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O&S’s MEP group delivers quality service through all phases of the design & construction process

Our expert professionals have the experience in managing integrated and multi-disciplinary projects throughout the country.

O&S’s engineers and designers are continuously striving to provide intelligent selections of equipment with energy-saving features, which can be installed in well-conceived environments for convenient access and ease of maintenance during their operational life. Thus, Our designs also incorporate the use of sensitive electronic equipment for adaptability, flexibility, and space efficiency as part of the overall interior planning.

Our capabilities include:


  • Survey of Existing Buildings
  • Local and National Code Review
  • Master Planning for Phased Projects
  • Due Diligence and Transition Report
  • MEP Feasibility Reports
  • Detailed MEP Studies
  • MEP Basis of Design Reports
  • MEP Load Calculations
  • Life Cycle Cost and Budget Analysis
  • Peer Reviews
  • Value Engineering

Design HVAC Systems

  • Design of central cooling and heating plants
  • Boiler and chillers replacement and conversions
  • Condenser and chilled water systems
  • VRF systems
  • Split air conditioning and heat pumps
  • HVAC pumping systems
  • Heat exchangers
  • Heat recovery systems
  • Cooling towers
  • Cogeneration
  • Air distribution and pressurization systems
  • Displacement ventilation systems
  • Steam and hydronic distribution systems
  • Underground utility piping systems
  • Direct digital controls systems
  • Industrial ventilation systems
Mechanical System Planning, MEP Coordination, Building Systems Integration

Plumbing Systems

  • Water supply design
  • Natural gas piping and conversions
  • Sanitary waste engineering
  • Ejector pumping systems
  • Roof and area drains
  • Fluid and gas distribution system
  • Waste management systems
  • Chemical, gases, and toxic storage systems
  • Specialized pumping systems
  • Industrial water treatment
  • Water and waste monitoring
  • Microprocessor controls and automation systems
  • Replacement of domestic water heaters
  • Water management systems and filtration

Fire Protection Systems

  • Latest codes review
  • Selection of various alternatives of wet, dry, and deluge sprinkler systems
  • Fire standpipes
  • Application of fire pumps
  • Pressurized stair wells
  • Halon, foam, FM-200, NOVEC, and hypoxic air alternatives
  • Smoke and fire detection systems
  • Atrium smoke exhaust
  • Evacuation plans and procedures using computer models
  • Emergency generators and elevator emergency controls

Electrical Power and Distribution Systems

  • Lighting (indoor and outdoor)
  • Electric service and power distribution systems
  • Fire alarm systems
  • Emergency power generation
  • Harmonic analysis
  • Security systems
  • Low Voltage Communication systems
  • CCTV

Energy Efficiency

  • Energy Audits
  • Utility Rates Studies
  • Energy Feasibility Studies
  • Thermal Ice Storage
  • Renewable Energy Strategies
  • Energy Management and Controls Systems
  • MEP Systems Commissioning and Retro Commissioning

Construction Support Services

  • Preparation of Construction Bids and RFP Packages
  • Bid Reviews and leveling Analysis
  • Pre-Construction Reviews
  • Owner’s Representation
  • Shop Drawing Reviews
  • Preparation of Punch List Reports
  • Preparation of As-Built Drawings
  • Progress Inspections
  • Final Inspections
Electrical Power Distribution, Plumbing System Engineering, Fire Sprinkler Design, MEP Retrofitting Sustainable MEPF Design, Energy-Efficient MEPF Solutions, MEPF Coordination

Please take a look at our successful MEP & Fire Protection Project Experience

MEP/FP Project Experience

Learn more about NYC Local Energy Laws:

NYC Local Law 84: NYC DOB Local Law 84

NYC DOB Local Law 87: NYC DOB Local Law 87

Local Law 97: NYC DOB Local Law 97