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

Air Duct Cleaning in Kent, WA

Air duct cleaning in Kent usually costs between $425 and $1,550 for a whole-home system, and dryer vent cleaning runs $99 to $249. Homes on Kent’s East Hill, built mostly between 1978 and 1998, have flex ductwork now past the 30-year mark, and the Green River Valley’s fog-heavy moisture means clogged returns and mold colonization happen faster than they do up the hill in Renton or Federal Way. Call CleanRun Air Duct Cleaning at (806) 606-6902 for a written price before any work starts.

Call (806) 606-6902

Why Kent Homes Are Different

Kent sits on the floor and lower slopes of the Green River Valley, where cool marine air and valley fog pool from October through May. The sustained humidity works its way into return-air ducts, especially in homes with supply or return leaks pulling unconditioned air from crawl spaces or attics. What we find inside duct runs in the East Hill subdivisions is not standard dust; it is a damp, gray-brown matting that forms when condensation meets settled lint, pet hair, and pollen.

The housing stock tells the rest of the story. Most of Kent’s homes are tract builds from the late 1970s through the late 1990s, three and four bedrooms, two-story or split-level, with gas forced-air furnaces and flex-duct distribution systems now well past 20 years old. In the early-to-mid-1990s developments especially, flexible ducts were installed with minimal support strapping, so runs sag and develop low spots that trap standing debris and condensation. We photograph these sags on nearly every first visit. Older pockets near historic downtown Kent have mid-century ranch homes with rigid metal ductwork, which holds up longer but accumulates decades of fine dust that a standard system filter never catches.

The result is that duct cleaning in Kent is rarely a quick cosmetic pass. It is a targeted removal of biological growth, compacted debris at elbows, and sometimes a repair conversation when the camera shows a disconnected or crushed run. That is what the rest of this page covers.

Our Main Kent Services

Most Kent homeowners call us first for two things: full air duct cleaning and the broader HVAC cleaning that includes the blower wheel, coils, and plenum. Here is how those jobs look in Kent homes.

Air Duct Cleaning in Kent

Our Air Duct Cleaning in Kent service covers every supply run, return run, register, and the plenum. In East Hill homes with sagging flex duct, the camera work before and after is the difference between vacuum noise and actual extraction. We use negative-pressure equipment and document every run with photographs, so you can see the elbow that was blocked at the first turn. Read the full Kent air duct cleaning page for pricing by system size and the specific cleaning process.

HVAC Cleaning in Kent

Our HVAC Cleaning in Kent page covers the full system beyond the ducts: evaporator coil, blower wheel, condensate pan, heat exchanger if gas-fired, and the plenum interior. In Kent’s humid valley climate, the blower wheel picks up a fine paste of dust and moisture that reduces airflow. The dedicated page walks through the sub-jobs, the signs of a dirty blower, and what the work costs in Kent.

Before

After

Dryer Vent Cleaning in Kent

Dryer vent cleaning in Kent runs $89 to $299, and on East Hill the job is less about lint than about how that lint behaves. The valley humidity turns cotton and polyester fiber into a damp, heavy wad that clings to the inside of the vent wall, and in the sagging flex-duct homes built in the early 1990s, that wad settles in low spots and never clears itself. A dryer pushing into a partially blocked vent dries slower and pushes moist air into the wall cavity. For a full walkthrough of this service elsewhere in the region, see our Dryer Vent Cleaning hub.

Dryer Vent Inspection

Signs you need it

A load that used to dry in one cycle now needs two, the laundry room feels humid when the dryer runs, or the outside flap barely moves on a high setting.

What it costs in Kent

A Dryer Vent Inspection runs $49 to $99 in Kent homes, depending on access and vent length.

How we do it

We camera the full vent run from the dryer connection to the outside termination, measure airflow at the exit, and photograph any obstructions.

Lint Removal

Signs you need it

The dryer has not been vented out in more than two years, or the lint trap is full after every load even when you clean it between cycles.

What it costs in Kent

Full Lint Removal in Kent runs $89 to $190, depending on vent length and how packed the run is.

