When mold remediation doesn’t work, it’s not always because of poor cleaning. It’s often because of what wasn’t cleaned at all, and in many cases, that’s the HVAC system. Despite the best intentions, mold remediation frequently fails due to uninspected and untreated ductwork. The result? Lingering odors, returning health symptoms, and failed clearance tests. A proper mold remediation involving HVAC should include an HVAC inspection performed by a NADCA Certified, State Licen