Subpart D. Subpart D—Commercial Warm Air Furnaces

• § 431.71 - Purpose and scope.
• § 431.72 - Definitions concerning commercial warm air furnaces.

• Test Procedures

  • SECTION § 431.75 - Materials incorporated by reference.
  • SECTION § 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

• Energy Conservation Standards

  • SECTION § 431.77 - Energy conservation standards and their effective dates.

• APPENDIX

  • Appendix A to Subpart D of Part 431—Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency)
  • Appendix B to Subpart D of Part 431-Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two)