Even in ‘normal’ times, using oil is one of the most expensive ways to heat our homes.

And it’s also among the most environmentally damaging since the kerosene is essentially highly concentrated jet fuel.

But outside urban areas, it’s long been the only choice other than electricity.

In the short term, there’s probably little that can be done other than targeting those who are “price gouging” in the hope that it dissuades others.

In the longer term, air source heat pumps might be the more reliable alternative where the cost of electricity to power the heat exchangers is regulated.

To work effectively, properties need to be well insulated but that also applies to all homes that don’t want to burn money unnecessarily.

Analysis shows that while the savings from switching are marginal for gas users, those whose heating is fuelled by oil can save significantly.

There is a pot of money available to help homeowners with the installation costs but it’s finite and demand for heat pumps is growing.

Environmental groups will hope that this second price shock in five years might be enough to convince more people to make the move.

But heat pumps are also becoming a political football in this election year with some parties suggesting the country can’t afford to change everyone’s heating when times are tough.