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 Air Duct Cleaning Across Danville
Air duct cleaning in Danville typically runs $450 – $950 for a whole-home system, with multi-zone homes in Blackhawk and Diablo often landing at the higher end due to separate HVAC units serving each wing. We’re the Air Duct Cleaning crew that serves Danville from our San Francisco Bay Area dispatch office, and we know the difference between a compact ranch near Sycamore Valley Road and a 6,000-square-foot zoned home off Diablo Road. Our technicians carry Rotobrush rotary systems and Nikro negative-air machines through Danville’s hills regularly, and phones are answered by a live person at (361) 326-5060 whether you call on a Tuesday morning or Sunday evening.
Why Hollis Air Duct Cleaning Is Danville’s Preferred Air Duct Cleaning Company
We’ve been part of the Garrison Partners family since 2004, and our Danville customers come back because we price by the system, not by the vent. In a town where the average home has more square footage than most of the Bay Area, that distinction matters. Our 365-Day Done Right Promise covers every job in writing – if the work fails within a year, we return and make it right at no charge, including a free second visit. Technicians are background-checked and uniformed; you know who’s arriving before they knock. And because Air Duct Cleaning in Danville often involves multiple systems after wildfire season, we document every supply and return duct with before-and-after photos so you can verify what came out of ducts you’ll never see inside.
HVAC Duct Cleaning in Danville
HVAC Duct Cleaning in Danville means source removal from the entire forced-air pathway – supply trunks, return plenums, branch lines, and registers – using negative-pressure containment so debris doesn’t migrate into your living space during the job. For Danville’s 1980s and 1990s-era homes, this is critical: original flex duct in attics and crawlspaces degrades over decades, creating pockets where construction debris, pollen, and wildfire ash accumulate. A typical single-system HVAC duct cleaning in Danville runs $450 – $650; homes with two or three zones start at $750 and range up to $950 depending on total linear footage and accessibility.
Multi-Zone System Cleaning
Homes in Blackhawk and Diablo often have three separate air handlers serving different wings. Each needs its own negative-pressure setup. We don’t run one machine across the whole house – vacuum drop-off on long flex runs is too extreme for proper source removal. Per-system pricing is the only honest model here.
Post-Wildfire Smoke Restoration
After a bad smoke week, fine ash settles in return ducts and plenums. Standard vacuuming won’t touch it. We use agitation tools on the flex runs and HEPA-filtered negative-air machines to capture particles down to 0.3 microns, then seal the system with mastic where leaks would let new contamination in.
Vent Cleaning in Danville
Vent Cleaning in Danville focuses on the terminal points – supply and return registers, grilles, and the short boot connections where duct meets wall or floor. This isn’t a substitute for full HVAC duct cleaning, but it’s the right service when registers are visibly dusty or when a room isn’t getting airflow despite the system running. In Danville’s larger homes, blocked or painted-shut registers are common on second wings or guest suites that see seasonal use only. A standalone vent cleaning runs $180 – $340 for a typical Danville home; we bundle it with full system work at reduced rates when both are needed.
Register Removal and Deep Cleaning
We pull every register, clean the boot and first few feet of duct behind it, and check for construction debris left from the original 1980s or 1990s build. Paint overspray and pet hair are the usual culprits in Danville’s established neighborhoods.
Airflow Balancing Check
After vent cleaning, we measure static pressure and room-by-room airflow. In multi-zone Danville homes, this often reveals dampers that were never properly adjusted or flex duct that has sagged, restricting flow to distant rooms.
Trusted Brands We Service in Danville
Our vans carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies – the same negative-air machines and rotary brush systems used in commercial buildings, sized right for residential work. For filtration upgrades, we stock Honeywell, Aprilaire, and Guardsman products that fit the common air handler sizes found in Danville’s 4 – 5 ton systems. We don’t order parts from a warehouse three states away; our Bay Area inventory means most filter upgrades and minor repairs happen same visit, not two weeks later.
