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 Alamo
Air duct cleaning in Alamo, CA typically runs $450-$850 for a complete residential system, with most jobs scheduled within a few days and finished in one visit. We’re the local team that shows up in the window we promised, puts the price in writing before touching a single vent, and backs the work with our 365-Day Done Right Promise.
Alamo sits in the inland San Ramon Valley, where summer temperatures regularly climb past 100°F and central AC runs hard for months straight. That continuous airflow pulls heavy pollen loads through the system, and when fall arrives, the seasonal Diablo winds push dust, smoke, and wildfire ash from the dry oak-grassland foothills straight into HVAC intakes. Our crews serve Alamo from our San Francisco Bay Area dispatch office, and we’ve learned the specific failure patterns that show up in this community’s mix of 1960s ranch homes and sprawling hillside estates. Whether you’re off Stone Valley Road, tucked near the Las Trampas Regional Wilderness boundary, or in the heart of the village, we know what your ductwork is up against. Call (469) 972-3151 for a free estimate.
Why Kestrel Air Duct Cleaning Is Alamo’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Alamo on doing what we said we’d do, starting with the written price. Every visit operates under the Kingswell Guarantee, which means the estimate you approve is the invoice you pay. No door-step revisions, no per-vent add-ons, no “we found something unexpected” upcharges after the van is in your driveway.
Our technicians are background-checked, uniformed, and equipped with Rotobrush rotary brush systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. These aren’t shop vacs from the hardware store. The Rotobrush agitates debris at the duct wall while the Nikro pulls it out under controlled suction, and the HEPA system keeps what we loosen from settling back into your living space. We explain each step as we go, because The Kingswell Way says you should know exactly what you’re paying for.
Calls are answered by a live person, 24/7. Not a voicemail tree, not an automated queue. A real conversation, any time of day.
Our 365-Day Done Right Promise is documented in writing on every job. If the work falls short within that year, we return and make it right at no charge. That’s not a courtesy we extend when we feel like it. It’s a standing commitment, and it’s how we’ve operated since the Kingswell family of companies was founded in 2004.
Air Duct Repair in Alamo
Air Duct Repair in Alamo often starts with a discovery made during cleaning: the original fiberglass duct board in a 1970s ranch has delaminated internally, a trunk takeoff has separated, or a flex-duct run has been crushed by a storage box in the attic. These aren’t cosmetic issues. A failed duct section dumps conditioned air into your crawl space, pulls attic dust into your bedrooms, or bypasses the filter entirely, letting unfiltered air circulate through the system. Most air duct repair jobs in Alamo run $280-$650 depending on accessibility and the extent of the damage.
Collapsed Duct Board and Hidden Delamination
Alamo’s 1960s and 1970s ranch homes frequently still have original fiberglass duct board at the main trunk and takeoffs. This material degrades from the inside out, sending glass fibers into the airstream while looking intact from the outside. We find it with video inspection, then replace the failed section with sealed metal or modern flex duct.
Filter Bypass and Pressure Surge Damage
When a clogged or undersized filter creates back pressure, air finds the path of least resistance, often through a failed duct seam. In Alamo’s foothill-edge homes, this same failure mode lets Diablo wind ash bypass filtration entirely. We seal the breach and verify filter sizing to prevent recurrence.
Ductwork Cleaning in Alamo
Ductwork Cleaning in Alamo addresses the accumulated load that continuous summer AC operation and seasonal wind events deposit in your system. We’re not talking about a light dusting. In homes near the Las Trampas Regional Wilderness boundary, we’ve pulled out supply plenums coated with a visible gray ash layer after fall Diablo wind events, debris that standard seasonal maintenance never reaches because it’s inside the ductwork, not at the register. A typical whole-system ductwork cleaning in Alamo runs $450-$850 for residential properties, with larger custom estates above that range.
Negative-Air Extraction with Rotary Brush Agitation
Our process uses Rotobrush rotary brushes to knock debris loose from duct walls, followed by Nikro negative-air extraction that pulls the dislodged material out of your home entirely. Abatement Technologies HEPA filtration captures particles as small as 0.3 microns during the process, so what we remove doesn’t resettle in your living room.
Video Inspection Before and After
We run a camera through the system before we start and after we finish. You see what we found, and you see what we removed. In Alamo’s older housing stock, this often reveals disconnected runs or collapsed sections that weren’t visible from the registers, letting us address the real problem instead of just cleaning around it.
