Residential Duct Cleaning in King & Snohomish County | Endeavor Heating and Cooling LLC
Duct cleaning

Vent-by-vent duct cleaning for a healthier home.

We clean each supply and return vent from inside the home using a rotary brush, drill, and Shop-Vac. Grilles are removed, the vent opening and accessible duct section are vacuumed and brushed, then the grille is cleaned and reinstalled.

Transparent per-vent pricing • Serving King & Snohomish County • Licensed, bonded, and insured.

Book duct cleaning online
Prefer to talk first? Call (425) 599-3021 during business hours.
Method Rotary brush + Shop-Vac
Access From inside the home
Visit length Most homes 2–4 hours

What to expect

A clear, step-by-step outline of how your visit will go from start to finish.

  • Arrival & walkthrough: We review the areas we'll be working in, count vents together, confirm pricing, and answer any initial questions.
  • Home protection setup: Drop cloths are placed in work areas, and painter’s tape/plastic are used for high vents when needed.
  • Vent-by-vent cleaning: Each vent is handled individually — remove the grille, vacuum the opening, rotary-brush the accessible duct, clean the grille, and reinstall.
  • Return cleaning: Returns take longer and collect more dust; we’ll access, vacuum, and brush what is reachable from inside the home.
  • Fogging (optional): If selected, we’ll apply an EPA‑approved sanitizing fog through the return after cleaning is finished.
  • Final walkthrough: We show you what we found, point out anything unusual (damaged ducts, gaps, heavy buildup), and discuss next steps if needed.
  • Cleanup: Drop cloths and protection are removed, tools are packed up, and the workspace is left tidy.

Inside the duct — before & after

Real before-and-after photos from residential duct cleaning visits.

Before duct cleaning photo – heavy dust buildup inside a residential supply duct
Before cleaning: heavy dust and debris coating the duct interior.
After duct cleaning photo – residential duct interior cleared of dust
After cleaning: duct interior cleared and visibly cleaner.
Extreme case – severely clogged round duct packed with lint after years without filter changes
Extreme case: about 10 years of buildup from infrequent filter replacement — a round duct completely packed with lint and debris.

Standard pricing (per vent)

Clear, predictable pricing based on vent type and access.

Floor supply vents

$25 per vent

Standard floor registers throughout the home.

  • Remove grille, vacuum opening
  • Rotary brush clean accessible run
  • Clean and reinstall grille

Ceiling & wall supply vents

$35 per vent

Supply vents located on ceilings or walls.

  • Includes ladder setup if needed
  • Vacuum & rotary brush clean duct
  • Grille cleaned and reinstalled

Return vents

Starting at $65 per vent

Returns typically collect more dust and take more time to clean.

  • $65 per accessible return (no ladder)
  • $85 per return requiring ladder setup
  • Large trunks or multi-story returns quoted on site

Final pricing depends on the number of supply and return vents, ceiling height, and access around furniture and belongings. We’ll count vents with you and review pricing before we start.

No bait pricing, no surprise add-ons. We use clear per-vent pricing so you always know what you’re paying for before any work begins.

Typical project totals

Most homes land in this range once we count all the vents together.

Smaller home or condo

Usually $275 – $450

Example: 6–10 supply vents, 1 return vent.

  • 6–10 supply vents cleaned
  • 1 return vent cleaned
  • Optional fogging and filter replacement available

Larger single-family home

Usually $450 – $850

Example: 12–18 supply vents, 2–3 returns.

  • 12–18 supply vents cleaned
  • 2–3 return vents cleaned
  • Great to bundle with furnace maintenance

Add-on options

Optional upgrades that pair well with a duct cleaning visit.

Whole-home sanitizing fog treatment

$118 per system

EPA-approved sanitizing fog applied through the return after duct cleaning to help reduce odors and surface contaminants inside the ductwork. This treatment is completely optional and not required for a standard cleaning.

Filter replacement

$20–$35 per filter

Replace furnace or air handler filters while we’re on site. We’ll confirm your filter size before the visit. Unique or uncommon sizes may need to be special‑ordered and quoted separately.

  • $20 for standard 1-inch filters
  • $35 for 4-inch media filters

When duct cleaning makes sense

If we find heavy debris, mold, or duct damage, we’ll discuss other options.

What’s included

A clear outline of what this service covers.

  • Vent-by-vent cleaning from inside the home
  • Grille removal, cleaning, and reinstallation
  • Rotary brush and vacuum cleaning of accessible duct sections
  • Basic prep and protection of work areas

How often should ducts be cleaned?

General guidelines to help you decide how often to schedule this service.

Typical households

  • Every 2–4 years for most homes with standard use
  • Good time to pair with furnace or heat pump maintenance

Homes with higher dust or allergies

  • Every 1–2 years if you have pets, allergies, or recent remodel work
  • We can make recommendations based on what we see in your system

Who performs your duct cleaning?

Your visit is handled by a trained HVAC professional, not a coupon crew.

  • Duct cleaning performed by a licensed HVAC contractor
  • No high-pressure sales tactics or bait-and-switch offers
  • Clear explanations of what we’re doing and why

FAQ

Quick answers to common questions.

Do you clean the whole system?

We clean each vent from inside the home. If deeper trunk-line cleaning is needed, we’ll let you know.

How long does it take?

Most homes take 2–4 hours depending on vent count and ceiling heights.

Does this reduce dust?

It reduces buildup inside vents. Whole‑home dust issues may relate to filters or air leaks, which we can point out.

Why choose Endeavor for duct cleaning?

A local, licensed HVAC contractor focused on clear communication and careful work.

Locally owned & accountable

  • Licensed, bonded, and insured in Washington State
  • Owner-operated with a focus on long-term relationships

Clear, straightforward service

  • Upfront per-vent pricing with no bait-and-switch offers
  • Fully licensed HVAC contractor — not a coupon-based duct cleaning company

Service area

Providing residential duct cleaning throughout King and Snohomish County.

We regularly serve homeowners in Mill Creek, Bothell, Lynnwood, Everett, Mukilteo, Edmonds, Shoreline, Seattle, and nearby communities.