Forensic Inspection
Knowledge Base
Technical guides, application notes, and industry insights for HVAC inspection professionals and forensic investigators.
UV Fluorescence Biofilm Detection in Air Ducts: The Complete Technical Guide
How 365 nm and 405 nm UV illumination reveals biofilm colonies, mold growth, and organic contamination invisible to white-light inspection — with full methodology, NDT standards, and healthcare applications.
Thermal IR Water Leak Detection in Air Ducts: A Technical Field Guide
How in-duct infrared thermography detects moisture intrusion, active water leaks, condensation zones, and thermal anomalies — with full field protocol, NDT standards, and insurance documentation guidance.
SpectraSwitch™: Multi-Spectrum Inspection in a Single Pass
How the VD-FID's SpectraSwitch™ system integrates white-light, UV 365/405 nm, and thermal/IR imaging into a single probe — eliminating workflow interruptions and producing co-registered multi-spectrum evidence in one pass.
NADCA ACR Standard: Documentation Requirements for Duct Inspection
A practical guide to the NADCA ACR standard — what it requires, how ductoscope video evidence supports compliant inspection reporting, and why visual documentation is the foundation of defensible HVAC assessment.
Hospital HVAC Mold Inspection & Healthcare IAQ Compliance: A Clinical Governance Framework
Comprehensive guide to healthcare IAQ compliance, hospital HVAC mold inspection, UV biofilm detection in clinical environments, and NDT endoscope methodology for evidence-grade duct assessment — covering ASHRAE 170, NADCA ACR, Joint Commission, and CDC/HICPAC standards.
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