Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Air Duct Cleaning Across Sunnyvale
Air duct cleaning in Sunnyvale typically runs between $380 and $650 for a full system on a single-family home, with most jobs completed in four to six hours. That’s the honest range we quote before we ever set foot in your house, and the written price you receive is the price you pay. We serve every Sunnyvale neighborhood, from Lakewood Village to Ponderosa Park to the downtown core, and we know the quirks of this city’s postwar housing stock better than anyone who just drives over from San Jose for the day. Call (669) 220-7869 for a free estimate and a straight answer.
Why Kestrel Air Duct San Jose Is Sunnyvale’s Preferred Air Duct Cleaning Company
We’ve been cleaning ducts under the Kingswell Guarantee since 2004, and the people of Sunnyvale have learned what that means: a written price before work begins, a defined arrival window, a clean job site, and a written guarantee on the work. When our technicians roll up to a 1960s rancher off El Camino Real or a newer condo near Murphy Avenue, they carry Rotobrush rotary brush systems and Nikro negative-pressure units, not a box-store shop vac. The difference shows in the air coming out of your registers.
Our crews understand the specific mess that Sunnyvale homes accumulate. We’ve seen original single-return systems in Eichler homes choked with powder-fine dust, and we’ve seen retrofitted supply ducts pulling fiberglass insulation out of unconditioned attics. Dale Whitmore, who leads our team, insists every technician document before-and-after conditions with a camera, because we believe you should see what was actually removed. Background-checked, uniformed, and trained on the Kingswell Way values code: say the price, show up in the window, leave the place cleaner, put the guarantee in writing, and come back if it fails.
Styles & brands we work with
Air Duct Cleaning Services in Sunnyvale
Air Duct Cleaning Services in Sunnyvale means source-removal cleaning, not just blowing air through the registers. We connect a Nikro negative-pressure extraction unit to your duct system, creating a powerful vacuum that pulls loosened debris out through a HEPA-filtered exhaust. Then we run a Rotobrush rotary brush through every accessible supply and return line, dislodging caked dust, pet hair, and the fine clay soil particles that blow in from the Santa Cruz Mountains every summer. The job includes cleaning the supply and return plenums, the blower compartment, and the accessible interior of the air handler. For most Sunnyvale homes, this runs $380 to $650, depending on the number of registers and the length of the duct runs.
Full System Video Inspection
Before we touch a single vent, we send a camera through your ducts. You’ll see exactly what we see. In Sunnyvale homes built before 1970, that often means identifying duct runs that were never sealed properly at the seams, or return ducts that terminated inside a wall cavity instead of an actual plenum. You get the video, not a vague summary.
Supply and Return Duct Cleaning
Many companies in this area clean only the supply side and skip the return entirely, because the return is harder to access in shallow crawl spaces. We don’t. We use low-profile agitation tools designed for the tight clearances under Eichler and rancher homes, and we clean both sides because dust doesn’t care which direction the air is moving. A clean supply duct connected to a dirty return just re-contaminates the whole system within weeks.
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.
HVAC Duct Cleaning in Sunnyvale
HVAC Duct Cleaning in Sunnyvale homes goes beyond the branch lines to include the equipment itself: the blower wheel, the evaporator coil, the drain pan, and the air handler cabinet. If your register is blowing dust even after the ducts were cleaned, the problem is usually the air handler. Dust accumulates on the blower wheel blades, unbalancing the motor and reducing airflow, while a dirty coil forces the system to run longer to hit the same temperature. We clean all of it, and the cost is included in the full-system range of $380 to $650 for most single-family homes in Sunnyvale. Homes near the bay, where marine air keeps humidity higher, may need coil cleaning more frequently because moisture binds dust into a sticky film. A retrofit system in a 1950s rancher with an undersized flex run may run slightly higher if the crawl space access is unusually tight, but you’ll know the exact number before we start.
Post-Renovation Duct Remediation
Sunnyvale has one of the highest renovation rates in the Bay Area. Tech workers buy an older rancher or Eichler, add a high-efficiency HVAC system, and leave the existing duct runs untouched in the attic or crawl space. Those old ducts, never sealed, pull fiberglass and attic dust straight into the new system. We find this constantly. The fix is source-removal cleaning plus sealing the accessible joints with proper duct mastic, and we document the result with before-and-after photos.
Air Handler and Coil Cleaning
Your ducts can be spotless, but if the blower motor is caked with a decade of hair and dust, the air coming out will never be clean. We open the air handler cabinet, vacuum and brush the blower wheel, and clean the evaporator coil with professional-grade coil cleaner that won’t corrode the fins. In Sunnyvale’s summer, when the system runs all day, a dirty coil is also a costly inefficiency: the compressor works harder, and your PG&E bill climbs. Our HVAC Duck Cleaning team treats the whole system, not just the visible vent covers.
Trusted Brands We Service in Sunnyvale
We work on all major residential and commercial HVAC brands found in Sunnyvale homes: Carrier, Lennox, Trane, Rheem, Goodman, and the high-efficiency Mitsubishi and Daikin mini-split systems popular in remodeled Eichlers. Our technicians stock common filter sizes and replacement register boots on the truck, so we can resolve simple issues during the same visit. We also carry Honeywell, Aprilaire, and Guardsman filtration products for Sunnyvale homeowners who want better air quality between cleanings, whether that’s a media cabinet filter or a standalone purification unit. If your system uses an unusual size, we can typically source it locally within a day or two.
