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 Kensington
Air duct cleaning in Kensington costs between $450 and $950 for a typical single-family home, depending on the number of returns, the condition of the original sheet-metal runs, and whether flex takeoffs need resealing after 1990s furnace retrofits. Most Kensington homes we see have ductwork that predates the current heating equipment by decades, which means the job often includes more than a simple negative-pressure extraction. If your ranch or split-level off Farmington Avenue or High Road has never had its ducts professionally cleaned, you’re breathing air that’s passed through 40 to 60 years of accumulated dust, oil-era combustion residue, and in many basements, active microbial growth. Call (980) 447-2498 and we’ll give you a written price before any work begins.
Our crews know Kensington’s housing stock because we work in it constantly, including Kensington Air Duct Repair. This is not a cookie-cutter suburb of new construction. It’s a village where the ductwork tells the story of the home’s heating history, and where a real inspection matters more than a flashy truck.
Key Takeaways:
- Kensington duct cleaning runs $450 – $950 for a typical single-family home.
- Original galvanized trunk lines with 1990s flex takeoffs are the most common failure point we see.
- The realistic cleaning interval for rural Kensington homes is 3 – 5 years, not the 2-year pitch you’ll hear elsewhere.
- Every job includes a written price before work starts and a tech you can verify by name and photo at the door.
Why Linden Air Duct Cleaning Is Kensington’s Preferred Air Duct Cleaning Company
Kensington homeowners tend to be skeptical of the duct cleaning industry, and they should be. The trade has a reputation for bait-and-switch pricing and for sending unverified technicians into homes. We built Linden Air Duct Cleaning to counter that reputation with specifics, not slogans. Since 2004, as part of the Threshold Group family, we’ve operated under the Threshold Standard: every technician is background-checked, identity-verified, and arrives in a clean, marked uniform. Before the visit, you get the tech’s name and photo. At the door, they show a photo ID badge. Every single time.
Kensington residents also tell us they want to know the price before a van pulls up. So we put it in writing. No per-vent games, no “starter coupon” that balloons into a $1,400 invoice once the technician “finds” extra returns. You get one flat price per system, agreed to before any equipment comes off the truck. If the work isn’t right, the 365-Day Done Right Promise means we make it right, in writing, on every job.
We answer the phone with a live person 24 hours a day. Call (980) 447-2498 at midnight if you want. A human picks up, not a voicemail loop.
Marcus Veale, who leads our team, grew up in the trades and knows what a properly sealed duct system should look like in a 1970s Connecticut ranch. That matters when the job is under your house, in a damp basement, where shortcuts are easy to hide. We don’t hide anything. We run a camera inspection and show you what’s actually in your ducts before we clean them, and after.
Vent Cleaning in Kensington
Vent cleaning in Kensington’s mid-century homes means something different than it does in a newer subdivision. The supply and return vents in these 1960s – 1980s ranches and split-levels are typically sheet-metal registers screwed directly into galvanized duct boots, often rusted at the seams from decades of basement humidity, and many have never been removed since the house was built. Our vent cleaning process removes the register, brushes and extracts from the boot, and seals visible gaps at the drywall-to-duct junction. A supply-side vent cleaning in Kensington typically adds $75 – $150 per system, and we recommend it as part of a full cleaning rather than a standalone service because the debris in the boot is usually a symptom of what’s sitting deeper in the trunk line.
Marcus Veale, Owner at Linden Air Duct Cleaning, serving Kensington since 2004, often tells homeowners that the vent is the last thing the air touches, but the first place you’ll see evidence of a larger contamination problem.
Supply Vent Deep Clean
Supply vents in Kensington homes built before 1985 often have rusted damper blades and gaskets that have degraded into the airstream. We remove, clean, and re-seat each register, then check airflow at each vent to confirm the blower is delivering throughout the run. When a supply vent has visible accumulation on the register face, it’s usually a sign the trunk below is loaded.
Return Vent Inspection
Return vents are where Kensington’s basement humidity gets pulled into your system. Because many return-air seams were never taped or mastic-sealed during the original install, the negative pressure from the blower actively draws humid, dust-laden basement air into the return. We clean the return boot and inspect the sealing at every return drop, especially on split-levels where the air handler sits in an unconditioned basement corner.
Ductwork Cleaning in Kensington
Ductwork cleaning in Kensington homes almost always involves the original galvanized trunk lines, because that’s what the 1955 – 1985 building stock was built with. The main trunk runs are sheet metal, and in this humid climate, the joints and seams have often corroded enough to create gaps where dust, insulation fibers, and in the worst cases, rodent droppings from basement activity enter the airstream. A full ductwork cleaning for a 1,800 – 2,600 square foot Kensington home runs $550 – $950 depending on the number of drops and accessibility. We use negative-pressure extraction with HEPA filtration, agitation tools, and source removal on the supply and return sides, not just a vacuum at the register.
On a split-level off Kensington Road, our tech found the 1990s flex takeoff over the original galvanized trunk was drywall-screwed and unsealed, with visible microbial growth along the bottom; we ran a camera inspection, established negative pressure with HEPA filtration, used agitation tools and source removal on the supply and return ducts, then sealed every junction before the homeowner switched to a heat pump – the air handler’s blower motor had been pulling basement humidity directly into the return for years. That kind of find is not rare in Kensington. It is the norm.
Trunk Line Source Removal
We don’t just polish the accessible sections. Our Rotobrush and Nikro equipment reaches into the main trunk and branch runs, breaking loose the caked-on debris that has adhered to galvanized walls over four or five decades. The residue from the original oil furnace era, before the home was converted to natural gas or a heat pump, has a distinctive greasy texture that requires mechanical agitation, not just airflow.
