10 Best Quiet Air Conditioners 2025 in the UK

The Pro Breeze 4-in-1 Portable Air Conditioner offers a good balance of power and convenience for those looking for a quiet and efficient cooling solution. Its 9000 BTU cooling capacity is suitable for medium to large rooms, effectively reducing temperatures even on hot days. Its noise level is at 54 dB, which, while not silent, is relatively quiet for a portable unit, making it an appropriate choice for bedrooms and living areas where peace is desired.

This model stands out with its smart home compatibility, allowing users to control it via a smartphone app or through voice commands with Amazon Alexa and Google Home. This adds a layer of ease, especially for tech-savvy users who appreciate smart integrations. Additionally, its four-in-one functionality includes cooling, dehumidifying, fan-only, and sleep modes, making it versatile for different climate control needs.

Its energy efficiency is noteworthy, boasting a Class A energy rating, which means it cools efficiently without significantly hiking up electricity bills. The use of R290 refrigerant is a plus for those who are environmentally conscious, as it's much more eco-friendly than older refrigerants.

Installation is simplified with the inclusion of window venting kits, making it accessible for users without requiring professional help. However, it is worth noting that this is a window installation type, which may not be suitable for all window shapes and sizes.

In terms of portability, the unit is manageable with built-in wheels, although at 24.5 kg, it may require some effort to move around frequently. Lastly, the product's relatively affordable price and its good customer ratings suggest that it has a history of satisfying users.

While it covers many bases, potential buyers should consider the relatively average noise level and installation requirements to ensure it fits their specific needs.

The Pro Breeze 4-in-1 Smart Portable Air Conditioner offers a mix of convenience and functionality that suits a variety of spaces, from small to large rooms. With a cooling capacity of 5000 BTU, it’s particularly effective for those needing moderate cooling power. Its noise level, at 52.3 dB, is reasonably quiet for a portable unit, making it a good fit for quieter spaces like bedrooms and home offices. Featuring a 5-star energy rating and an energy efficiency of A, it promises economical operation.

The inclusion of WiFi capability and compatibility with Alexa and Google Home provides modern control options, allowing for remote operation and voice commands. This feature is particularly helpful for tech-savvy users who appreciate smart home integrations. Installation is straightforward as it comes with two window venting kits, making it adaptable to different window types.

The air conditioner’s multifunctionality is also a highlight, with four modes including cooling, dehumidifying, fan-only, and energy-saving sleep mode, enhancing its versatility for different climate needs. However, its cooling power of 5000 BTU may not be sufficient for larger or poorly insulated areas during extreme heatwaves. The unit’s size and weight (18 kg) could also pose a challenge when moving it between rooms. Additionally, the water capacity is limited to 500 millilitres, potentially requiring frequent emptying in humid environments.

The BLACK+DECKER BXAC40008GB Portable 3-in-1 Air Conditioner offers a versatile solution with its cooling, dehumidifying, and fan functionalities. With a powerful 12,000 BTU output, it is capable of cooling rooms up to 24 square meters efficiently. Its Class A Energy Efficiency ensures it operates with low environmental impact and running costs. The unit features three fan speeds, allowing users to adjust the airflow to their preference. One of its main advantages is the low noise level; operating at just 53 dB on the low cool setting, it is relatively quiet and suitable for use during the night for a comfortable sleep.

The dehumidifying function is robust, extracting up to 40 liters of moisture per day, which can prevent damp and mildew in your home. It comes with a 1.5L water tray and a self-evaporating system for easy maintenance. Additional features include a 24-hour timer, remote control, and overheat protection, enhancing user convenience and safety. While its portability and easy installation make it a practical choice, its weight of 26.7 kg might make it cumbersome to move frequently. This air conditioner is a solid option for those seeking a multi-functional device with energy efficiency and relatively quiet operation, though it may not be the quietest option available on the market.