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.
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AfterFast, Reliable HVAC Cleaning Across San Anselmo
HVAC cleaning in San Anselmo means pulling years of accumulated dust, pet hair, and debris out of the system that moves air through your house every day. Most standard cleanings for a typical San Anselmo home run $450 – $850 per system, and we give you one flat price before any work starts. No per-vent add-ons. No surprise line items after the van pulls up. If you live in San Anselmo and your registers puff dust when the heat kicks on, or the air smells musty, call (737) 727-2314 and we’ll walk you through exactly what your system needs.
Why Cardinal Air Duct Cleaning Is San Anselmo’s Preferred HVAC Cleaning Company
San Anselmo homeowners call us because we operate differently from the duct cleaners who quote a teaser price and then inflate it once they’re inside. Every job starts with a written price per system, agreed to before a single duct is touched. That price does not change at the door. Our technicians are background-checked, arrive in uniform, and you’ll know their name before they show up. They run Rotobrush agitation tools and Nikro HEPA-filtered negative-pressure vacuums, not a shop vac bolted to a van.
We’re part of the Relay Home Co. family, founded 2005, and we’re held to The Relay Visibility Guarantee. That means every booking comes with a live trackable arrival time, before-and-after photos of your own ducts, and a digital invoice you can pay from your phone. Omar Haddad leads our team, and if the work isn’t right within 365 days, we come back and make it right. That’s the 365-Day Done Right Promise, and it applies to every job without exception. For more on how we work across Marin County, see our HVAC Cleaning team’s full process.
Response time to San Anselmo is straightforward: dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve San Anselmo locally. You won’t wait a week for a callback. A live person answers the phone 24/7, which matters when you’re trying to sort out whether your AC coil is making the house musty or something else is going on.
AC Cleaning in San Anselmo
AC cleaning in San Anselmo is a targeted service for the cooling side of your system, and it’s the one that makes the biggest difference when summer hits the Ross Valley. The job involves pulling the access panel off the air handler, cleaning the evaporator coil, blower wheel, condensate pan, and drain line, and treating the coil to slow microbial growth during the hot months. A standard AC cleaning in San Anselmo runs $250 – $450 depending on accessibility and coil condition.
When San Anselmo homes need it
San Anselmo sits in a valley with cool, damp winters and hot, dry summers. That swing means your AC coil alternately gets blasted with condensation from winter heating cycles and caked with dust from summer cooling runs. If you notice weak airflow from your registers in July, or the AC runs longer than it used to before cooling the house, the coil is probably the culprit. Homes off Butterfield Road and up in Sleepy Hollow see heavier pollen loads in spring, which coats coils faster.
What influences cost
Coil access is the main variable. Some San Anselmo air handlers are in tight hallway closets with the coil buried behind the blower. Others sit in accessible attics or garages. Either way, you’ll get a written price before we open the panel, and that price won’t change at the door.
Evaporator Coil Cleaning in San Anselmo
Evaporator coil cleaning in San Anselmo is the deeper version of AC cleaning, focused entirely on the coil that absorbs heat from your indoor air. In most San Anselmo homes, this coil sits inside the air handler, and over two or three years it gets matted with dust, pet hair, and a film of microbial residue from condensation. A dedicated evaporator coil cleaning here runs $180 – $350. If it’s bundled with a full duct cleaning, the combined price lands between $550 and $900 for a typical single-system home.
Why the coil gets dirty here
Older homes in San Anselmo, especially the Craftsman and ranch houses built before 1960 around the Seminary area and along Sir Francis Drake Boulevard, frequently run undersized returns. That pulls more unfiltered air across the coil than the system was designed for, which means more debris sticks to the wet coil surface. Add in crawlspace air intrusion from leaky return ducts, and the coil becomes a dirt magnet.
The fix and the flat price
We clean the coil with professional-grade equipment designed for the job, not a hardware-store spray bottle. Then we treat the coil to resist mold and odor during Marin’s damp winter months. Before we start, you’ll have one flat price for the coil cleaning. If we find a torn return duct in the crawlspace feeding dirty air into the coil, we’ll show you the photo and quote the repair separately before doing anything.
