GNA Consulting Engineers

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Sustainable Design

Since 1988, GNA Consulting Engineers (GNACE) has been dedicated to exceptional performance, Architectural design and engineering for Mechanical & Electrical systems, project management and construction administration.

Summary of Our Services

GNA Consulting Engineers is a NYC full-service consulting engineering firm specializing in Architectural Engineering, Mechanical, Electrical & Building System Controls, project management and production services. Our divisions: Commercial, General facilities, Residential and Public Transportation

Full-service means exactly that at GNA Consulting Engineers we have the depth of talent and experience to provide the highest quality engineering. GNACE has a licensed professional engineer to stamp building plan projects in CT, NY, MA

Our services include: HVAC Sustainable Design

  • Variable air volume
  • Constant air volume
  • Chilled water and cooling tower systems
  • Hot water heating systems
  • Geothermal systems: open, closed loop well design
  • Refrigerant energy recovery
  • Radiant heating and cooling
  • Heat recovery systems
  • Rain water recovery systems
  • Steam distribution and heat recovery systems
  • Mechanical ventilation and exhaust systems
  • Digital Control Systems
  • Electrical Green Design
  • Green Power distribution systems
  • Solar PV panel distribution systems
  • Emergency power distribution
  • Uninterruptible power distribution
  • Grounding and bonding systems
  • Electronic control systems
  • Service entrance design
  • Public utility coordination
  • Lighting systems

Our services also include:
Structural design, evaluations and Inspections, Landmark building modifications, Tunnels and NYC Local law 11, Reports and Professional Certifications.

Mechanical Engineering

  • Heating, ventilation and air conditioning: HVAC systems
  • Process piping
  • Industrial exhaust
  • Instrumentation
  • Renewable energy sources
  • Cogeneration engineering: Wind Energy, Solar Energy, Bio Fuel Energy, biomass processing, geothermal power
  • Heat recovery
  • Clean rooms
  • Plumbing systems
  • Fire Protection & Sprinkler system design
  • Construction Administration

Electrical Engineering

  • Building power
  • Standby power plants
  • Branch wiring
  • Uninterruptible power supply systems
  • Special grounding systems
  • EMI shielding
  • Wire management
  • Reports and documentation





Control Systems Engineering

  • Monitoring and control systems
  • Fire management
  • Security management
  • Communications network integration
  • Audio visual systems
  • Distributed direct digital control
  • Energy management
  • Process control
  • Performance optimization
  • Building network integration
  • Conservation analysis
  • Fire and Safety systems

Critical Systems Design

  • Facility condition assessment studies for critical operation
  • Peer review of system designs
  • Best practices/standards development
  • Capacity, demand and flow analysis
  • Energy savings evaluations
  • Single point of failure studies
  • On-site -- permanent engineering support
  • UPS, trading site, data center and recovery trading site programming including equipment and cabinet layout and configurations
  • Short circuit and coordination studies
  • Failure investigations  


Green Building Commissioning

A systematic process of ensuring that all building systems perform interactively according to the contract documents, the owner’s objectives and operational needs. This is achieved ideally by developing and documenting Owner’s Project Requirements beginning in the pre-design phase; continuing through design, with reviews of design and contract documents; and continuing through construction and the warranty period with actual verification through review, testing and documentation of performance.


For partnership,  association and collaboration:

Reply in confidence to George Nestor, PE @