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10 Best Room Air Conditioners 2025 in the UK

#1

Winner

10.0 score

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Pro Breeze

Pro Breeze 4-in-1 Portable Air Conditioner 9000 BTU – Smart Home WiFi Compatible - 24 Hour Timer & Window Venting Kit Included. Powerful Air Conditioning Unit with Class A Energy Efficiency Rating

Cooling Capacity (BTU): 9000
Noise Level: 54 dB
Installation Type: Window
Additional Features: Remote, Timer, WiFi, Wheels, Fast Cooling

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Chosen by 1294 this week

#2

10.0 score

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Pro Breeze

Pro Breeze 4-in-1 Air Cooler with 10 Litre Capacity, Remote Control, 3 Fan Speeds & LED Display. Powerful Evaporative Air Cooler with Built-in 7.5 Hour Timer & Automatic Oscillation for Home & Office

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50% OFF
#3

9.9 score

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Pro Breeze

Pro Breeze® 5L Evaporative Air Cooler & Portable Tower Fan with 3 Fan Speeds, Remote Control, Automatic Oscillation, 7-Hour Digital Timer & Sleep, Natural and Humidification Mode for Home and Office

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25% OFF
#4

9.8 score

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Pro Breeze

Pro Breeze 4-in-1 Smart Portable Air Conditioner 5000 BTU with Wifi, Remote Control, 24 Hour Timer & Dual Window Venting Kit Included - Powerful Air Conditioning Unit for Home

Cooling Capacity (BTU): 5000
Noise Level: 52.3 dB
Installation Type: Window
Additional Features: Alexa, Dehumidifier, Portable, Wifi

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#5

9.7 score

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Pro Breeze

Pro Breeze 4-in-1 Portable Air Conditioner 7000 BTU with Remote Control, 24 Hour Timer & Dual Window Venting Kit Included. Powerful Air Conditioning Unit with Class A Energy Efficiency Rating

Cooling Capacity (BTU): 7000
Noise Level: 53 dB
Installation Type: Window
Additional Features: Sleep Mode, Dehumidifier

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Related Products

#6

9.5 score

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KGOGO

Air Conditioning Unit Portable Air Conditioner 9000 BTU 4-in-1 Dehumidifier, Cooling Fan with 2 Speeds, Digital Display & Remote Control, Window Kit, 24 Hour Timer for Room Up to 269sq.ft

Cooling Capacity (BTU): 9000
Noise Level: 60 dB
Installation Type: Portable with Window Kit
Additional Features: Remote Controlled, Silent Mode, Dust Filter

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#7

9.3 score

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BLACK+DECKER

BLACK+DECKER BXAC40008GB Portable 3-in-1 Air Conditioner with 24-Hour Timer, Remote Control, 12,000 BTU, White

Cooling Capacity (BTU): 12,000
Noise Level: 65 dB
Installation Type: Portable
Additional Features: 24 hour timer, remote, overheat protection

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43% OFF
#8

9.0 score

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De'Longhi

De'Longhi Pinguino Compact PACES72 Classic Compact Portable 8,300 BTU Air Conditioner, 3 in 1 Air Conditioning Unit, Rooms up to 60m³, A Energy Efficiency, Window Kit Included, Energy Class A, White

Cooling Capacity (BTU): 8300 British Thermal Units
Noise Level: 65 dB
Installation Type: Window
Additional Features: Portable, 3-in-1, remote, timer, kit

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7% OFF
#9

8.7 score

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Belaco

Belaco Portable Air Conditioner, 9000 BTU 4-in-1, Air Conditioning Unit, Fan & Cooling, Dehumidifier, Remote control with 24Hr Timer, Dual Window kit Included with Class A Energy Efficiency Rating

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#10

8.4 score

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Inventor

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]

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How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

Pro Breeze 4-in-1 Portable Air Conditioner 9000 BTU – Smart Home WiFi Compatible - 24 Hour Timer & Window Venting Kit Included. Powerful Air Conditioning Unit with Class A Energy Efficiency Rating

10.0  score

Pro Breeze 4-in-1 Portable Air Conditioner 9000 BTU – Smart Home WiFi Compatible - 24 Hour Timer & Window Venting Kit Included. Powerful Air Conditioning Unit with Class A Energy Efficiency Rating

Pro Breeze

10.0  score

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Rating
10.0
Chosen by1,294
Cooling Capacity (BTU)
Noise Level
Installation Type
Cooling Capacity (BTU)
The Pro Breeze efficiently cools rooms to a comfortable temperature, even in challenging conditions.
Noise Level
The air conditioner's noise level is noticeable, described as a 'dull droning' but manageable for some.
Installation Type
Installation is straightforward, with helpful window kits for different window types.
Additional Features
Smart home integration works flawlessly with Alexa, adding convenience to its operation.

