California Mechanical Acceptance Test Technician & Employer Certification Provider


Mechanical Acceptance Tests performed by MATT-2

With the 2019 Substantive Change Amendment, NEMIC provides two levels of MATT Certifications.

A NEMIC Certified MATT is one who is knowledgeable about Mechanical Acceptance Testing as required by the Standards. The MATT performs the acceptance verification reported on the Certificate of Acceptance (Field Technician).

A NEMIC-certified MATT Level 2 performs the work described above for all the Mechanical Systems Acceptance Tests listed in section 120.5 of the Standards, including Duct Leakage Testing as referenced in Nonresidential Appendix NA1.9.

For clarification, the MATT Level 2 scope for the 2016 Standards includes the following 18 Mechanical Acceptance Tests:

  1. NA7.5.1 Outdoor air ventilation systems (MATT Level 1 & 2)
  2. NA7.5.2 Constant-Volume, Single Zone Unitary Air Conditioners and Heat Pumps (MATT Level 1 & 2)
  3. NA7.5.3 Duct Systems as required by the Standards (MATT Level 2 only)
  4. NA7.5.4 Air Economizer Controls (MATT Level 1 & 2)
  5. NA7.5.5 Demand Control Ventilation Systems as required by the Standards (MATT Level 1 & 2)
  6. NA7.5.6 Supply Variable Flow controls (MATT Level 1 & 2)
  7. NA7.5.7, NA7.5.9 Hydronic System Variable Flow Controls (MATT Level 1 & 2)
  8. NA7.5.7 Boiler and/or Chiller Isolation (MATT Level 1 & 2)
  9. NA7.5.8 Hydronic Systems Supply Temperature Reset Controls (MATT Level 2 only)
  10. NA7.5.10 Automatic Demand Shed Controls (MATT Level 1 & 2)
  11. NA7.5.11 Fault Detection and Diagnostics (FDD) for Air Handling Units and Zone Terminal Units (MATT Level 2 only)
  12. NA7.5.12 Automatic Fault Detection and Diagnostics (FDD) for Air Handling Units and Zone Terminal Units (MATT Level 2 only)
  13. NA7.5.13 Distributed Energy Storage DX AC Systems (MATT Level 2 only)
  14. NA7.5.14 Thermal Energy Storage (TES) Systems (MATT Level 2 only)
  15. NA7.5.15 Supply Air Temperature Reset Controls (MATT Level 2 only)
  16. NA7.5.16 Water-cooled Chillers served by Cooling Towers with Condenser Water Reset Controls (MATT Level 2 only)
  17. Part 6 as applicable Energy Management Controls System (MATT Level 2 only)

Beginning with the 2019 Standards, MATT Level 2 scope will also include:

      18. NA7.5.17 Occupant Sensing Zone Controls (MATT Level 1 and 2)

Beginning with the 2019 Standards, Item 3. NA7.5.3 Duct Systems as required by the Standards (MATT Level 2 only) will include Duct Leakage Test Verification services normally provided by a Home Energy Rating System (HERS) rater. Item 17. Energy Management Controls Systems will be tested according to NA7.7.2 The MATT Level 2 scope will otherwise concur with any changes to Section 10-120.5 of the Standards after 2019.

Below is the 2019 MATT-2 scope listed by the Non-Residential Certificate of Acceptance (NRCA) forms: