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Energy Efficient Air Conditioners

Choose from a selection of portable & wall mounted energy efficient air conditioners

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52 products

Best buy banner
  • 10k BTU: Ideal for home use like living rooms and bedrooms
  • 3-in-1: Air con, fan and dehumidifier mode
  • Cheap to run: A rated energy efficiency
  • 24-hour timer to save on energy and pre-cool rooms
  • For rooms up to 28sqm
Energy Label
SAVE 36%
SAVE £160
£279.97
Refurbished from £249.97£ » View product
Best buy banner
  • 7k BTU: Ideal for home use like living rooms and bedrooms
  • 3-in-1: Air con, fan and dehumidifier mode
  • Cheap to run: A rated energy efficiency
  • 24-hour timer to save on energy and pre-cool rooms
  • For rooms up to 20sqm
Energy Label
SAVE 32%
SAVE £120
£369.97
£249.97
Refurbished from £209.98£ » View product
  • 12k BTU: For medium to large spaces like homes and offices
  • 4-in-1: Air con, heater, fan and dehumidifier mode
  • Heating function for year-round use
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 30sqm
Energy Label
SAVE 31%
SAVE £183
£582.97
£399.97
Refurbished from £369.97£ » View product
Best buy banner
  • Super DC Inverter A++/A+ efficiency
  • Control & schedule from anywhere with your smartphone
  • Year-round use - cool, heat, & clean air with ease
  • Easy-Fit: Pre-gassed with 4.5m pipe and cable kit
  • For rooms up to 26sqm
Energy Label
SAVE 9%
SAVE £60
£599.98
View product
Best buy banner
  • 12k BTU: For medium to large spaces like homes and offices
  • 3-in-1: Air con, fan and dehumidifier mode
  • Cheap to run: A rated energy efficiency
  • 24-hour timer to save on energy and pre-cool rooms
  • For rooms up to 30sqm
Energy Label
SAVE 30%
SAVE £150
£349.98
Refurbished from £329.98£ » View product
  • 12k BTU: For medium to large spaces like homes and offices
  • 3-in-1: Air con, fan and dehumidifier mode
  • A+ rated - Cheap to run and energy-efficient
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 30sqm
Energy Label
SAVE 42%
SAVE £293
£691.97
£399.00
View product
Best buy banner
  • 9000 BTU - Ideal for living rooms and bedrooms
  • 3-in-1: Air con, fan and dehumidifier modes
  • Cheap to run: A rated energy efficiency
  • 24-hour timer to save on energy and pre-cool rooms
  • For rooms up to 21sqm
Energy Label
SAVE 25%
SAVE £100
£299.97
Refurbished from £279.00£ » View product
  • 8k BTU: For medium-sized spaces like bedrooms and living rooms
  • 3-in-1: Air con, fan and dehumidifier mode
  • Quietest in its class, perfect for bedrooms and offices
  • Energy efficient smart cool mode auto adjusts temperature
  • For rooms up to 20sqm
Energy Label
SAVE 40%
SAVE £200
£499.98
£299.98
Refurbished from £269.98£ » View product
  • 10k BTU: For medium to large spaces like homes and offices
  • 4-in-1: Air con, heater, fan and dehumidifier modes
  • Heat pump: heats in winter for all-year-round use
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 28sqm
Energy Label
SAVE 41%
SAVE £258
£626.97
£369.00
Refurbished from £339.00£ » View product
  • 14k BTU: For medium to large spaces like homes and offices
  • 4-in-1: Air con, heater, fan and dehumidifier mode
  • 3.8kW of powerful heating - Use all year round
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 38sqm
Energy Label
SAVE 28%
SAVE £177
£626.97
£449.97
View product
IQool Plus 9000 BTU Smart A+++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included
  • 3-in-1: Cooling, heating and dehumidifying
  • Powerful and quiet - ideal for home and office use
  • Manage temperature & schedule from your smartphone
  • A+++ ultra energy efficient Air Conditioner
  • For rooms up to 26sqm
Energy Label
SAVE 17%
SAVE £100
£499.98
View product
  • 11.5k BTU: Great for large bedrooms and living spaces
  • 3-in-1: Air con, fan and dehumidifier modes
  • Silent technology - So you're not disturbed at night
  • Real Feel Technology auto-adjusts temperature & humidity for optimal comfort
  • For rooms up to 30sqm
Energy Label
SAVE 27%
SAVE £241
£639.00
View product
  • 9000 BTU - Ideal for small to medium sized rooms
  • 3-in-1 design with air con, fan & dehumidifier functions
