IECC Section C408 Compliance | Inspection-Ready | Performance-Verified.
Mechanical Systems Commissioning Services in DFW & across Texas.
Mechanical Systems Commissioning is increasingly mandated for commercial projects across North Texas under IECC Section C408, before mechanical and plumbing inspections.
GBES provides professional Mechanical Commissioning Services in Dallas, Fort Worth, Plano, Frisco, McKinney, Denton, and all around the State of Texas for all types of projects.
Texas Section C408 Requirements IECC.
Under Section C408 of the International Energy Conservation Code (IECC), Texas commercial buildings must demonstrate commissioning before final mechanical checks.
Before inspection approval:
✔ Commissioning completion must be verified by a Registered Design Professional (RDP) or approved agency.
✔ Construction documents must also outline commissioning requirements.
✔ Functional performance testing should be recorded.
✔ Reports for submission to Owner and to Code Official.
Incomplete commissioning documentation is a predominant issue for DFW, leading to mechanical inspection delays.
GBES prevents that.
Our Mechanical Commissioning Services in DFW.
Commissioning Plan Development (IECC 2021 – C408.2.1).
We will develop code-compliant Commissioning Plans for Texas commercial projects, including:
• Systems and equipment lists.
• Testing procedures.
• Criteria for performance verification.
• Commissioning schedules.
• Defined team responsibilities.
Our plans are consistent with the present municipality’s enforcement practices throughout DFW.
Complete Documentation & Inspection Support.
We provide:
• Final commissioning reports.
• Functional testing documentation.
• Owner turnover packages.
• Code-official-ready documentation.
We work directly with the project teams to ensure that all documentation is in order before the day of inspection.
No rejections. No last-minute delays.
Functional Performance Testing (Up to 20 Tons).
We verify proper installation and performance of:
• Commercial HVAC systems.
• Service water heating systems.
• Energy-related control systems.
• Mechanical equipment per approved construction documents.
Our testing proves that your systems are not just installed — they are functioning as designed, too.
Texas IECC Commissioning Exemptions.
Some commercial projects in Texas may qualify for exemption under IECC C408;
Exemption 1 — Small Mechanical Systems.
• Less than 480,000 BTU/hr cooling capacity.
• Less than 600,000 BTU/hr combined service water heating & space heating.
Exemption 2 – Individual Dwelling Units.
Systems serving individual dwelling or sleeping units under Section C403.5.
Not sure if your DFW projects require commissioning? GBES will review your scope and issue a compliance report.
Why DFW developers and contractors choose GBES.
✔ Texas Energy Code Expertise.
✔ Third-party commissioning authority.
✔ Rapid scheduling throughout DFW.
✔ Inspection coordination.
✔ IECC-compliant reporting in detail.
✔ Partner widely trusted in commercial projects.
We understand how Texas municipalities interpret IECC compliance—including its implementation—and help you pass inspections quickly.
Serving the Dallas–Fort Worth & Texas Markets.
GBES offers Mechanical Systems Commissioning across:
- Dallas County.
- Tarrant County.
- Collin County.
- Denton County.
- And nearby North Texas areas.
Statewide Texas commissioning services on request.
Schedule Your Texas Commissioning Consultation.
Don’t Allow Commissioning to Delay a Certificate of Occupancy.
Partner with a reliable DFW commissioning company that understands IECC enforcement and inspection laws.
Arrange a Mechanical Commissioning Consultation.
Serving Dallas, Fort Worth & all of Texas
Green Building Energy Sustainability Inc.
Main Office:
940-891-3803
Spanish Line:
682-246-8150
Call today for a Quote for Your Project.