M/E/P Engineering

Our engineers take a thorough approach to evaluating the unique MEP and fire protection engineering requirements associated with each project. Ensuring the correct level of control to heat and cool a building, providing electrical service supporting current and future operations, and ensuring the appropriate level of fire protection we design systems that are engineered within the context of the project. We understand that each client has unique system needs and preferences and LDG knows how to accommodate them.


  • Boiler and chiller plants
  • Variable primary pumping systems
  • Primary/secondary pumping systems
  • Building management systems (BMS)
  • Control systems
  • Energy recovery systems
  • Building automation system (BAS)
  • Dedicated exhaust systems
  • Ground source heat pump systems
  • Ventilation systems
  • Dedicated outside air systems (DOAS)
  • Variable refrigerant flow systems (VRF)
  • Ductwork designs
  • Codes/standards evaluations and reviews


  • Alternative power systems
  • Arc Flash Studies
  • Codes/Standards Evaluations and Reviews
  • Fire alarm systems
  • Life safety systems
  • Telecommunication systems
  • Specialty grounding systems
  • Interior & exterior lighting systems
  • Lightning protection systems
  • Medium voltage distribution systems
  • Motor control systems
  • Power distribution systems
  • SCADA systems
  • Methane detection systems


  • Domestic waste and vent systems
  • Domestic cold & hot water distribution systems
  • Domestic water heating and storage
  • Domestic water softening and filtration systems
  • Compressed air systems
  • Codes/standards evaluations and review

Fire Protection

  • Fire sprinkler system design and evaluation
  • Fire alarm and detection system design
  • Mass notification system design
  • Smoke control system design and commissioning
  • Building and fire code consulting
  • Performance-based fire protection engineering
  • Alternative means and methods reports and negotiations with local authorities
  • Facility assessments and analysis
  • Life safety inspections (The Joint Commission's Statement of Conditions)
  • Water supply testing and analysis
  • System commissioning
  • Storage and warehouse sprinkler design and gap analysis
News & Insights
News & Insights
LDG Promotes Stefanie English to Director of Engineering
Larson Design Group Announces Addition of Oklahoma City Engineering Firm ZRHD to Strengthen Federal Market Offerings
Employee Spotlight: LDG’s Director of Business Intelligence Christian Hess

WILLIAMSPORT, PA – Larson Design Group (LDG), an award-winning, employee-owned national architecture, engineering, and consulting firm, is pleased to announce the promotion of Stefanie Eng...

Larson Design Group (LDG), a leading national architecture, engineering and professional consulting firm, announced that ZRHD – an engineering consulting firm in Oklahoma City with high-en...

At LDG, we know that our people are our greatest asset.