Why we often recommend replacing contaminated ductwork instead of cleaning it.
Costa Mesa's remodel-heavy housing often has duct systems patched across eras — full replacement frequently beats another patch on runs that were never designed as a system.
Coastal proximity means higher ambient humidity for more of the year — a real factor for mold-sensitive households, since indoor relative humidity needs active management rather than relying on the AC alone.
See our full Duct Replacement (Not Just Cleaning) service page, or browse all HVAC services in Costa Mesa.