Air Duct Cleaning in San Marcos - One Flat Price, Before-and-After Photos

Fast, Reliable Air Duct Cleaning Across San Marcos

Air duct cleaning in San Marcos typically runs $350 – $650 for a full residential system, and every Hollis job starts with a written price before we touch your HVAC. We’re the Air Duct Cleaning crew San Marcos homeowners call when they want the work done by the book, not by the hour. Our dispatch team coordinates from our Austin office, but our technicians live and work in the San Marcos area, so we know the difference between a 1980s split-level near the original downtown core and a 2005 tract home off the SR-78 corridor.

Call (361) 326-5060

San Marcos sits in a wildfire-prone inland North County corridor, so air duct cleaning here 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. No coastal city to the west deals with that ash intrusion pattern, and no other inland city combines it with San Marcos’ mix of 1980s-2000s master-planned tract housing and steep canyon-edge lots. We see this firsthand in neighborhoods near San Elijo, where return registers stain with ash long before the filter looks dirty.

Call (361) 326-5060 for a free estimate. We answer live, 24 hours a day.

Why Hollis Air Duct Cleaning Is San Marcos’s Preferred Air Duct Cleaning Company

We’ve been part of the Garrison Partners family since 2004, and our San Marcos customers know what The Garrison Standard means: arrive inside the window, price it in writing, finish by the book, leave the site clean. Roy Castellanos built this operation on the principle that a homeowner should never have to negotiate with a technician in their own living room.

Our 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. That’s not a satisfaction guarantee, it’s a repair guarantee, and we put it on paper before we start.

Every technician is background-checked and uniformed. You know who’s walking into your home before they arrive. And when you call (361) 326-5060, a live person answers, no voicemail loop, no callback queue, no waiting until Monday.

We serve San Marcos with the same equipment commercial crews use: Rotobrush rotary brush systems, Nikro negative-air machines, and filtration from Honeywell, Aprilaire, and Guardsman. Professional-grade tools, not hardware-store gear.

HVAC Duct Cleaning in San Marcos

HVAC Duct Cleaning in San Marcos means source removal from your entire forced-air system: supply trunks, return trunks, branch lines, and the air handler cabinet. For homes that also need Duct Sealing in San Marcos, we can assess that during the same visit. In this city, the job often starts with construction debris that never should have been left behind. San Marcos tract homes built from the 1980s through the 2000s often use flexible duct runs and tightly sealed plenums that hide drywall dust and construction debris in the first few years after handover, so a brand-new house can need source removal before its first filter change. After Santa Ana wind events and wildfire smoke in the hills east of the 78 corridor, canyon-edge neighborhoods near San Elijo see ash staining return registers long before the filter appears dirty. A typical full HVAC duct cleaning in San Marcos runs $350 – $650 for residential systems, with commercial jobs quoted on-site.

Negative-Air Source Removal

We connect a Nikro negative-air machine to your trunk line, creating suction that pulls loosened debris toward the collection unit while our Rotobrush agitation tools scrub the duct walls. On tightly sealed tract systems common in San Marcos, this method prevents debris from blowing back into your living space during cleaning.

Camera Verification

We run a video inspection before and after. You see what we see: drywall dust, ash residue, or construction debris. The camera doesn’t lie, and the before-and-after footage belongs to you.

Vent Cleaning in San Marcos

Vent Cleaning in San Marcos targets the supply and return registers you see on your walls, floors, and ceilings, plus the short boot lines behind them. This is where ash from Santa Ana events first shows itself, especially in homes near the canyon ridgelines east of the 78. Homeowners often notice gray film on the grille louvers or a puff of fine dust when the blower cycles on. In newer tract homes, we find paint overspray and drywall mud caked on the boot walls, left by builders who never cleaned before closing. Vent cleaning alone runs $150 – $280 in San Marcos, though we typically bundle it with full system work for better value.

Register and Boot Detailing

We remove each grille, clean the boot cavity with HEPA-contained tools, and wash the register itself before reinstalling. On 1990s San Marcos homes with rectangular metal boots, we check for rust where condensation has collected, a common issue in the original core’s older single-story stock.

Return Intake Cleaning

Return vents pull air back to the handler, so they’re the first stop for wildfire ash and road dust. We clean the grille, the filter rack, and the first few feet of trunk line, where debris concentrates before reaching your filter.

Trusted Brands We Service in San Marcos

We stock parts and filtration products from Honeywell, Aprilaire, and Guardsman for San Marcos customers, so replacements don’t wait on shipping. Our Rotobrush and Nikro equipment handles the agitation and negative-air work, while our Abatement Technologies HEPA filtration captures particles down to 0.3 microns. When a San Marcos homeowner needs a media filter upgrade after a wildfire season, we can source Aprilaire MERV 16 cabinets or Honeywell electronic air cleaners without a two-week delay. Fast turnaround matters here because the Santa Ana wind season doesn’t wait on warehouse logistics.

Common Air Duct Cleaning Problems We See in San Marcos Homes

• Construction debris in new tract homes. Builders hand over new San Marcos tract homes with drywall dust and construction debris still coating the inside of flexible duct runs, and homeowners assume a new house doesn’t need cleaning. We find the worst buildup in homes two to five years old, after the blower has had time to redistribute loose material through the system.
• Wildfire ash intrusion after Santa Ana events. After Santa Ana wind events and wildfire smoke east of the 78, ash and fine soot get pulled into return-air intakes in canyon-adjacent neighborhoods like those near San Elijo, but standard 1-inch filters with a low MERV rating miss it. The ash settles in return trunks and recirculates until source removal pulls it out.
• Incomplete cleaning on sealed systems. Contractors skip source removal and negative pressure on tightly sealed 1980s-2000s tract systems, so debris just recirculates through the supply and return ducts instead of being captured at the air handler. Without proper containment, stirring up dust makes the problem worse.
• Dry climate keeping debris airborne. San Marcos’s hot, dry summers let dust and construction debris stay loose and recirculate rather than settle out. Your blower works harder, your filter loads faster, and your indoor air never gets a break from particulate.

Pricing for Air Duct Cleaning in San Marcos, TX

We Also Serve Cities Near San Marcos

Our crews work throughout the corridor, including San Marcos plus Kyle, New Braunfels, Buda, and Canyon Lake. Same equipment, same written pricing, same 365-Day Done Right Promise in every zip code we cover.

FAQs About Air Duct Cleaning in San Marcos