Advertising Disclosure Quiet Room Air Conditioner Comparison - July 2025
3 Best Quiet Room Air Conditioner In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.9Exceptional | 2  9.7Exceptional | 3  9.5Excellent |
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ModelAriston MOBIS PLUS 10 UK portable air conditioner, 10000 BTU, A+ energy class, white - Manufactured to be installed in UK (3381530) | Model S-150 - Avalla Portable Air Conditioner 8000 BTU - 4-in-1 AC with Dehumidifier, Fan & Sleep Mode - Quiet 52dB, Remote Control, Digital Display, Timer & Window Kit - Cools Large Rooms up to 80m³ | Model COSTWAY 4-in-1 Portable Air Conditioner, 8000 BTU Air Cooler, Dehumidifier, Fan, Sleep Mode with with WiFi Smart APP, 24H Timer, 2 Speed, Remote Control, LED Display & Window Kit |
BrandAriston | Brand Avalla | Brand COSTWAY |
Reviews | Reviews | Reviews  |
Tech Specs | ||
product dimensions 39.7 x 46.7 x 76.5 cm 31.8 kg | product dimensions - | product dimensions 69 x 33 x 31 cm 23 kg |
Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1AristonAriston MOBIS PLUS 10 UK portable air conditioner, 10000 BTU, A+ energy class, white - Manufactured to be installed in UK (3381530)
Why we love it
The Mobis Plus 10 air conditioner is designed for easy installation in the UK.
It has a cooling capacity of 10,000 BTU/h and is very efficient, with an EER of 3.1.
It is easy to use, with an intuitive interface and remote control, and is also very quiet, with an operating noise level of only 50 dB A .
Main highlights- SUPER SILENT: Quiet operation at 50 dB(A), making your environment even more comfortable
- RECOMMENDED AREA 13-20m²
- HIGH EFFICIENCY: The Mobis range is designed to ensure high efficiency operation, with the Mobis Plus 10 model boasting an EER of 3.1 and therefore achieving A+ energy class
- EASY TEMPERATURE REGULATION: Easy to use, thanks to its intuitive interface and remote control, Mobis Plus 10 ensures precise temperature regulation to enjoy full comfort in any indoor environment
- COOLING CAPACITY 10,000 BTU/h
- Air Conditioner designed and manufactured to be installed in UK
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9.7
2Avalla
S-150 - Avalla Portable Air Conditioner 8000 BTU - 4-in-1 AC with Dehumidifier, Fan & Sleep Mode - Quiet 52dB, Remote Control, Digital Display, Timer & Window Kit - Cools Large Rooms up to 80m³
Why we love it
The output is efficient and can cover a large area.
It is safe for the environment.
It is easy to operate and has many useful features.
Main highlights- QUIET COOLING & SLEEP MODE - Stay cool without the noise. Operating at just 52dB - as quiet as a gentle rainfall - the S-150 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.
- POWERFUL COOLING - Beat the heat with the compact S-150, a 4-in-1 air conditioner that delivers rapid cooling down to 16ºC. With an impressive 8000BTU, the S-150 rapidly cools large rooms up to 80m³ with instant relief, constantly replacing hot air with cool at 290m³/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-150 features a programmable timer and 2 fan speeds, giving you full control over your comfort, exactly when you need it.
- ENERGY-EFFICIENT & ECO-FRIENDLY - Stay cool without the high energy bills. With a Class A energy efficiency rating and sophisticated 891w motor, the S-150 delivers powerful cooling at ultra-low running costs at just 19p per hour. It uses eco-friendly R-290 refrigerant for enhanced performance and a smaller environmental footprint to protect the Ozone layer. The S-150 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 removes up to 22 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.
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9.5
3COSTWAY
COSTWAY 4-in-1 Portable Air Conditioner, 8000 BTU Air Cooler, Dehumidifier, Fan, Sleep Mode with with WiFi Smart APP, 24H Timer, 2 Speed, Remote Control, LED Display & Window Kit
Why we love it
4 modes 24H timer.
Convenient WIFI connection.
Whole room cooling.
Main highlights- 【Whole Room Cooling】 This portable air conditioner with a powerful cooling capacity of 8000 BTU can cool down a wide area of 25 m². Meanwhile, the adjustable air louvers (left/right manual swing 96°, up/down manual swing 117°) enable you to enjoy coolness from every direction.
- 【Low Noise & Thoughtful Details】 This portable AC unit with quiet operation (≤65 dB) won't bother you. You can turn on the sleep mode for quieter cooling-noise level 52dB and enjoy peaceful sleep. The detachable and washable filter requires low maintenance. Besides, there are 2 ways to drain: continuous or manual drainage.
- 【Easy to Install and Move】 Equipped with complete accessories and detailed instruction, this mobile air conditioner can be installed easily. The adjustable window kit fits various windows: vertical sliding windows and horizontal sliding windows. What's more, 2 built-in handles and 4 universal wheels make it easy to move anywhere.
- 【Convenient WIFI Connection】 With the smart life app, you can turn on and set all the settings of this air conditioner before getting back home, including the speed, timer, mode, temperature, etc. In addition, the LED touch control panel and handy remote control also ensure easy operation.
- 【4 Modes & 1-24H Timer】 This air conditioner has 4 modes to choose from - cooling, dehumidifying, fan and sleep mode, which can perfectly meet different needs. There are 2 speeds for you to choose: high/low. Moreover, you can preset a 1-24 hour timer to automatically turn off the AC unit and save energy.
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Features
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Consumer Reviews
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Popularity
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Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
