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 Danville
HVAC cleaning in Danville typically runs $425-$780 for a complete system clean, depending on the number of zones and the condition of the coils and blower. In homes throughout Danville’s Blackhawk, Sycamore Valley, and Greenbrook neighborhoods, we find that 25-40-year-old duct systems accumulate far more debris than newer construction because of the San Ramon Valley’s extreme summer AC runtime and wind-driven particulate during Diablo events. Our team at CleanRun Air Duct Cleaning, led by Tomas Reyes, serves Danville homeowners from our San Francisco Bay Area office with written pricing before any work starts and a documented photo record of every duct run afterward. Call (806) 606-6902 to schedule an assessment.
Why CleanRun Air Duct Cleaning Is Danville’s Preferred HVAC Cleaning Company
Since 2013, CleanRun has served more than 52,000 homes, every one of them with a written price before a single panel came off. Danville homeowners tell us the same thing: they’ve had other companies quote a vague range over the phone, then discover a much larger invoice after the technician arrived. That’s why Haven Standard Clause 1 exists. The price is in writing before work begins, and it does not change unless you approve a change order in writing first.
Our technicians are background-checked, uniformed, and identified by name before they arrive at your Danville home. They photograph the inside of every duct run before and after cleaning, so you can see exactly what was removed. This isn’t a marketing claim. It’s a deliverable you receive as part of the standard job record, and we’ve done it on every job since our first one in 2013.
When a Danville homeowner calls with a crushed return duct in Blackhawk or a disconnected supply run in Sycamore Valley, we dispatch a crew that already knows what to look for in this specific housing stock. That local knowledge means fewer diagnostic hours, which keeps the written price honest.
Our HVAC Cleaning Services in Danville
Evaporator Coil Cleaning
Danville’s inland summer heat pushes AC systems hard. When temperatures sit above 95°F for weeks, evaporator coils that haven’t been cleaned in years develop a layer of caked dust and biofilm that cuts airflow and raises compressor head pressure. In a Danville home with a 1990s system, we regularly find coils that are 40-60% blocked. We use professional-grade equipment from Rotobrush and Nikro to clean coils in place, then coat them with a Guardsman antimicrobial treatment. Expect this to run $175-$325 as part of a full system clean.
Air Handler Cleaning
The air handler in an older Danville home has typically moved valley air for three decades. What we find inside is specific and predictable: fine gray dust caked on the blower wheel blades, filters that collapsed and let particulate bypass, and sometimes evidence that wildlife spent a season in the cabinet. We remove the blower assembly, clean each blade, sanitize the housing, and document everything with photos. Air handler cleaning in Danville runs $150-$280.
Blower Cleaning
A dirty blower wheel can reduce airflow by 30% or more, which means your AC runs longer to hit the same setpoint. That matters in Danville, where summer afternoons routinely cross 100°F in Sycamore Valley and Blackhawk. We clean and balance blower assemblies on-site, inspect the motor windings for dust accumulation that shortens lifespan, and note any run capacitor that’s bulging. Blower cleaning is typically $125-$225.
Condenser Cleaning
Danville’s dry summers and Diablo wind events push fine debris into outdoor condensers. Cottonwood, dry grass, and dust from the surrounding hills clog coil fins and force the compressor to work harder. We clean condenser coils from the inside out, straighten bent fins, and clear the pad of vegetation. On a two-stage system in Blackhawk that’s been running nonstop since May, we’ve seen condenser discharge temperatures drop 12°F after a proper clean. Condenser cleaning runs $110-$200.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Danville
We work on every major HVAC brand found in Danville homes: Carrier, Trane, Lennox, Rheem, Goodman, and others. Our equipment roster includes Rotobrush and Nikro air-duct systems, Abatement Technologies HEPA filtration, Honeywell media filters, and Guardsman antimicrobial treatments, so the tools we use are ones you can look up independently before you agree to a price. When a Danville customer needs a replacement filter housing to accept MERV-13 media, we carry common sizes on the truck. That means the fix happens the same day, not a week later after a parts order.
