Conditions drive the plan, not the catalog
Between the original ranch-era ductwork and the runs added for offices and retail after the Somerset Mall's 1969 opening, Troy's duct inventory spans enough eras that indoor-air planning should confirm which one applies before assuming a fix.
Make sure the scope addresses
- Current condition and the likely cause
- How the work area and rest of the home get protected
- Compatibility between new materials and existing equipment
- Permits, testing, cleanup, and finish restoration
- Exclusions, warranty coverage, and change-order handling
Troy context
Duct layouts in Troy vary by construction era: original ductwork from the 1960s-70s subdivision boom, retrofits added as those homes aged, and newer runs built into office and retail construction that followed the Somerset Mall's 1969 opening. Indoor air planning should start by confirming which era a given duct run actually belongs to.