  • Digital control panel and remote for easy use
  • A rated energy efficiency with sustainable R290 gas
  • For rooms up to 21sqm
Energy Label
SAVE 12%
SAVE £70
£499.97
Refurbished from £459.98£ » View product
  • 12k BTU: For medium to large spaces like homes and offices
  • 3-in-1: Air con, fan and dehumidifier modes
  • Auto-swing function for maximum cooling
  • Low power consumption saves you money on your bills
  • For rooms up to 30sqm
Energy Label
SAVE 20%
SAVE £145
£569.98
Refurbished from £549.98£ » View product
IQool Plus 12000 BTU Smart A+++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included
  • 3-in-1: Cooling, heating and dehumidifying
  • Powerful and quiet - ideal for home and office use
  • Manage temperature & schedule from your smartphone
  • A+++ ultra energy efficient Air Conditioner
  • For rooms up to 30sqm
Energy Label
SAVE 20%
SAVE £145
£569.98
View product
electriQ iQool 24000 BTU WiFi Smart A++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included
Best buy banner
  • 3-in-1: Cooling, heating and dehumidifying
  • Powerful and quiet - for home, office & commercial use
  • Control the temperature and schedule from your smartphone
  • A++ ultra energy efficient Air Conditioner
  • For rooms up to 60sqm
Energy Label
SAVE 9%
SAVE £80
£799.98
Refurbished from £719.98£ » View product
  • 3-in-1 Cooling, Fan and Dehumidifying functions
  • Save further energy and money with the 24 hour timer
  • Silent technology - So you're not disturbed at night
  • 3 fan speeds to adjust the power to a comfortable level
  • For rooms up to 27sqm
Energy Label
SAVE 24%
SAVE £161
£659.97
£499.00
Refurbished from £449.98£ » 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
£599.98
£499.98
View product
  • 13,000 BTU is perfect for cooling rooms up to 35 sqm
  • 3-in-1: Air con, fan and dehumidifier mode
  • 3 fan speeds allow you to adjust the power to a desirable level
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 35sqm
Energy Label
SAVE 27%
SAVE £301
£1099.97
£799.00
View product
  • 9000 BTU is perfect for bedrooms and living rooms
  • 3-in-1 Cooling, Fan and Dehumidifying functions
  • A Class Energy rating means you can stay cool without spending a lot of money
  • Save further energy and money with the 24 hour timer
  • For rooms up to 25sqm
Energy Label
SAVE 28%
SAVE £171
£429.00
Refurbished from £409.00£ » View product
electriQ Iqool Multi-Split 2 x 9000 BTU Smart Wall Mounted Heat Pump Air Conditioner Bundle - Two Indoor Units Single Outdoor Unit and Pipe Kits Included
  • Multi-split controls the climate of 2 rooms with 1 outdoor unit
  • Great for homes or offices
  • A++/A+ ultra efficient DC inverter
  • For rooms up to 52sqm
  • Timer: Programmable
Energy Label
£1199.98
View product
electriQ iQool 18000 BTU WiFi Smart A++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included
White
Black
Best buy banner
  • 3-in-1: Cooling, heating and dehumidifying
  • Powerful and quiet - ideal for home and office use
  • A++ ultra energy efficient Air Conditioner
  • For rooms up to 52sqm
  • Timer: Programmable
Energy Label
SAVE 5%
SAVE £40
£729.98
View product
electriQ Iqool Multi-Split 2 x 12000 BTU Smart Wall Mounted Heat Pump Air Conditioner Bundle - Two Indoor Units Single Outdoor Unit and Pipe Kits Included
White
Black
  • Multi-split controls the climate of 2 rooms - 1 outdoor unit
  • Great for homes or offices
  • A++/A+ super efficient DC inverter
  • For rooms up to 47sqm
  • Timer: Programmable
Energy Label
SAVE 9%
SAVE £130
£1299.98
View product
  • 3-in-1 Cooling, Fan and Dehumidifying functions
  • A+ energy efficiency saves you money
  • 3 fan speeds for optimal cooling
  • Control temperature and schedule from anywhere with your phone
  • For rooms up to 29sqm
Energy Label
SAVE 26%
SAVE £249
£967.97
£719.00
View product
  • Cooling, Fan and Dehumidifying functions
  • A+ energy efficiency saves you money
  • 3 fan speeds for optimal cooling
  • Highly Portable and easy to use
  • For rooms up to 55sqm
Energy Label
SAVE 24%
SAVE £211
£669.00
Refurbished from £639.00£ » View product
electriQ Iqool Multi-Split 2 x 12000 BTU Smart Wall Mounted Heat Pump Air Conditioner Bundle - Two Indoor Units Single Outdoor Unit and Pipe Kits Included - Black