Common HVAC Cleaning Problems We See in Danville Homes
- Disconnected supply runs in multi-zone systems: In 1980s and 1990s Blackhawk homes with zoned HVAC, we regularly find supply duct runs that have separated at the plenum or at branch takeoffs. Conditioned air leaks into the attic, which is why some Danville homeowners notice certain rooms never cool down no matter how long the AC runs.
- Heavy return-duct loading from Diablo winds: During fall offshore wind events, fine dust and vegetation debris get pushed into homes and pulled into return ducts. Homes without MERV-11 or better filtration on the return side are the ones where our camera shows the heaviest accumulation at the first elbow.
- Original duct liners degrading after decades: Many Danville homes built in the 1980s still have the original fiberglass-lined ductwork. The interior liner deteriorates with heat and age, releasing fibers into the airstream. We photograph this during the inspection so you can see it before deciding on repair or replacement.
- Evaporator coils fouled by wildfire smoke: The San Ramon Valley pools smoke during Northern California fire events. Systems running during those periods pull fine particulate directly onto evaporator coils and blower wheels. If the coil hasn’t been cleaned since the last fire season, expect reduced airflow and possible freeze-ups the following summer.
Pricing for HVAC Cleaning in Danville, CA
A complete HVAC cleaning in Danville, including evaporator coil, blower, condenser coil, and air handler cleaning, runs $425-$780 for a single-zone system. Multi-zone homes in Blackhawk and Sycamore Valley, which often have two or even three air handlers and long branch runs, run $650-$1,150. Factors that shift the price: the number of zones, accessibility of the air handler (attic vs. crawlspace vs. closet), and whether duct repair or sealing is added to the scope. You’ll receive a written price before any work starts, every time. There is no per-vent pricing and no coupon that becomes a surprise invoice. If you have a written estimate from another Danville company, bring it. CleanRun provides a Free Second Opinion in writing, at no cost. For an exact quote on your system, call (806) 606-6902.
We Also Serve Cities Near Danville
Our crews serve Danville and the surrounding San Ramon Valley communities. If you’re in San Ramon, Dublin, Walnut Creek, or Concord, the same written-pricing standard and documented photo record apply. You can read more about our approach on our HVAC Cleaning service page, or learn more about what we do specifically in this valley on our Danville page.
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 - HVAC Cleaning in Danville
Wildfire smoke that drifts into the San Ramon Valley gets pulled into your return ducts whenever the system runs. Fine smoke particulate coats the evaporator coil, blower wheel, and interior duct walls with a sticky residue that ordinary vacuuming won’t remove. During a cleaning, we use agitation tools that loosen this residue before extraction. If the smoke exposure was recent, we also recommend a coil treatment with a Guardsman antimicrobial product. Call (806) 606-6902 to schedule.
Yes. Homes built in the 1980s in Danville often have ductwork with fiberglass liners or flexible insulated runs that degrade under heat and age. Aggressive cleaning can damage these materials. We inspect with a camera first, identify the duct material, and adjust the agitation method accordingly. This is standard procedure under Haven Standard Clause 4. Call (806) 606-6902 for an assessment.
Because Danville sits in an inland valley where Diablo winds and wildfire smoke accumulate. Coastal cities get marine air that flushes particulate out. Danville gets heat that traps it and winds that force it inside. The result is measurably heavier return-duct loading, which is why we spend more time on the return side in Danville homes than we would in, say, a coastal community. Call (806) 606-6902 with questions.
Yes, meaningfully. In a multi-zone Blackhawk home, we’ve documented cases where cleaning a heavily coated evaporator coil and blower wheel allowed the system to hit setpoint 15-20% faster. That’s not a guarantee for every system, but the physics is straightforward: clean coils transfer heat more efficiently, and a clean blower moves more air per rotation. Call (806) 606-6902 to talk about your specific system.
We find blower wheels caked with a gray paste of dust and smoke residue, collapsed filters that let particulate bypass, and occasionally rodent debris in the cabinet. In constant-runtime systems, the blower wheel accumulates a hard crust that reduces airflow. We remove and clean the entire blower assembly, sanitize the housing, and photograph before and after. Call (806) 606-6902 for an exact quote.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving Danville and the San Ramon Valley since 2013.