Trusted Brands We Service in San Anselmo
San Anselmo homes carry a mix of equipment brands, and we stock parts and service knowledge for the major names we encounter most: Carrier, Trane, Lennox, Rheem, Goodman, and York, among others. For filtration and air quality, we work with Aprilaire and Guardsman products, and our field equipment includes Rotobrush and Nikro systems alongside Abatement Technologies containment units when a job requires source removal. If your air handler is a 1990s-era unit off a quiet street in the flats, or a newer high-efficiency system up in the hills, we know the access points, the coil types, and the weak spots these systems develop in Marin’s climate.
Common HVAC Cleaning Problems We See in San Anselmo Homes
- Dust and debris bonded to old duct walls. Many San Anselmo homes built before 1960 still have original or lightly modified galvanized ducts. Decades of heating and cooling have baked dust onto the metal, and a vacuum alone won’t budge it. You need agitation tools to break the bond before extraction.
- Return ducts pulling from vented crawlspaces. A lot of older houses here have return runs through crawlspaces under the house. A torn flex connector or separated joint pulls soil, moisture, and whatever lives under the house straight into your air handler. No amount of indoor duct cleaning fixes that until the connection is sealed.
- Evaporator coils matted with pet hair and dust. San Anselmo households love their dogs and cats, and that fur ends up on the coil. Houses with long-haired pets and older filtration see coils completely matted within two years, which starves airflow and drives up cooling costs.
- Mold and musty odors from damp winter condensation. San Anselmo’s cool, damp winters mean condensation sits on the coil for months. When the furnace kicks on, that moisture mixes with accumulated dust, and the result is the musty smell homeowners report from November through March.
Pricing for HVAC Cleaning in San Anselmo, CA
Here’s the honest breakdown for San Anselmo specifically. A full HVAC duct cleaning for a single-system home runs $450 – $850. Evaporator coil cleaning alone runs $180 – $350. AC cleaning as a focused service runs $250 – $450. Blower cleaning runs $120 – $250. If you bundle coil cleaning with full duct cleaning, most San Anselmo homes land between $550 and $900. What moves the price: the number of systems, accessibility of the air handler, how long it’s been since the last cleaning, and whether your return ductwork needs sealing work in the crawlspace. You’ll get a written price for your exact system before any work starts, and that number is the number you pay.
Some companies quote per vent, like $29 per register, then add on charges for the air handler, the return side, the trunk line, and the coil. The final bill is three times the teaser. We don’t play that game with San Anselmo homeowners. One flat price per system. Agreed in writing before we start. For details on our approach across the service area, see HVAC Cleaning in San Anselmo.
We Also Serve Cities Near San Anselmo
Our crews cover the wider Ross Valley and central Marin, including Fairfax, Kentfield, San Rafael, and Larkspur. If you’re just over the hill or down the road and need the same flat-price, photo-documented HVAC cleaning, call us and we’ll schedule you the same way.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo 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 HVAC Cleaning in San Anselmo
Most San Anselmo homes need full duct cleaning every 3 to 5 years. Homes with pets, recent renovations, or older ducts with unsealed crawlspace connections may need it every 2 to 3 years. If you’ve never had it done and your house predates 1980, you’re overdue. Call (737) 727-2314 and we’ll help you figure out whether your system actually needs cleaning or if you can wait.
Per-vent pricing lets companies quote a low number and then add charges for the air handler, returns, and trunk lines once they’re inside your home. We quote one flat price for the whole system before any work starts. That price does not change at the door. It’s the only way San Anselmo homeowners can actually compare quotes honestly.
We set up negative-pressure extraction with HEPA filtration, which means the loosened debris goes straight into the vacuum and not back into your living room. We use agitation tools on supply and return ducts, clean the blower and coil, and seal any return duct connections we find leaking in the crawlspace. You get before-and-after photos of your own ducts when the job is done. Call (737) 727-2314 for a free estimate on your system.
No. HVAC cleaning is a scheduled job and doing it properly takes time. We book San Anselmo appointments with a live trackable arrival window, and we’ll never promise a speed we can’t deliver. A live person answers 24/7 at (737) 727-2314, and we’ll get you on the schedule for the soonest available slot.
Yes, and we recommend it. Bundling coil cleaning with full duct cleaning in San Anselmo typically runs $550 – $900 for a single-system home. If we’re already in the air handler for the ducts, cleaning the coil at the same time saves you a second visit and a second setup. Call (737) 727-2314 for a flat price on the full package.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving San Anselmo and Marin County with The Relay Visibility Guarantee.