Mechanical Acceptance Testing (MATT)
Mandatory under California Title 24, Part 6 for nonresidential commercial new construction, additions, and HVAC alterations. As certified Acceptance Test Technicians (ATT), Pacific Airflow performs independent field verification to ensure mechanical equipment operates precisely in accordance with code before your building department signs the final Certificate of Occupancy.
Pacific Airflow is strictly a testing and compliance company. We never sell or install HVAC equipment, safeguarding mechanical contractors from bid leaks and customer poaching.
Expert Mechanical Acceptance Testing for California Properties
Historically, post-installation studies by the California Energy Commission revealed that over 70% of commercial packaged rooftop units and economizers had defective dampers, miswired sensors, or failed sequences. These flaws lead to excessive energy usage, poor indoor air quality, and premature compressor failures.
Pacific Airflow provides certified, reliable Mechanical Acceptance Testing (MATT) throughout Northern California for commercial HVAC contractors, general contractors, and building owners who demand proper compliance sign-off from local building departments.
Our Title 24 Mechanical Acceptance Testing includes:
- Outdoor air ventilation rates & dynamic damper stroke testing (NRCA-MCH-02-A)
- Constant & variable volume economizers with FDD diagnostics (NRCA-MCH-03/05-A)
- Demand control ventilation (CO2 sensor calibration & modulation) (NRCA-MCH-06-A)
- Supply fan variable frequency drive (VFD) & static pressure resets (NRCA-MCH-07/08-A)
- Digital electronic NRCA-MCH submittals signed and delivered to your building department
When to Schedule MATT in Northern California
Regular scheduling prevents costly Certificate of Occupancy delays. Here is when contractors reach out to Pacific Airflow.
New Commercial Construction & Tenant Improvements (TI)
Whenever new packaged units, chillers, or variable air volume (VAV) systems are installed under commercial permits, building departments require certified MATT sign-offs prior to issuing a Certificate of Occupancy.
HVAC Equipment Change-Outs & Alterations
Replacing a rooftop packaged unit, adding an economizer, or installing new thermostatic controls on an existing building triggers Title 24 acceptance forms for that specific system.
Commissioning & Pre-Inspection Walkthroughs
Booking testing early allows our certified technician to catch damper calibration errors or sensor wiring issues while your installing mechanical crew is still on site, eliminating re-inspection fees.
How California Climate & Code Impact Testing Requirements
Northern California spans diverse Climate Zones—from Zone 11 (Sacramento, Red Bluff, Chico) to Mountain Zone 16 (Truckee, Lake Tahoe, Mount Shasta). Economizer changeover setpoints, dry-bulb vs. enthalpy requirements, and insulation duct standards vary strictly by climate zone under Title 24.
Valley Heat & Economizers
Hot summer valleys require accurate high-limit shut-offs so units don't pull 105°F outdoor air when free-cooling is unavailable.
Mountain Cold & Ventilation
Sierra and Cascade regions demand reliable damper closure sequences to prevent freezing coils and unnecessary heating loads.
Get in Touch
Ensure compliance and protect your job schedule with certified MATT testing in Northern California.
(530) 864-5042Electronic NRCA-MCH forms signed and delivered to your building department within 24 to 48 hours of passing inspection.
Our MATT Testing Process
Pacific Airflow follows a systematic approach that protects your project timeline and ensures prompt occupancy sign-off.
Inspection & Plan Review
We evaluate mechanical equipment schedules, plan notes, and Title 24 compliance documents to identify required NRCA-MCH acceptance protocols.
Safe On-Site Testing
Our certified technician uses calibrated instrumentation to test economizer actuators, dampers, sensors, and sequence controls per Title 24 mandates.
Deficiency Resolution
If an issue is found, we diagnose the exact physical cause on-site so your installing crew can correct it immediately without schedule delays.
Final Registry Sign-Off
We sign and transmit the official electronic Certificate of Acceptance to the state registry, providing documentation your building inspector accepts.
Why Choose Us for Mechanical Acceptance Testing
Contractors and property managers throughout Northern California trust Pacific Airflow for objective, dependable testing.
RSES Certified & 100% Impartial
We are dedicated testing technicians—we never sell or install HVAC equipment, ensuring zero conflict of interest and complete contractor protection.
15+ Years Commercial Experience
Deep hands-on familiarity with rooftop units, VRF systems, chilled water loops, and complex sequences across 11 Northern California counties.
Fast 24–48 Hour Registry Upload
Fast NRCA-MCH submittals keep your inspection milestones on track and prevent Certificate of Occupancy hold-ups.
Frequently Asked Questions
Click any question to view clear Title 24 compliance guidelines and testing protocols.
Schedule Mechanical Acceptance Testing (MATT)
Lock in your testing date or send equipment schedules for a fast, flat-rate estimate. We respond within hours with transparent pricing.