Pensioners in Sheffield who are better off are being urged to donate their fuel payments to those most in need.
Age UK wants to prevent up to 250 people dying prematurely from the cold in the city this winter.
The charity says winter fuel payments, which are paid automatically to all older people living in their own homes, often go to people who can already afford to heat their homes.
It is appealing for those who can to donate their payments, so it can better support the estimated 14,000 older people in Sheffield who live in poor quality, damp or draughty housing.
It's thought that 50,000 older people in Sheffield live in fuel poverty, with one in seven admitting they go to bed to keep warm and save heating costs despite not feeling tired.