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Box Room Air Conditioners

Shop air conditioning units for box rooms

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41 products

  • 7000 BTU - Ideal for living rooms & bedrooms
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated cooling that costs just 17p/hour
  • 24hr timer - Pre-cool rooms & turn on/off to suit your routine
  • For areas up to 21sqm
Energy Label
SAVE 46%
SAVE £170
£199.97
Refurbished from £164.98£ » View product
Smart
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • 12000 BTU - For medium to large spaces in homes & offices
  • 6 Modes: Cool | SmartCool | Heat | Fan | Dehumidify | Sleep
  • Powerful cooling for 30p/hour. Heating for year-round use
  • Smart - Monitor & schedule from your smartphone or assistant
  • For areas up to 30sqm
Energy Label
SAVE 31%
SAVE £183
£399.97
View product
Smart
Heating & Cooling Low energy cooling
  • 12000 BTU - For medium to large spaces in homes & offices
  • 5 Modes: Cool | SmartCool | Fan | Dehumidify | Sleep
  • Low Energy - 26p/hour - 10% less than units with similar power
  • Smart - Monitor & control from your smartphone or assistant
  • For areas up to 30sqm
Energy Label
SAVE 42%
SAVE £293
£399.00
View product
  • 10000 BTU - Ideal for living rooms & bedrooms
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated cooling that costs just 25p/hour
  • 24hr timer - Pre-cool rooms & turn on/off to suit your routine
  • For areas up to 28sqm
Energy Label
SAVE 36%
SAVE £160
£279.97
Refurbished from £239.98£ » View product
  • 8000 BTU - Quietest in its class - Perfect for bedrooms
  • 5 Modes: Cool | SmartCool | Fan | Dehumidify | Sleep
  • A-Rated efficiency Cooling that costs just 20p/hour
  • Smart Cool - Quickly cools then quietly holds the perfect temperature
  • For areas up to 20sqm
Energy Label
SAVE 40%
SAVE £200
£299.98
Refurbished from £255.98£ » View product
  • 9000 BTU - Compact design is Ideal for living rooms & bedrooms
  • 3 Modes: Cool | Fan | Dehumidify
  • 24hr timer - Schedule on/off with your routine & save energy
  • A-Rated cooling that costs just 17p/hour
  • For areas up to 21sqm
Energy Label
SAVE 25%
SAVE £100
£299.97
View product
  • 12000 BTU: For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated cooling that costs just 29p/hour
  • 24hr timer - Pre-cool rooms & schedule to suit your routine
  • For areas up to 30sqm
Energy Label
SAVE 34%
SAVE £170
£329.97
Refurbished from £289.97£ » View product
IQool Plus 9000 BTU Smart A+++ Wall Split Air Conditioner with Heat Pump - 5-Metre Pipe Kit Included
Smart
  • Powerful and quiet - Ideal for home and office use
  • 3 in 1: Cool | Heat | Dehumidify
  • Smart - Control & schedule from your smartphone or assistant
  • Ultra energy efficient - A+++ Rated cooling
  • For areas up to 26sqm
Energy Label
SAVE 22%
SAVE £130
£469.98
View product
Smart
  • Ideal for large rooms in homes & offices
  • 4 in 1: Cool | Heat | Fan | Dehumidify
  • No Outdoor Unit - Only 2 air vents on your exterior wall
  • Ideal for conservatories & flats where outdoor units cannot be installed
  • For areas up to 35sqm
Energy Label
SAVE 14%
SAVE £140
£849.98
Refurbished from £719.98£ » View product
Smart
  • Easy-Fit: Pre-gassed (HFC-free) with 4.5m pipe & cable kit included
  • 3 in 1: Cool | Heat | Dehumidify
  • Smart - Control & schedule from your smartphone or assistant
  • A++/A+ Rated - Efficient cooling & heating for year-round use
  • For areas up to 30sqm
Energy Label
SAVE 8%
SAVE £57
£679.98
View product
Smart
  • Ideal for medium-sized rooms in homes & offices
  • 4 in 1: Cool | Heat | Fan | Dehumidify
  • No Outdoor Unit - Only 2 air vents on your exterior wall
  • Ideal for conservatories & flats where outdoor units cannot be installed
  • For areas up to 30sqm
Energy Label
SAVE 6%
SAVE £47
£799.98
View product
  • 12000 BTU - For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • Auto-swing function for maximum cooling
  • A-Rated efficiency - Cools rooms for just 29p/hour
  • For areas up to 30sqm
Energy Label
SAVE 26%
SAVE £186
£529.00
Refurbished from £459.97£ » View product
  • 9000 BTU - Ideal for small to medium sized rooms
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • Sleek & stylish design to suit any space
  • A-Rated efficiency - Cool rooms for just 22p/hour
  • For areas up to 21sqm
Energy Label
SAVE 21%
SAVE £121
£449.00
Refurbished from £405.98£ » View product
IQool Plus 12000 BTU Smart A+++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included
