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 Redwood City
Air duct cleaning in Redwood City typically costs $400 – $850 for a full system on a standard 3 – 4 bedroom home, and the job is usually completed in 4 – 6 hours. We work throughout the 94061, 94062, 94063, 94064, and 94065 ZIP codes, from the El Camino corridor to Redwood Shores. Our team knows the difference between a 1950s rancher with original galvanized crawlspace runs and a 2000s waterfront condo on flex duct, and we plan the work accordingly. Call (866) 593-7291 for an exact quote for your ductwork.
Why Duct Cleaning Sunnyvale Is Redwood City’s Preferred Air Duct Cleaning Company
Homeowners in Redwood City keep calling us back because the job actually shows up in the photos. We hand you before-and-after images of your own ducts on a video inspection screen, not a stock brochure. Our Air Duct Cleaning team runs Rotobrush rotary brush extraction and Nikro HEPA-rated negative pressure on every job in Redwood City, which matters when you’re dealing with six decades of redwood needle litter packed into crawlspace runs off the El Camino.
Noel Brandt runs the crew with a simple rule: if we find a torn flex run or a rusted galvanized joint, we show you the photo and we fix it. That’s the repair side of the work, and most Redwood City calls from the 94061 and 94063 tract homes end up needing at least one seam resealed. We’re not a generalist handyman service that treats ducts as a side gig. This is what we do. If you live in Redwood City and want someone who will actually remove the debris rather than fog over it, call us at (866) 593-7291.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
HVAC Duct Cleaning in Redwood City
HVAC Duct Cleaning in Redwood City means pulling the accumulated debris out of your supply and return runs under negative pressure, the way the NADCA standard describes, rather than blowing it around with positive pressure and hoping it lands somewhere harmless. In older Redwood City homes, especially the post-war ranchers in 94061 and 94063, the ductwork runs through unconditioned crawlspaces and attics, so what’s inside the runs is decades of construction dust, rodent debris, and fine redwood and oak pollen the onshore wind pushes through open return plenums. Redwood City’s dry summers don’t bake moisture out of crawlspace runs the way inland heat does, so the debris sits damp for months and packs into a mat. We remove it.
Cleaning Method
We connect a Nikro HEPA vacuum to the trunk line and create continuous negative pressure, then run Rotobrush agitation tools through every supply and return branch. The process pulls the debris out of the system rather than pressurizing it up through the registers into your living space. For ductwork with a heavy load, we add compressed-air agitation to break the mat loose from the duct walls before extraction.
Repair and Sealing
On the same visit, if we find separated seams, rusted galvanized joints, or crushed flex runs, we can repair them. That’s the gap a lot of Redwood City customers tell us a previous cleaning company left them with: someone spent an hour blowing air through the system, pointed at the dust cloud, and never mentioned the leaky plenum that was pulling crawlspace air into the return side. We measure the leakage, show you the gap, and seal it.
Vent Cleaning in Redwood City
Vent Cleaning in Redwood City starts with the air path your actual air moves through: the registers, the boots, and the duct branches connected to them. A register that’s been painted over five times in a 1962 rancher off Woodside Road is often hiding a boot flange that’s separated from the wall, pulling dust straight out of the dead space behind the drywall. In the waterfront condos of 94065, where flex duct runs through tight mechanical chases, we see flex that’s kinked or partially collapsed from original installation, restricting airflow to the far bedroom and coating the registers with fine filter dust.
Supply Vent and Boot Cleaning
We remove each register, vacuum the boot, and run the brush down the first several feet of the branch before the trunk line. If the boot has pulled away from the sheetrock, we reseat it and replace the gasket so the onshore wind the Redwood City sign brags about isn’t feeding your return plenum with unfiltered crawlspace air.
Return Vent and Plenum Work
The return side is the part most Redwood City jobs miss. On an older home, we open the return plenum and look inside. If it’s packed with redwood needles and a rodent nest, no amount of supply-side work fixes the air quality. We extract the plenum, vacuum the return riser, and seal the openings that let debris in.
Trusted Brands We Service in Redwood City
Our crews work with Rotobrush and Nikro equipment every day, the same brands commercial contractors use on multi-story office builds. We’re also familiar with the Honeywell and Aprilaire filtration and purification systems many Redwood City homeowners install after a cleaning, so if you want to upgrade from a basic 1-inch filter to a media cabinet or Aprilaire purification, we can help you size it and integrate it with the existing return. For compromised or contaminated systems, we bring Abatement Technologies equipment to the job. You don’t need to coordinate a separate vendor to handle the filter housing on the same system we just cleaned. When we’re in Redwood City and run out of something common, like a boot gasket or a sealing collar for a 7-inch galvanized branch, we restock same-week. No multi-week parts wait.
