Air Quality Testing · Arlington, WA
Air Quality Testing in Arlington, WA — Know What You Are Breathing
Headaches that ease when you leave the house raise a fair question about your indoor air. So does a stale smell after last winter's flood. TDC Clean & Dry tests Arlington homes for airborne mold from our Stanwood base. The lab results show what is in the air and how it compares with outside.
Local conditions
Why Arlington air can hold mold spores.
Mold spores are always in outdoor air, so the question is never whether any are present. It is whether the air inside your home carries more, or different kinds, than the air outside. Air quality testing answers that with numbers instead of guesses.
Arlington gives spores plenty of chances to multiply indoors. The city's NOAA station averages about 49 inches of precipitation a year, and November alone brings more than 7 inches. Through those months windows stay shut, and damp air lingers in closed rooms.
Newer construction adds to it. Half of Arlington's homes were built in 1996 or later. Houses of that era tend to be sealed more tightly than older ones. Tight homes hold onto indoor air longer, including whatever a hidden leak is feeding.
Flooding is the other trigger. The Stillaguamish crested at 21.34 feet in Arlington in December 2023, and floodwater may carry bacteria and chemicals. After water comes in, testing helps confirm when a space is clean enough to use again.
Testing also has a job after remediation. A clearance test compares the treated area with outdoor air. You get proof the work succeeded instead of taking it on faith, and a record to keep.
The local data
Indoor air in Arlington, in four numbers.
Most of us spend far more time indoors than we realize. These figures show why indoor air deserves the same attention as the water that damages it.
- Share of time Americans spend indoors, on average1
- 90%
- How much higher some pollutants run indoors than outside1
- 2–5×
- Days a year Arlington records at least a tenth of an inch of rain2
- 119 days
- Indoor humidity EPA recommends to keep mold from growing3
- Under 60%
Arlington's median home dates from 1996, when tighter building became the norm.4 In a well-sealed house, a damp crawl space can shape the air in every room above it. That is why our testing starts with moisture, not just a sample pump. A result is only useful when you also know what is causing it.
Highest: Nov at 7.15 in. Lowest: Jul at 1.15 in.
View data table
| Month | in |
|---|---|
| Jan | 5.92 |
| Feb | 4.42 |
| Mar | 5 |
| Apr | 4.34 |
| May | 3.43 |
| Jun | 2.66 |
| Jul | 1.15 |
| Aug | 1.34 |
| Sep | 2.49 |
| Oct | 4.94 |
| Nov | 7.15 |
| Dec | 6.15 |
Sources
- 1. U.S. EPA, Report on the Environment: Indoor Air Quality (current)
- 2. NOAA NCEI, U.S. Climate Normals, Arlington, WA (station USC00450257) (1991–2020 normals)
- 3. U.S. EPA, A Brief Guide to Mold, Moisture and Your Home (current guidance)
- 4. U.S. Census Bureau, American Community Survey 5-year estimates, Arlington city, WA (2024)
Wondering about the air after a leak or flood?
A test replaces worry with lab results you can read. We explain what the numbers mean for your home and whether anything needs to be done.
Our process
How our air testing works in Arlington.
Good air testing is about comparison, not a single number. Every Arlington visit follows the same sequence, so results from one room can be trusted against another.
- 01
An outdoor sample sets the baseline
After the 22-minute drive from Stanwood, the first sample comes from outside your home. Arlington's outdoor spore levels shift with the season, so the baseline has to be taken the same day.
- 02
Indoor samples where people live and where water sits
We sample the rooms you use most and the spaces most likely to hold moisture. In a 1990s Kent Prairie home, that often means the room above the crawl space.
- 03
Surface samples on anything suspicious
Stains, spotting or discolored materials get a surface sample alongside the air readings. Together they show both what is growing and what is circulating.
- 04
Moisture readings to explain the results
Meters and thermal imaging show where water is feeding any growth the lab finds. Numbers without a moisture source would leave you with a result but no fix.
- 05
Lab results, explained in plain words
An independent lab analyzes the samples, and we walk you through the comparison with outdoor air. If levels are normal, you hear that too, with no work pushed on you.
Warning signs
When Arlington homes should get air tested.
Air testing is most useful when something has changed or a decision depends on the answer. These are the situations where it earns its place.
