products

We concluded that: