10 Best Silent Air Conditioners in The UK

Last updated on 04/07/2025

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De'Longhi Pinguino PACEX120 Silent | Portable Air Conditioner with Real Feel Technology | 110m³, 11,500 BTU, A Energy Efficiency, Black

Why We Love It

Eco-friendly with no emissions.
Impressive cooling and efficiency.
Quiet, disturbance-free operation.

Main Highlights

The PACEX120 uses a natural high efficiency gas, propane R290, which has no greenhouse emissions
Maximum cooling 11,500 BTU (coverage area: British thermal unit), this machine has the greatest coverage area of the De'Longhi portable range and yet still offers A energy efficiency
12 hour digital timer and thermostat with Real Feel technology
Innovative LED display, designed to provide an immediate feedback about comfort status
This Pinguino unit operates 49-53 dB(A). No sound interference with your relaxation, with the complete insulation package.

De'Longhi Pinguino PACEM90 Silent Portable 9,800 BTU Air Conditioner, 3 in 1 Air Conditioning Unit, Rooms up to 90m³, A Energy Efficiency, Window Kit Included, White

Why We Love It

Optimizes airflow with three speeds.
Reduces humidity efficiently.
Convenient electronic timer control.

Main Highlights

POWERFUL AND EFFECTIVE - Maximise your home comfort with De'Longhi’s powerful 9,800 BTU yet quiet portable air conditioner Perfect for keeping your home cool during hotter days
SILENT TECHNOLOGY - Using Silent Technology, this Pinguino unit operates at 47-63 dB(A), meaning your relaxation won't be disturbed
ENERGY EFFICIENT - Class A Energy Efficiency rating, Refrigerant gas R290, which is up to 696 times more environmentally friendly than traditional gases (696 times compared to the impact of Global Warming of R410 - F-Gas Reg. 517/2014)
EASY TO USE - Manage all functions including temperature, fan speed, timer and cooling function, Control with remote control, or use touch controls on the unit, Integrated handles and castors wheels make for easy transportation
3 IN 1 FUNCTIONALITY - Enjoy ideal comfort thanks to this multifunctional 3-in-1 unit with 3 speed settings, Separate dehumidifying function (46l/ 24 hours) for especially wet seasons or humid rooms and separate fan function to simply circulate air
WINDOW KIT INCLUDED - Window kit is included with 1.6m hose length, for easy installation

Dreo Smart 3-in-1 Portable Air Conditioner, 10000 BTU Drainage-Free Cooling AC Unit, Silent Mobile Air Conditioner for Bedroom, APP/Voice/Remote Control, 24h Timer with Fan &Dehumidifier, AC515S

Why We Love It

Powerful 10,000 BTU cooling capacity.
Quiet operation for peaceful environments.
Smart control via voice assistants.

Main Highlights

𝙂𝙤 𝘽𝙞𝙜 𝙤𝙣 𝘾𝙤𝙤𝙡𝙞𝙣𝙜 𝙋𝙤𝙬𝙚𝙧: The DREO AC515S portable air conditioner brings massive 10,000 BTU ASHRAE cooling capacity that reaches up to 14 ft. Helping you keep the comfortable temp in the sweltering summer
3-𝙞𝙣-1 𝙈𝙤𝙙𝙚 𝙬𝙞𝙩𝙝 𝙁𝙖𝙣 & 𝘿𝙚𝙝𝙪𝙢𝙞𝙙𝙞𝙛𝙞𝙚𝙧: Get more control of the way you cool thanks to the 3-in-1 mode including settings for cooling, dehumidifying and fan control in one, finding the ideal comfort setting is easier than ever with the DREO room air conditioner
𝙄𝙨𝙤𝙡𝙖𝙩𝙚 𝙉𝙤𝙞𝙨𝙚, 𝘼𝙢𝙥𝙡𝙞𝙛𝙮 𝘾𝙤𝙢𝙛𝙤𝙧𝙩: Featuring a new noise isolation system around the compressor, this portable air conditioner is ideal for quiet spaces like bedrooms and offices
𝘿𝙧𝙖𝙞𝙣𝙖𝙜𝙚-𝙛𝙧𝙚𝙚 𝙞𝙣 𝙥𝙤𝙬𝙚𝙧𝙛𝙪𝙡 𝙘𝙤𝙤𝙡𝙞𝙣𝙜 𝙬𝙝𝙚𝙣 𝙩𝙝𝙚 𝙝𝙪𝙢𝙞𝙙𝙞𝙛𝙮 𝙪𝙣𝙙𝙚𝙧 85%: Bring uninterrupted cold air to your room, thanks to DREO's new AC unit design, a dedicated condenser and water pump helps transfer excess water and reduces the need for drainage compared to traditional floor air conditioners
𝙎𝙢𝙖𝙧𝙩 𝘾𝙤𝙤𝙡𝙞𝙣𝙜 𝙖𝙩 𝙔𝙤𝙪𝙧 𝙁𝙞𝙣𝙜𝙚𝙧𝙩𝙞𝙥𝙨: Use your favorite voice assistant (compatible with Amazon Alexa or Google Home) or the fully-featured Dreo App to control every aspect of your cooling experience, from multiple modes to fan speeds, timers and schedules, this standing AC has it all
𝙎𝙪𝙥𝙚𝙧𝙗 𝘾𝙪𝙨𝙩𝙤𝙢𝙚𝙧 𝙎𝙚𝙧𝙫𝙞𝙘𝙚: Our friendly customer support works around the clock to solve any issues and give you all the product guidance needed when using Dreo AC Series

BLU-09 9,000 BTU Portable Air Conditioner Portable 3-1 Air Conditioner, Dehumidifier, Cooling Fan with 3 Fan Speeds, Window Sheet for UK Windows, Digital Display & Remote Control

Why We Love It

Versatile 3-in-1 functionality.
Eco-friendly with R290 refrigerant.
Hassle-free installation.

Main Highlights

3-in-1 Multi Functional: Portable air conditioning unit with cooling, fan and dehumidifier function, complete with 1.5m expandable exhaust hose included. The BLU09 9,000 BTU portable air conditioner delivers an instant cooling relief for your home or work place. Suitable for rooms up to 20 square metres. The BLU09 does not have a heating function.
Complimentary Window Sheet for UK Windows: Now supplied with a high quality window sheet that has been especially designed for UK Outward/Inward Opening Windows so there is no need to buy a separate window sheet.
R290 Refrigerant: Uses natural high efficiency R290 with zero greenhouse emissions. The natural refrigerant is non-toxic, eco friendly and also offers energy savings.
Self Evaporating Function: Reduces the need to regularly remove water. The unit recycles approximately half of the condensed water and uses it to cool off the inner cooling coils, which allows the unit to run more efficiently. It then disperses, or evaporates, the remaining water, along with the hot air, via the hot air duct. This cuts out any unnecessary water collecting inside the unit or in an outside container.
Easy to Set Up: Simply set up the hose kit provided, place out of any UK window opening, plug and play in a few simple steps. Hose kit provided is suitable for use with any UK window opening. The complimentary window seal kit can be used with outward or inward opening UK casement windows to seal your space & prevent heat gains.
Additional Features for your Convenience: Window Sheet for UK Windows, Remote Control with LED Display to switch between Modes, Set Temperature & View °F & °C. Louvers allow maximum cooling efficiency, easy-roll omnidirectional castors help you move your "BLU09CO" wherever it is needed most.
Sound Pressure Level: 49-53dBA. Sound Power Level: 62 - 64dBA. The sound pressure level is the pressure disturbance in the atmosphere measured using predefined conditions such as the location of the equipment and environmental conditions - the sound pressure is ultimately what our ears hear.

Air Conditioning Unit 9000 BTU, LEENON Portable Air Conditioners, 4-in-1 Cooling Dehumidifier Fan & Sleep Mode, 2-Speeds Air Conditioners for Home, Remote Control, 24H Timer, Window Kit Included

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Why We Love It

Powerful 9000BTU cooling capacity.
Versatile 3-in-1 functionality available.
Easy installation without extra tools.

Main Highlights

9000 BTU Powerful Cooling: LEENON air conditioning unit provides 9000BTU cooling power by equipped with powerful and advanced refrigeration compressor technology, quickly cooling spaces up to 370 sq.ft, perfect for home, kitchen, basement, small storage or other small-to-medium spaces, our air conditioner ensure that your room stays down to 17 °C on the hot days on the hot days.
4-in-1 Cooling/Dehumidifier/Fan/ Slep Mode: LEENON portable air conditioner featurs cooling, fan, and dehumidifier modes in one all；Continuous dehumidifier mode makes your room dry and comfortable by emoveing excess moisture from the air; 2-speed fan mode creates a circulation of fresh air throughout your room. An energy-saving sleep mode that auto goes at a lower fan to conserve energy and keep you comfortable at night.
Simple Operation with Remote Contro: LEENON portable air conditioning unit offers a multifunctional control panel or remote control for effortless operation. Easily adjust cooling modes, temperatures (17 to 30 °C ), fan speeds etc.(Humidity is Cannot be adjusted in continuous dehumidification mode).With the LED display, you can easily track real-time temperature changes, and the child lock ensures no accidental presses
[Hassle-Free Installation & Movability] LEENON 9000 BTU air conditioner portable is designed for portability, 4Pcs roll casters wheels and side handles allows you easily move airconditioner between rooms. The air filter is easily removable for easy cleaning. Window panel kit and large exhaust hose are included, hassle-free to install, air conditioning fits most sliding windows and single/double hung windows.(Not: As dehumidifier,connect drain hose on upper outlet to continuously drain water)
24H Timer & A-Rated Energy: Our airconditioning portable unit have a 24-hour timer function, which allows you to freely set the cooling time to help keep your room cool and avoid wasting energy. In addition, this air conditioner A-rated for energy efficiency and uses eco-friendly R290 refrigerant for a greener cooling solution. Please regularly clean the air filter.
Reliable Customer Service: LEENON Offers satisfied customer service.If you have any problem with air conditioner unit or are not completely satisfied, please contact us directly, and we will respond within 12 hours.

Igenix IG9907 3-in-1 Portable Air Conditioner, Cooling, Fan & Dehumidifier, 7000 BTU, 24 Hour Timer, 2-Speed, Remote Control & Window Venting Kit Included

3% Off

Why We Love It

Vent through wall or window.
Remote control and timer feature.
Compact with warranty protection.

Main Highlights

Portable Air Conditioner – Compact and lightweight design ideal for cooling bedrooms, home offices, apartments, and small spaces.
Flexible Venting Options – Includes a 1.5m exhaust hose for easy venting through a wall or directly out a window.
Remote Control Included – Conveniently operate your AC from across the room with intuitive remote access.
24-Hour Timer – Set customized cooling schedules with the built-in programmable timer for energy-efficient comfort.
2 Fan Speeds – Choose between two fan speed settings to match your ideal airflow and temperature.
Easy Installation – No permanent setup required – perfect for renters, frequent movers, or temporary use.
Quiet Operation – Designed to cool effectively without excessive noise, ideal for night-time or work environments.
Efficient Cooling Performance – Delivers powerful air conditioning in a compact, space-saving footprint.
2-Year Warranty – Backed by a two-year manufacturer warranty (register online for coverage and support)

SereneLife Portable Air Conditioning Unit, 3-in-1 Powerful Ac, 12,000 BTU Mobile Air Conditioners, w/Dehumidifier, Fan mode + Heat, Remote Control, Window Venting Kit Included

Why We Love It

Lightweight and easily portable.
Reduces humidity efficiently.
Operates all year round.

Main Highlights

HANDY AND PORTABLE: The Serene Life Portable Air Conditioner System features a lightweight, handy, sleek body design intended to be used in the bedroom, living room, or garage at home or office. It features rolling wheels for easy portability. Controller type: Remote Control. Wattage: 1350 watts
BUILT-IN DEHUMIDIFIER: You donâ€t only get the cooling effect of the portable AC but also help reduce humidity levels, a huge financial and space saving!
4 OPERATING MODES: The compact floor AC indoor cooler conditioning unit features a simple electric plug-in operation and has 4 modes - cooling, heating, dehumidifier, and fan. Also features automatic swing mode with moving wind vent for maximum air circulation
REMOTE CONTROL: Features a digital touch button control panel which includes the power, mode, timer, temperature, and fan speed settings. Other functions such as unit selector (°C/°F), sleep key can be adjusted using the included remote control
GREAT FOR ALL YEAR ROUND: With 12,000 BTU (ASHRAE) / 7,000 BTU (SACC) cooling power and 12,000 BTU heating power, this is the best option to save space and money. The cold air can cover a room up to 51 square meters. Airflow is rated at 380 cubic meters per hour, moisture removal/dehumidifier at 1.8 liters per hour with an operating noise level of only 56-59 dBa

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.

NETTA Portable Air Conditioner 3-IN-1 8000BTU, Dehumidifier, Cooling Fan - WiFi Smart App, 3 Speed Settings, Weekly Timer, Remote Control [Energy Class A] [Energy Class A]

Why We Love It

Efficient cooling capabilities.
Smartphone control convenience.
Energy-saving design.

Main Highlights

POWERFUL AIR CONDITIONER: 8,000 BTU cooling power ensures effective cooling down to 17°C in rooms up to 20 square metres. This makes it ideal for use in places such as offices, gyms, shops and homes. This unit has a fan setting and also a dehumidifying function which is capable of extracting up to 2L per hour.
CONTROL THROUGH WI-FI: Connect your smartphone to the Air Conditioner through the Nethome Plus app for ultimate control. This allows you to set the temperature, timer and other functions from the comfort of your phone. This unit is also voice-command enabled and is compatible with Amazon Alexa and Google Home for iPhone and Android (Please note that voice commands can only adjust the power and temperature settings).
ENERGY EFFICIENT: This product is economical to run and has a Class A energy efficiency rating. This is due to its low power consumption and its use of R290 refrigerant, which is cheaper and more eco-friendly than other air conditioning gasses.
KEY FEATURES: There are three speed options to choose from (high, low & sleep) as well as a thermostat that ranges from 17-35°C. There is a 24-hour timer (set in 30 minute increments) that can be controlled through the touch control panel or the remote control. The compact and portable design features castors (wheels) for easy mobility. Exhaust Hose and water pipe are included with this product
DIMENSIONS: Product Size: 32.9cm x 31.8cm x 63.4cm (22.5kg). Carton Size: 38.3cm x 36.1cm x 83.5cm (25kg).

