Aldi has announced it is installing natural refrigerant units across all its UK stores.
HFCs are widely used in fridges, air conditioning and aerosol sprays.
The £20 million project is expected to lead to a 99% reduction in refrigerant gas emissions.
Mary Dunn, Communications Director at Aldi UK said: “By choosing natural refrigerants, we are reducing our impact on the environment while also assuring our stores are future proofed for years to come.
“We are continually looking for ways to improve our environmentally friendly credentials and upgrading our entire stores to energy efficient refrigeration is a key part of our commitment to being a responsible retailer.”
The project is scheduled for completion at the end of 2018.