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
AfterFast, Reliable Air Duct Cleaning Across San Marcos
Air duct cleaning in San Marcos, TX typically runs $350-$650 for a whole-home system, with most residential jobs completed in a single morning. We’re Morton’s Air Duct Cleaning, and our crews work San Marcos neighborhoods from San Elijo Hills to Twin Oaks Valley Ranch regularly, dispatching from our Austin coordination office to keep appointment windows tight. Call (323) 918-4345 for a free written estimate before any work starts.
San Marcos grew fast between 1985 and 2010, and that building boom left thousands of tract homes with flex ductwork now hitting 20-30 years old. Whether you bought new construction near Rancho Coronado or you’re maintaining a 1998 build in the hills, your ducts have seen serious mileage. The inland valley here funnels Santa Ana winds straight through HVAC intakes, loading systems with Mojave desert dust and, after fire seasons, wildfire ash that coastal cities like Carlsbad simply don’t face. That’s why local expertise matters: a technician who knows San Marcos understands what they’re pulling from your plenum before they open it.
Why Morton’s Air Duct Cleaning Is San Marcos’s Preferred Air Duct Cleaning Company
We’ve been part of the Cedarwell family since 2005, and our reputation in San Marcos is built on showing up prepared for what this specific geography throws at duct systems. Paul Adeyemi leads our operation with a straightforward standard: every customer gets a written price before we touch anything, and every job is backed by our 365-Day Done Right Promise.
San Marcos customers tell us the same thing repeatedly. They chose Morton’s because our technicians arrive in uniform, background-checked, with shoe covers and drop cloths already on. We work around nap schedules when there’s a toddler down the hall. We ask where the dog prefers to sleep so we don’t disrupt that corner. And we leave a photo of the clean-up before we go, so you see exactly what was done.
Our response time to San Marcos is coordinated through our Austin office, with scheduling built around your availability, not ours. No voicemail loops. A live person answers the phone 24/7, and we don’t book you three weeks out because we know dust doesn’t wait on convenience.
Local knowledge is what separates a useful cleaning from a superficial one. We know the 92069 and 92078 zip codes cover different eras of construction with different duct materials. We know Santa Ana events spike call volume every October through March. And we know that after the 2017 Lilac Fire, homeowners in the wildland-urban interface needed more than standard seasonal maintenance. That context changes how we approach your system.
Commercial Air Duct Cleaning in San Marcos
Commercial Air Duct Cleaning in San Marcos covers office parks near Rancho Santa Fe Road, retail spaces along San Marcos Boulevard, and multi-tenant buildings throughout the 78 corridor. These systems run harder and longer than residential units, often with rooftop package units pulling the same valley dust through larger-diameter ductwork that homeowners never see. We use Nikro and Abatement Technologies commercial-grade negative-air machines on these jobs, sized to the square footage and occupancy load of your building. Typical commercial duct cleaning in San Marcos runs $800-$2,400 depending on system complexity and access.
Restaurant and Food-Service Systems
Grease-laden vapors from kitchen hoods migrate into shared duct trunks in San Marcos strip centers, creating fire hazards and odor complaints from neighboring tenants. We clean supply and return trunks separately, documenting with photo evidence for health department compliance.
Office and Medical Tenant Improvements
San Marcos office buildings from the 2000s boom often show patched-together ductwork after multiple tenant changes. Our video inspection locates disconnected flex runs and debris accumulation points before we quote, so your price reflects actual conditions, not guesswork.
Air Duct Cleaning Services in San Marcos
Air Duct Cleaning Services in San Marcos from Morton’s cover the full system: supply ducts, return ducts, trunk lines, plenums, and the air handler cabinet. We don’t clean half a system and call it done. Our process uses Rotobrush contact cleaning with concurrent negative pressure and HEPA filtration, which means dislodged debris is captured at the source, not blown through your house. A typical residential full-system cleaning in San Marcos runs $350-$650, with video inspection and dryer vent add-ons priced separately.
New Construction and Post-Remedy Cleaning
Builders rarely clean ducts after construction, and San Marcos’s rapid growth means plenty of homes were handed over with drywall dust, wood scraps, and insulation fragments still inside. We find this in new builds near Twin Oaks Valley and established neighborhoods alike. That “new house smell” is often off-gassing from debris that should have been removed before you moved in.
Seasonal Santa Ana Preparation
Before October wind events, we recommend inspection of return-air plenums in San Elijo Hills and hillside homes. The ochre-tan dust we pull from these systems during peak season is unmistakable, and catching torn flex liners early prevents that debris from circulating through your living space all winter.
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.
