Ductwork in Duson
Duson sits along the I-10 corridor between Lafayette and Crowley, and its compact residential area features a mix of construction eras. Some homes have been here for decades with duct systems that were installed when central air first became standard in the area. Others are more recent builds with flex duct in the attic. Both types commonly develop ductwork problems that quietly drain comfort and energy efficiency.
Because Duson is a smaller community, homeowners sometimes settle for HVAC contractors who install and repair equipment but skip the ductwork evaluation entirely. That’s a gap in service, because your duct system is the delivery mechanism for everything your AC or furnace produces. The best equipment in the world can’t overcome ducts that leak, sag, or lack insulation.
Air You’re Paying For But Never Feel
Here’s the basic problem with leaky ductwork: your AC system produces conditioned air and pushes it into the duct network. Before that air reaches your rooms, a portion of it escapes through gaps in joints, disconnected sections, and deteriorated connections. In the average home, that loss runs 20 to 30 percent.
In Duson’s climate, where your AC system operates the majority of the year, that percentage translates into substantial waste. Your system runs longer cycles to make up for the lost air, your electric bills run higher than they should, and your equipment wears out sooner from the extra workload.
The fix starts with finding out how bad the problem actually is. We use a pressurized duct leakage test to measure total air loss. The test is quick, non-destructive, and gives us an exact number to work from.
Common Duct Issues We Find
Disconnected runs happen more often than you’d think. A flex duct connection that was marginal from installation day can pull completely free after years of thermal expansion and contraction. When that happens, the entire conditioned air supply for that run dumps into the attic. You’ll notice that the room served by that duct gets almost no cooling.
Inadequate insulation is widespread in older Duson homes. Ducts running through attics with R-4 insulation (or no insulation at all) absorb heat from the 140-degree attic and warm your supply air significantly before it reaches the register. Louisiana’s current code requires R-8 minimum for attic duct runs.
Crushed or restricted flex duct reduces airflow to the rooms those runs serve. Flex duct laid across sharp attic framing members or bent around obstacles without transition fittings loses a substantial portion of its capacity at each restriction point.
How We Fix It
Mastic sealing is the standard repair for leaky connections. We apply mastic to every accessible joint and seam. It cures to a permanent, flexible bond that handles attic temperature extremes without cracking or peeling. For connections that have pulled apart, we reconnect the duct, clamp it securely, and then seal with mastic.
Insulation upgrades bring your ducts up to the R-8 standard or higher. We wrap metal duct runs with foil-faced fiberglass and replace any flex duct sections where the integrated insulation has degraded.
When the existing ductwork can’t be salvaged, we design a replacement system sized to your equipment using Manual D calculations. We build metal trunk lines and transitions in our sheet metal shop and install flex duct branch runs with proper support and sealed connections.
Duson Ductwork Help
F & R Air Conditioning provides ductwork services for homeowners in Duson and throughout Lafayette Parish. If your home has comfort issues or energy costs that seem too high, call (337) 893-5646 for a duct evaluation.