The Pro Breeze 4-in-1 Portable Air Conditioner offers a robust 9000 BTU cooling capacity, making it suitable for medium to large spaces like living rooms, bedrooms, and offices. Its effective cooling can bring temperatures down to 16°C, which is quite efficient for its class. This unit also comes with smart home capabilities, allowing you to control it through a smartphone app or voice commands via Amazon Alexa and Google Home. It provides versatile functionality with four operating modes - air cooling, dehumidifying, fan-only, and sleep modes - all manageable via a digital display or remote control.

Energy efficiency is a notable strength here, with a Class A rating ensuring it’s gentle on your energy bills. The unit uses R290 refrigerant, touted as significantly more eco-friendly than conventional options, appealing to environmentally conscious users. Installation is straightforward with included window venting kits designed for both slide and hinged windows, and its compact design ensures minimal space intrusion.

On the downside, the noise level sits at 54 dB, which might be noticeable in quieter environments. While it’s portable, weighing 24.5 kg, it could be cumbersome to move frequently. Additionally, its Smart Home features depend on WiFi connectivity, which could limit usage in areas with poor internet access. The Seasonal Energy Efficiency Ratio (SEER) is on the lower side at 2.6, indicating room for improvement in efficiency across varying temperatures. This air conditioner is ideal for users seeking a compact, smart, and energy-efficient cooling solution with multiple functions. However, those sensitive to noise or requiring frequent repositioning might want to consider these factors before purchasing.

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Rating
10.0
Chosen by1,294
Cooling Capacity (BTU)
Noise Level
Installation Type
Cooling Capacity (BTU)
The Pro Breeze efficiently cools rooms to a comfortable temperature, even in challenging conditions.
Noise Level
The air conditioner's noise level is noticeable, described as a 'dull droning' but manageable for some.
Installation Type
Installation is straightforward, with helpful window kits for different window types.
Additional Features
Smart home integration works flawlessly with Alexa, adding convenience to its operation.

Buying Guide for the Best Room Air Conditioners

Choosing the right room air conditioner involves understanding your cooling needs, the size of the space you want to cool, and the features that will provide you with the most comfort and efficiency. It's important to consider the size of the unit, its energy efficiency, noise levels, and any additional features that might enhance your experience. By focusing on these key specifications, you can find an air conditioner that not only cools your room effectively but also fits your lifestyle and preferences.
Cooling Capacity (BTU)Cooling capacity, measured in British Thermal Units (BTU), indicates how much heat an air conditioner can remove from a room per hour. This is crucial because a unit with too low a BTU won't cool the room effectively, while one with too high a BTU will cool too quickly without removing humidity, leading to a damp, uncomfortable environment. To choose the right BTU, consider the size of your room: small rooms (100-300 sq ft) typically need 5,000-7,000 BTU, medium rooms (300-500 sq ft) require 8,000-12,000 BTU, and large rooms (500-800 sq ft) may need 13,000-18,000 BTU. Match the BTU to your room size for optimal comfort.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures how efficiently an air conditioner uses energy to cool a room. A higher EER means better energy efficiency, which can lead to lower electricity bills. EER is calculated by dividing the BTU by the power consumption in watts. Look for units with an EER of 10 or higher for good efficiency. If you use your air conditioner frequently, a higher EER can save you money in the long run, making it a smart choice for energy-conscious consumers.
Noise LevelNoise level, measured in decibels (dB), indicates how loud an air conditioner will be when operating. This is important for maintaining a comfortable environment, especially in bedrooms or living areas where quiet is preferred. Air conditioners typically range from 40 dB (quiet) to 60 dB (louder). If you are sensitive to noise or plan to use the unit in a quiet space, look for models with lower decibel ratings. Consider your tolerance for noise and the location of the unit when making your choice.
Installation TypeInstallation type refers to how the air conditioner is set up in your room. Common types include window units, portable units, and through-the-wall units. Window units are popular for their efficiency and ease of installation but require a suitable window. Portable units offer flexibility and can be moved between rooms but may be less efficient. Through-the-wall units are permanent installations that require a wall opening but offer a clean look. Choose based on your room's layout, available space, and whether you need a permanent or temporary solution.
Additional FeaturesAdditional features can enhance the functionality and convenience of an air conditioner. These may include remote controls, programmable timers, sleep modes, and smart connectivity for control via smartphone apps. Features like dehumidifiers and air purifiers can also improve air quality. Consider which features align with your lifestyle and needs. For instance, if you value convenience, a unit with smart connectivity might be ideal, while a dehumidifier feature could be beneficial in humid climates.