Subpart G - Commercial Water Heaters, Hot Water Supply Boilers and Unfired Hot Water Storage Tanks  


§ 431.101 - Purpose and scope.
§ 431.102 - Definitions concerning commercial water heaters, hot water supply boilers, unfired hot water storage tanks, and commercial heat pump water heaters.
§ 431.104 - Sources for information and guidance.
§ 431.121 - Purpose and scope.
§ 431.122 - Prohibited acts.
§ 431.123 - Compliance certification.
§ 431.124 - Maintenance of records.
§ 431.125 - Imported equipment.
§ 431.126 - Exported equipment.
§ 431.127 - Enforcement.
§ 431.128 - Cessation of distribution of a basic model.
§ 431.129 - Subpoena.
§ 431.130 - Remedies.
Test Procedures
§ 431.105 - Materials incorporated by reference.
§ 431.106 - Uniform test method for the measurement of energy efficiency of commercial water heating equipment.
§ 431.107 - Uniform test method for the measurement of energy efficiency of commercial heat pump water heaters.
Energy Conservation Standards
§ 431.110 - Energy conservation standards and their effective dates.
Appendix A to Subpart G of Part 431 - Uniform Test Method for the Measurement of Thermal Efficiency and Standby Loss of Gas-Fired and Oil-Fired Storage Water Heaters and Storage-Type Instantaneous Water Heaters
Appendix B to Subpart G of Part 431 - Uniform Test Method for the Measurement of Standby Loss of Electric Storage Water Heaters and Storage-Type Instantaneous Water Heaters
Appendix C to Subpart G of Part 431 - Uniform Test Method for the Measurement of Thermal Efficiency and Standby Loss of Gas-Fired and Oil-Fired Instantaneous Water Heaters and Hot Water Supply Boilers (Other Than Storage-Type Instantaneous Water Heaters)
Appendix D to Subpart G of Part 431 - Uniform Test Method for the Measurement of Standby Loss of Electric Instantaneous Water Heaters (Other Than Storage-Type Instantaneous Water Heaters)
Appendix E to Subpart G of Part 431 - Uniform Test Method for the Measurement of Energy Efficiency of Commercial Heat Pump Water Heaters