See the difference
Before
After
Before
After
Before
AfterCommon Air Duct Cleaning Problems We See in Redwood City Homes
- Fog-driven moisture and rust. Morning fog and wet winters push condensation into the crawlspace-mounted galvanized ducts of 94061 and 94063 ranchers. Rust at the old joints shows up years earlier here than in hotter Peninsula cities where ducts dry out daily.
- Rodent and redwood debris in return plenums. Open return plenums in the pre-1970 homes pull in redwood needle litter, rodent nesting, and fine dust off the crawlspace floor. We remove it under negative pressure rather than blowing it through.
- Leaky boots and register gaps. The onshore wind Redwood City gets most afternoons pushes unfiltered air through gaps behind the register boots. Older homes off the El Camino have boots that separated from the drywall decades ago.
- Flex duct restrictions in Redwood Shores. The 94065 condos and townhomes built in the 1980s-2000s often have tight chases with kinked flex runs from original construction, which starves far bedrooms and loads the system with static pressure.
Pricing for Air Duct Cleaning in Redwood City, CA
A full Air Duct Cleaning in Redwood City for a typical 3 – 4 bedroom single-family home runs $400 – $850 depending on the number of supply and return runs, whether the system includes a crawlspace trunk line, and how much debris has accumulated. The smaller 1980s-2000s condo systems in Redwood Shores typically fall in the $350 – $550 range. A crawlspace return plenum that needs full extraction and sealing adds $120 – $220. We give you one flat price per system before we start, agreed over the phone, and we don’t switch to per-vent pricing once the van is parked. Call (866) 593-7291 for your exact number.
We Also Serve Cities Near Redwood City
Our crews handle Air Duct Cleaning in Redwood City and the surrounding Mid-Peninsula from Palo Alto down to Sunnyvale. We work in Mountain View, Cupertino, and the residential neighborhoods around the Stanford campus. If you’re just outside Redwood City proper, call (866) 593-7291 and we’ll tell you straight whether it’s our route.
Serving Redwood City, CA – Our Local Coverage Area
We’re based in the Redwood City 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 Redwood City
Redwood City’s morning fog and wet winters introduce moisture into unconditioned crawlspaces nearly every day for months at a time, and the older 94061 and 94063 ranchers keep that moisture against galvanized sheet metal ducts that never fully dry. In hotter inland cities, daytime heat bakes the crawlspace dry. Here, the fog-soaked air condenses on the cool metal at night, rust forms at the seams, and the dust stuck to the duct exterior stays damp long enough for mold to grow. We recommend a video inspection if you have a pre-1975 home and any history of damp crawlspace smell. Call (866) 593-7291 to schedule one in Redwood City.
No, in most Redwood City homes the real problem is physical debris, not microbial surface load. Fogging a sanitiser into a duct system that’s still packed with redwood needle litter and rat nesting does not remove what’s fouling the air. The moisture-driven mold on a crawlspace duct is on the exterior of the metal, not floating in the airstream, so a fogging treatment doesn’t touch it. Source removal with negative pressure and agitation is what solves the problem. Fogging is an upsell. Skip it and hire a crew that pulls the debris out. Call (866) 593-7291 for a straight answer on your system.
Pull a return register and shine a flashlight in, or ask us to run a camera inspection. On the 1950s and 60s homes in 94061 and 94063, we routinely find return plenums that have never been opened since construction. If there’s a matted layer of redwood needle litter and dust inside the return trunk, or the boot flange is separated from the drywall, that’s your answer. We include a video inspection at the start of every job in Redwood City so you can see the before and after. Call (866) 593-7291 to book one.
It’s not a retrofit panel. If your system has a standard 1-inch filter slot, the highest MERV filter you can realistically install without choking airflow is a MERV 8 or maybe 9. Installing a MERV 13 in a basic slot just strains the blower and pulls more air through the leaks in an older duct system. If you’re in Redwood City and dealing with pollen from the redwood and oak canopy, we talk to you about upgrading to a media cabinet capable of holding an Aprilaire or Honeywell filter with a higher MERV rating without suffocating the system. The ducts and the filter are one system. Call (866) 593-7291 if you want the sizing conversation.
Yes, and you should treat it as a separate fire-safety job, not an add-on. We run dryer vent cleaning as its own service with its own equipment, because a blocked dryer vent is a fire risk and a code compliance issue. Many Redwood City homes route the dryer exhaust through the same crawlspace as the HVAC ducts, which raises the stakes. If you’re paying for a full air duct clean, ask that the dryer vent be quoted and cleaned as its own line item. Call (866) 593-7291 to get both on the same visit.
Written by Noel Brandt, Owner at Duct Cleaning Sunnyvale, serving Redwood City since 2017.