Daniel Sager

Daniel Sager, PE, CFEI, CXLT

Forensic Mechanical Engineer, MEP Technical Lead

Philadelphia, PA

Daniel Sager

Daniel Sager, PE, CFEI, CXLT

Forensic Mechanical Engineer, MEP Technical Lead

Philadelphia, PA

GET TO KNOW Daniel Sager, PE, CFEI, CXLT

Daniel Sager, PE, is a Forensic Mechanical Engineer and Mechanical, Electrical and Plumbing Technical Lead, based in Philadelphia, Pennsylvania. Mr. Sager has nine years of engineering experience, including four years of forensics experience. As a Forensic Mechanical Engineer, Mr. Sager conducts cause and origin investigations into mechanical system and equipment failures at residential, commercial, and industrial properties, investigates the cause and origin of fires, inspects buildings to evaluate construction defect claims against designed and built conditions, performs accident evaluations, and develops expert reports with detailed findings and conclusions in support of litigation and property insurance claims.

Mr. Sager was recognized as Haag’s technical leader for the mechanical, electrical, and plumbing (MEP) disciplines, and is responsible for establishing and maintaining technical standards for all MEP work performed by Haag. As the technical lead, Mr. Sager is responsible for peer reviewing all deliverables in the MEP field and mentoring junior staff.

Prior to working as a forensic engineer, Mr. Sager spent five years designing and testing mechanical, plumbing, and fire suppression systems on naval ships. Mr. Sager was the lead mechanical engineer for the Full Ship Shock Trial of United States Navy aircraft carrier CVN 78, where he conducted evaluations and root cause analysis of failures to mechanical equipment and systems during shock testing and presented status updates on system capabilities and emerging risks to an oversight board consisting of US Navy Admirals and Captains.

Primary Areas of Consulting

Mechanical System Design and Operation

  • Plumbing systems and equipment: domestic water, hot water, natural gas, sanitary, storm drainage
  • HVAC systems and equipment: water sourced heat pump, variable refrigerant flow, steam, geothermal, split systems
  • Fire suppression systems and equipment: fire pumps, jockey pumps, sprinkler heads, tamper switches
  • Industrial, commercial, and residential mechanical systems

Mechanical Equipment Failure Analysis

  • Plumbing Equipment: Pumps, motors, valves, piping networks and components
  • HVAC Equipment: Condensers, evaporators, air handlers, boilers, cooling towers, fans, pumps, heat exchangers, ductwork
  • Residential Mechanical Equipment: Water heaters, boilers, furnaces, radiators
  • Lab based testing of subject vs. exemplar products and components including disassembly, destructive testing, microscopy

Construction Defect Evaluations

  • Industrial, commercial, and residential construction evaluation of as-built condition to designed condition
  • Code interpretation and standards compliance
  • Construction contract, documentation, and scope of work analysis

Accident Evaluations

  • Safety engineering examinations of constructed elements
  • Premises liability incident evaluations
  • Walkway surface evaluations, including tribometry (slip resistance evaluations)

Fire Origin and Cause Determinations

  • Residential, commercial, and industrial fire origin and cause evaluations
  • Collection, storage, and examination of evidence

Certifications

  • Certified Fire and Explosion Investigator (CFEI), 2025
  • Certified XL Tribometrist (CXLT), Excel Tribometers, LLC – 2024

Education

Bachelor of Science in Mechanical Engineering, Drexel University
2017

Licensed Professional Engineer in the States of:

Connecticut, Delaware, District of Columbia, Indiana, Maryland, Massachusetts, Michigan, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Virginia, Vermont

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