MECHANICAL ENGINEERING
VENTILATION DESIGN
Outdoor air, exhaust, and indoor air quality system layouts developed to your engineer’s
code basis and design narrative.
Our Founding and Mission
Introduction
Ventilation design touches nearly every space type in a building and carries direct implications for occupant health, code compliance, and energy performance. NexMEP Global LLC supports U.S. MEP consulting firms with ventilation system production, including outdoor air intake sizing, exhaust system layouts, make-up air coordination, and indoor air quality documentation, built from the ventilation rates and design narrative your engineering team establishes.
We produce the drawings, schedules, and calculation backup; your engineers determine the design approach and code compliance strategy. Where a ventilation requirement is ambiguous or subject to interpretation — as is common with mixed-use occupancies or spaces not explicitly listed in code ventilation tables — we bring the question to your engineer rather than resolving it independently.
DESIGN ACCURACY & COMPLIANCE
Why This Service Matters
Ventilation requirements are governed by multiple overlapping code sections — mechanical code minimum outdoor air, energy code exhaust and make-up air provisions, and space-specific requirements for kitchens, laboratories, parking garages, and other specialty occupancies. Coordinating these requirements correctly, and then translating them into a ductwork layout that fits within available ceiling space and coordinates with structure and other trades, takes considerable production time.
Errors in ventilation documentation are also among the more common sources of plan review comments, since reviewers routinely cross-check outdoor air and exhaust schedules against code minimum tables. Production support allows your engineers to focus on ventilation strategy and code interpretation while our team carries the resulting layout through detailed design, with schedules built to withstand that level of scrutiny.
Our Capabilities
Outdoor Air & Exhaust Layouts
Layout design for outdoor air intake, general/specialty exhaust routing, and make-up air unit coordination.
Indoor Air Quality (IAQ) Support
Documentation of IAQ systems and CO2-based demand-controlled ventilation (DCV) layouts.
Specialty Space Design
Tailored ventilation solutions for commercial kitchens, laboratories, parking structures, and assembly spaces.
Building Pressurization Control
Airflow balancing and positive/negative pressure coordination to support required spatial pressure relationships.
Renovation & TI Integration
Clear demarcation between new, reused existing, and demolished ductwork infrastructure.
Contractor Balancing Reference
Detailed documentation of supply, return, and exhaust airflow rates for accurate field balancing.
Calculations
Engineering Calculations
Calculation methodology built for accurate, traceable HVAC equipment sizing.
Outdoor Air & Exhaust Summaries
Outdoor air rate compilation per ASHRAE 62.1 or local mechanical code, alongside exhaust summaries for kitchen hoods, restrooms, and janitor closets.
Duct Sizing & Air Balance Backup
Make-up air balance calculations for building pressurization, SMACNA-aligned duct sizing, and DCV min/max air rate documentation.
Calculations
Systems We Support
Ventilation-related calculation support includes outdoor air rate compilation.
DOAS & ERV Systems
Dedicated outdoor air systems and energy recovery ventilators.
Kitchen Exhaust Hoods
Grease duct layouts, clearances, and fire suppression interlocks.
Parking Garage Exhaust
Exhaust routing integrated with CO monitoring controls.
Lab & Specialty Exhaust
Laboratory general exhaust, fume hood exhaust, and safety considerations.
Restroom & General Exhaust
Code-compliant exhaust air distribution for commercial facilities.
Demand-Controlled Ventilation
Integrated CO2-based ventilation airflow management.
Our ventilation production experience encompasses a full spectrum of systems, ensuring every component is accurately represented according to your engineer’s equipment selections and sequence of operations.
Calculations
Software, Workflow & Coordination
Rigorous backup calculations formatted directly for permit submission and QA/QC documentation.
Software & Production Workflow
Ventilation layouts are developed in Revit and AutoCAD MEP within your firm’s project templates, coordinated against architectural ceiling plans and structural framing early in the design phase to minimize conflicts. Our workflow includes routine internal reviews at each design milestone so your engineering team receives complete, coordinated ventilation packages.
Revit & AutoCAD Coordination
Exhaust and outdoor air ductwork is modeled with attention to routing efficiency and interdisciplinary clearance. We coordinate kitchen hood exhaust duct clearances, fire-rated shaft penetrations, roof framing penetrations, and louver/exhaust separation distances against architectural and structural conditions to prevent field clashes.
Calculations
Systems We Support
Expertise across diverse equipment lines, hybrid configurations, and complex mechanical setups.
Ventilation Floor Plans
Riser Diagrams
Equipment Schedules
Calculation Summaries
Need Help with Your Ventilation Documentation?
Partner with NexMEP Global LLC for accurate, code-aligned ventilation layouts and calculation support.
Our Core Philosophy
Typical Project Types
Commercial & Office
Workspaces, corporate headquarters, and mixed-use facilities.
Education & Institutional
K-12 schools, university laboratories, and assembly spaces.
Hospitality & Restaurants
Dining venues, full commercial kitchens, and lodging.
Multi-Family & Residential
High-rise residential developments and mixed-use complexes.
Calculations
QA/QC Process
A rigorous, multi-tiered review structure ensuring accurate, clear, and error-free submittals.
Consistency Audits
Cross-checking outdoor air and exhaust summaries against plan drawings and applicable code minimums.
Specialty System Checks
Rigorous inspection of high-risk commercial kitchen and laboratory exhaust documentation.
Pressurization Verification
Room-by-room airflow verification to guarantee design supply, return, and exhaust values maintain target pressures.
Why NexMEP Global LLC?
NexMEP Global LLC brings a dedicated production team with practical experience across standard and specialty ventilation systems, a consistent U.S. code and standards focus, and a multi-level QA/QC process that reduces rework during your engineer’s review cycle.