UV Air-Purification Light Installation in Seguin
UV-C lamps installed where moisture lets microbes grow.
01Seguin — the housing record
What Seguin 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
- 12,565
- Built pre-1980
- 33%
- Built 2000s
- 22%
- Built since 2010
- 21%
- Gas heat
- 24%
- Electric heat
- 74%
- Single-family
- 72%
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
Retrofit-era ductwork
About 33% of Seguin's homes went up before 1980, which is before central air was designed into a house rather than added to it. Duct runs in that stock were threaded through attics and crawl spaces after the fact, often more than once, and the flex in them has had decades of Texas attic heat. Expect route surprises, expect joints that have worked loose, and expect a system nobody has opened.
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 Seguin
The part that changes from street to street.
Seguin holds two housing stocks that call for opposite work. A third of the city sits in the older grid near the square and the blocks below it, frame houses built before central air existed as a category, so the system went in decades later and the ducts took whatever void existed: a shallow attic with no headroom over the back rooms, a crawl space under the original block, a chase boxed into a closet corner. Return air is where those houses give out. One hallway grille was considered sufficient then and it is still the only return in many of them, so the blower works against a starved return and makes up the difference by pulling attic and wall-cavity air through every unsealed boot it can find. Out along the farm roads the picture reverses, with twenty years of subdivision building where the trunk lines are fine and the only debris arrived with the drywall crew. Factory-built housing accounts for a meaningful slice of the city as well, and in those the supply trunk sits in the floor cavity rather than overhead, so the register at your feet feeds a duct that cannot be reached from an attic at all. Very few addresses here have gas at the equipment, so what we open is nearly always an air handler with the coil seated directly over the supply plenum, and that coil is the one surface in the system that stays wet.
Texas Lutheran University
- Mill Creek Crossing ·
- Navarro ·
- Historic Downtown ·
- Starcke Park
County
Guadalupe County
Same standard in Seguin 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.
- UV-C lamp sized and positioned for your coil and plenum layout
- Mounting that shields wiring and plastic components from UV exposure
- Clean electrical connection with a full operation check
- Bulb-replacement schedule and owner walkthrough
- From
- $399
- On site
- 1–2 hours
- 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.
03UV Air-Purification Light Installation — in this stock
Treatment in stock with a moisture history.
Older houses are where microbial indications actually turn up, usually downstream of a moisture event nobody logged. Two rules apply and neither is negotiable: the source of the moisture is addressed first or the growth returns regardless, and porous material such as duct-board liner cannot be effectively cleaned — that is replacement work, not treatment. We will tell you which of the two you are looking at before anything is applied.
Will a UV light purify the air in my whole house?
Not by itself, and we'll never claim otherwise. Air moves past the lamp too quickly for much single-pass effect; UV's real work is keeping continuously wet surfaces — coil area, drain pan — clean, which prevents the microbial growth and odor that start there.
How often does the bulb need replacing?
Annually, as a rule. Germicidal output fades long before the visible glow does, so a lamp can look alive while doing little.
04Book in Seguin
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 Seguin, answered straight.
Will a UV light purify the air in my whole house?
Not by itself, and we'll never claim otherwise. Air moves past the lamp too quickly for much single-pass effect; UV's real work is keeping continuously wet surfaces — coil area, drain pan — clean, which prevents the microbial growth and odor that start there. Think of it as surface hygiene that complements filtration, not a force field.
How often does the bulb need replacing?
Annually, as a rule. Germicidal output fades long before the visible glow does, so a lamp can look alive while doing little. We put a dated label at the unit when we install, show you the swap procedure, and the replacement is a simple, inexpensive routine from there.
Our house near the square has one return grille in the hallway. Is that why it is always dusty?
Very likely part of it. When a system is short on return capacity the blower makes up the shortfall through leaks, and in a retrofitted Seguin house that means attic air and insulation fibers entering at the boots. Cleaning removes what has settled and does nothing about the mechanism. Sealing the return side, and sometimes adding a second return, is what actually changes the outcome.
Ours is a factory-built home with the vents in the floor. Can those ducts be cleaned?
The trunk and branches in the floor cavity can be worked from the register openings, and we camera what the scope reaches. Two honest limits apply. Floor registers collect everything that gets swept or spilled, so the first few feet are often worse than the rest of the run, and a floor duct that has been crushed or has taken water is a repair rather than a cleaning. We show you which one you have before quoting.
Our place is newer, out past the loop. Anything to do yet?
Probably one inspection and nothing more. Systems built in the last fifteen years are clean from use. What they occasionally hold is sanding dust or an offcut left in a boot before the registers were screwed on. If the boots are clear and each room is getting its share of air, that is what the report will say, and you get an interval rather than a quote.
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