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Environment
May 31, 2026
Analyzed by Llama- 4 Scout 17B 16E Instruct

Should I Get Air Conditioning in the UK and Can It Be Green?

AI Summary
As the UK experiences more frequent heatwaves, many homeowners are considering installing air conditioning. However, concerns about the environmental impact of these devices are growing. With an estimated 4 million homes now having an air conditioner, the question remains whether air conditioning can be a green option.

The Need for Air Conditioning in the UK

British homeowners are rapidly acquiring air conditioners as the climate crisis superheats our summers. An estimated 4m homes have an air conditioner, double the figure from three years ago.

Can Air Conditioning Be Green?

Because air-conditioning units use more energy than other cooling devices, this results in more carbon emissions. Using a portable unit for an average of eight hours a day during the summer would result in about 4.87kg of CO2 emissions, roughly equivalent to driving 18 miles.

Options for Greener Air Conditioning

One approach could be running it only when there is a high level of renewable energy on the grid – for example during the sunniest part of the day. You may choose to pre-cool rooms before the evening peak in electricity demand. Or you could power the air conditioner with a home battery that charges up during renewable energy surpluses, helping you make the most of renewables without owning them yourself.

Types of Air Conditioning

It’s important to note that not all air conditioners are alike. Portable versions were relatively inefficient. If you invest in built-in air conditioning, make sure you get the right size unit for the room you’ll be cooling. A wall-mounted unit powerful enough (12,000 BTU) to cool the average British bedroom costs about £750, plus £1,150 for installation.

Alternative Cooling Methods

Air conditioners work using the same principle as heat pumps – they move heat from one place to another with the help of a refrigerant fluid. But the devices generally referred to as “air-to-air heat pumps” are reversible and can provide heating as well as cooling. Homeowners who switched from oil or gas heating to an electric-powered air-to-air heat pump, and used it for winter heating and summer cooling, were decarbonising their homes.