  • A++/A+ ultra efficient DC inverter
  • 2 x 12k BTU units with only 1x outdoor unit
  • Multi-split controls the climate of 2 rooms
  • Great for homes or offices
  • For rooms up to 47sqm
Energy Label
SAVE 9%
SAVE £120
£1199.98
View product
electriQ iQool 24000 BTU WiFi Smart A++ Wall Split Air Conditioner with Heat Pump and 5-Meter Pipe Kit Included - Black
Black
White
  • A++ ultra energy efficient Air Conditioner
  • Perfect for home, office and commercial use
  • EasyFit: Pre-gassed with 5m pipe and cable kit
  • Really powerful but quiet in operation
  • For rooms up to 60sqm
Energy Label
SAVE 9%
SAVE £80
£799.97
View product
  • A++ ultra energy efficient Air Conditioner
  • 3-in-1: Cooling, heating and dehumidifying
  • For rooms up to 104sqm
  • Timer: Programmable
  • Warranty: 2 year warranty
Energy Label
SAVE 9%
SAVE £150
£1649.97
£1499.98
View product
  • 14k BTU: For medium to large spaces like homes and offices
  • 4-in-1: Air con, heater, fan and dehumidifier mode
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • 24-hour timer to save on energy and pre-cool rooms
  • For rooms up to 38sqm
Energy Label
SAVE 20%
SAVE £121
£599.98
£479.00
Refurbished from £449.00£ » View product
  • Efficient, faster, durable, quieter with DUAL Inverter Compressor™ technology
  • LG Active Energy Control function - adjust the energy consumption with three options (80%, 60%, 40%)
  • R32 – Highly efficient ecological refrigerant
  • A++/A+ Rating Rated efficiency - Stay cool without spending a lot of money
  • For rooms up to 125sqm
Energy Label
SAVE 9%
SAVE £98
£1076.97
£979.00
View product
£959.97
View product
SAVE 9%
SAVE £130
£1429.97
£1299.97
View product
SAVE 9%
SAVE £180
£1979.97
£1799.97
View product
Best buy banner
  • 3-in-1: Cooling, heating and dehumidifying
  • Powerful and quiet - ideal for home and office use
  • A++ ultra energy efficient Air Conditioner
  • Manage temperature & schedule from your smartphone
  • For rooms up to 50sqm
SAVE 5%
SAVE £40
£769.97
£729.98
View product
  • High quality 7.4kW portable water cooled split unit ideal for server rooms
  • Plate heat exchanger removes de-rating effect and keeps the sound down
  • Backward curved impellers push air further and through smaller diameter ducting
  • Digitally controlled thermostat, twin directional louvres, variable speed and lockable castors for easy movement
  • For rooms up to 49sqm
Energy Label
SAVE 15%
SAVE £656
£4302.10
£3645.95
View product
Best buy banner
  • A++/A+ ultra energy efficient DC Split Inverter
  • Control & schedule from anywhere from your phone
  • 3-in-1: Cooling, heating and dehumidifying
  • Easy-Fit: Pre-gassed with 4.5m pipe and cable kit
  • For rooms up to 30sqm
Energy Label
SAVE 8%
SAVE £57
£679.98
View product
Best buy banner
  • Ideal for medium sized rooms
  • Great for homes, offices and conservatories
  • No outdoor unit, only 2 air vents visible from outside
  • Cools, fans and heats - ideal for all year round use
  • For rooms up to 30sqm
Energy Label
SAVE 6%
SAVE £47
£799.98
View product
Best buy banner
  • Ideal for medium sized areas
  • Great for homes, offices and conservatories
  • No outdoor unit, only 2 air vents visible from outside
  • Cools, fans and heats - ideal for all year round use
  • For rooms up to 35sqm
Energy Label
SAVE 14%
SAVE £140
£849.98
Refurbished from £819.98£ » View product
  • 12k BTU: For medium to large spaces like homes and offices
  • 4-in-1: Air Conditioner with heater, fan and dehumidifier mode
  • Cheap to run: A/A+ rated energy efficiency
  • WiFi enabled - Monitor & control from your smartphone or assistant
  • For rooms up to 30sqm
Energy Label
£429.97
Refurbished from £409.97£ » View product
electriQ Iqool Multi-Split 3 x 9000 BTU Smart Wall Mounted Heat Pump Air Conditioner Bundle - Three Indoor Units Single Outdoor Unit and Pipe Kits Included
White
Black
  • Multi-split controls the climate of 2 rooms - 1 outdoor unit
  • Great for homes or offices up to 56sqm
  • Super efficient DC inverter A++/A+
  • For rooms up to 56sqm
  • Timer: Programmable
Energy Label
SAVE 7%
SAVE £100
£1399.98
View product
Grade A2

