10 Best Room Air Conditioners 2025 in the UK

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.

The BLACK+DECKER BXAC40008GB is a versatile 3-in-1 portable air conditioner ideal for larger rooms up to 24 square meters. It offers a robust cooling capacity of 12,000 BTU, making it suitable for hot summer days. It efficiently serves as an air conditioner, dehumidifier, and fan, providing a comprehensive approach to maintaining a comfortable and healthy indoor environment. With its 3.4KW cooling power, it can effectively produce a cooling breeze with adjustable speed settings, ensuring optimal comfort.

In terms of energy efficiency, it boasts a Class A Energy Efficiency rating, which is commendable for keeping running costs low. The noise level is 65 dB, which is relatively quiet but could be slightly disruptive for some during nighttime use. The installation is straightforward as it is a portable unit, making it convenient for those who cannot install a permanent air conditioning system. Its additional features like remote control, 24-hour timer, and overheat protection add to its usability.

The 1.5L water tray is a notable feature for its dehumidifying function, capable of extracting up to 40 liters of moisture per day, reducing issues like dampness and mold in your living space. This makes it particularly beneficial for those in humid climates. It is slightly heavy at 26.7 kg, which might be cumbersome to move frequently. It's a good choice for individuals looking for a multifunctional air conditioner with decent energy efficiency and noise levels, especially in areas where moisture control is a priority.

The Pro Breeze 4-in-1 Portable Air Conditioner is a versatile option for those looking to cool small to medium-sized spaces. With a cooling capacity of 7000 BTU, it is effective in maintaining a comfortable temperature, though it might struggle in particularly large or very hot areas. Its standout feature is its energy efficiency, boasting a Class A rating, which means it can help keep electricity bills down even when used frequently. Additionally, it utilizes R290 refrigerant, making it a more eco-friendly choice compared to some traditional models.

Equipped with a digital display and remote control, the unit offers ease of use with adjustable settings including auto, cooling, dehumidifying, and fan-only modes. The 24-hour timer and sleep mode are thoughtful additions that can help optimize energy use. The noise level, at 53 dB, is relatively moderate, making it suitable for living rooms or offices but might be slightly intrusive during sleeping hours for some users.

Installation is simplified with the inclusion of dual window venting kits, suitable for both slide and hinged windows, although some users may find the setup requires a bit of effort due to its size and weight of 24.5 kg. The 4-in-1 functionality offers versatility in usage, but the unit's seasonal energy efficiency ratio (SEER) of 2.63 may not be the best in class for those specifically prioritizing long-term energy savings. Prospective buyers should consider their specific needs for noise levels and cooling power to ensure it meets their expectations.