Common Air Duct Cleaning Problems We See in Sunnyvale Homes
- Powder-fine clay dust in single-return systems. Sunnyvale sits on the valley floor, and in summer, the dry clay soils from the surrounding hills blow in and settle everywhere. Homes with a single return in the hallway pull this dust into the system constantly, and because there’s no return in the bedrooms, air stagnates and dust builds along the baseboards. This is the most common complaint we hear from families moving into older tracts near Cherry Chase and Serra Park.
- Fiberglass ‘snow’ from unsealed attic ducts. We see this in nearly every post-renovation home where a high-efficiency furnace was mated to original duct runs. The new blower is stronger, the old ducts leak at the seams, and the negative pressure sucks attic insulation into the supply lines. The first sign is usually white fibers on the register cover. A standard cleaning won’t fix it because the source is in the attic, not the duct walls.
- Shallow crawl spaces that techs refuse to enter. Many Sunnyvale ranchers have crawl spaces measured in inches, not feet. Companies that use tall, rigid agitation tools physically cannot reach the return ducts and will quietly skip them. We carry low-profile equipment designed for exactly this situation, and we don’t mark a job complete until both sides are cleaned and camera-verified.
- Shared dryer vent stacks in condos and apartments. In denser developments near downtown and along Wolfe Road, dryer vents from multiple units often share a common riser. Lint from one unit backs up into a neighbor’s line, and a technician who only cleans the accessible portion from one unit leaves the real blockage untouched. We inspect the full accessible path and document what we find, including any section that requires building management coordination.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning in Sunnyvale, CA
A full-system Air Duct Cleaning on a single-family home in Sunnyvale runs between $380 and $650. That range covers the vast majority of ranchers, Eichlers, and two-story homes in this city. Commercial duct cleaning, common for the office parks and lab spaces near Lawrence Expressway and Mathilda Avenue, is quoted by the square footage of conditioned space and the number of rooftop units, and typically starts around $600 for a small single-tenant suite. What moves the residential number: the count of supply and return registers, the length of the duct runs, the accessibility of the crawl space or attic, and whether any post-renovation contamination requires remediation. You’ll get the exact written price before we start, and that number won’t change at the door. Call (669) 220-7869 for a free estimate.
Key takeaways for Sunnyvale homeowners:
- Full residential systems run $380 to $650, written quote before work begins.
- Most jobs take 4 to 6 hours with two technicians.
- Crawl space accessibility and register count drive the final price.
- No per-vent pricing, no door-step revisions, no bait-and-switch.
We Also Serve Cities Near Sunnyvale
Our Sunnyvale crews regularly work in Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re in any of these neighboring cities, the same Kingswell Guarantee applies: written price, defined window, clean site, written guarantee. Call (669) 220-7869 and we’ll schedule a visit.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
The fine dust clogging Eichler ducts is primarily summer-dry clay soil from the nearby Santa Cruz Mountains that gets tracked in and pulled through single-return systems, plus the partial removal of it during standard cleanings that lack negative-pressure extraction. Rotobrush agitation alone knocks dust off duct walls, but without a Nikro negative-pressure unit pulling it out of the system, much of it settles back. We run both simultaneously, and we camera-verify every line. Call (669) 220-7869 to schedule an inspection.
Shared dryer vent stacks in Sunnyvale condos require cleaning the full accessible run from the unit’s connection point to the common riser, not just the first few feet behind the dryer. Lint from one unit can back up into a neighbor’s line, so we use a rotary brush and negative air to clear the path and inspect with a camera. If the blockage extends into a section controlled by the HOA or building management, we document it and coordinate with the right party. The Kingswell Guarantee covers our work on the accessible portion of the line.
No, and it’s not something to ignore. That ‘snow’ is typically fiberglass insulation from an unconditioned attic being pulled through unsealed duct seams by a new, more powerful blower. We recently serviced a condo on El Camino Real near downtown Sunnyvale where a retrofitted forced-air system was pulling fiberglass insulation from an unconditioned attic into the supply ducts, and our camera inspection showed white fibers at every register. Using negative pressure and HEPA filtration, we source-removed the contamination, sealed the duct runs, and restored proper airflow. The fix is cleaning plus sealing, and we can do both. Call (669) 220-7869 for an assessment.
It can, especially in crawl-spaced ranchers near the bay where winter humidity rises and cool metal ducts collect condensation on the outside. Inside the ducts, mold needs organic material, which comes from accumulated dust, pet dander, and skin cells. Sunnyvale’s cool, wet winters followed by warm, dry summers create the conditions for this organic layer to form. If our camera inspection finds microbial growth, we’ll show you the footage and recommend an appropriate remediation path with Abatement Technologies HEPA equipment. A standard duct cleaning removes the organic material that mold feeds on, which is why regular maintenance matters more here than in drier inland cities.
Yes, in most cases we can clean the accessible portions without removing painted-over registers by working through the duct openings at the air handler and by using agitation tools that fit through the register slot itself. However, for a full source-removal cleaning, access to the register is important because that’s where the dust enters and exits the living space. We’ll work with your property manager or landlord to determine the right approach without damaging the finish, and you’ll get a written quote before any work begins. For apartments, the price typically runs lower than a full house, and we’ll confirm the exact number on the phone.
Call Kestrel Air Duct San Jose for Air Duct Cleaning in Sunnyvale
If your registers are blowing dust, your allergies have worsened since you moved in, or you just bought a mid-century home and want to know what’s inside the ducts, call (669) 220-7869. You’ll speak with a live person, not a voicemail queue. We’ll give you a free estimate, a written price before any work, and a 365-Day Done Right Promise in writing. Air Duct Cleaning in Sunnyvale is what we do, and we do it right the first time.
Written by Dale Whitmore, Owner at Kestrel Air Duct San Jose, serving Sunnyvale since 2004.