10 Best Windowless Air Conditioner in UK 2025

Updated on 23/06/2025
#1
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  • 10,000 BTU ASHRAE cooling capacity for effective cooling up to 14 feet.
  • 3-in-1 modes: cooling, dehumidifying, and fan for enhanced comfort.
  • Noise isolation reduces sound to 46dB, ideal for quiet environments.
  • Drain-free system efficiently manages humidity under 85%, minimizing drainage issues.
  • Compatible with voice assistants and a mobile app for convenient control.
  • Universal window kits for easy installation on windows from 17" to 53".
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  • 10,000 BTU ASHRAE cooling capacity for effective cooling up to 14 feet.
  • 3-in-1 modes: cooling, dehumidifying, and fan for enhanced comfort.
  • Noise isolation reduces sound to 46dB, ideal for quiet environments.
  • Drain-free system efficiently manages humidity under 85%, minimizing drainage issues.
  • Compatible with voice assistants and a mobile app for convenient control.
  • Universal window kits for easy installation on windows from 17" to 53".
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#2
Value for Money
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  • Portable air conditioner with a cooling capacity of 9,000 BTU, effective for rooms up to 300 sq.ft.
  • Functions as a fan and dehumidifier, with cooling temperatures as low as 16℃ and two fan speeds to enhance indoor air circulation.
  • LED digital display for real-time temperature monitoring, along with remote control for easy operation, including setting timers and adjusting modes.
  • Compact design with dimensions of 38x38x87cm and weight of 25 kg, featuring casters for mobility and compatibility with sliding windows for simple installation.
  • 24-hour timer for scheduled operation, energy-saving sleep mode, and user-friendly control with reduced noise at night.
  • Includes essential accessories such as exhaust hose, window kit, remote control, and user manual for easy setup and use.
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  • Portable air conditioner with a cooling capacity of 9,000 BTU, effective for rooms up to 300 sq.ft.
  • Functions as a fan and dehumidifier, with cooling temperatures as low as 16℃ and two fan speeds to enhance indoor air circulation.
  • LED digital display for real-time temperature monitoring, along with remote control for easy operation, including setting timers and adjusting modes.
  • Compact design with dimensions of 38x38x87cm and weight of 25 kg, featuring casters for mobility and compatibility with sliding windows for simple installation.
  • 24-hour timer for scheduled operation, energy-saving sleep mode, and user-friendly control with reduced noise at night.
  • Includes essential accessories such as exhaust hose, window kit, remote control, and user manual for easy setup and use.
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#3
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  • 9000BTU efficient cooling capacity for areas up to 370 sq.ft, maintaining comfortable temperatures between 17 to 30 °C.
  • Multi-functional with cooling, dehumidifying, and fan modes; efficiently removes moisture and circulates air with energy-saving sleep settings.
  • Includes easy-install window panel kit and large exhaust hose, compatible with sliding and double-hung windows for smooth operation.
  • User-friendly control panel and remote for adjusting modes, temperatures, and 24-hour timer for energy-efficient cooling.
  • Portable design with wheels and handles for easy movement; removable air filter for straightforward cleaning and maintenance.
  • Customer support available for any concerns, with a response guarantee within 12 hours.
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  • 9000BTU efficient cooling capacity for areas up to 370 sq.ft, maintaining comfortable temperatures between 17 to 30 °C.
  • Multi-functional with cooling, dehumidifying, and fan modes; efficiently removes moisture and circulates air with energy-saving sleep settings.
  • Includes easy-install window panel kit and large exhaust hose, compatible with sliding and double-hung windows for smooth operation.
  • User-friendly control panel and remote for adjusting modes, temperatures, and 24-hour timer for energy-efficient cooling.
  • Portable design with wheels and handles for easy movement; removable air filter for straightforward cleaning and maintenance.
  • Customer support available for any concerns, with a response guarantee within 12 hours.
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#4
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  • Cooling mode effectively lowers room temperature; Fan mode offers strong airflow; Dehumidification mode maintains humidity levels around 50%; Silent mode provides quiet operation.