How we do it

We run a powered rotating brush the full length of the vent, then a high-suction negative-pressure extraction to pull loosened lint and debris out the termination point.

Vent Rerouting

Signs you need it

Your dryer vent runs more than 25 feet with multiple elbows, or it terminates under a deck, into a crawl space, or onto a covered patio.

What it costs in Kent

Rerouting a dryer vent in Kent runs $250 to $600, depending on the new termination location and wall construction.

How we do it

We reconfigure the vent path with rigid or semi-rigid duct, remove unnecessary elbows, and terminate outside in a code-compliant location.

Bird Guard Installation

Signs you need it

Birds are nesting at the outside vent termination, or you hear scratching from the wall near the dryer when the system is off.

What it costs in Kent

A bird guard in Kent runs $60 to $130 installed, including cleaning the first few feet of vent behind the old termination.

How we do it

We remove existing nesting material, clean the first section of the vent, and install a louvered or caged guard that blocks entry while allowing full airflow.

What Dryer Vent Cleaning Costs in Kent

How often should a dryer vent be cleaned in Kent?

Every 12 to 24 months, more often if the dryer vent is over 15 feet long or has multiple elbows. Kent’s humidity makes lint cling to walls faster than in drier neighboring cities. Call (806) 606-6902 and we will give you a written price.

Why does my dryer smell musty in Kent?

The vent holds moisture from valley fog, and damp lint grows bacteria that pushes odors back into the laundry area. Cleaning usually removes the smell, but we photograph the vent first to confirm what is in there. Call (806) 606-6902.

Duct Repair & Sealing in Kent

Duct repair and sealing in Kent runs between $190 and $500 per duct run, depending on condition, and in the valley’s humidity you cannot ignore this work. Every leak in a return duct pulls damp crawl space or attic air into the system, and every leak in a supply duct pushes conditioned air somewhere you are not paying to heat or cool. The East Hill flex-duct homes, with their sagging low spots, are the single most common place we find disconnected or torn runs. For the broader breakdown of this service outside Kent, see our Duct Repair & Sealing hub.

Duct Sealing

Signs you need it

Some rooms never reach the thermostat temperature, or you can feel air moving around the register frame even with the system off.

What it costs in Kent

Sealing a single duct run or plenum connection in Kent runs $190 to $500, with whole-system sealing in larger Kent homes running higher.

How we do it

We locate leaks by hand and with a smoke pencil, then apply mastic sealant or foil-backed tape at every seam, collar, and boot connection we find.

Flex Duct Repair

Signs you need it

You have a room that gets almost no airflow, or a section of flex duct visibly sags or kinks in the attic or crawl.

What it costs in Kent

Flex Duct Repair in Kent runs $150 to $400, depending on whether we patch, re-support, or replace the section.

How we do it

We remove the damaged flex section, install new R-6 or R-8 flex where needed, and strap runs at 4-foot intervals to prevent future sagging.

Duct Insulation

Signs you need it

Ducts run through an unconditioned attic or crawl, and you see moisture beading on the outside of the duct jacket in summer.

What it costs in Kent

Adding or replacing duct insulation in Kent runs $200 to $550 per run, depending on access.

How we do it

We wrap exposed runs in fiberglass with a vapor barrier, or replace frayed flex duct with new insulated flex of the correct R-value.

Mastic Sealant

Signs you need it

Old tape is peeling from the seams, or a previous repair uses duct tape that has dried and separated at the edges.

What it costs in Kent

Mastic-sealing the accessible duct seams in an average Kent three-bedroom home runs $300 to $900.

How we do it

We brush or trowel UL-listed water-based mastic over every accessible seam, boot, and collar, creating a permanent air seal.

What Duct Repair & Sealing Costs in Kent

Will duct sealing lower my energy bill in Kent?

Most Kent homes lose 10 to 30 percent of conditioned air to duct leaks, but the bigger local issue is the wet return air pulling in valley moisture. Sealing usually cuts both waste and humidity. Call (806) 606-6902 for a written price.

Why do my ducts keep sagging in my East Hill home?

