Hvac Decontamination โ the Step Most Restorers Skip
If smoke entered the HVAC system, the system needs to be cleaned per NADCA (National Air Duct Cleaners Association) standards before re-occupancy. Soot inside ductwork acts as an odor reservoir โ every time the HVAC runs, it pushes that residue back into the living space. Owners report "the smoke smell came back" weeks after restoration. The reason is almost always that the ducts were not properly cleaned.
Our HVAC scope: source removal (HEPA vacuuming of supply + return ducts), antimicrobial treatment, replacement of any porous duct insulation that was contaminated, and replacement of the air handler filter + any disposable components. We document with before/after photos at multiple inspection points so the carrier sees the work was actually completed and not just billed.
For homes with old ductwork that was already in marginal condition before the fire, we will tell you honestly when replacement makes more sense than cleaning. The decision drives a different scope, different timeline, different insurance discussion โ better to know on day one than discover after a partial cleaning that the system needs replacement anyway.