  • Compact design fits easily into various spaces, including living rooms and kitchens; Night sleep mode ensures low fan speed for quiet cooling while you rest.
  • Versatile 4-in-1 unit functions as an air conditioner, ventilator, dehumidifier, and cooling system, enhancing air circulation and reducing indoor temperature quickly.
  • Simple installation with a dual window kit; suitable for most window types, making it accessible for all users regardless of experience level.
  • LED display shows current room temperature; Remote control functionality adds convenience for adjusting settings from a distance.
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  • Cooling mode effectively lowers room temperature; Fan mode offers strong airflow; Dehumidification mode maintains humidity levels around 50%; Silent mode provides quiet operation.
  • Compact design fits easily into various spaces, including living rooms and kitchens; Night sleep mode ensures low fan speed for quiet cooling while you rest.
  • Versatile 4-in-1 unit functions as an air conditioner, ventilator, dehumidifier, and cooling system, enhancing air circulation and reducing indoor temperature quickly.
  • Simple installation with a dual window kit; suitable for most window types, making it accessible for all users regardless of experience level.
  • LED display shows current room temperature; Remote control functionality adds convenience for adjusting settings from a distance.
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#5
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  • Portable air conditioner with 9000 BTU cooling capacity, efficiently cools spaces up to 300 square feet with an airflow rate of 340 m³/h.
  • Offers four modes: cooling, dehumidification, fan, and sleep, catering to diverse environmental needs. Sleep mode operates quietly, while fan mode allows variable airflow intensity.
  • Features an LED digital display for easy temperature monitoring and a fully functional remote control for convenient settings. Includes a 24-hour timer for customized cooling schedules that enhance energy efficiency.
  • Compact design with 360° wheels and side handles for easy relocation. Comes with detachable, easy-to-clean filters.
  • Installation package includes exhaust hose, connector, window adapter, remote control, and user manual, ensuring compatibility with various window types without needing to drill holes.
  • HUMILABS is a reputable brand recognized for technical expertise and quality assurance, with a responsive after-sales team available for customer support.
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  • Portable air conditioner with 9000 BTU cooling capacity, efficiently cools spaces up to 300 square feet with an airflow rate of 340 m³/h.
  • Offers four modes: cooling, dehumidification, fan, and sleep, catering to diverse environmental needs. Sleep mode operates quietly, while fan mode allows variable airflow intensity.
  • Features an LED digital display for easy temperature monitoring and a fully functional remote control for convenient settings. Includes a 24-hour timer for customized cooling schedules that enhance energy efficiency.
  • Compact design with 360° wheels and side handles for easy relocation. Comes with detachable, easy-to-clean filters.
  • Installation package includes exhaust hose, connector, window adapter, remote control, and user manual, ensuring compatibility with various window types without needing to drill holes.
  • HUMILABS is a reputable brand recognized for technical expertise and quality assurance, with a responsive after-sales team available for customer support.
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#6
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  • Honeycomb waterfall system delivers cold air by cooling warm air over ice water.
  • Offers four modes: fan only, air cooler, natural, and night mode; includes a timer and adjustable fan speeds.
  • Energy-efficient cooling technology provides economical and environmentally friendly air cooling.
  • Equipped with a removable 5.5L water tank and ice packs for enhanced cooling and humidity control.
  • Portable with four rolling wheels for easy movement, featuring a compact design to save space.
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  • Honeycomb waterfall system delivers cold air by cooling warm air over ice water.
  • Offers four modes: fan only, air cooler, natural, and night mode; includes a timer and adjustable fan speeds.
  • Energy-efficient cooling technology provides economical and environmentally friendly air cooling.
  • Equipped with a removable 5.5L water tank and ice packs for enhanced cooling and humidity control.
  • Portable with four rolling wheels for easy movement, featuring a compact design to save space.
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#7
9% Off
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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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#8
38% Off
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  • 9000 BTU cooling capacity provides effective cooling down to 16°C, suitable for medium to large spaces such as homes and offices.
  • Wi-Fi connectivity allows for remote control of the AC unit via smartphone app or voice commands; compatible with Amazon Alexa and Google Home.