Flex Takeoff Resealing
The most common retrofit in Kensington is a 1990s flex takeoff added over an original galvanized trunk, often secured with drywall screws and never sealed. These junctions sit low, in damp basements, and become collection points for debris and microbial growth. As part of ductwork cleaning, we clean these junction points and reseal them with mastic so the blower stops pulling humidity and contamination from the basement into your living space.
Trusted Brands We Service in Kensington
We work on duct systems in Kensington homes regardless of the equipment brand originally installed, but we stock common replacement parts and air-quality products from Aprilaire, Honeywell, and Abatement Technologies. Our professional-grade cleaning equipment comes from Rotobrush and Nikro, which means the extraction is strong enough to pull the oily, caked residue these older systems hold. If your Kensington home has an Aprilaire media filter or a Honeywell bypass humidifier on the air handler, we clean and inspect the duct interface around those units as part of the system cleaning. We don’t sell you a kit of add-ons at the end of the job. We tell you what we found, what we can fix now, and what can wait.
Common Air Duct Cleaning Problems We See in Kensington Homes
- Flex-over-galvanized junctions that were never resealed after a 1990s furnace swap. These sit low in damp, unfinished basements and collect decades of debris plus visible microbial growth. The blower pulls from them constantly.
- Oil-era combustion residue baked into the trunk walls. Connecticut has one of the highest rates of home heating oil use in the nation, and Kensington’s forced-hot-air oil furnaces left a greasy film in the ducts that later conversions to gas or heat pumps never cleaned out.
- Elevated basement humidity feeding mold into the return-air side. Kensington’s position in the lower Connecticut River Valley means humid summers saturate basement air. Where return seams were never taped or mastic-sealed, that moisture enters the ducts between heating seasons and establishes mold in the lining.
- Long rural service drives adding dust and pollen loading. Kensington sits in a predominantly residential village with open land and unpaved drive approaches in many parts. Air filters load faster, and the dust that bypasses them lands in the ducts. This is not a suburban cul-de-sac environment.
Pricing for Air Duct Cleaning in Kensington, CA
A full air duct cleaning for a Kensington home typically runs $450 – $950. Smaller ranches with a single return and short trunk lines fall toward the lower end. Split-levels and capes with multiple returns, flex takeoffs needing resealing, and significant oil-era residue run toward the higher end. Add a dryer vent cleaning and the total typically lands around $550 – $1,050. Add a video inspection before the job and you’re typically at $150 – $250. We give you one flat price per system in writing before any work begins, and that price does not change at the door. Call (980) 447-2498 for an exact quote. Estimates are free, and a live person answers.
We Also Serve Cities Near Kensington
Our crews serve Kensington and the surrounding communities across the Bay Area. If you’re outside the village, we also provide Air Duct Cleaning in Los Angeles, San Diego, San Jose, and San Francisco. For Kensington homeowners specifically, Air Duct Cleaning in Kensington is what we do day in and day out, with the same written price and the same Threshold Standard on every job.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington 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 Kensington
Every 3 to 5 years is realistic for Kensington’s rural, wood-heat, oil-era housing stock, compared to the 5 to 7 year interval that’s often quoted for newer suburban homes with sealed flex duct systems. Dust and pollen loading from unpaved roads and open land, plus the lingering oil-era residue in original galvanized trunks, shortens the interval meaningfully here. If you have pets, wood heat, or a long unpaved drive, lean toward 3 years. Call (980) 447-2498 for an honest assessment of what your system actually needs.
It involves source removal from the trunk and branch runs, not just a register-level vacuum. We establish negative pressure with HEPA filtration, agitate the galvanized walls mechanically to break loose oil-era residue and caked dust, clean the return and supply sides separately, then inspect and reseal any leaking seams or flex takeoffs. A camera inspection before and after shows you what was removed. The original 1960s galvanized trunk is thick and cleanable; the problem is the unsealed 1990s retrofits that were added on top of it.
Because the lower Connecticut River Valley’s humid summers saturate basement air, and Kensington’s original return-air seams were never taped or mastic-sealed. The blower’s negative pressure pulls that humid air into the return ducts, where dust accumulates on the moist lining and mold establishes between heating seasons. The fix is not just cleaning; it’s resealing the returns so the moisture stops entering the system. Call (980) 447-2498 and we’ll inspect the return side with a camera before recommending any cleaning.
Yes. Many Kensington properties have detached garages, workshops, or mother-in-law units with separate duct systems or direct vent runs, and those systems are often worse off than the main house because they were never on anyone’s maintenance schedule. We price outbuilding systems separately, usually $200 – $450 depending on size and accessibility. The same Threshold Standard applies: written price before work, verified technician at the door, and the 365-Day Done Right Promise in writing.
No. Air Duct Cleaning and dryer vent cleaning are separate services, and we price them separately so you know exactly what you’re paying for. However, most Kensington homeowners schedule both at once because the dryer vent in these older homes is often a long, narrow run through a basement or crawl space, and lint accumulation there is a genuine fire risk. Adding dryer vent cleaning to a duct cleaning job typically adds $100 – $180. Call (980) 447-2498 and we’ll give you a written price for both before anything is scheduled.
Get a Written Price for Air Duct Cleaning in Kensington
You’ll know exactly what the job costs before any equipment comes off the truck. You’ll know the name and face of the technician before they arrive. And you’ll have the 365-Day Done Right Promise in writing. That’s how we’ve worked in Kensington since 2004, and it’s how we’ll work on your home. Call (980) 447-2498 today and speak directly to a live person. We’ll answer your questions, schedule a camera inspection if you want one, and put the price in writing before you commit to anything.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Kensington since 2004.