Air Duct Cleaning in Sunnyvale - One Flat Price, Before-and-After Photos

Air Duct Cleaning in Sunnyvale, CA

Most Sunnyvale homes were built in the 1960s and 70s for Lockheed, Westinghouse, and early semiconductor workers, which means the ductwork behind those walls is now 50 to 60 years old. That matters because the dominant housing type here is the slab-foundation ranch with ducts running through attics that hit 130°F in summer, baking flex-duct liners until they crack and collapse inward. The service Sunnyvale homeowners call us about most is dryer vent cleaning, usually after a dryer takes two cycles to finish a load or a vent hood stops flapping. If your home’s ducts have never been inspected or cleaned, call CleanRun Air Duct Cleaning at (806) 606-6902 and we’ll put the camera in first.

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Why Sunnyvale Homes Are Different

Sunnyvale’s mild Mediterranean climate keeps HVAC systems idle for long stretches. That sounds good, but it means dust and fine particulate settle undisturbed in duct runs for months between heating seasons. Then wildfire smoke arrives. When Northern California fires push AQI readings above 150 in Sunnyvale, smoke channels through the Diablo Range gaps, residents seal windows, and systems run nonstop, driving dense PM2.5 particulate deep into ductwork within days. We see this pattern repeatedly in older tracts like Lakewood, where the original 1960s sheet-metal supply trunk is still in place under three generations of furnace replacements, covered in layers of foil tape and mastic over mastic. At least one branch run usually has a collapsed flex-duct inner liner that has silently reduced airflow for years.

Another local factor: many Sunnyvale ranch homes have had two or three furnace upgrades while keeping their original sheet-metal trunk lines. That creates hybrid systems with mismatched materials, amateur patch jobs, and debris traps that make cleaning difficult without partial disassembly. The attics themselves accelerate the problem. Summer temperatures regularly exceed 130°F, degrading flex-duct insulation and inner liners faster than in coastal or inland cities.

Our Main Sunnyvale Services

Two services dominate our workload in Sunnyvale: full air duct cleaning and HVAC cleaning. Both require the same evidence-first approach, because older duct systems here hide surprises like deteriorated fiberglass duct board and collapsed flex-duct liners that no amount of surface vacuuming will address.

Air Duct Cleaning in Sunnyvale

Sunnyvale’s 1960s and 70s ranch homes often have original ductwork with deteriorating fiberglass duct board and aged mastic sealants that shed particles into the airstream. Our negative-pressure extraction process pulls debris from supply and return runs while the camera documents what was actually inside, before and after. This is the service that reveals what three furnace replacements and five decades of DIY patches have left behind. Air Duct Cleaning in Sunnyvale runs one flat price per system, written down before a single panel comes off.

HVAC Cleaning in Sunnyvale

In Sunnyvale, HVAC cleaning means more than coil cleaning. It means addressing the full path air takes through a system that has survived multiple furnace swaps while keeping its original trunk lines. Blower wheels, evaporator coils, plenums, and return drops all accumulate the same fine dust and wildfire smoke particulate that sits in the ducts. For Sunnyvale homeowners who run systems continuously during fire season, this service directly addresses what those weeks of heavy use leave behind. HVAC Cleaning in Sunnyvale follows the same written-price rule: the quote is in your hand before work starts.

Before

After

Dryer Vent Cleaning in Sunnyvale

Dryer vent cleaning in Sunnyvale is a scheduled job with a written price before work starts, not a $79 coupon that turns into a far larger invoice once the van is on the driveway. In Sunnyvale’s slab-foundation ranch homes, dryer vents are often long runs that exit through the attic or roof, collecting lint in elbows and horizontal sections over years of use. When we run the camera down a vent in an older Lakewood or Cherry Chase home, we frequently find a 3-inch debris build-up at the first elbow and a vent hood that has not opened properly in months. That is a fire hazard and a major airflow restriction, and it is why every CleanRun job includes a before-and-after photo record of the inside of the vent, delivered at the end of the visit. Learn more about how we work on our Dryer Vent Cleaning page.

Dryer Vent Inspection

Signs you need it

Your dryer takes two or more cycles to dry a standard load, or the vent hood outside no longer opens when the dryer runs.

What it costs in Sunnyvale

A dryer vent inspection in Sunnyvale typically costs $85-$145, and we photograph the inside of the vent so you can see what the camera saw.

How we do it

We run a camera down the full vent run from the dryer connection to the exterior termination, measure airflow at the hood, and document every restriction in writing.

Vent Cleaning

Signs you need it

Visible lint builds up around the dryer connection, the laundry room gets warm during cycles, or you have not had the vent cleaned in more than two years.

What it costs in Sunnyvale

Full dryer vent cleaning in Sunnyvale runs $130-$220 depending on run length and accessibility, and that price is written down before any work begins.

How we do it

We use a rotary brush system with negative-pressure collection at the dryer connection, then run the camera again to confirm the full run is clear.

Lint Removal

Signs you need it

You see lint on the exterior vent hood, or the dryer is leaving clothes damp despite a clean lint screen.

