HVAC Seismic Letter of Compliance
When time matters and quality is non-negotiable, our HVAC Seismic Letter of Seismic Compliance service provides the certified documentation needed to confirm that your HVAC seismic installation complies with the approved design and applicable building code requirements.
Before issuing a certified HVAC Letter of Seismic Compliance, our engineers review the installation to verify that all required seismic restraints, anchors, braces, and supports have been installed in accordance with the approved design and current seismic codes. When required, we provide practical recommendations to resolve deficiencies quickly and help your project achieve compliance without unnecessary delays.
Our compliance reviews can include:
Engineering certification of compliant seismic installations
Technical support throughout the project
We deliver most HVAC Letters of Seismic Compliance in less than 24 hours once the required documentation and inspection have been completed, helping you stay on schedule for inspections, occupancy permits, and project turnover. Our clients rely on our speed, technical expertise, and practical engineering approach to achieve seismic compliance without unnecessary delays or overcomplicated requirements.
HVAC Seismic Design & Preliminary Report
A well-planned seismic design is the foundation of a successful HVAC installation. Our Seismic HVAC Preliminary Report provides contractors with clear engineering guidance before work begins, identifying the seismic restraint requirements, anchorage methods, and bracing details needed to ensure a safe and code-compliant installation.
Our preliminary reports can include:
Identification of HVAC equipment and systems requiring seismic restraint
Seismic restraint requirements for roof-mounted HVAC equipment
Seismic restraint requirements for ground-mounted HVAC equipment
Seismic restraint requirements for suspended HVAC equipment
Seismic bracing layouts and locations for ductwork and suspended equipment
Anchorage requirements and attachment methods for HVAC equipment
Seismic restraint requirements for Air Diffusers & Grilles Installed in Suspended Ceilings
Installation details and engineering sketches
Applicable building code and ASHRAE seismic requirements
Seismic calculations, where required
Equipment-specific restraint recommendations
Engineering notes and HVAC installation guidance
Coordination with mechanical drawings and project specifications
Answers to technical questions before and during installation
By addressing seismic requirements early, HVAC contractors can install systems correctly the first time, reduce field modifications, minimize costly delays, and simplify the inspection process. Following our recommendations from the start creates a smoother path toward obtaining your HVAC Letter of Compliance and successful project completion.
HVAC On-site Seismic Inspection
Our on-site HVAC seismic inspections can be performed before or after the installation of seismic restraints, depending on your project's needs.
A pre-installation inspection allows our engineers to review the existing HVAC installation, identify which equipment requires seismic restraint, and provide practical recommendations before work begins.
A post-installation inspection verifies that all seismic restraints have been installed correctly and comply with the approved design and applicable building codes before issuing a certified HVAC Letter of Seismic Compliance.
Our inspections include:
Verification of HVAC seismic restraint installation
Inspection of HVAC equipment anchorage and fastener installation
Verification of seismic bracing locations, spacing, and orientation
Inspection of rooftop, suspended, wall-mounted, and floor-mounted HVAC equipment
Inspection of HVAC ductwork seismic bracing
Review of field conditions affecting HVAC seismic compliance
Identification of installation deficiencies and required corrections
Engineering recommendations during construction
Final compliance verification prior to issuing an HVAC Seismic Letter of Compliance
During every visit, we work directly with HVAC contractors to answer technical questions, resolve field conditions, recommend practical solutions, and help your project pass inspection the first time.
HVAC Remote Seismic Inspection
Our remote HVAC seismic inspections offer a cost-effective and time-saving alternative to on-site visits for smaller scale projects. Using FaceTime or photographs our engineers can perform a comprehensive review of your HVAC installation without the need for travel.
Remote inspections can be performed before or after the installation of seismic restraints, depending on your project's needs.
A pre-installation remote inspection allows our engineers to review the existing HVAC installation, identify which equipment requires seismic restraint, and provide practical recommendations before work begins.
A post-installation remote inspection verifies that all seismic restraints have been installed correctly and comply with the approved design and applicable building codes before issuing a certified HVAC Letter of Seismic Compliance.
Our remote inspections can include:
Review of photos, videos, and live video calls
Virtual review of HVAC seismic restraint installations
Review of HVAC seismic bracing layouts and installation details
Verification of seismic restraints for rooftop, suspended, wall-mounted, and floor-mounted HVAC equipment
Review of seismic bracing for HVAC ductwork
Identification of non-compliant HVAC installations
Engineering recommendations and corrective guidance
Follow-up reviews after deficiencies have been addressed
Final compliance verification prior to issuing an HVAC Seismic Letter of Compliance
By eliminating travel while maintaining the same engineering expertise, our remote inspections help reduce project costs, accelerate project schedules, and provide a fast path toward HVAC seismic compliance. We work directly with HVAC contractors to answer technical questions, review field conditions, recommend practical solutions, and issue a certified HVAC Letter of Seismic Compliance as quickly as possible
Seismic HVAC Technical Support & Training
Our Seismic Technical Support & Training services help contractors, engineers, consultants, and project managers better understand seismic restraint requirements and confidently complete code-compliant installations.
Training sessions can be delivered remotely or on-site and are tailored to your project, trade, or organization.
Training topics can include:
ASHRAE Seismic Requirements
Seismic Anchorage Requirements
Seismic Bracing of Piping & Conduit
Roof-Mounted Equipment Restraints
Structure-Mounted Equipment Restraints
Suspended Equipment Seismic Requirements
Seismic Load Paths & Force Transfer
Installation Best Practices
Common Installation Mistakes & How to Avoid Them
Inspection & Code Compliance
Seismic Letters of Compliance
Answers to any questions on the topic
Our goal is to provide practical, easy-to-understand guidance that helps your team complete installations efficiently, avoid costly rework, and achieve code compliance with confidence.
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