SUBPART D—Commercial Warm Air Furnaces (§431.71 to §431.77)
- 431.71—Purpose and scope.
- 431.72—Definitions concerning commercial warm air furnaces.
- 431.75—Materials incorporated by reference.
- 431.76—Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.
- 431.77—Energy conservation standards and their effective dates.