Smart
  • Powerful and quiet - Ideal for home and office use
  • 3 in 1: Cool | Heat | Dehumidify
  • Smart - Control & schedule from your smartphone or assistant
  • Ultra energy efficient - A+++ Rated cooling
  • For areas up to 30sqm
Energy Label
SAVE 23%
SAVE £165
£549.98
View product
Smart
  • Efficient, faster, durable and quieter with DUAL Inverter Compressor™ technology
  • Fast and powerful cooling & heating - Controlled from anywhere with the LG app
  • The Gold Fin™ technology better protects surfaces against corrosion and extends the life of the heat exchanger
  • Cools, heats and purifies the air – Great for all year round use
  • For areas up to 35sqm
Energy Label
SAVE 8%
SAVE £50
£549.98
View product
  • DUAL Inverter Compressor technology
  • Fast and powerful cooling & heating
  • Pleasant temperature and quiet operation
  • Active Energy Control function
  • Highly efficient ecological refrigerant R32
Energy Label
SAVE 17%
SAVE £100
£499.98
View product
  • 12000 BTU - For offices and warehouses
  • 3 Modes: Cool | Fan | Dehumidify
  • Protective functions extend service life incl. overflow & frost protection
  • 24hr Timer - Pre-cool spaces & switch off automatically
  • For areas up to 30sqm
Energy Label
SAVE 6%
SAVE £44
£669.98
View product
Smart
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • 12000 BTU - For medium to large spaces in homes & offices
  • 5 Modes: Cool | Heat | Fan | Dehumidify | Sleep
  • A-Rated efficiency - Cool rooms for just 25p/hour.
  • Smart - Monitor & control from your smartphone or assistant
  • For areas up to 30sqm
Energy Label
SAVE 11%
SAVE £50
£399.98
Refurbished from £359.98£ » View product
Heating & Cooling Low energy cooling
  • 10000 BTU - Ideal for living rooms & bedrooms
  • 5 Modes: Cool | Fan | Dehumidify | Eco Real Feel | Silent
  • Efficiency Class A++ - Cooling for just 16p/hour
  • Silent Technology - Perfect for night-time
  • For areas up to 28sqm
Energy Label
SAVE 27%
SAVE £241
£639.00
Refurbished from £545.98£ » View product
Smart
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • Elegant design with high quality finish - For rooms up to 30 sqm
  • 5 Modes: Cool | Heat | Fan | Dehumidify | Sleep
  • Smart - Control from your phone. Smart scheduling saves energy
  • 24hr Timer - Pre-cool rooms and schedule. Scheduling saves energy.
  • Swing function: Automatic oscillation or fixed position
Energy Label
SAVE 49%
SAVE £294
£593.97
£299.97
View product
Smart
Heating & Cooling Low energy cooling
  • 11000 BTU - Great for large bedrooms & living spaces
  • 5 Modes: Cool | Fan | Dehumidify | Eco Real Feel | Silent
  • A+ efficiency - Powerful cooling for just 21p/hour
  • Smart - Monitor & schedule from your smartphone or assistant
  • For areas up to 29sqm
Energy Label
SAVE 28%
SAVE £269
£699.00
View product
  • 8000 BTU - Ideal for medium-sized living rooms & bedrooms
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated Efficiency Costs just 17p/hour
  • 24hr timer - Pre-cool rooms & schedule to save energy
  • For areas up to 20sqm
Energy Label
SAVE 53%
SAVE £253
£472.97
£219.97
View product
Heating & Cooling Low energy cooling
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • 10000 BTU - Ideal for living rooms & bedrooms
  • 5 Modes: Cool | Heat | Fan | Dehumidify | Silent
  • Highly portable & easy to use
  • Low energy A+ cooling for just 18p/hour
  • 3 fan speeds for optimal cooling
Energy Label
SAVE 24%
SAVE £211
£669.00
Refurbished from £569.98£ » View product
Smart
  • 11000 BTU - Great for large bedrooms & living spaces
  • 5 Modes: Cool | Fan | Dehumidify | Eco Real Feel | Silent
  • Smart - Schedule from your smartphone or assistant
  • A-Rated - Powerful cooling for just 25p/hour
  • For areas up to 36sqm
Energy Label
SAVE 14%
SAVE £108
£689.00
Refurbished from £585.98£ » View product
  • 10000 BTU - For medium to large spaces in homes & offices
  • 3-in-1: Air con, fan & dehumidifier mode
  • 2 speed turbo fan with touch controls for optimal cooling
  • Cheap to run: A rated energy efficiency
  • 24-hour timer to save on energy and pre-cool rooms
Energy Label
SAVE 34%
SAVE £171
£499.97
£329.00
View product
Smart
  • Easy-Fit: Pre-gassed (HFC-free) with 4.5m pipe & cable kit included
  • 3 in 1: Cool | Heat | Dehumidify
  • Smart - Control & schedule from your smartphone or assistant
  • A++/A+ Rated - Efficient cooling & heating for year-round use
  • For areas up to 26sqm
Energy Label
£649.98
View product
Grade A1