After Stillaguamish floodwater came inside
Floodwater may carry bacteria and chemicals, and wet materials can release spores for weeks. Testing helps confirm when a flooded room is ready to live in again.
Symptoms that ease when you leave home
Stuffiness or headaches that fade at work and return at home are worth investigating. Talk with a doctor about symptoms, and test the air to rule the house in or out.
A musty smell every wet season
If the odor returns each November, Arlington's wettest month, something is growing when moisture rises. Air samples show whether spores are reaching the living space.
Before closing on an Arlington home
Most local homes were built from 1990 to 2009, and their crawl spaces rarely get sampled during a sale. A test gives buyers and sellers a clear picture before money changes hands.
After mold remediation is finished
A clearance test compares the treated area with outdoor air. It turns the end of a remediation job into something you can verify instead of trusting.
Why us
Why Arlington homeowners choose our air testing.
Test results are only useful if they lead to a clear next step. Here is how we keep ours practical for Arlington homes.
Same-day outdoor baselines for Arlington air
Every indoor result is compared with an outdoor sample taken the same visit. That matters here, where spore counts swing between the wet and dry seasons.
Testing tied to a moisture search
We pair samples with meters and thermal imaging, so any high result comes with a likely source. Arlington's long wet season usually means a moisture cause is hiding somewhere.
IICRC-certified techs 22 minutes away
Our certified technicians work from Stanwood, close enough for a return clearance test after any cleanup. You deal with the same people from first sample to final result.
Honest answers, even when the air is fine
If the lab shows normal levels, we tell you and stop there. Arlington homeowners get results they can use, not a reason to buy a service they do not need.
Around Arlington
Air testing across Arlington.
Where we sample depends on how a house is built and what it has been through. These are the starting points in each part of town.
Old Town
Older homes near Olympic Avenue breathe differently from new ones, with more drafts and less vapor control. We sample basements and lower rooms where damp tends to settle.
Gleneagle
Larger homes around the golf course often share air across open floor plans. A sample on each level shows whether one problem area is affecting the rest of the house. That keeps any fix focused on the right floor.
Kent Prairie
Many homes on this level ground sit over crawl spaces. The rooms directly above get priority, since crawl space air can rise into the living area.
Smokey Point
Near I-5 and State Route 531, we test offices and shops as well as homes. Tenants and owners both benefit from a documented baseline. It settles questions quickly if a leak happens later.
Arlington Heights
Valley properties east of town took floodwater in December 2023. Testing there confirms whether flooded spaces have truly recovered. Outbuildings and garages that stored belongings during the flood are worth sampling too.
Arlington FAQ
Air Quality Testing questions in Arlington, WA
Straight answers to the questions Arlington homeowners ask most about air quality testing. If yours is not covered here, call and ask the crew directly.
What does air quality testing check for?
Our testing focuses on mold, using air and surface samples analyzed by a lab and compared with outdoor air. It does not replace radon or carbon monoxide testing, which need their own devices.
Is indoor mold testing worth it if I can already see mold?
Often not, because visible mold should simply be removed and its moisture source fixed. Testing earns its keep when the mold is hidden, after a flood or to confirm a cleanup worked.
How are the results compared?
Indoor samples are measured against an outdoor sample taken the same day. Levels well above outdoor air, or different types of mold inside, point to a source in the home.
Can you test the air after mold remediation?
Yes. A clearance test after the work compares the treated area with outdoor air, giving you documented proof the remediation succeeded.
Do you test rental properties and businesses in Arlington?
Yes. Landlords, tenants and business owners use testing to document conditions, especially after a leak or the river flooding nearby.
How long do air test results take?
Samples go to an independent lab, so results are not instant. We tell you the expected turnaround when we take the samples and call you to go over the findings once they arrive.
Reviews
What local homeowners say.
Real reviews from real clients on our Google Business Profile — unedited.
Get help now
Breathe easier in your Arlington home.
Call (206) 719-4508 or book online. We will sample the air, compare it with outside and explain exactly what the results mean.
(206) 719-450824/7 emergency line · Monday – Sunday 8:00 am – 4:00 pm · Free inspections
Schedule a Free Inspection
Tell us what is going on and we will get back to you as soon as possible. If water is coming in right now, call instead — it's faster.