Several classes of equipment have been certified by South Coast AQMD as meeting all of the requirements in the associated rule. Certification of equipment helps businesses and residents comply with South Coast AQMD regulations by identifying equipment that already meets South Coast AQMD rule requirements.

Rule 1121: Residential-Type, Natural Gas-Fired Water Heaters
Certified Heaters List (R1121) (PDF, 493 KB) Last Updated 12/15/2023

Rule 1146.2: Large Water Heaters, Small Boilers and Process Heaters
Certified Boilers List (R1146.2) (XLSX, 69 KB) Last Updated 12/15/2023

Certified Emergency ICE Generators List
Certified E-ICE Generators List (XLSX, 79 KB) Last Updated 12/15/2023

Rule 1147: Automotive Spray Booth Make-Up Air Units
     Certification Letters
     Midco LNB 500 (PDF, 1 MB) Last Updated 5/31/2017
     Midco LNB 1000 (PDF, 1 MB) Last Updated 5/31/2017
     Midco LNB 1000 (PDF, 90 KB) Last Updated 12/21/2015
     Spray Enclosure Technology, Inc (PDF, 315 KB) Last Updated 12/21/2015

Rule 1138: Charbroilers with Integrated Catalyst
Certified Model List (R1138) (PDF, 582KB) Last Updated 5/5/2023

Rule 1186: Street Sweepers
Certified Model List (R1186) (PDF, 493 KB) Last Updated 2/18/2022