10% OFF - Use code COOLME10
  • 12000 BTU: For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated cooling that costs just 29p/hour
  • 24hr timer - Pre-cool rooms & schedule to suit your routine
  • For areas up to 30sqm
Energy Label
SAVE 12%
SAVE £40
£329.97
£289.97
Other grades and new from £329.97£ » View product
Grade A1

10% OFF - Use code COOLME10
  • 12000 BTU - For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • Auto-swing function for maximum cooling
  • A-Rated efficiency - Cools rooms for just 29p/hour
  • For areas up to 30sqm
Energy Label
SAVE 13%
SAVE £69
£529.00
£459.97
Other grades and new from £529.00£ » View product
Grade A2

20% OFF - Use code COOLME20
Smart
  • 10500 BTU - For medium to large spaces in homes and offices
  • 6 Modes: Cool | SmartCool | Heat | Fan | Dehumidify | Sleep
  • Heating function for year-round use
  • Smart - Monitor & control from your smartphone or home assistant
  • For areas up to 28sqm
Energy Label
SAVE 21%
SAVE £85
£399.00
£314.21
View product
Grade A2

20% OFF - Use code COOLME20
Heating & Cooling Low energy cooling
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • 9000 BTU: Ideal for small to medium-sized rooms
  • 4 Modes: Cool | Heat | Fan | Dehumidify
  • Ready to use straight out of the box with no permanent installation
  • 24hr Timer - Pre-cool spaces & switch off automatically
  • For areas up to 21sqm
Energy Label
SAVE 14%
SAVE £61
£449.00
£388.36
View product
Grade A1

10% OFF - Use code COOLME10
  • 8,000 BTU - Great for bedrooms
  • 3-in-1 Cooling, Dehumidifier, Fan mode
  • 2 speed fan-balancing quiet operation with performance
  • Castors for portability
  • For areas up to 20sqm
Energy Label
SAVE 43%
SAVE £150
£349.97
£199.97
View product
Grade A2

20% OFF - Use code COOLME20
  • 9000 BTU - Compact design is Ideal for living rooms & bedrooms
  • 3 Modes: Cool | Fan | Dehumidify
  • 24hr timer - Schedule on/off with your routine & save energy
  • A-Rated cooling that costs just 17p/hour
  • For areas up to 21sqm
SAVE 5%
SAVE £14
£269.98
£255.98
View product
Grade A1

