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 in Danville, CA
Dryer vent cleaning in Danville is a job shaped by the San Ramon Valley’s inland heat and the housing stock that came with it. Homes in Blackhawk, Sycamore Valley, and the older custom builds near Diablo Road run their HVAC systems hard through summers that routinely cross 95°F, which means dryer vents and ductwork both load up faster than they do in coastal towns twenty miles west. If you need pricing, the honest range for a full dryer vent cleaning here runs $130-$220, depending on vent length and access. Call (806) 606-6902 and we’ll give you a written price before any work starts.
Why Danville Homes Are Different
Danville sits in a valley that traps heat. Summer afternoons here stay above 95°F for weeks at a stretch, and central AC is not optional the way it is in San Francisco or Berkeley. That constant runtime means return ducts pull in dust, pet dander, and whatever the Diablo winds push through door seals every single day. By August, we routinely photograph return duct interiors here with a visible gray film across the plenum floor, coil face, and first few feet of trunk line.
The housing stock compounds it. A large share of Danville homes were built between 1980 and 1999: expansive custom and tract builds in Blackhawk, Sycamore Valley, and along Green Valley Road. These are multi-zone systems with long flex runs snaking through unconditioned attics. Many were installed with the filtration standards of that era, meaning basic fiberglass panels that catch maybe 25 percent of what passes through. The ducts themselves are now 25 to 40 years old, and age shows up as separated joints, sagging flex, and enough accumulated debris to make a second cleaning more involved than the first.
Then there’s fire season. The same valley geography that holds heat also holds smoke. During Northern California fire events, particulate settles into Danville’s bowl-shaped topography and lingers for days. HVAC systems running to keep homes comfortable pull that fine smoke straight into return ducts. Homes without MERV-11 or better filtration end up with smoke residue on coils and a stale, acrid note from registers for months afterward. Fall Diablo wind events load returns with fine dust and vegetation debris in a single afternoon. We see unusually heavy return-duct loading in Danville homes that lack upgraded filtration, and that’s not a general statement. We photograph it.
Our Main Danville Services
Two services get the most calls from Danville homeowners: full-system air duct cleaning and the deeper HVAC cleaning that includes coils, blowers, and housings. Both are covered by the same written-price rule, and both end with a documented photo record of every duct run.
Air Duct Cleaning in Danville
This is the whole-system cleaning: every return, supply run, plenum, and register. In Danville, the job typically takes longer than in smaller Bay Area cities because the square footage is larger and the branching layouts in Blackhawk and Sycamore Valley homes are more complex. We run negative-pressure extraction with Rotobrush and Nikro equipment, agitate debris loose inside each run, and photograph the interior before and after. The 365-Day Done Right Promise backs every job in writing. See the full scope on our Air Duct Cleaning in Danville page.
HVAC Cleaning in Danville
HVAC cleaning goes beyond the ducts to the mechanical components that move the air: evaporator coils, blower wheels, housings, and condensate pans. In Danville, the AC runtime means coils here collect a compressed layer of dust and smoke particulate that reduces heat exchange and drives up cooling costs. We clean those components with professional-grade equipment from Abatement Technologies and Honeywell, then document every step. Details on our HVAC Cleaning in Danville page.
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.
BeforeAfterDryer Vent Cleaning in Danville
Dryer vent cleaning in Danville is a fire-prevention job more than a maintenance chore, and the local housing stock makes it more involved than average. Many Blackhawk and Sycamore Valley homes have dryer vents that run 15 to 30 feet through walls or between floors before they reach the exterior, and every foot of that run is a place lint can accumulate. Add in the valley’s dust load and the amount of laundry a Danville household generates, and we regularly pull 3 to 5 pounds of packed lint from vents that have gone a few years without service. That’s not a guess; it’s what the camera shows before we touch anything. Our full Dryer Vent Cleaning process starts with a written price and ends with a photo record of the vent interior.
Vent Cleaning
Signs you need it
Clothes take two or three cycles to dry, the dryer exterior gets hotter than normal, or you smell a damp, musty odor from the drum.
What it costs in Danville
Expect $130-$220 for a standard residential dryer vent cleaning in Danville, with longer or multi-story runs at the upper end.
How we do it
We disconnect the dryer, run a rotary brush and HEPA vacuum through the full vent run from both ends, then photograph the interior before and after.
Lint Removal
Signs you need it
Visible lint accumulates around the exterior vent hood, or the dryer has not been cleaned in over a year while drying full loads regularly.
What it costs in Danville
Lint removal as a focused job without a full vent cleaning runs $90-$150, depending on the amount of blockage and vent accessibility.
How we do it
We access the vent, extract packed lint with professional negative-pressure equipment, and verify the full run is clear with a camera inspection.
Vent Rerouting
Signs you need it
The current vent path is longer than 25 feet, includes too many elbows, or terminates somewhere unsafe like an attic or crawlspace.
What it costs in Danville
Rerouting a dryer vent in Danville typically lands between $400 and $850, with specific pricing determined by path length, wall type, and access.
