Best air conditioning unit 18000 BTU in UK 2025

Updated on 08/09/2025
#1
De'Longhi
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  • Uses eco-friendly propane R290 gas with no greenhouse emissions
  • Provides maximum cooling of 11,500 BTU, ensuring extensive coverage and energy efficiency
  • Features a 12-hour digital timer and thermostat with Real Feel technology for precise temperature control
  • Equipped with an LED display for real-time comfort status updates
  • Operates quietly at 49-53 dB(A), minimizing sound disturbances with effective insulation
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  • Uses eco-friendly propane R290 gas with no greenhouse emissions
  • Provides maximum cooling of 11,500 BTU, ensuring extensive coverage and energy efficiency
  • Features a 12-hour digital timer and thermostat with Real Feel technology for precise temperature control
  • Equipped with an LED display for real-time comfort status updates
  • Operates quietly at 49-53 dB(A), minimizing sound disturbances with effective insulation
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#2
Value for Money
De'Longhi
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  • Intelligent 11,000 BTU air conditioner designed for spaces up to 110m³, featuring Silent Technology for up to 50% noise reduction.
  • Control the unit remotely via the De'Longhi Comfort app or voice assistance, with personalized settings through MyEcoRealFeel and a geofencing feature.
  • Compatible with voice-enabled speakers like Amazon Alexa and Google Assistant for hands-free operation.
  • Smart Sensing technology monitors temperature and humidity, ensuring optimal cooling based on your surroundings.
  • 3-in-1 functionality includes cooling, dehumidifying (41L/24 hours), and fan settings, catering to various climates and personal preferences.
  • Class A+ energy efficiency rating, promoting 30% energy savings with MyEcoRealFeel technology.
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  • Intelligent 11,000 BTU air conditioner designed for spaces up to 110m³, featuring Silent Technology for up to 50% noise reduction.
  • Control the unit remotely via the De'Longhi Comfort app or voice assistance, with personalized settings through MyEcoRealFeel and a geofencing feature.
  • Compatible with voice-enabled speakers like Amazon Alexa and Google Assistant for hands-free operation.
  • Smart Sensing technology monitors temperature and humidity, ensuring optimal cooling based on your surroundings.
  • 3-in-1 functionality includes cooling, dehumidifying (41L/24 hours), and fan settings, catering to various climates and personal preferences.
  • Class A+ energy efficiency rating, promoting 30% energy savings with MyEcoRealFeel technology.
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#3
Generic
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  • 5-in-1 functionality including cooling, heating, fan, air purification, and dehumidification, saving space and costs.
  • Delivers 18,000 BTUs with 850 m3/h airflow for efficient temperature control in large areas, potentially reducing energy bills by up to 60%.
  • Smart control via Wi-Fi and remote allows easy temperature management from anywhere.
  • Includes installation kit with copper pipes, wall bracket, and drain pipe for convenience.
  • Turbo mode for rapid temperature adjustment.
  • LED display for real-time performance and temperature monitoring.
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  • 5-in-1 functionality including cooling, heating, fan, air purification, and dehumidification, saving space and costs.
  • Delivers 18,000 BTUs with 850 m3/h airflow for efficient temperature control in large areas, potentially reducing energy bills by up to 60%.
  • Smart control via Wi-Fi and remote allows easy temperature management from anywhere.
  • Includes installation kit with copper pipes, wall bracket, and drain pipe for convenience.
  • Turbo mode for rapid temperature adjustment.
  • LED display for real-time performance and temperature monitoring.
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#4
Belaco
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  • 9000 BTU cooling capacity effectively cools spaces up to 215 square feet, with adjustable power settings of 7000 BTU on low speed and 9000 BTU on high speed.
  • Features four modes: NIGHT MODE for comfort during sleep, COOLING MODE for immediate cooling, DEHUMIDIFYING MODE to reduce humidity, and two-speed FAN MODE for customizable air circulation.
  • Includes an easy-to-install dual window kit compatible with various window types, ensuring a secure and efficient setup.
  • NIGHT MODE adjusts the target temperature gradually and sets the fan to a lower speed, making it ideal for nighttime use without the risk of cold drafts.
  • Utilizes R290 refrigerant, which is eco-friendly and energy-efficient, helping to reduce both environmental impact and operating costs.
  • Equipped with a remote control for convenient operation from a distance and a digital display for a clear view of settings.
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  • 9000 BTU cooling capacity effectively cools spaces up to 215 square feet, with adjustable power settings of 7000 BTU on low speed and 9000 BTU on high speed.
