Duct Sanitizing & Antimicrobial Treatment in Schertz
EPA-registered antimicrobial treatment — after cleaning, never instead of it.
01Schertz — the housing record
What Schertz actually has behind its walls.
Before anyone quotes a duct job here, this is the stock they are quoting against. It is public Census data, and it is different in every city we cover.
- Housing units
- 16,175
- Built pre-1980
- 9%
- Built 2000s
- 44%
- Built since 2010
- 27%
- Gas heat
- 17%
- Electric heat
- 82%
- Single-family
- 88%
U.S. Census Bureau, American Community Survey 5-Year Estimates (2023), tables B25034, B25040 and B25024. Percentages are rounded and describe the city, not your house.
What that means for ducts
Mixed-era stock
Schertz splits across build eras — 9% pre-1980, 27% since 2010 — so two houses on the same street can need completely different work. It is the case where guessing from the curb is worst, and where a camera before a quote saves the most money.
That is a reading of the city’s stock, not a diagnosis of your home. Which of it applies to you is exactly what the camera settles — and why we would rather run one than quote from a postcode.
02Working in Schertz
The part that changes from street to street.
Schertz is unusual in two ways that matter for ductwork. Almost every home is detached single-family, with very little attached or stacked housing anywhere in the city, and almost every one of them heats with electricity rather than gas. That means no flue, no heat exchanger, and one cabinet doing all the work: blower, evaporator coil, filter rack and strip heaters in a single box that is where nearly every real air-quality issue in this city begins. It also explains the burning smell people report on the first cold morning, which is dust scorching on the heat strips rather than a failure. The other local factor is turnover. With Randolph and the wider joint base next door, houses here change hands and tenants often, and a system inherits whatever the last household did to it. We find that history in the cabinet before quoting anything.
Crescent Bend Nature Park
- The Crossvine ·
- Greenshire ·
- Carolina Crossing ·
- Live Oak Hills
County
Guadalupe County
Same standard in Schertz as everywhere else.
Source removal to the NADCA ACR standard, a written quote before anything is touched, and camera photographs of your own runs before and after. We are not going to re-argue that on every city page — it is set out once, in full, on the service page.
- Surface-prep verification — treatment goes on cleaned ducts only
- EPA-registered, HVAC-labeled product applied per label directions
- Treated areas documented with photos
- Product name and label information left for your records
- From
- $149
- On site
- 45–60 minutes as an add-on
- Scope
- 4 lines
Prices shown are starting estimates and may change with the condition, access, and scope we find on site. Only a written quote from an on-site visit is a price we commit to.
03Duct Sanitizing & Antimicrobial Treatment — in this stock
When a treatment is actually indicated.
Treatments are offered on evidence, not on age. In mixed stock that means the camera decides: staining, animal intrusion, or a documented moisture event. No indication, no treatment — and our technicians are not paid on what they add.
Is the antimicrobial treatment safe for my family and pets?
We only use products EPA-registered specifically for use in HVAC systems, applied exactly as the label directs — including any re-entry and ventilation instructions, which we walk you through before we start. You also get the product name and label documentation for your records.
Why won't you sanitize without cleaning first?
Because fogging product over a layer of dust treats the dust, not the duct surface — the buildup simply shields what's underneath. It wastes your money and violates the spirit of the label.
04Book in Schertz
Three fields, and a person calls you back.
Tell us the ZIP and we will tell you what your system likely needs — including, sometimes, that it needs nothing yet. Nothing is charged until you have approved a written quote.
05Questions
Asked in Schertz, answered straight.
Is the antimicrobial treatment safe for my family and pets?
We only use products EPA-registered specifically for use in HVAC systems, applied exactly as the label directs — including any re-entry and ventilation instructions, which we walk you through before we start. You also get the product name and label documentation for your records. No off-label products, no improvised mixes, ever.
Why won't you sanitize without cleaning first?
Because fogging product over a layer of dust treats the dust, not the duct surface — the buildup simply shields what's underneath. It wastes your money and violates the spirit of the label. Source removal first, then treatment where there's a documented indication. Any company that offers it the other way around is selling theater.
We're a military family renting near Randolph. What can we reasonably ask for?
A fair question and a common one here. Ask the owner for the filter size and a change schedule in writing, and report sweating vents or a whistling return promptly. Documented airflow complaints get repairs approved far more often than a general request for duct cleaning ever does.
First cold morning of the year, the house smells like burning. Is that dangerous?
Usually it is dust on electric heat strips, which nearly every Schertz home has instead of a gas furnace, and it burns off within minutes. If the smell lasts, repeats on later runs, or comes with tripping breakers, stop using heat and have the air handler inspected before anything else.
There's no furnace in our attic, just one cabinet. What actually gets inspected?
In an all-electric Schertz home that cabinet is the air handler: blower, evaporator coil, heat strips and filter rack in one box. It is also where nearly every genuine air-quality problem starts. We open it, photograph the coil and check the condensate drain before discussing the duct at all.
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