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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Before
AfterAir Duct Cleaning Company in St. Helena, CA
Air duct cleaning in St. Helena runs $350 – $650 for a typical single-system home, with most jobs scheduled within a week and completed in one day. What sets St. Helena apart is its mix of century-old downtown Victorians with original redwood framing and unlined crawlspaces, alongside modern wine-country estates with complex zoned HVAC systems. Both face the same challenge: Napa Valley’s hot, dry summers pull vineyard dust and oak pollen deep into ductwork, while winter moisture finds its way into poorly sealed systems. We’re Hollis Air Duct Cleaning, and we’ve built our St. Helena work around these specific conditions. Call us at (361) 326-5060 for a free estimate.
Why St. Helena Homes Are Different
St. Helena sits at the narrow waist of Napa Valley, surrounded by vineyards on three sides and oak woodlands on the fourth. That geography means every HVAC system here fights a constant battle with fine agricultural dust, particularly during harvest season when equipment runs day and night. In downtown St. Helena, many older homes have ductwork routed through uninsulated attics that hit 140°F in July and August. That heat degrades duct tape and flex duct fast; we see a spike in calls right after harvest, when homeowners finally switch on AC and find weak airflow or hot spots.
The housing stock splits cleanly. North of Main Street, Craftsman and Victorian homes built between 1890 and 1920 still stand on original foundations, often with redwood floor joists and crawlspaces that were never sealed to modern standards. South and east, newer luxury compounds and winery guest houses run multi-zone systems with electronic dampers and HEPA filtration. Both need cleaning, but the approach differs: older systems often require careful navigation of fragile original ducts, while newer ones demand equipment that won’t damage sensitive electronic components.
Seasonal short-term rentals add another layer. Many St. Helena properties now operate as wine-tourism destinations, with HVAC systems cycling through dozens of guests per month. That turnover accelerates dust accumulation and makes regular duct maintenance a operational necessity, not a luxury.
Our Main St. Helena Services
Most St. Helena homeowners call us for one of three jobs. Each has its own page with full detail, but here’s what the work looks like locally.
Air Duct Cleaning in St. Helena
We clean residential duct systems using a rotary brush system from Rotobrush combined with negative-air containment from Nikro. In St. Helena’s older homes, we often find decades of compacted dust in original galvanized ducts, sometimes with degraded fiberglass lining that needs careful handling. For newer estates, we adjust pressure settings to protect electronic zone dampers. Every job starts with a written price and ends with before-and-after photos of your own ducts. Air Duct Cleaning in St. Helena
Dryer Vent Cleaning in St. Helena
Dryer vent cleaning here addresses a specific fire risk: lint accumulation in long vent runs, common in both historic homes with retrofitted laundry closets and modern estates with centrally located utility rooms. We clear the full run from dryer to termination, check backdraft dampers, and verify airflow with a meter. In St. Helena’s wildland-urban interface zones, this matters; ember intrusion through compromised vents is a documented ignition source. Dryer Vent Cleaning in St. Helena
Duct Sealing in St. Helena
Duct sealing uses mastic compound and specialized tape to close leaks in supply and return plenums. In St. Helena, we seal a lot of attic ductwork that was never properly joined, particularly in homes where flex duct was added during renovations. Sealed ducts drop energy bills and stop attic dust from being pulled into living spaces. We price by system, not by linear foot, and guarantee the seal for one year. Duct Sealing in St. Helena
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 St. Helena
We stock parts and filters for Honeywell, Aprilaire, and Guardsman systems, plus universal-fit media for Rotobrush and Nikro equipment. Most filter replacements and minor repairs ship to our Los Angeles office and reach St. Helena within two business days. See our brands for the full list.
Pricing for Air Duct Cleaning Company in St. Helena, CA
| Service | Typical range in St. Helena |
|---|---|
| Single-system air duct cleaning (up to 12 vents) | $350 – $650 |
| Additional HVAC system (same visit) | $250 – $450 |
| Dryer vent cleaning (standard run) | $120 – $200 |
| Dryer vent cleaning (long run or rooftop termination) | $180 – $280 |
| Duct sealing (single system) | $800 – $1,500 |
| Duct sealing (multi-zone system) | $1,200 – $2,200 |
| Sanitizing treatment (per system) | $75 – $150 |
| Filter replacement (standard 1″ – 4″) | $15 – $45 per filter |
| Camera inspection of ductwork | $150 – $250 |
| Return duct cleaning (additional) | $100 – $200 |
What pushes St. Helena prices toward the high end: inaccessible attics in historic homes, multi-zone systems with electronic dampers requiring extra care, and properties requiring coordination with rental management companies. What keeps them predictable: our written price before any work starts, with no per-vent add-ons or surprise charges once the technician is inside.
Neighborhoods We Serve in St. Helena
We work across the full St. Helena zip code area, from downtown to the vineyard edges. Scheduling is coordinated from our Los Angeles office, with crews dispatched to St. Helena for booked appointments. Most neighborhoods are reachable within the same service window.
- Downtown St. Helena (historic core, Main Street corridor)
- Deer Park (residential area, mixed housing ages)
- White Sulphur Springs (estate properties, larger lots)
- South St. Helena (newer construction, family homes)
- Howell Mountain approach (vineyard-adjacent properties)
Service Area – Cities Near St. Helena
While St. Helena is our focus on this page, our crews also serve the broader Northern California and Southern California corridor. We regularly field calls from Los Angeles, CA, San Diego, CA, San Jose, CA, and San Francisco, CA. Dispatch and scheduling for all locations run through our Los Angeles office to keep routing efficient.
Serving St. Helena, CA - Our Local Coverage Area
We’re based in the St. Helena 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 St. Helena
No permit is required for standard air duct cleaning or dryer vent cleaning in St. Helena. Duct sealing that involves modifying or replacing duct sections may trigger a minor building permit through the City of St. Helena; we handle the paperwork and include permit costs in our written price when applicable. Call (361) 326-5060 to confirm for your specific job.
Most St. Helena appointments are available within 5 – 10 business days, with some flexibility for rental properties coordinating around guest stays. We do not promise same-day service; duct cleaning is a scheduled job that requires proper setup and time to complete without rushing. Call (361) 326-5060 for current availability.
Yes. We regularly coordinate with rental management companies and homeowner associations for wine-country properties, particularly for seasonal turnover cleaning. We provide written scope and pricing upfront, photo documentation after completion, and direct billing when arranged in advance. Call (361) 326-5060 to set up account billing.
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 St. Helena Customers Say
"No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O.