Common Air Duct Cleaning Problems We See in Danville Homes
- Original flex duct degradation in 1980s builds. The San Ramon Valley saw heavy development during that decade, and the flex duct installed then has exceeded its design life. We find collapsed runs, torn inner liners, and trapped construction debris that partial cleaning would simply redistribute.
- Wildfire ash in return plenums after smoke events. Danville’s position in the valley means smoke settles rather than passing through. Fine ash works past standard filters and coats the return side of the system, where it can re-entrain for months after the visible haze clears.
- Multi-system homes quoted as single-system jobs. A Blackhawk home with three zones and three air handlers requires three separate containment setups. Any quote that doesn’t specify per-system pricing is guessing, and the guess usually gets corrected upward once the crew arrives.
- Skipped camera inspections on inaccessible runs. Danville’s large lots mean long duct spans through attics and crawlspaces. Without video verification, there’s no proof the far end of a 40-foot flex run was actually cleaned – or that it was intact enough to clean at all.
Pricing for Air Duct Cleaning in Danville, CA
Whole-home air duct cleaning in Danville runs $450 – $950 depending on system count and total duct footage. Single-zone homes near Sycamore Valley Road typically fall at $450 – $650. Two-zone homes range $650 – $850. Three-zone properties in Blackhawk or Diablo start at $850 and can reach $950 if extensive flex duct replacement is needed alongside cleaning. Vent cleaning alone is $180 – $340. Dryer vent cleaning, often booked together, adds $120 – $180. We write the price before touching anything. No per-vent add-ons, no equipment charges that appear after we’re inside. Every estimate is free – call (361) 326-5060 and we’ll quote your specific system count and layout.
We Also Serve Cities Near Danville
Our crews work throughout the San Ramon Valley and beyond, including San Ramon, Clayton, Alamo, and Dublin. Each home gets the same written price, same 365-Day Done Right Promise, and same documentation standard – whether it’s a single-system ranch or a five-zone estate.
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
Each HVAC system needs its own negative-pressure containment setup, its own agitation cycle, and its own documentation set. Three systems means three times the equipment runtime, three filter changes, and three sets of before/after photos. We price per system so you’re not subsidizing a mansion’s workload with a single-system rate, and so a single-system home isn’t overpaying to cover our costs on a multi-zone job. Call (361) 326-5060 for a free estimate broken down by system.
A high-MERV filter captures particles at the air handler, but it doesn’t remove ash already deposited in your return ducts and plenums. That ash re-entraines every time the system cycles. In Danville’s 1980s-era homes with original flex duct, the rough interior surface traps fine particles that filters downstream cannot reach. We clean the source, then recommend the right filter for ongoing protection. Call (361) 326-5060 to schedule post-smoke inspection.
It’s worth inspecting first. We run a camera through original flex duct before quoting cleaning. If the inner liner is intact, source removal restores airflow and removes decades of accumulated debris. If the duct is torn, collapsed, or delaminated, we tell you straight and quote replacement on the affected runs – no point cleaning something that’s disintegrating. The inspection itself is included in our free estimate. Call (361) 326-5060 to book.
We photograph every supply and return duct before and after, with timestamps, and provide you the images. For multi-zone Danville homes, we label each photo by system and wing – “System B, upstairs east return” – so you can match documentation to the register locations in your home. The Garrison Standard requires it. If a company won’t show you photos of your own ducts, they didn’t document the work. Call (361) 326-5060 and we’ll explain our documentation process before you book.
MERV 13 is the practical ceiling for most residential systems without upgrading the blower motor – it captures fine smoke particles without creating excessive static pressure that strains older equipment. In Danville’s multi-zone homes with variable-speed blowers, MERV 14 – 16 may be viable, but we measure system capacity before recommending the jump. We stock Honeywell and Aprilaire filters in common sizes and verify fit during every cleaning. Call (361) 326-5060 to check what’s right for your specific air handlers.
Ready to get your Danville home’s ducts inspected, priced in writing, and cleaned by the book? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll ask about your system count, your neighborhood, and any recent smoke events – then give you a written price that doesn’t move at the door, backed by our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Danville and the San Ramon Valley.