Aptorlty Mobile Air Conditioners, 4 in 1 Tower Fan/Air Purifier/Humidifier/Evaporative Coolers 65W 1-24H Timer 4 Mode 8M/S Wind w/ 4 Ice Box 10M Remote Control Air Conditioning for Home/Bedroom/Office

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Why We Love It

4-in-1 functionality saves space.
Whisper-quiet for peaceful nights.
Eco-friendly cooling saves money.

Main Highlights

🍃4-in-1 Portable Air Conditioner 🍃🍃Compare traditional tower fan is just a fan, our tower fan cooler integrates fan, humidifier, air purifier and mobile air conditioner in one. Just add water and ice packs (4 included), press the cooling button and enjoy cool air quickly.
🍃🍃 Larger Dual Air Outlet Design 🍃🍃 Optimal 43.3-inch use height air conditioner unit. 18.99‘’ long air outlet (9.44‘’ on the upper and lower layers), the upper layer can be manually rotated 360 degrees, and the lower air outlet can automatically rotate 60°. Help the can blow air to the entire room, without being restricted by angle, cooling range is wider.
🍃 24-hour timer 🍃🍃 The evaporative coolers consumes only 65W, automatically turns off the screen after 2 minutes of inactivity, and operates the evaporative cooler with 50dB low noise, giving you a quiet and comfortable night. 1-24 hour timer, you can select the time according to your needs and create your own customized cooling space.
🍃🍃 Energy-saving & Environmentally Friendly Air Cooler🍃🍃 Unlike expensive air conditioners, our air cooler requires no window ducts and you can move it anywhere in your home to the area you want to cool. Our 65W portable air conditioning unit has no compressor and does not use chemical refrigerants, making it more environmentally friendly and safer. No need for huge electricity bills, allowing you to experience personal cooling and comfort at a low cost.
🍃🍃Multiple Modes to Meet Your Needs 🍃🍃 The quiet portable tower air conditioner has 4 modes (Normal/Natural/Sleep/Cool) and 3 speeds (Low/Medium/High). This portable air cooler comes in a variety of options, such as comfortable cooling for relaxing, powerful breeze for yoga or workouts.
🍃🍃Easy to Clean 🍃🍃The silent portable air conditioner has a 4L water tank that can work continuously for up to 14 hours. There is no need to add water frequently. You only need to open the plug at the bottom to easily drain the remaining water in the water tank. It is very convenient to clean and drain. You don’t have to worry about the water tank. The water inside produces impurities due to retention, ensuring clean and cool air for you.
🍃🍃LED Screen & 10M Remote Control 🍃🍃 The air coolers for home with humanized design is more convenient to use. The LED control panel completes your smart lifestyle, and you can set your exclusive cooling mode with the push of a button. Equipped with a remote control, the maximum control distance reaches 10M. Whether you are on the sofa or in bed, you can easily control our mobile air conditioner and enjoy the cool air

9.1

Superb

We scanned 1525 products

We reviewed these offers relevant to the Silent 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 De'Longhi, Dreo, BLU, LEENON, Igenix, SereneLife, NELGOLLE, NETTA, Aptorlty, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Silent Air Conditioners in the market, we considered we took a deep dive into 7626 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 De'Longhi Pinguino PACEX120 Silent | Portable Air Conditioner with Real Feel Technology | 110m³, 11,500 BTU, A Energy Efficiency, Black. We love many things about this product by De'Longhi. What sets it apart from the competition is Eco-friendly with no emissions, Impressive cooling and efficiency, Quiet, disturbance-free operation.
The best value product for most shoppers and where user satisfaction is continuously the highest is De'Longhi Pinguino PACEM90 Silent Portable 9,800 BTU Air Conditioner, 3 in 1 Air Conditioning Unit, Rooms up to 90m³, A Energy Efficiency, Window Kit Included, White by De'Longhi based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Silent Air Conditioners and the best cost-to-value ratio is Igenix IG9907 3-in-1 Portable Air Conditioner, Cooling, Fan & Dehumidifier, 7000 BTU, 24 Hour Timer, 2-Speed, Remote Control & Window Venting Kit Includedat Igenix with a 3% discount.
Our list of the best Silent 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 Silent Air Conditioners in The UK

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We scanned 1525 products

We concluded that: