Some U.S. oil refineries are still using WWII-era heaters and boilers, leading to excess pollution

The Environmental Integrity Project examined publicly available data and records for the 20 petroleum refineries in the U.S. that reported emitting the most greenhouse gases in 2023. Of the refineries whose boilers had age information, 87 percent of those units (739 of 845) are outdated, the group found. While experts have concluded that boilers and heaters work most efficiently when they are 15 years old or younger, the average age of the heating systems in the largest refineries is more than 40 years old. The oldest refinery boiler that EIP found dated to 1948, with the oldest heater installed in 1939.