The £23 buy I’ve raved about for more than three years that keeps my energy bills under control – I tell everyone I know to buy them too

Pale pink living room with black sofas with pink cushions, a wooden oval coffee table and persian rug underfoot.

Some energy-saving measures can feel like flash-in-the-pan ideas that after a few weeks are quickly forgotten. But in order to reap the most benefits, it's a good idea to stick to those measures that you don't need to really think about once they've been adopted and that deliver results year after year.

Once such measure for me was when I installed radiator reflectors. And I raved about their impact at the time.