  • Features four modes: NIGHT MODE for comfort during sleep, COOLING MODE for immediate cooling, DEHUMIDIFYING MODE to reduce humidity, and two-speed FAN MODE for customizable air circulation.
  • Includes an easy-to-install dual window kit compatible with various window types, ensuring a secure and efficient setup.
  • NIGHT MODE adjusts the target temperature gradually and sets the fan to a lower speed, making it ideal for nighttime use without the risk of cold drafts.
  • Utilizes R290 refrigerant, which is eco-friendly and energy-efficient, helping to reduce both environmental impact and operating costs.
  • Equipped with a remote control for convenient operation from a distance and a digital display for a clear view of settings.
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#5
KGOGO
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  • 9000 BTU cooling capacity suitable for spaces up to 269 square feet, offering efficient cooling.
  • Four operational modes: cooling, fan, dehumidifier (operates above 15°C or below 85% humidity), and sleep mode for various comfort needs.
  • Ultra-quiet operation under sleep mode with noise levels below 60 dB for minimal disturbance during rest.
  • Portable design with built-in handles and 360° wheels for easy mobility; compatible window kits for simple installation without drilling.
  • User-friendly controls include a 24-hour timer, remote operation, and a washable air filter for easy maintenance.
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  • 9000 BTU cooling capacity suitable for spaces up to 269 square feet, offering efficient cooling.
  • Four operational modes: cooling, fan, dehumidifier (operates above 15°C or below 85% humidity), and sleep mode for various comfort needs.
  • Ultra-quiet operation under sleep mode with noise levels below 60 dB for minimal disturbance during rest.
  • Portable design with built-in handles and 360° wheels for easy mobility; compatible window kits for simple installation without drilling.
  • User-friendly controls include a 24-hour timer, remote operation, and a washable air filter for easy maintenance.
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#6
KOMORE
31% Off
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  • 4-in-1 functionality: Offers cooling, dehumidifying, fan, and sleep modes. Cooling mode ranges from 16°C to 31°C, with a quiet sleep mode at ≤53dB, while dehumidifying removes up to 1 litre of moisture.
  • Intuitive control: Features clear buttons and a remote control (range up to 5m). Compatible with the Tuya Smart app for remote operation over Wi-Fi, including a 24-hour timer and energy-saving temperature adjustments.
  • User-friendly maintenance: Dimensions of 33 x 28 x 70 cm and 21 kg in weight allow for easy mobility with universal wheels. Includes a removable air filter for cleaning and a drain port for regular maintenance.
  • Versatile installation: Comes with a complete window exhaust kit compatible with most window types, including a 1.5m retractable exhaust hose. Easy installation without drilling for various settings like bedrooms, offices, or basements.
  • Eco-conscious design: Equipped with a 9,000 BTU cooling capacity and uses R290 natural refrigerant, making it environmentally friendly. Rated energy efficiency class A for cost-effective summer cooling.
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  • 4-in-1 functionality: Offers cooling, dehumidifying, fan, and sleep modes. Cooling mode ranges from 16°C to 31°C, with a quiet sleep mode at ≤53dB, while dehumidifying removes up to 1 litre of moisture.
  • Intuitive control: Features clear buttons and a remote control (range up to 5m). Compatible with the Tuya Smart app for remote operation over Wi-Fi, including a 24-hour timer and energy-saving temperature adjustments.
  • User-friendly maintenance: Dimensions of 33 x 28 x 70 cm and 21 kg in weight allow for easy mobility with universal wheels. Includes a removable air filter for cleaning and a drain port for regular maintenance.
  • Versatile installation: Comes with a complete window exhaust kit compatible with most window types, including a 1.5m retractable exhaust hose. Easy installation without drilling for various settings like bedrooms, offices, or basements.
  • Eco-conscious design: Equipped with a 9,000 BTU cooling capacity and uses R290 natural refrigerant, making it environmentally friendly. Rated energy efficiency class A for cost-effective summer cooling.
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#7
EUHOMY
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  • 4-in-1 functionality combines cooling, dehumidifying, fan, and sleep modes for year-round use with two adjustable fan speeds.
  • Operates quietly at 52dB and uses eco-friendly R290 refrigerant, optimizing energy efficiency and reducing electricity costs.
  • Equipped with an LED display and remote control for easy temperature adjustment (16-32℃), 24-hour timer programming, and a child lock for safety.
  • Features ergonomic handles and 360° casters for easy mobility; includes a window kit for quick installation in various window types (17"-53").
