Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterAir Duct Cleaning Company in San Marcos, TX
San Marcos sits in a wildfire-prone inland North County corridor where air duct cleaning is as much about fire-hardening as housekeeping. After every red-flag event, ducts in the tract homes along the SR-78 corridor pull in wind-borne ash and fine soot that standard filters miss. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and we clean, seal, and restore duct systems here using rotary brush and negative-air methods built for what this terrain throws at them. Call us at (361) 326-5060 for a free estimate.
Why San Marcos Homes Are Different
San Marcos combines a housing stock and climate pattern you won’t find in coastal cities to the west. Much of the city is 1980s-through-2000s master-planned tract housing and apartment or townhome complexes, with older single-story stock in the original San Marcos core. The flexible duct runs and tightly sealed tract systems common here mean cleaning often requires a technician who knows builder-standard layouts from those two decades.
Hot, dry inland summers push HVAC systems to run almost year-round, and the Santa Ana wind events plus nearby wildfire smoke drive ash and fine particulate into return-air intakes. The dry air also lets dust and construction debris stay loose and recirculate rather than settle out. When Santa Ana winds meet a wildfire in the hills east of the 78, the first call wave comes from the canyon-adjacent neighborhoods near San Elijo and the ridgelines, where ash stains the returns long before filters clog. No coastal city deals with that ash intrusion pattern, and no other inland city combines it with this mix of master-planned tract housing and steep canyon-edge lots.
Our Main San Marcos Services
San Marcos homeowners call us most often for these three jobs, each handled with The Garrison Standard: written price before work starts, background-checked uniformed technicians, and the site left clean.
Air Duct Cleaning in San Marcos
We clean supply and return ductwork with Rotobrush rotary brush systems and Nikro negative-air machines, pulling ash, dust, and construction debris from the flexible ducts common in San Marcos tract builds. After wildfire events, we focus on return-air intakes where fine particulate concentrates. Every job gets a written price upfront and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in San Marcos covers full-system cleaning, register and boot detail, and post-clean verification.
Dryer Vent Cleaning in San Marcos
Lint buildup in dryer vents is a fire hazard anywhere, but in San Marcos the dry air and constant HVAC airflow can accelerate accumulation in longer vent runs through attic spaces. We clear the full run from appliance to termination, inspect for proper airflow, and note any code issues with the vent routing. Our technicians carry the tools to handle roof and soffit terminations common in 1990s builds. Dryer Vent Cleaning in San Marcos includes written pricing and the same one-year guarantee.
Duct Sealing in San Marcos
The flexible ductwork in San Marcos tract homes degrades at connection points and seams, leaking conditioned air into attics and crawl spaces. We seal with mastic and mechanical fasteners, not tape that fails in heat, and we pressure-test afterward to verify the seal. This is often the right follow-up to cleaning in older flexible-duct systems where gaps have opened. Duct Sealing in San Marcos includes before-and-after leakage numbers in writing.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Marcos
We stock parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman, and we service all major HVAC brands found in local tract builds. Most filter replacements and register hardware are same-visit. our brands
Pricing for Air Duct Cleaning Company in San Marcos, TX
| Service | Typical range in San Marcos |
|---|---|
| Whole-home air duct cleaning (single system, up to 12 vents) | $350 – $550 |
| Whole-home air duct cleaning (larger home, 13 – 20 vents) | $500 – $750 |
| Dryer vent cleaning (standard through-wall run) | $120 – $180 |
| Dryer vent cleaning (extended or roof-termination run) | $180 – $250 |
| Duct sealing (single system, mastic + testing) | $400 – $650 |
| Duct sealing (multi-zone or complex layout) | $600 – $900 |
| Return-air intake deep cleaning (post-wildfire) | $150 – $250 add-on |
| Register and boot detail cleaning | $75 – $125 add-on |
| HVAC filter upgrade (Honeywell / Aprilaire media) | $45 – $85 per filter |
| System inspection with written report | $85 – $125 |
Prices push higher in San Marcos when wildfire ash has saturated the return system, requiring extended negative-air cycling, or when duct runs follow the complex attic routing common in 1990s two-story tracts. Whatever the scope, your technician writes the price before touching the equipment, and that number does not move at the door.
Neighborhoods We Serve in San Marcos
We work across San Marcos from the original core to the newer master-planned edges, with crews dispatched from our Austin coordination office. Most appointments are scheduled within a few days, with routing that keeps drive time down for the full service area.
- San Elijo Hills
- Twin Oaks Valley
- Santa Fe Hills
- Discovery Hills
- Lake San Marcos
Service Area – Cities Near San Marcos
Our crews cover the full inland North County corridor and surrounding communities. We regularly schedule jobs in Kyle, TX, New Braunfels, TX, and Buda, TX, plus the hill-country areas around Canyon Lake, CA. Dispatch and scheduling are coordinated from our Austin office; the technician who arrives at your San Marcos home is a local crew member, not a driver from out of market.
Serving San Marcos, TX - Our Local Coverage Area
We’re based in the San Marcos area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning Company in San Marcos
No permit is required for routine air duct cleaning or dryer vent cleaning in San Marcos. Duct sealing that involves modifying or replacing ductwork may need a permit if it changes the system’s design; we handle the paperwork when that’s the case and include it in the written price. Call (361) 326-5060 if you’re unsure about your specific job.
We prioritize post-wildfire calls from canyon-adjacent areas like San Elijo Hills and ridgeline homes where ash infiltration is heaviest. Phones are answered by a live person 24/7, and we schedule these as quickly as routing allows. We do not promise same-day dispatch, but we do keep a standby list for red-flag events.
Most San Marcos HOAs for master-planned communities require 24 – 48 hour notice for service vehicles but do not restrict the work itself. We carry general liability and workers compensation documentation that most property managers request, and we can provide a certificate of insurance in advance if your HOA requires it. Mention your HOA when you call (361) 326-5060 and we’ll note it on the work order.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Marcos Customers Say
"Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L.