Science & technology | All that gas

Propane-powered heat pumps are greener

And easier to install in leaky old buildings

A block of flats with multiple heat pumps. The fans of the heat pumps are incorporated as flowers.
Image: Mike Haddad

ELECTRICITY CAN be made from the sun, the wind or the atom rather than by burning fossil fuels. Cars, buses and perhaps even lorries can be powered by batteries rather than petrol or diesel. But other parts of the economy are trickier to decarbonise. One such awkward chunk is the heating, in homes and business, of air and water. In the EU, where much of this is done by burning oil or natural gas, commercial and residential heating accounts for about 12% of the bloc’s greenhouse-gas emissions (see chart).

This article appeared in the Science & technology section of the print edition under the headline “Pumping up the heat pump”

From the September 9th 2023 edition

Discover stories from this section and more in the list of contents

Explore the edition

More from Science & technology

A person blowing about a pattern in the shape of a brain

Can you breathe stress away?

It won’t hurt to try. But scientists are only beginning to understand the links between the breath and the mind

The Economist’s science and technology internship

We invite applications for the 2025 Richard Casement internship


A man sits inside a pixelated pink brain while examining a clipboard, with colored squares falling from the brain

A better understanding of Huntington’s disease brings hope

Previous research seems to have misinterpreted what is going on


Is obesity a disease?

It wasn’t. But it is now

Volunteers with Down’s syndrome could help find Alzheimer’s drugs

Those with the syndrome have more of a protein implicated in dementia

Should you start lifting weights?

You’ll stay healthier for longer if you’re strong