How we do it
We map the existing run, propose a shorter compliant path, remove old vent sections, install rigid metal duct, and seal every joint before testing airflow.
Bird Guard Installation
Signs you need it
You have heard or seen birds near the dryer vent hood, or the exterior opening shows nesting material around the flap.
What it costs in Danville
Adding a bird guard to an existing dryer vent costs $85-$160 in Danville, including the guard and mounting.
How we do it
We inspect the hood, remove any nesting material, install a louvered metal guard, and confirm the flap still opens properly under airflow.
What Dryer Vent Cleaning Costs in Danville
| Item | Typical range in Danville |
|---|---|
| Basic dryer vent inspection | $75-$120 |
| Standard vent cleaning (single family) | $130-$220 |
| Focused lint removal | $90-$150 |
How often should a dryer vent be cleaned in Danville?
Once a year for households running five or more loads per week. Danville’s dust load and long vent runs mean lint accumulates faster here than in coastal homes, so annual service is the honest baseline.
Does a clogged dryer vent really cause fires in Danville?
Yes. Dryer lint is combustible, and when it blocks airflow inside a long vent run through a Danville wall, the dryer’s heating element runs hotter than designed. Get a professional inspection rather than guessing. Call for a written quote.
Duct Repair & Sealing in Danville
Duct repair and sealing in Danville addresses a problem that most homeowners cannot see: conditioned air leaking into attics and wall cavities instead of reaching bedrooms. Homes built here in the 1980s and 1990s used a lot of flex duct, and after 25 to 40 years of San Ramon Valley heat cycles, that flex sags, separates at the collars, and develops splits along the inner liner. The result is rooms that never quite cool in summer and a system that runs longer than it should. Our Duct Repair & Sealing work is priced in writing before we start, and every repair is photographed as part of the job record.
Duct Sealing
Signs you need it
Some rooms run noticeably warmer than others, or your cooling bill climbs without any change in thermostat habits.
What it costs in Danville
Sealing accessible duct joints in a Danville home averages $300-$600, depending on the number of joints and reachable linear feet.
How we do it
We locate leaks with a pressure test or visual inspection, then apply mastic or foil tape to every accessible joint, collar, and plenum connection before documenting the work.
Flex Duct Repair
Signs you need it
Rooms fed by flex duct get weak airflow, or you can see sagging or crushed duct sections in the attic.
What it costs in Danville
Repairing or replacing a damaged flex duct run in Danville ranges from $250 to $550 per run, with full replacement runs higher if access is tight.
How we do it
We pull the damaged section, cut it back to sound material, install a proper connector or new flex run per code, seal both ends, and re-support the run.
Duct Insulation
Signs you need it
Ducts run through unconditioned attic space and room temperatures shift with the weather outside, or the existing insulation is torn or soaked.
What it costs in Danville
Re-insulating exposed ductwork in a Danville attic typically costs $500-$1,200, driven by linear footage and insulation R-value.
How we do it
We remove compromised insulation, wrap the duct in the correct R-value sleeve or batt, secure it, and seal all seams before photographing the finished run.
Mastic Sealant
Signs you need it
Visible gaps or crumbling tape at duct connections, or a blower-door pressure test shows significant duct leakage.
What it costs in Danville
Professional mastic sealing of duct connections in Danville runs $250-$500 for a typical single system, depending on access.
How we do it
We clean each joint, apply mastic with a brush to create a permanent flexible seal, allow proper curing, and verify the seal with a smoke pencil or pressure reading.
What Duct Repair & Sealing Costs in Danville
| Item | Typical range in Danville |
|---|---|
| Duct joint sealing (accessible) | $300-$600 |
| Flex duct repair (per run) | $250-$550 |
| Duct re-insulation (attic) | $500-$1,200 |
Is duct sealing worth it in a Danville house built in the 1990s?
Yes. A 1990s home in Danville has decades of flex-duct deterioration, and sealed ducts put more cooled air into rooms instead of the attic. Most customers notice more even room temperatures within days of a proper sealing job.
Do I need a permit for duct repair in Danville?
Most simple repair and sealing work needs no permit because we are not running new gas or electrical lines. Structural changes to walls or a full system replacement are different. Call us and we will tell you what applies to your specific home.
Air Quality & Sanitizing in Danville
Air quality and sanitizing in Danville is a response to what this valley does to indoor air: heat, stale air, and smoke particulate that settles into coils and ducts and stays there. Homes that run AC constantly during summer end up recirculating whatever is in the system, and during fire season the air coming out of registers carries a smell that vacuuming cannot fix. The work is not a mystery cure; it is cleaning the surfaces that air moves across and treating them so biological growth does not return in the humid conditions of an evaporator coil. Our Air Quality & Sanitizing service includes a documented photo record of the treated surfaces.
Odor Removal
Signs you need it
A stale or smoky smell comes from registers when the fan runs, particularly after fire season or in a recently purchased Danville home.