Trusted Brands We Service in Alamo
We clean and service systems with Honeywell, Aprilaire, and Guardsman filtration components, and we stock replacement filters and media for Alamo homeowners who want to maintain clean air between professional cleanings. The Honeywell media filters we install are sized to the actual airflow of your system, not just the nominal dimensions of the grille, which matters in Alamo where pressure surges from Diablo wind events can force debris past undersized filters. If your home has an Aprilaire whole-house air cleaner or Guardsman UV treatment, we inspect those components during our cleaning and note any maintenance needs in your written report.
Common Air Duct Cleaning Problems We See in Alamo Homes
- Original fiberglass duct board delamination. The 1960s-1970s ranch homes common in Alamo frequently still have original fiberglass duct board that degrades internally, releasing glass fibers into the airstream while appearing intact from the outside. Video inspection reveals the damage that visual checks miss.
- Diablo wind ash in supply plenums. After fall wind events, technicians working homes along hillside streets backing up to Las Trampas Regional Wilderness find a visible gray ash layer coating the supply plenum interior. Smoke bypassed a clogged or undersized filter during the pressure surge, a failure mode that doesn’t trouble fog-cooled cities 20 miles west.
- Horse-property return grille contamination. Alamo’s large-lot, horse-property culture means some older homes have return-air grilles positioned near exterior entries or barn-adjacent structures, pulling hay dust and animal particulates deep into the blower motor at rates unseen in denser suburban communities.
- Crushed or disconnected flex-duct runs. Storage activity in attics and crawl spaces often compresses flex-duct runs, restricting airflow and creating pressure imbalances that accelerate dust accumulation in the remaining open sections.
Pricing for Air Duct Cleaning in Alamo, CA
Most whole-system residential duct cleanings in Alamo run between $450 and $850. Smaller homes with straightforward access might fall toward the lower end. Larger custom estates with multi-zone systems, typically 4,000-7,000+ square feet, run higher due to additional equipment time and access complexity. Commercial duct cleaning is quoted per system after a site visit.
We charge one flat price per system, agreed in writing before any work begins. No per-vent pricing, no “we found extra returns” add-ons after we’re in your attic. The price covers complete cleaning of supply and return ductwork, the main trunk lines, and the air handler cabinet, plus before-and-after video documentation. If we find damage requiring repair, we show you the video, explain the scope, and give you a separate written price for that work. You approve it or you don’t. No pressure either way.
Estimates are free. Call (469) 972-3151 to schedule yours.
We Also Serve Cities Near Alamo
Our crews work throughout the Diablo Valley and surrounding communities. We regularly schedule Air Duct Cleaning appointments in Walnut Creek, Moraga, Lafayette, and Danville, with the same written pricing and 365-Day Done Right Promise applied to every job. If you’re searching for Air Duct Cleaning in Alamo or any neighboring city, the same standards and equipment travel with us.
Serving Alamo, CA - Our Local Coverage Area
We’re based in the Alamo 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 Alamo
The orientation of the foothills and the path of Diablo wind events push dry-grass debris and wildfire smoke directly into HVAC intakes on Alamo’s hillside streets, while Danville’s slightly more sheltered valley position and different wind exposure reduce this loading. The ash layer we find in Alamo supply plenums after active fire years is virtually absent in comparable Danville homes. Call (469) 972-3151 for a post-season inspection if you noticed any smoke odor last fall.
Original fiberglass duct board from the 1960s-1970s typically needs replacement, not just cleaning, because internal delamination releases glass fibers into your airstream and creates hidden bypass paths that standard cleaning can’t restore. We identify this with video inspection and give you a written repair price before any replacement work begins. The cleaning price covers what we can safely remove; damaged board sections are quoted separately.
Alamo’s inland location produces summer highs regularly topping 100°F, meaning central AC runs almost continuously June through September and ducts accumulate heavy pollen and dust loads faster than in coastal Bay Area cities where natural ventilation reduces runtime. Most Alamo homes benefit from cleaning every 3-5 years, with foothill-edge properties and homes with pets or horse-adjacent returns toward the shorter end of that range. Call (469) 972-3151 and we’ll assess your specific system load.
Yes. A filter can appear intact while having developed micro-gaps or improper seating that lets fine ash particles pass during the high-pressure surge of a Diablo wind event. The ash settles in the supply plenum and first few duct runs, areas not visible during a standard filter change. Our before-and-after video inspection shows you exactly what passed the filter.
Yes. Return grilles near barns or exterior entries pull hay dust and animal particulates deep into the blower motor and secondary runs, accelerating buildup beyond normal suburban rates and sometimes requiring additional attention to the blower cabinet and evaporator coil. We note this in our pre-cleaning assessment and adjust our process and pricing accordingly, with everything documented in writing before we start.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Alamo under the Kingswell Guarantee since 2004.