Homes built in the early-to-mid 1990s in Kent often used flex duct with minimal support strapping, so plastic duct runs stretch and sag with age. Re-strapping and re-supporting the runs is part of standard repair. Call (806) 606-6902.

Air Quality & Sanitizing in Kent

Air quality and sanitizing work in Kent runs between $295 and $1,200, and the job here is shaped by the Green River Valley’s humidity and the aging flex ductwork in the East Hill subdivisions. The same damp conditions that grow mold in return ducts also sustain bacteria, must odors, and elevated spore counts in the air your family breathes. In homes built in the 1980s and 1990s, the duct interiors have had decades to accumulate organic material that feeds whatever grows. For the full service breakdown outside Kent, see our Air Quality & Sanitizing hub.

Mold Treatment

Signs you need it

A musty smell comes from the registers when the furnace blower kicks on, or visible dark staining appears inside a return boot.

What it costs in Kent

Mold treatment for ductwork in Kent runs $295 to $700 for a typical single-family home, depending on the number of affected runs.

How we do it

We clean the affected surfaces first, then apply an EPA-registered antimicrobial treatment to the duct interior and photograph the result.

Bacteria Sanitizing

Signs you need it

Kids and adults in the house get recurring sinus irritation, congestion, or unexplained allergy symptoms that improve when away from home.

What it costs in Kent

Whole-home bacteria sanitizing in Kent runs $250 to $550, usually paired with cleaning for best effect.

How we do it

We fog the duct system and plenum with a safe, EPA-registered sanitizer after the surfaces are clean, with documentation of the treatment.

Odor Removal

Signs you need it

A persistent smell from smoking, cooking oil, or a previous pet returns every time the system cycles, even after the source is gone.

What it costs in Kent

Odor removal in Kent runs $300 to $750, depending on the source and how long it has been embedded in the duct walls.

How we do it

We use an activated oxygen treatment or a thermal fogging process, depending on the odor type, and follow with a photocatalytic or oxidizer pass where needed.

UV Light Installation

Signs you need it

The coil area stays damp through Kent’s wet season, and you want ongoing mold and bacteria suppression without manual treatment.

What it costs in Kent

A UV light system installed in a Kent furnace runs $650 to $1,200, including the unit, installation, and electrical connection.

How we do it

We mount the UV lamp above the evaporator coil or in the return plenum, wired so the lamp cycles with the blower.

What Air Quality & Sanitizing Costs in Kent

Will sanitizing fix the musty smell in my Kent house?

If the smell comes from mold or bacteria inside the ducts, then yes, sanitizing after cleaning usually eliminates it permanently. We confirm with a photo record so you can see what was treated. Call (806) 606-6902.

Is air duct sanitizing safe for my family and pets?

The products we use are EPA-registered for occupied homes, and we ask that people and pets stay out of the immediate area during application and for one hour after. We document the product used on your written job record. Call (806) 606-6902.

Brands We Service in Kent

Our techs work on duct systems connected to most major HVAC brands, and we commonly service Honeywell and Aprilaire air quality products and filtration systems in Kent homes. Our vans carry a standard parts and filter inventory so most brands can be serviced same day without a parts run. If your system uses Abatement Technologies or Guardsman components, the tech will know before arrival and bring what is needed.

Pricing for Air Duct Cleaning in Kent, WA

Neighborhoods We Serve in Kent

We work throughout Kent, from the East Hill subdivisions to the older pockets near downtown and the valley-floor streets along the Green River. Our techs know the local construction eras and the failure patterns that come with them.

• East Hill
• Panther Lake
• Scenic Hill
• Downtown Kent
• Midway

Most cleanings and repairs in Kent are scheduled within three to seven business days, and smaller jobs like dryer vent cleaning can often be worked in sooner.

Service Area - Cities Near Kent

CleanRun also covers the surrounding South King County and Pierce County cities, including Renton, WA, Auburn, WA, Federal Way, WA, and Tacoma, WA. If you are on the edge of Kent or in one of those cities, call (806) 606-6902 and we will confirm coverage and a schedule window.

FAQs About Air Duct Cleaning in Kent