  • Offers four functions: air cooling, dehumidifying, fan-only, and sleep modes, controllable through the app, digital display, or remote.
  • Class A Energy Efficiency rating and R290 refrigerant make this unit an environmentally friendly choice that reduces energy costs.
  • Includes two easy-to-install window venting kits for both slide and hinged windows, designed for minimal space intrusion.
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  • 9000 BTU cooling capacity provides effective cooling down to 16°C, suitable for medium to large spaces such as homes and offices.
  • Wi-Fi connectivity allows for remote control of the AC unit via smartphone app or voice commands; compatible with Amazon Alexa and Google Home.
  • Offers four functions: air cooling, dehumidifying, fan-only, and sleep modes, controllable through the app, digital display, or remote.
  • Class A Energy Efficiency rating and R290 refrigerant make this unit an environmentally friendly choice that reduces energy costs.
  • Includes two easy-to-install window venting kits for both slide and hinged windows, designed for minimal space intrusion.
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#9
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  • Equipped with a powerful motor and larger air outlet, this portable air conditioner increases wind speed and air volume by over 40% for enhanced cooling efficiency across various spaces.
  • Featuring a 9.5L water tank, this unit provides over 24 hours of cooling per fill. The top refill design is user-friendly and accommodates individuals with mobility challenges, while adding ice packs can enhance cooling.
  • Energy-efficient and cost-effective, this 60W portable air conditioner eliminates the need for extensive installation or ventilation, making it suitable for various settings. The bladeless design ensures safety for homes with children or pets.
  • The unit offers customizable cooling with 60° automatic and 120° manual oscillation, three speed settings, and a 1-7 hour timer, aimed at reducing dry air symptoms while keeping the room comfortably cool.
  • User-friendly operation with touchscreen and remote control enhances convenience, while an acoustic panel and high-quality silent motor minimize noise for undisturbed sleep.
  • Maintenance is simple with a removable reservoir, cooling pad, and rear grille, and the unit's portable design with handles and wheels allows easy relocation, while the split design offers compact storage.
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  • Equipped with a powerful motor and larger air outlet, this portable air conditioner increases wind speed and air volume by over 40% for enhanced cooling efficiency across various spaces.
  • Featuring a 9.5L water tank, this unit provides over 24 hours of cooling per fill. The top refill design is user-friendly and accommodates individuals with mobility challenges, while adding ice packs can enhance cooling.
  • Energy-efficient and cost-effective, this 60W portable air conditioner eliminates the need for extensive installation or ventilation, making it suitable for various settings. The bladeless design ensures safety for homes with children or pets.
  • The unit offers customizable cooling with 60° automatic and 120° manual oscillation, three speed settings, and a 1-7 hour timer, aimed at reducing dry air symptoms while keeping the room comfortably cool.
  • User-friendly operation with touchscreen and remote control enhances convenience, while an acoustic panel and high-quality silent motor minimize noise for undisturbed sleep.
  • Maintenance is simple with a removable reservoir, cooling pad, and rear grille, and the unit's portable design with handles and wheels allows easy relocation, while the split design offers compact storage.
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#10
16% Off
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  • 9000 BTU cooling capacity effectively cools rooms up to 300 sq. ft. down to 16°C.
  • Four functions in one unit: COOL, DRY, FAN, and ventilation to maintain comfort and reduce humidity.
  • Portable design with hidden handles and wheels for easy movement and installation in various room types.
  • Equipped with a removable, washable double-layer filter to enhance air quality by trapping dust and allergens.
  • User-friendly LED display and remote control for quick adjustments to settings, with a 2-year warranty for support.
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  • 9000 BTU cooling capacity effectively cools rooms up to 300 sq. ft. down to 16°C.
  • Four functions in one unit: COOL, DRY, FAN, and ventilation to maintain comfort and reduce humidity.
  • Portable design with hidden handles and wheels for easy movement and installation in various room types.
  • Equipped with a removable, washable double-layer filter to enhance air quality by trapping dust and allergens.
  • User-friendly LED display and remote control for quick adjustments to settings, with a 2-year warranty for support.
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