What it costs in Sunnyvale

Lint removal as part of a full vent cleaning is included in the $130-$220 price, not charged as a separate line item.

How we do it

We clear the full vent run to the exterior, remove the lint from the termination point, and verify airflow at the hood with a manometer reading.

Vent Rerouting

Signs you need it

Your current vent run is excessively long, has too many elbows, or terminates in a location that traps heat and moisture.

What it costs in Sunnyvale

Vent rerouting in Sunnyvale starts at $250 and rises with run length and attic access difficulty, always quoted in writing first.

How we do it

We shorten the run, reduce the number of elbows, and reposition the termination point so the next cleaning is simpler and the vent flows properly.

Bird Guard Installation

Signs you need it

You hear birds near the vent termination or find nesting material in the exterior hood.

What it costs in Sunnyvale

A bird guard installed at the vent termination is $75-$110 in Sunnyvale, including the guard and the labor to mount it.

How we do it

We install a galvanized or stainless guard over the exterior termination, then photograph it so you have a record of the completed work.

What Dryer Vent Cleaning Costs in Sunnyvale

Prices move when the vent run is longer than fifteen feet, exits through a roof, or has been patched by previous work. CleanRun’s rule is one written price per job before any panel comes off, under Haven Standard Clause 1. That number is the number you pay.

How much does dryer vent cleaning cost in Sunnyvale?

Dryer vent cleaning in Sunnyvale typically costs $130-$220 for a standard residential run. Inspection alone is $85-$145. Call (806) 606-6902 for an exact written quote. Estimates are free.

Why are some dryer vent cleaning quotes so much cheaper?

Cheaper quotes often cover a quick vacuum of the first few feet of a vent, not the full run to the exterior. CleanRun photographs the entire run before and after, and the written price reflects that documented scope. Call (806) 606-6902 for a flat system price.

Duct Repair & Sealing in Sunnyvale

In Sunnyvale’s 50- and 60-year-old ranch homes, the original sheet-metal trunk lines have survived decades of furnace replacements while the branch runs and connections have not. The result is a patchwork of foil tape over cracked mastic, sagging flex duct, and joints that have separated in attics that bake at 130°F every summer. Those gaps pull attic air into the system, sending dust, insulation fibers, and whatever else is up there straight into the rooms you heat and cool. Duct repair and sealing in Sunnyvale means going joint by joint and run by run, finding the leaks with pressure testing, and sealing them with materials that will outlast the next three heat waves. For the full scope of how it works, see our Duct Repair & Sealing page.

Duct Sealing

Signs you need it

Rooms at the end of the run are consistently hotter or cooler than the rest of the house, or your utility bills have risen without a change in usage.

What it costs in Sunnyvale

Duct sealing in Sunnyvale typically runs $350-$800 depending on the number of accessible leaks and whether we use tape, mastic, or both.

How we do it

We pressurize the duct system to locate leaks, then seal each one with mastic or foil tape and re-test to confirm the improvement in airflow.

Flex Duct Repair

Signs you need it

You notice a damp or musty smell in one room, or a branch run has visible sagging or kinking in the attic.

What it costs in Sunnyvale

Replacing a collapsed or damaged flex-duct liner in a Sunnyvale home usually falls between $150 and $350 per branch run.

How we do it

We remove the failed section, replace it with properly sized flex duct, and seal both connections before photographing the completed work.

Metal Duct Repair

Signs you need it

You hear rattling or banging from the ductwork when the fan cycles, or the camera shows separation at a trunk-line joint.

What it costs in Sunnyvale

Metal duct repair in Sunnyvale starts around $200 and scales with the length of damage and the difficulty of reaching the affected section.

How we do it

We re-align separated sections, fasten with screws and sealant, then wrap any gaps with foil tape and mastic before taking the after photo.

Duct Insulation

Signs you need it

Your ducts sweat in summer, or you can feel temperature loss through exposed metal in the attic.

What it costs in Sunnyvale

Insulating exposed ductwork in a Sunnyvale attic typically costs $250-$600 depending on how much of the system is accessible.

How we do it

We wrap exposed runs with R-6 or R-8 duct wrap, seal the seams, and document the coverage with photos.

Mastic Sealant

Signs you need it

Your existing mastic is cracked, dried out, or peeling away from the joint, especially on the original 1960s trunk lines.

What it costs in Sunnyvale

Re-sealing joints with fresh mastic is part of the $350-$800 duct sealing range, not a separate line item.

How we do it

We clean off the old failed sealant, apply fresh mastic to the joint, and give it the full cure time before re-testing the system pressure.

What Duct Repair & Sealing Costs in Sunnyvale

Attic access is the main cost driver in Sunnyvale. Low-slope roofs over slab foundations create tight, hot attic spaces that slow the work and wear out materials faster. Every quote is written before work starts, under Haven Standard Clause 1, and that written number is the number you pay.

How do I know my ducts are actually leaking?

A pressure test with the fan running shows exactly which joints are pulling attic air. We document each leak with photos, then re-test after sealing. Call (806) 606-6902 for a written pressure-test quote.

