Air Duct & Dryer Vent Cleaning questions from Williamson County homeowners
Will cleaning the ducts before cedar season do anything?
Some, if the runs are the source. Cedar pollen starts in the middle of December and peaks in the middle of January, and what the filter misses settles in the flex and comes back out of the registers every time the heat cycles. A cleaning in November or early December takes out that stored load along with the fall ragweed. It does nothing for what blows in through an open door in January, so a good filter changed on schedule still matters more than any one visit.
What does a whole-house cleaning cost in Round Rock?
$395 to $495 for one system, with the supplies, returns, trunks and plenums all included and the collars resealed where they have pulled loose. A second system is $250 on the same visit. Dryer vent cleaning is $129 on its own, or $475 to $575 bundled with the ducts. If you want eyes on the runs before spending that, a camera inspection is $79, credited toward cleaning. The figure is set from the square footage and the thermostat count when you call, and it is the figure on the invoice.
The house in Hutto or Leander is three years old. Does it need cleaning yet?
Once, and sooner than most people think. Ninety-four percent of Hutto's homes and about 85 percent of Leander's were built since 2000, and the system in a new house usually ran through drywall sanding and texture before the builder handed over the keys. That dust sits in the low spots of the flex and shows up as a fine white film on the register faces. One cleaning after the builder is done, with the runs put under negative pressure, is the cleaning the house needs for years, and it is priced the same as any other single-system home.
The Sun City system is from the 1990s and has never been opened. Clean or replace?
Clean, in most cases. Sun City opened in 1995, so its earliest flex duct has spent 30 years in a Georgetown attic, and runs that age sag between the straps, pull loose at the collars and hold dust in every low spot. The crew lifts them back onto the supports, seals the collars and the plenum seams with mastic and pulls the debris out under negative pressure. Replacement only comes up when a liner has split or a run is flattened under something stored on top of it, and the photos settle that before any price is attached.
Taylor's older houses have metal trunk lines. Is that a different job?
Same price, longer visit. More than a third of Taylor's homes predate 1970, and those usually have a sheet-metal trunk with branch runs instead of attic flex. Metal does not sag or tear, but it holds decades of fine dust along every seam, and the brushes have to work each branch from the register back to the trunk. The flat rate for a single system covers it.
The laundry is upstairs. How often does that vent need attention?
Every year. Most second-floor laundry rooms in Williamson County vent through the attic to a roof cap, and those long runs are exactly the ones that clog and come apart. The crew clears the run end to end, lifts the roof cap to pull the lint packed beneath it, and measures airflow at the cap before and after. The National Fire Protection Association counts about 13,820 home fires a year involving clothes dryers, and failure to clean is the leading cause at about a third. Repair and rerouting, when a run is crushed or has come apart in the attic, is $150 to $400.
How often should the ducts themselves be cleaned?
The EPA says to clean when there is a reason rather than on a calendar, and in Williamson County the reasons come around on a schedule: every three to five years with pets or allergies, five to seven without, once after any construction or remodel, and once in a new home after the builder is done. Pets and the cedar calendar put most Williamson County houses on the shorter interval.
Do you take apartment communities along I-35?
Yes. About 22 percent of Williamson County's 252,000 housing units are in multifamily buildings, and in Round Rock apartment complexes make up close to three in ten homes, so communities in Round Rock, Cedar Park, Georgetown and along I-35 commonly have long or shared dryer vent runs. An annual cleaning with photo documentation is what property managers and their insurers typically ask for. Pricing is per unit, set from how many vents the building has and how far they run, and the manager gets a photo pair for every vent and a dated report.
What about the blower and the coil?
The blower compartment is vacuumed and photographed on every duct cleaning. Cleaning the blower wheel and evaporator coil is a separate job at $249 to $349. It earns its price when nobody has ever cleaned the coil, the registers blow weak, or the system iced up last August. Texas lets an unlicensed crew clean ductwork from the supply plenum to the grilles if nothing is cut, no electrical connections are changed and only grilles come off. Opening the air handler to clean the blower wheel and coil goes beyond that, so that work is done by or under a TDLR-licensed air conditioning contractor.
Do I need the sanitizer?
Rarely. It goes on only after a cleaning, only when the camera shows growth rather than dust, and only as an EPA-registered product labeled for HVAC use. The cost is $99 to $149, the house gets ventilated afterward, and the product sheet comes with the invoice. Dust alone never gets it suggested.
Who does the work, and are they insured?
Texas has no separate duct cleaning license. TDLR rules allow duct cleaning without an air conditioning license as long as the work stays inside the duct system with no cuts or electrical changes, so insurance and method are what matter. The crew carries general liability insurance, works to the NADCA ACR standard, and sends before-and-after photos.
Have the square footage, the thermostat count and the city ready, and the price is settled in one call.