Trusted Brands We Service in San Marcos
Our trucks carry professional equipment from Rotobrush, Nikro, Aprilaire, and Abatement Technologies, not rental-grade machines that lose suction halfway through a job. For San Marcos customers, this means we can source replacement components for Honeywell and Aprilaire media filters locally when needed, and our Guardsman-protected tools arrive calibrated for the specific duct materials common in 1990s-2000s tract construction. We don’t guess at compatibility. We match the equipment to your system, and if your home uses an Aprilaire whole-house purifier or a Honeywell electronic air cleaner, we clean those units as part of the full-system service rather than treating them as afterthoughts. Fast turnaround matters here because when Santa Ana winds are forecast, you don’t want to wait a week for a filter housing that should be in stock.
Common Air Duct Cleaning Problems We See in San Marcos Homes
- Construction debris in “new” homes. Builders in San Marcos’s 2000s boom rarely cleaned ducts before final walkthrough. Drywall dust cakes inside flex runs, and homeowners breathe it for years assuming it’s normal new-house settling.
- Santa Ana wind infiltration through compromised returns. The valley geography here amplifies offshore winds, forcing fine Mojave dust past loose connections even when windows stay closed. We find this concentrated in return plenums facing the windward side of the house.
- Torn flex liners in 20-30-year-old tract ductwork. Original flex duct in Rancho Coronado and San Elijo Hills builds is now past its reliable lifespan. Tears near air handlers bypass filters entirely, pulling unfiltered attic or crawlspace air directly into circulation.
- Wildfire ash residue in wildland-urban interface homes. After events like the 2017 Lilac Fire, homes in Twin Oaks Valley and hillside neighborhoods accumulated charred chaparral particulate that standard filters can’t capture. This requires source removal, not just filter changes.
Pricing for Air Duct Cleaning in San Marcos, TX
Whole-home residential air duct cleaning in San Marcos typically costs $350-$650 for a single system, with most homes in the $450-$550 range. Commercial systems start around $800 and scale with square footage and access complexity. Dryer vent cleaning runs $120-$180 when bundled with duct service, or $150-$220 standalone.
What moves you within these ranges? System size matters: a 2,000-square-foot tract home with one air handler costs less than a 4,000-square-foot home with dual zones. Access matters: attic-mounted units in San Elijo Hills hillside builds take longer than closet-mounted systems. And condition matters: heavy construction debris or wildfire ash residue requires more contact time than routine seasonal dust.
We give you one flat price per system, agreed in writing before we start. No per-vent pricing. No surprise add-ons once the van is in your driveway. Every estimate is free, and we’ll walk you through exactly what that price covers. Call (323) 918-4345 to schedule yours.
We Also Serve Cities Near San Marcos
Our crews cover the full I-35 corridor and Hill Country edge, including San Marcos plus Kyle, New Braunfels, Buda, and Canyon Lake. If you’re in one of these communities and your ducts need attention, we apply the same written-price-first standard and the same Cedarwell Care Promise on every single visit. Scheduling is coordinated from our Austin office to keep routes efficient and arrival times predictable.
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 in San Marcos
Yes, very likely. Builders rarely clean ductwork after construction, and we’ve found drywall dust, wood scraps, and insulation fragments in San Marcos homes still under warranty. That debris circulates through your HVAC from day one, and many homeowners notice less dust on surfaces within a week of professional cleaning. Call (323) 918-4345 for a free inspection.
The inland valley position funnels hot, dry 30-60 mph winds directly into HVAC intakes, loading systems with fine Mojave desert dust that coastal cities don’t experience. During peak events from October through March, return plenums in wind-facing homes accumulate visible ochre-tan debris that standard filters can’t stop. Professional cleaning with HEPA-contained equipment removes this buildup before it circulates through your living space.
Dust resetting on surfaces within days of cleaning, uneven airflow between rooms, musty odors when the system kicks on, or visible debris around vent registers all point to duct contamination. In San Marcos’s 20-30-year-old flex duct systems, we also look for torn liners near air handlers and loose connections that bypass filtration entirely. Our video inspection shows you exactly what’s inside before we quote.
Yes. Our Air Duct Cleaning team handles office buildings, retail spaces, restaurants, and multi-tenant properties throughout San Marcos, using commercial-grade Nikro and Abatement Technologies equipment sized to your system’s demands. We work after hours when needed, document with photo evidence, and provide written pricing before any work begins.
Every 3-5 years for typical residential systems, but San Marcos’s specific conditions often warrant the shorter end of that range. The Santa Ana wind loading, wildfire ash exposure in hillside neighborhoods, and construction debris in newer builds all accelerate accumulation. Homes with pets, recent remodeling, or occupants with respiratory sensitivity may need more frequent service. We’ll assess your actual conditions and recommend honestly, not automatically.
Written by Paul Adeyemi, Owner at Morton’s Air Duct Cleaning, serving San Marcos since 2005.