Duct Cleaning in San Marcos, TX
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Hays County ductwork sits idle most of the year
Your ducts only really work November through March here, five months a year. The rest of the time they sit closed up, and dust settles into them undisturbed. When the furnace finally kicks on for a cold night, with winter lows here averaging 41°F, that dust gets pushed straight into the rooms you're heating.
Hays County has also seen 8 winter storms and 36 damaging wind events over the past ten years. Storms like that mean power interruptions, and across Texas a third of households lost power for at least 24 hours in 2024. When a system sits off during an outage and then restarts, whatever settled in the ducts during the downtime moves again the moment air starts flowing.
- 5 months
- November through March, your furnace pushes air through your ducts
- 7 months
- April through October, your air conditioner does the same
NOAA nClimDiv, 1991–2020 normals
- How often should air ducts be cleaned?
- There's no fixed schedule that fits every house. What matters more is what's going on inside it. Pets, a recent remodel, or anyone with allergies can mean cleaning sooner than you'd otherwise think about it. If no one in the house can remember the last time it was done, that's reason enough to have a contractor take a look.
- Is air duct cleaning worth it?
- It's worth it when there's a real reason behind it, not just as a routine habit. Dust blowing out of the vents, a musty smell when the system runs, or work that opened up the ducts are all good reasons. Cleaning won't fix a duct that's leaking or crushed, so if the real problem is airflow, that needs a look first. A contractor can tell you what's actually in the ducts before you pay to have them cleaned.
- What does air duct cleaning involve?
- A contractor connects a vacuum system to the ductwork and uses brushes or air tools to knock dust and debris loose so it can be pulled out. Every supply and return in the house gets cleaned, along with the main trunk lines. The furnace or air handler often gets cleaned at the same time, since that's where the blower and coil sit. Registers and grilles come off during the process and go back on once the line is clear.