U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 10Chapter IIPart 431Subpart E - Subpart E—Commercial Packaged Boilers

TEST PROCEDURES
§ 431.85 - Materials incorporated by reference.
§ 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.
§ 431.81 - Purpose and scope.
§ 431.82 - Definitions concerning commercial packaged boilers.

ENERGY EFFICIENCY STANDARDS
§ 431.87 - Energy conservation standards and their effective dates.
Appendix Appendix A - Appendix A to Subpart E of Part 431—Uniform Test Method for the Measurement of Thermal Efficiency and Combustion Efficiency of Commercial Packaged Boilers
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