Air Duct Replacement in Venice, FL

When does duct replacement beat another cleaning?

Ask what the duct is made of. Flex with a torn inner liner cannot be cleaned. Neither can aged fiberglass ductboard. Venice has a lot of ductboard plenums and trunks from the 1970s through the 1990s. Once the facing degrades, it sheds fiber into the airstream. Brushing it speeds up the shedding. That is a replacement, not a cleaning.

Under-slab ducts are the other clear case. Some 1950s and 1960s ranch homes here still run supply through the slab. Those lines flood. Water sits in the low spots. The musty odor comes back every wet season no matter what gets sprayed down there. The fix is abandoning the slab runs and building new distribution overhead through the attic.

In vented attics we look for crushed flex in tight framing bays, branch takeoffs lying loose in blown insulation, and return plenums pulling hot attic air straight into the handler. Sand and insulation fiber inside supply runs tell the same story. Rooms farthest from the handler stay warm. Runtimes stretch. Indoor humidity stays high while the thermostat reads cold.

Boots and collars that sweat and stain ceiling drywall need new insulation and sealing, not just a patch.