  • Modern design with ABS frosted plastic, user-friendly control panel, and strong airflow capacity (330m³/h) suitable for spaces up to 20㎡.
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  • 4-in-1 functionality combines cooling, dehumidifying, fan, and sleep modes for year-round use with two adjustable fan speeds.
  • Operates quietly at 52dB and uses eco-friendly R290 refrigerant, optimizing energy efficiency and reducing electricity costs.
  • Equipped with an LED display and remote control for easy temperature adjustment (16-32℃), 24-hour timer programming, and a child lock for safety.
  • Features ergonomic handles and 360° casters for easy mobility; includes a window kit for quick installation in various window types (17"-53").
  • Modern design with ABS frosted plastic, user-friendly control panel, and strong airflow capacity (330m³/h) suitable for spaces up to 20㎡.
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#8
EMtronics
30% Off
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  • Three modes: Air Condition, Dehumidify, Fan. Air Condition cools the room while removing hot air. Fan mode circulates air, and Dehumidify mode removes excess moisture.
  • 12,000 BTU cooling power cools rooms up to 51 sqm, with a temperature range of 16 to 31 degrees for optimal comfort.
  • Includes a remote control and an LED display for easy operation and mode indication.
  • Fabric window vent kit allows hot exhaust air to escape while preventing warm air from entering, enhancing efficiency.
  • Timer and Sleep mode for convenient operation; the unit can turn off automatically and operates quietly while you sleep.
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  • Three modes: Air Condition, Dehumidify, Fan. Air Condition cools the room while removing hot air. Fan mode circulates air, and Dehumidify mode removes excess moisture.
  • 12,000 BTU cooling power cools rooms up to 51 sqm, with a temperature range of 16 to 31 degrees for optimal comfort.
  • Includes a remote control and an LED display for easy operation and mode indication.
  • Fabric window vent kit allows hot exhaust air to escape while preventing warm air from entering, enhancing efficiency.
  • Timer and Sleep mode for convenient operation; the unit can turn off automatically and operates quietly while you sleep.
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#9
Electriq
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  • 18,000 BTU cooling and heating capacity suitable for rooms up to 52 m², featuring a super DC inverter and GMCC compressor for efficient performance.
  • A++ energy efficiency with SEER 6.5 for cooling and SCOP 4.1 for heating, providing up to 60% energy savings compared to non-inverter systems.
  • Compatible with Smart Life/Tuya apps and voice controls like Alexa and Google, offering scheduling and remote temperature sensing with 'I Feel' feature.
  • Pre-gassed and sealed 'Easy-Fit' package includes a 5 m pipe kit, requiring no specialized tools for installation.
  • Smart fan modes ensure quiet operation while maintaining comfort; also features auto-restart and child-lock functions.
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  • 18,000 BTU cooling and heating capacity suitable for rooms up to 52 m², featuring a super DC inverter and GMCC compressor for efficient performance.
  • A++ energy efficiency with SEER 6.5 for cooling and SCOP 4.1 for heating, providing up to 60% energy savings compared to non-inverter systems.
  • Compatible with Smart Life/Tuya apps and voice controls like Alexa and Google, offering scheduling and remote temperature sensing with 'I Feel' feature.
  • Pre-gassed and sealed 'Easy-Fit' package includes a 5 m pipe kit, requiring no specialized tools for installation.
  • Smart fan modes ensure quiet operation while maintaining comfort; also features auto-restart and child-lock functions.
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#10
Olsen & Smith
8% Off
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  • Cooling capacity of 12000 BTU suitable for rooms up to 550 sq ft (50m2) with a temperature range of 16-31℃.
  • Offers three modes: Cooling, Fan, and Dehumidifier, with dehumidification removing up to 1.2L of moisture per hour and vertical air circulation available.
  • Operates quietly at 54 decibels, includes a 24-hour programmable timer for energy efficiency and convenience.
  • Compact design with caster wheels and side handles for easy mobility, includes a washable air filter for maintenance.
  • Comes with adjustable window venting kits for different window types and an easy-to-use remote control.
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  • Cooling capacity of 12000 BTU suitable for rooms up to 550 sq ft (50m2) with a temperature range of 16-31℃.
  • Offers three modes: Cooling, Fan, and Dehumidifier, with dehumidification removing up to 1.2L of moisture per hour and vertical air circulation available.
  • Operates quietly at 54 decibels, includes a 24-hour programmable timer for energy efficiency and convenience.
  • Compact design with caster wheels and side handles for easy mobility, includes a washable air filter for maintenance.
  • Comes with adjustable window venting kits for different window types and an easy-to-use remote control.
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