R.W. Sullivan Engineering

We invent, define & craft innovative experiences

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About the firm

R.W. Sullivan Engineering is a Boston-based engineering office with over 75 years of continuous practice, now in its third generation of family leadership under President Paul D. Sullivan. RWS delivers comprehensive MEP, code consulting, commissioning, and energy modeling services to healthcare, life sciences, higher education, and commercial clients throughout New England and nationally. With a staff of over 95 professionals, the practice integrates technical design and regulatory expertise to support complex institutional and building systems projects.

Established
1945
Team
Midsize
Firm type
Electrical Engineering · Fire Protection Engineering · Mechanical Engineering · MEP

Credentials

LEED Accredited Professionals

People

Paul D. SullivanPresident

Capabilities

HVAC Engineering

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Delivering custom thermal comfort and indoor air quality solutions designed to optimize building energy performance and occupant safety.

  • Heating and Cooling System Design
  • Ventilation and Air Distribution
  • All-Electric HVAC Systems

Electrical Engineering

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Designing robust power distribution, lighting, and emergency systems to ensure operational reliability and energy efficiency.

  • Power Distribution and Generation
  • Energy-Efficient Lighting Systems
  • Emergency and Standby Power

Plumbing Engineering

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Providing clean water supply, sanitary drainage, and specialized piping solutions tailored to commercial, institutional, and medical facilities.

  • Domestic Water and Sanitary Systems
  • Medical and Laboratory Gas Systems

Fire Protection Engineering

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Developing integrated life safety solutions including suppression, detection, and alarm systems to protect occupants and property.

  • Fire Suppression and Sprinkler Design
  • Detection and Alarm Systems
  • Fire and Smoke Modeling

Code Consulting

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Navigating building regulations, regional codes, and compliance reviews to streamline project approvals and safety compliance.

  • Building Code Compliance Analysis
  • Regulatory Review and Inspection Support
  • Equivalency and Variance Documentation

Commissioning

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Verifying that building systems are installed, tested, and operating in accordance with design intent and operational requirements.

  • MEP Systems Commissioning
  • Retro-Commissioning Services

Telecommunications, Data & Security

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Designing infrastructure for connectivity and security to support modern communication and asset protection.

  • Structured Cabling and IT Infrastructure
  • Electronic Security and Access Control

Energy Modeling

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Simulating building energy consumption to support sustainability goals, carbon reduction, and environmental compliance.

  • Whole-Building Performance Simulation
  • Decarbonization and Electrification Analysis

Industries

Healthcare · Research Facilities · Life Sciences · Education · Commercial · Retail · Multifamily Residential · Residential · Hospitality · Government · Industrial

Projects

Moderna - Cambridge

Cambridge, MA · Life Sciences · Client: Moderna

Project details

Integrated engineering solutions supporting Moderna's facilities in Cambridge.

Stone Mill Lofts Restoration

Lawrence, MA · Multifamily Residential · 2024 · Client: Stone Mill Lofts

Project details

Engineering design for one of the first all-electric, mixed-income multifamily apartment communities in Massachusetts, restoring a 19th-century mill.

Via Separations Fit-Out

Watertown, MA · Life Sciences · 2024 · Client: Via Separations

Project details

Provision of integrated MEP/FP engineering and code consulting services for a technology fit-out project in Watertown.

R.W. Sullivan Engineering - Engineering Firms