Why did my ducts fail after only ten years?

In Sunnyvale attics that regularly exceed 130°F, flex-duct liners and mastic age faster than in conditioned spaces. The heat oxidizes the materials. Sealing with heat-rated products and replacing failed runs is the long-term fix. Call (806) 606-6902 for an exact price.

Air Quality & Sanitizing in Sunnyvale

Sunnyvale homeowners in health-conscious tech households ask for air quality work after wildfire season, after a remodel, or when someone in the house develops unexplained respiratory symptoms. What we typically find in older homes here is a mix of fine dust, pet dander, and the residue from decades of deteriorating fiberglass duct board, all recirculating every time the system runs. During fire events, when AQI climbs above 150 and the house is sealed tight, that mix absorbs smoke particulate and stays in the ducts. Air quality and sanitizing work in Sunnyvale means treating the system so that what comes out of the registers is measurably cleaner. The service scope is documented on our Air Quality & Sanitizing page.

Mold Treatment

Signs you need it

You smell a musty odor when the fan cycles, or the camera shows visible mold growth on duct surfaces or the interior of the plenum.

What it costs in Sunnyvale

Mold treatment in Sunnyvale ductwork typically runs $300-$750 depending on the affected area and the product required.

How we do it

We use an EPA-registered antimicrobial applied to the affected surfaces, then photograph the treated areas and give you a written treatment record.

Bacteria Sanitizing

Signs you need it

Someone in the home has persistent allergies or recurring respiratory irritation that improves when the system is off.

What it costs in Sunnyvale

Whole-system bacteria sanitizing in Sunnyvale runs $350-$700, applied after the ducts are cleaned and the blower cavity is accessed.

How we do it

We fog the supply and return sides with a sanitizer while the system runs, then document the application and provide the product name in writing.

Odor Removal

Signs you need it

A persistent smell from the ducts that returns after cleaning, often from pet dander, cooking residue, or wildfire smoke trapped in porous surfaces.

What it costs in Sunnyvale

Odor removal as a focused treatment is $250-$450 in Sunnyvale, and it is most effective after the underlying source has been cleaned.

How we do it

We treat the duct surfaces and the plenum with a deodorizing agent while the blower circulates air, then re-inspect with the camera.

UV Light Installation

Signs you need it

You have recurring microbial growth on the coil or in the plenum despite cleaning.

What it costs in Sunnyvale

UV light installation in a Sunnyvale HVAC system starts at $600 and includes the unit, wiring, and mounting inside the plenum.

How we do it

We install a UV-C lamp inside the supply plenum or above the coil using a Honeywell unit, then photograph the installation and verify operation.

Air Purifier Install

Signs you need it

You want whole-house filtration for wildfire smoke and fine particulate beyond what a throwaway filter can capture.

What it costs in Sunnyvale

Whole-house air purifier installation in Sunnyvale typically runs $400-$900 depending on the unit and the duct modifications required.

How we do it

We mount the purifier in the return plenum using Guardsman or Aprilaire equipment, balance airflow, and photograph the finished install.

What Air Quality & Sanitizing Costs in Sunnyvale

Sunnyvale’s wildfire smoke exposure is the main reason prices cluster where they do. The PM2.5 load after a bad fire season means treatments must reach deeper into the system to be effective. Every service gets a written price first, no exceptions, and the photo record shows exactly what was treated.

Do I need air quality treatment after wildfire season?

If your system ran while the house was sealed during an AQI spike above 150, yes, you likely have smoke particulate in the ductwork. A camera inspection shows the load. Call (806) 606-6902 for a written inspection price.

How do I know the sanitizing work was actually done?

CleanRun photographs every treated area before and after and provides a written record of the product used, the date, and the scope. That documentation is your proof the work happened. Call (806) 606-6902 to schedule.

Brands We Service in Sunnyvale

We work on all major brands found in Sunnyvale homes, including Rotobrush, Nikro, and Honeywell equipment. Our technicians carry common replacement parts and filters for these systems, which keeps most Sunnyvale jobs on a single-visit schedule. Read more on our brands page.

Pricing for Air Duct Cleaning in Sunnyvale, CA

Neighborhoods We Serve in Sunnyvale

Our crews work throughout Sunnyvale, from the older 1960s tracts to the newer infill developments. We schedule by neighborhood to keep drive times short and arrival windows accurate. Most jobs are completed in a single visit because our techs carry the common parts for Sunnyvale’s typical duct systems.

• Lakewood
• Cherry Chase
• Sunnyvale West
• Ponderosa
• Ortega

Service Area - Cities Near Sunnyvale

CleanRun serves Sunnyvale and the surrounding Santa Clara Valley cities. Homeowners in Mountain View, CA, Santa Clara, CA, Cupertino, CA, and Los Altos, CA get the same written-price guarantee and documented photo record on every job. Dispatch and scheduling are coordinated from our San Francisco Bay Area office.

FAQs About Air Duct Cleaning in Sunnyvale