The Energy Department is considering stricter standards for commercial gas and oil-fired furnaces.
The new rule would require gas-fired furnaces and oil-fired furnaces to have an input capacity of 225,000 BTUs per hour and have to have a thermal efficiency of at least 82 percent.
Under the Energy Policy and Conservation Act of 1975, the standards must be reviewed every six years.
The agency expects total benefits of the new standards to be $200 million a year and total annual costs to be $3.48 million.
The proposed standards are also expected to benefit the environment by reducing emissions of air pollutants and greenhouse gases.
The public has until April 6 to comment.