  • 3 in 1 unit with Cooling, Fan, Dehumidifier function
  • 12,000 BTU air conditioner - great for rooms up to 30 sqm
  • Multi protective functions to prevent damage and protect the service life of the machine
  • For rooms up to 30sqm
  • Timer: 24 hours
Energy Label
£699.98
View product
electriQ Iqool Multi-Split 3 x 9000 BTU Smart Wall Mounted Heat Pump Air Conditioner Bundle - Three Indoor Units Single Outdoor Unit and Pipe Kits Included - Black
Black
White
  • Multi-split controls the climate of 2 rooms - 1 outdoor unit
  • Great for homes or offices up to 56sqm
  • A++/A+ super efficient DC inverter
  • For rooms up to 56sqm
  • Timer: Programmable
Energy Label
SAVE 7%
SAVE £100
£1399.98
View product
  • Cooling and dehumidifying
  • 9,200 BTU air conditioner - great for rooms up to 26 sqm
  • Durable metal casing, handle and lockable castors
  • For rooms up to 26sqm
  • Warranty: 1 year warranty
Energy Label
SAVE 22%
SAVE £134
£603.97
£469.98
Refurbished from £399.48£ » View product
Grade A1

  • 12000 BTU rating delivers impressive cooling for medium/large sized room
  • 3-in-1: Cools, fans and dehumidifies
  • Low power consumption for cost effective cooling
  • Simple digital controls with LED Display
  • For rooms up to 30sqm
£549.98
Other grades and new from £569.98£ » View product
Grade A1

  • 10,000 BTU Portable Air Conditioner
  • 3-in-1 Cooling, Dehumidifier, Fan mode
  • Castors for enhanced portability
  • 2 speed fan-balancing quiet operation with performance
  • For rooms up to 28sqm
SAVE 5%
SAVE £20
£369.97
£349.97
Other grades from £299.97£ » View product
Grade A2

  • 9,000 BTU - Ideal for cooling small/medium sized rooms
  • 4 in 1 design cools, fans, heats and dehumidifies, making it great for all year round use
  • It's ready to use straight out of the box and requires no permanent installation
  • Set the air conditioner to switch on/off after a set amount of time to suit your schedule
  • For rooms up to 21sqm
SAVE 7%
SAVE £30
£449.00
£419.00
View product
Grade A2

  • 8k BTU: For medium-sized spaces like bedrooms and living rooms
  • 3-in-1: Air con, fan and dehumidifier mode
  • Quietest in its class, perfect for bedrooms and offices
  • Energy efficient smart cool mode auto adjusts temperature
  • For rooms up to 20sqm
Energy Label
SAVE 36%
SAVE £150
£419.98
£269.98
View product
Grade A2

  • Enough power to cool or heat rooms up to 30 sqm
  • 4-in-1 Functions: Cooling, Heating, Ventilation, Dehumidification
  • Integrated Wifi for long distance control of functionalities
  • 3-speed fan + AUTO
  • For rooms up to 30sqm
£419.98
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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