What it costs in Danville
Odor removal paired with duct and coil cleaning in Danville runs $350-$750, based on system size and the source of the odor.
How we do it
We locate the odor source, clean the affected surfaces, and apply an EPA-registered antimicrobial or odor counteractant inside the system with proper dwell time.
UV Light Installation
Signs you need it
A technician has documented biological growth on your evaporator coil, or your Danville home experiences recurring musty smells despite prior cleaning.
What it costs in Danville
A professional UV light installation in Danville runs $600-$1,200 per unit, including the fixture and proper mounting on the coil or return plenum.
How we do it
We install the UV lamp aimed directly at the coil or drain pan, wire it per manufacturer specs, and verify the bulb operates before handing you the documentation.
Mold Treatment
Signs you need it
Visible microbial growth on the coil, blower housing, or duct liner, which is common in Danville homes where AC condensation sits in a dark coil cabinet.
What it costs in Danville
Targeted mold treatment inside a duct system in Danville ranges from $450 to $900, depending on the surface area and severity.
How we do it
We clean the affected surfaces mechanically, then apply an EPA-registered antimicrobial with appropriate dwell time and containment, finishing with photographic documentation.
What Air Quality & Sanitizing Costs in Danville
| Item | Typical range in Danville |
|---|---|
| Odor removal (with duct cleaning) | $350-$750 |
| UV light installation (per unit) | $600-$1,200 |
| Mold treatment (targeted) | $450-$900 |
Does air quality sanitizing help with wildfire smoke in Danville?
It helps with the residue smoke leaves behind on coils and ducts, not with the smoke outside your home. The treatment removes accumulated particulate and odor from treated surfaces. For ongoing smoke, upgrade to a MERV-13 or better filter.
Is UV light installation worth the cost in Danville?
If your coil has documented biological growth, yes. The lamp controls regrowth in the damp coil environment that Danville summer humidity creates. If there is no documented growth, the better first step is cleaning and improved filtration.
Brands We Service in Danville
We work on systems built around Honeywell, Aprilaire, and Guardsman components, and our crews carry Rotobrush and Nikro equipment for extraction and agitation. See our brands for a full list of what we stock and service, including common Danville system parts available for immediate repair.
Pricing for Air Duct Cleaning in Danville, CA
| Service | Typical range in Danville |
|---|---|
| Dryer vent inspection | $75-$120 |
| Standard dryer vent cleaning | $130-$220 |
| Focused lint removal | $90-$150 |
| Duct joint sealing | $300-$600 |
| Flex duct repair (per run) | $250-$550 |
| Duct re-insulation | $500-$1,200 |
| Mastic sealing | $250-$500 |
| Odor removal with cleaning | $350-$750 |
| UV light installation | $600-$1,200 |
| Mold treatment | $450-$900 |
Prices in Danville run toward the upper end of these ranges when attics are tight, runs are long, or a home sits in a multi-level Blackhawk build with access complications. Every quote is written before work starts under Haven Standard Clause 1, so the number you see is the number you pay.
Neighborhoods We Serve in Danville
We work across Danville’s residential areas, from the gated streets of Blackhawk to the Sycamore Valley subdivisions and the older custom builds near Diablo Road. Most Danville jobs are scheduled within two to three business days, and we carry the equipment to handle larger multi-zone homes without splitting the work across days.
- Blackhawk
- Sycamore Valley
- Green Valley
- Diablo
- El Pintado
Service Area - Cities Near Danville
CleanRun also serves nearby communities across the East Bay and Tri-Valley. If you are outside Danville proper, check our pages for San Ramon, CA, Dublin, OH, Walnut Creek, CA, or Concord, NC to confirm coverage for your area.
Serving Danville, CA - Our Local Coverage Area
We’re based in the Danville 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 Danville
Most Danville jobs are scheduled within two to three business days, and scheduling is coordinated from our San Francisco Bay Area office with local crews serving Danville. Homes in Blackhawk or Sycamore Valley with larger systems may need a morning or full-day slot, which we confirm when you call.
Most Danville HOAs are fine with interior duct and vent work, and exterior vent terminations rarely raise concerns because the work is not visible from the street. If your community has specific exterior modification rules, we work within them and can document the existing termination before any change.
Yes. We serve the entire Danville area including Blackhawk, Sycamore Valley, Green Valley, and Diablo. Larger Blackhawk properties with multi-zone systems may take longer to clean thoroughly, and we quote those jobs with the additional square footage accounted for in writing before we start.
Call (806) 606-6902 for a written quote on any service on this page. Tomas Reyes and the CleanRun crews work under the Haven Standard: written price before work starts, documented photo record when the job is done, and the 365-Day Done Right Promise in writing.
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 Danville Customers Say
"On time, professional, and explained what the readings meant without talking down to me."
- Warren E."The before and after photographs of each run are the reason I used them. You cannot argue with what came out of the return."
- Marguerite O."Flat price agreed up front, no per-vent add-ons at the end. That was the whole reason I did not call the coupon company."
- Suzanne B.