10% OFF - Use code COOLME10
Heating & Cooling Low energy cooling
  • 11000 BTU - For cooling rooms up to 29 sqm
  • 3-in-1 Cooling, Fan and Dehumidifying functions
  • A+ energy efficiency - Stay cool without spending a lot of money
  • Quiet function - Perfect for night-time
  • For areas up to 28sqm
Energy Label
SAVE 10%
SAVE £70
£699.00
£629.34
Other grades from £332.38£ » View product
Grade A2

20% OFF - Use code COOLME20
  • 12000 BTU: For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • A-Rated efficient cooling
  • 24hr timer - Pre-cool rooms & schedule to suit your routine
  • For areas up to 30sqm
Energy Label
SAVE 5%
SAVE £16
£295.98
£279.97
View product
Grade A2

20% OFF - Use code COOLME20
  • 8000 BTU - Quietest in its class - Perfect for bedrooms
  • 5 Modes: Cool | SmartCool | Fan | Dehumidify | Sleep
  • A-Rated efficient cooling
  • Energy efficient smart cool mode auto adjusts temperature
  • For areas up to 20sqm
Energy Label
SAVE 15%
SAVE £64
£419.98
£355.98
View product
Grade A2

20% OFF - Use code COOLME20
Smart
Heating & Cooling This portable air conditioner has a heating function for the colder months.
  • 10,000 BTU - Great for rooms up to 28 sqm
  • 4-in-1 Cooling, Heating, Dehumidifier, Fan mode
  • Smart Wi-Fi app control
  • Castors for enhanced portability
  • 2 speed fan-balancing quiet operation with performance
Energy Label
£322.43
£306.31
View product
Grade A2

Smart
  • 12000 BTU - Ideal for cooling large spaces
  • A++/A+ Rating Rated efficiency
  • Cools, heats and cleans the air - Great for all year round use
  • Self-cleaning with Titanium Gold technology which also cleans the air,
  • For areas up to 30sqm
Energy Label
£649.98
Other grades from £449.98£ » View product
Grade A2

20% OFF - Use code COOLME20
Heating & Cooling Low energy cooling
  • Cooling, Fan and Dehumidifying functions
  • Energy efficiency class: A+
  • 3 fan speeds for optimal cooling
  • Highly Portable and easy to use
  • For areas up to 25sqm
Energy Label
SAVE 9%
SAVE £57
£626.97
£569.98
View product
Grade A2

20% OFF - Use code COOLME20
  • 8,000 BTU - Great for rooms up to 20 sqm
  • 3-in-1 Cooling, Dehumidifier, Fan mode
  • Castors for enhanced portability
  • 2 speed fan-balancing quiet operation with performance
  • 24h timer for pre-cooling rooms
Energy Label
£189.28
View product
Grade A2

20% OFF - Use code COOLME20
  • 9,000 BTU unit is ideal for cooling medium sized rooms
  • Cooling, Fan and Dehumidifier
  • Low power consumption - A Energy Rating
  • Digital control panel and remote for easy use
  • For areas up to 21sqm
Energy Label
SAVE 15%
SAVE £85
£579.00
£494.10
View product
Grade A3

  • 12000 BTU - For medium to large spaces in homes & offices
  • 4 Modes: Cool | Fan | Dehumidify | Sleep
  • Auto-swing function for maximum cooling
  • A-Rated efficiency - Cools rooms for just 29p/hour
  • For areas up to 30sqm
Energy Label
SAVE 5%
SAVE £24
£474.05
£449.98
View product

Air Conditioner Calculator

Use our handy calculator, which will help you figure out exactly what size of unit you require for your office or home.

What are the room dimensions?

How many people and heat sources are in the room?

What is a BTU?

A BTU (British Thermal Unit) is a rating used to determine the heating or cooling capacity of your Air Conditioner.

Typically a minimum of 7000 BTU is needed to cool a small room, whereas commercial units can reach up to 25,000 BTU and beyond. Simply, the greater the BTU, the larger the space that the unit can cool.

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