How Much Does Air Duct Cleaning Cost in Seattle? [2025 Data]

Air duct cleaning costs $431 on average in Seattle, but prices can range between $334 and $538. However, keep in mind that the Emerald City’s cost of living is well above the national average, so air duct cleaning costs will also run higher here.

Although Seattle enjoys milder weather in the winter and summer when HVAC systems are normally working their hardest, clean air ducts still play an essential role in your home’s air quality. Without them, air can’t circulate through your home. And since ducts filter out the impurities before we breathe anything in, cleaning them can combat the debris that accumulates over time. Let’s review the factors behind professional air duct cleaning costs and how to budget for your next project.

Air Duct Cleaning Cost Factors 

Well-functioning HVAC systems are important for maintaining air quality in Seattle homes, as well as keeping them temperate and comfortable. It’s a simple DIY task to change out the filter on a regular basis and to keep vents unobstructed, but cleaning the air duct system is a project that’s better left to the expertise and tools of a local duct-cleaning professional.

Here are the primary cost factors for duct cleaning in the Seattle area.

Total Square Footage of Home

The more ductwork you have, the more you'll pay for cleaning. Even though ductwork is measured in linear feet, some local air duct cleaners base their price on your property’s square footage (since the larger your home is, the more ductwork you'll have).

Number of Vents

As with ductwork, the more vents you have, the more it’ll cost to clean them. On average, vents cost $35 each to clean, with most homeowners paying between $25 and $50 per vent. To get a ballpark estimate for the cost of vent cleaning, count the vents in your home and multiply that by $35.

Here’s how the number of vents affects your air duct cleaning cost:

Type of Ductwork

If you have flex ducts, expect to pay toward the upper end of the range. Unlike metal ducts, flex ducts require special cleaning equipment, so you’ll pay more to clean them. Rigid metal ducts are easy to clean with a vacuum, air hose, or power brush, so they cost less to clean. 

Labor Cost

Most ductwork pros charge by the hour, with duct cleaning services priced between $90 and $125 per hour. Depending on the size of your home, the type of ductwork you have, and how accessible the ducts are, most cleaning jobs require three to eight hours of labor.

Accessibility

If you ensure that vents are easy to reach with vacuuming equipment, accessibility shouldn’t be a problem. But some ductwork designs make accessing them difficult, especially if you don’t have floor vents. If air duct technicians have to work harder or take additional steps to reach your vents, it can result in additional labor charges.

Inspections

Some vent problems, like noticeable mold or nests, don’t require an inspection before cleaning. However, if you aren’t sure about the state of your vents, consider arranging a professional inspection. These inspections are often bundled together as part of an HVAC inspection, which costs an average of $300 but can fall under $100 for simple systems.

Level of Cleanliness or Contamination

Duct cleaning is offered as a package with set labor costs, but extremely dirty jobs will cost extra. If the ducts have never been cleaned and need a lot of work to remove dust and buildup, expect additional fees.

Air Duct Cleaning Pro Costs

The above price ranges reflect the normal factors that determine air duct cleaning costs in Charlotte. However, should you require additional work for successful project completion, or if there are issues that require the work of additional professionals, you might see these extra costs added to your final bill.

Repairs

You’ll need ductwork repair if cleaning the ducts does not restore your HVAC system to its normal working order. While prices ultimately depend on your home’s size and the level of repairs needed, you can expect to pay between $290 and $1,160.

Permits

Homeowners do not need a permit for standard residential air duct cleaning projects in Seattle. However, you should only hire an HVAC pro in Seattle who is licensed and insured.

Sales Tax

When hiring a pro to clean your air ducts in Seattle, you’ll have to factor sales tax into the total price. With a rate of 10.35%, Seattle has one of the highest sales taxes in the country. This means that if your project is $3,000, you’ll have to pay an extra $310.50 for a total of $3,310.50. 

Additional Pros to Consider Hiring

Cleaning your air ducts might be a rather smooth process—or it might not be. The discovery of pests, asbestos, or mold lingering in your HVAC system must be addressed immediately, and doing so will certainly add to the costs of your project.

• Pest control costs: $129–$249

• Mold remediation costs: $1,008–$2,967

• Asbestos removal costs: $1,621–$3,975

In the fortunate event that there aren’t any problems with your air ducts and the cleaning process is straightforward, you can still choose to tack on additional services. These optional projects can increase the overall efficiency and performance of your home’s duct system: 

• Dryer vent cleaning costs: $126–$261

• Furnace cleaning costs: $70–$400

• Air duct sealing: $500–$4000

Does Air Duct Cleaning Increase Home Value?

Cleaning the ductwork in your home won’t increase your home value on its own. But even during the milder Seattle summers and winters, a well-functioning HVAC system is always a good thing, especially if you’re planning to put your home on the market. Home buyers will be relieved to know they likely won’t have to pay to fix any air duct issues as soon as they’ve moved in.

However, if you decide to completely replace an older HVAC system with an entirely new one that’s more energy efficient, you can expect to increase the value of your home by 5% to 7% with an ROI of 30%. Keep in mind that your actual home’s value increase and ROI will depend on the price and type of system you purchase.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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