Full ductwork replacement ($2,000–$10,000 depending on home size) is rarely covered under any home warranty. Coverage is for discrete, accessible failures - not whole-system remediation. If your ductwork is in poor condition, a home warranty won't solve the underlying problem.
What Ductwork Coverage Typically Includes
What's Excluded
Ductwork in walls or inaccessible areas
Leaking ducts buried in walls or encased in concrete slabs require opening walls or breaking slab - excluded as a code upgrade or structural issue.
Insulation
Duct insulation is excluded regardless of condition.
Flexible duct replacement
Collapsed or significantly degraded flex duct often requires full replacement - some plans cover specific linear footage, others exclude it entirely.
Sheet metal fabrication
Custom duct fabrication for modifications or additions is excluded.
Asbestos-containing ductwork
Older homes (pre-1980) may have duct insulation containing asbestos. Remediation is excluded - it's a hazardous materials issue.
When Ductwork Coverage Matters
Ductwork problems show up as rooms that won't cool or heat, high energy bills without other explanation, or hot/cold spots. HVAC technicians often discover ductwork issues when diagnosing HVAC performance problems.
Higher Value Situations
- Older homes where ductwork is aging
- Accessible attic or crawl space ducts
- Climates with extreme temperature differentials
- Single disconnected duct run
Coverage Won't Help
- Ductwork embedded in slab
- Whole-system degradation
- Asbestos-insulated older ductwork
- Ducts run inside finished walls
Reality check: Ductwork coverage is a secondary benefit - useful when a technician discovers an accessible duct failure during an HVAC call. It's not a meaningful protection against major ductwork problems. Evaluate your home warranty primarily on HVAC caps and appliance coverage.