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San Antonio Duct Cleaning
Almost every duct system in this city runs through the attic, and a San Antonio attic is a dusty, 120-degree place for most of the year. Flex duct from the 1990s and 2000s subdivisions of Stone Oak, Alamo Ranch and the northeast side sags, kinks and separates at the joints over time, and every gap pulls in attic air along with insulation fibers and dust. On top of that comes what blows in from outside: live oak pollen every spring, mountain cedar every winter, and the Saharan dust that hazes the sky most summers. With a system that runs seven months straight, all of it gets drawn through the ducts and, eventually, back into the rooms.
Older homes have their own version. The metal ducts in 1950s and 60s houses in Alamo Heights, Terrell Hills and the near north side have decades of accumulation and often a few rusted or disconnected sections. Newer builds in Cibolo and the far west side can have drywall dust and sawdust from construction sitting in the runs from day one. And in the humidity here, a duct that has been pulling in moist attic air can develop the musty smell homeowners notice most.
Our duct cleaning page explains the equipment and the process in detail. Here is how we approach a San Antonio house.
Do You Need It?
Duct cleaning is oversold in this business. These are the situations where it genuinely helps.
You do not know what the last owners did, whether they had pets, or when the ducts were last touched. A look inside settles it.
Drywall sanding and sawdust get into open registers and stay there. Common in new Alamo Ranch and Cibolo builds.
A thin film on every surface that comes back fast points to ducts that are either loaded or leaking attic air.
Moisture in the ductwork or on the coil. In San Antonio humidity, this deserves a look at the coil and drain as well as the ducts.
Nesting material and droppings in ducts are a health issue, not a dust issue. The entry points need sealing too.
Sometimes a blockage, more often a crushed or disconnected flex duct in the attic. Cleaning alone will not fix the second one.
What We Do
Cleaning is one option. Depending on what the camera shows, sealing or repair may be the better use of your money.
The Job
A few hours for a typical single-system home. Longer for two systems or a lot of runs.
Camera into the ducts, a look at the attic connections and the coil. You see what we see before anything is priced.
Cleaning, sealing, repair, or none of the above. Priced in writing and honored for 72 hours, no hidden fees.
The system is put under vacuum and each run is agitated toward the collector. Registers come off, get cleaned and go back.
Any leaks you approved are sealed, a fresh filter goes in, and we run the system to confirm airflow at every register.
Save on the work your home needs most.
Start with an inspection. If cleaning will not help, we will tell you.
Don't just take our word for it — hear from our satisfied customers
Maintenance Membership
Home maintenance for $9.99 a month.
Care Club members get two HVAC tune-ups and a plumbing safety inspection every year, priority scheduling, no dispatch fees — ever — and 5% off every repair.
There is no fixed schedule, and anyone who quotes you one every year is selling. Ducts need cleaning when they are dirty, and the honest way to know is to look. In San Antonio the things that load ducts faster than average are a leaky attic duct system pulling in dust and insulation, pets, a remodel, heavy oak or cedar pollen seasons with a weak filter, and a rodent problem in the attic. For a well-sealed system with a decent filter changed on time, many years can pass without a need. Our approach is a camera inspection first, and a cleaning quote only if the inspection justifies one.
Only a little on its own. Mountain cedar pollen is fine enough to pass through a basic filter, and the pollen that is in your ducts is far less than what comes in through doors, windows and on clothes every day from December through February. Cleaning removes what has accumulated, which helps if the ducts are heavily loaded, but the bigger wins are a higher-efficiency filter or whole-house filtration, sealing the ducts so they stop pulling in attic air, and running the system fan to keep air moving through that filter. We often pair a duct cleaning with a filtration upgrade for exactly this reason. The options are on our San Antonio indoor air quality page.
Because in this city they are hard to separate. A large share of the San Antonio duct systems we inspect have leaks at the joints, crushed sections behind attic storage, or a run that has pulled off its boot entirely. A leaky duct pulls hot, dusty attic air into the system every time the blower runs, which is how the ducts got dirty in the first place. Cleaning them without sealing them means the dust is back in a couple of seasons, and you are still paying to cool the attic. Sealing also has a comfort payoff: the rooms at the end of the longest runs finally get the air they were supposed to. Details are on our duct sealing page.
Not when it is done under negative pressure, which is the only way we do it. A large vacuum is connected to the duct system so that everything loosened inside the ducts travels toward the collector rather than out of the registers. Technicians cover floors along their path, remove and clean the register covers, and put them back. You will want to move furniture away from registers and returns before we arrive and keep pets in another room. When we leave, the system is reassembled, a new filter is in place, and the only visible change should be that the registers are cleaner than they have been in years.