
HVAC Expert Witness
Forensic failure analysis of heating, ventilation, air-conditioning, and refrigeration systems.
EIS Forensic provides HVAC expert witness and forensic engineering services for insurance carriers, attorneys, and building owners nationwide. Our HVAC investigators are licensed professional engineers with extensive backgrounds as design engineers, giving them a comprehensive understanding of how heating, ventilation, air-conditioning, and refrigeration systems are engineered, installed, and operated.
We investigate a wide array of HVAC components and systems, encompassing boilers, chillers, pumps, heat-exchangers, split-system air-conditioners, and gas-fired units. Recognizing the vital role that building management and automation systems play in mechanical operation, we analyze historical controls data to pinpoint the root cause behind a system failure. From a single residential unit to large commercial losses involving thousands of units, we determine what failed, why it failed, and who is responsible.
What We Investigate
- Boiler, chiller, pump, and heat-exchanger failures
- Split-system and packaged air-conditioner failures
- Refrigeration and commercial refrigeration systems
- Building automation and controls data analysis
- Energy and thermodynamic analysis
- Design defect and standard-of-care evaluations
- Mechanical code and installation analysis
- Product liability and equipment defect investigations
Engineers in This Practice

Joshua D. Lange, P.E.
Mechanical Engineer
Licensed Mechanical Professional Engineer with over twenty years of experience in HVAC, refrigeration, plumbing, and fire-suppression system forensic analysis, and design
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Hayden Lange
Mechanical Engineering Technician
Mechanical Engineering Technician with a strong background in HVAC system design and forensic investigations of residential and light commercial plumbing system failures.
View ProfileRelated Investigation Types

Mechanical System Failures
Investigating boilers, chillers, pumps, heat-exchangers, split system air-conditioners, and gas-fired units with a design engineer's perspective.

Construction Defects
Proficient review of project documents backed by years of experience designing and constructing building systems.

Weather Related Damage
Onsite equipment evaluations for hail, wind, flood, and lightning damage claims of all sizes.
Related Articles

August 27, 2020
HVAC Systems and Moisture Related Damage
Can your HVAC system cause mold or moisture damage? Understanding how air, relative humidity, and condensation interact is key to answering that question.
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August 17, 2020
Circulating Cool Basement Air
A simple thermostat adjustment can circulate the cool basement air throughout your entire home, helping equalize temperatures across floors during summer heat.
Read articleNeed a HVAC Expert Witness?
Contact EIS Forensic to discuss your case. We provide forensic engineering and expert witness services nationwide, for claims and lawsuits of all sizes.
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