Mechanical Engineering & HVAC Design Services
Licensed mechanical engineering consultants specializing in energy-efficient HVAC design, VRF systems, and code-compliant load calculations for commercial developments.
Discipline Overview
Optimizing Indoor Climate & Energy Efficiency
At M&S Mechanical, our mechanical engineering team focuses on creating environments that are thermally comfortable, energy-efficient, and fully compliant with the latest building codes. We go beyond simple duct layout; we provide comprehensive thermal analysis and system selection strategies that align with your project’s budget and sustainability goals.
From complex VRF systems for mixed-use developments to specialized kitchen ventilation for restaurants, our licensed Professional Engineers (P.E.) ensure every design meets strict ASHRAE 90.1 and IECC standards.
Our Capabilities
Core Mechanical Services
From schematic design to construction administration, we deliver full-service mechanical engineering.

Load Calculations
Precise heating and cooling load analysis using ACCA Manual N/J and Trace 700 to prevent system oversizing and ensure comfort.

Ductwork & Piping Design
Efficient layout of air distribution and hydronic piping systems, coordinated in 3D (Revit) to minimize clashes with structure.

Energy Modeling
Simulation of building energy performance for code compliance (COMcheck) and LEED certification points.

Equipment Selection
Selection of Chillers, RTUs, VRF, DOAS, and Boilers tailored to the specific load profile of commercial facilities.

Thermal Comfort Analysis
Ensuring consistent temperature and humidity control critical for hospitality, medical, and office environments.

Commissioning Support
Assisting in functional performance testing to verify systems operate as designed before occupancy.
- Elemento de lista nº1
Retrofit & System Upgrades
Replacing HVAC systems in occupied buildings requires more than just swapping units. It demands precise capacity studies, phasing plans, and decarbonization strategies to minimize downtime and tenant disruption.
- HVAC Electrification Strategies
- Energy Modeling for Existing Buildings
- RTU Replacements & Structural Coordination
Our Portfolio
Mechanical Engineering Projects

Multi-Tenant VRF System Design
New Jersey • LEED Silver Certified

Hotel Kitchen & MAU Design
Miami, FL • High-Capacity Exhaust

Big Box Retail HVAC Fit-out
New York, NY • Fast-Track Schedule
Common Engineering Questions
Design Development (DD) sets the system concept, equipment sizing, and main routing paths ensuring coordination with architecture. Construction Documents (CD) are the fully detailed, signed, and sealed drawings used for permitting and bidding, containing all specifications required for installation.
Retrofits require a thorough assessment of existing conditions. We evaluate structural capacity for new units, reuse existing ductwork where feasible, and plan phased work to minimize downtime in occupied buildings. We frequently use 3D laser scanning to ensure precise fit in tight mechanical rooms.
Energy modeling is typically required for LEED certification, to demonstrate compliance with ASHRAE 90.1 performance paths, or to qualify for utility rebates. It simulates the building’s annual energy usage to optimize system selection for long-term ROI.
Need a Code-Compliant HVAC Design?
Consult with our licensed mechanical engineers to optimize your building’s performance and ensure rapid permit approval.