Yes, professional air duct cleaning effectively removes mold from Salem HVAC systems when performed by NADCA-certified technicians using proper remediation protocols. Pacific Northwest humidity in Salem creates ideal conditions for mold growth in air ducts, particularly during Oregon’s wet season from October through May. According to the Centers for Disease Control and Prevention, mold in HVAC systems requires physical removal combined with antimicrobial treatments preventing regrowth, not simple surface cleaning. Dr. Carpet Clean uses source removal methods extracting established mold colonies and applies EPA-approved antimicrobial treatments. Visible mold near vents, musty odors when HVAC operates, or respiratory symptoms worsening indoors all indicate potential mold contamination requiring professional attention throughout Salem, Keizer, and Marion County communities.