Independent testing · Bay Area & San Diego
Indoor air quality testing from $445, lab result in 24 hours
Indoor air quality testing logs calibrated CO₂, carbon monoxide, PM2.5, PM10, temperature and humidity readings room by room and sends VOC and formaldehyde samples to an accredited laboratory, so a complaint about stuffy, smoky or chemical-smelling air becomes a numbered baseline.
Instant price check
What your test will cost
What do you need tested?
Testing only. We report what the accredited lab finds and never bid the removal or remediation work.
Accredited lab
Third-party analysis
Testing only
No removal sales, ever
Same-day visits
Fast written results
Chain of custody
Tracked from start to finish
What we sample
- CO₂ and carbon monoxide by room to test ventilation and combustion
- PM2.5 and PM10 particulate readings during occupied hours
- VOC sorbent-tube or badge samples for solvents and new-build off-gassing
- Formaldehyde cassettes near new cabinetry, flooring or laminate
- Temperature and relative-humidity profile that explains the readings
- Supply, return and outdoor comparison points at the HVAC system
When people call us
- Headaches, stuffiness or throat irritation that clear when people leave
- New flooring, cabinets, paint or furniture with a chemical smell
- Wildfire smoke intrusion or a nearby construction or traffic source
- A classroom, clinic or office with a ventilation complaint
- A landlord or employer needs a documented baseline
What the written report contains
- Room-by-room readings with the time each was taken
- Laboratory VOC and formaldehyde concentrations
- Outdoor comparison values for the same period
- Plain-language interpretation with the applicable guideline value
Other tests we run on the same visit
- Asbestos testing — from $425
- Mold testing — from $395
- Lead paint testing — from $425
Structured summary
Indoor air quality testing — the facts
| Service | Indoor air quality testing — sample collection, accredited laboratory analysis and a written result. We never sell removal or remediation work. |
|---|---|
| Starting price | $445, laboratory analysis included. Quoted before anyone is dispatched. |
| Laboratory method | Calibrated readings for CO₂, CO, PM2.5, PM10, temperature and relative humidity, plus laboratory analysis of VOC sorbent-tube or badge samples and formaldehyde cassettes |
| Turnaround | On-site readings the same visit, written laboratory VOC and formaldehyde results within 24–72 hours |
| Rating | 5.0 out of 5 from 76 verified customer reviews. |
| Contact | (510) 340-7791 · orders@clearguardenvironmental.com |
The steps
How a sampling visit runs
01
Tell us what you're about to disturb
Call, text a photo, or fill out the form. We identify the suspect materials, estimate the sample count, and lock in your flat price before anyone is dispatched.
02
A certified inspector collects the samples safely
Each distinct material is wetted down, a coin-sized piece is cut, sealed, labeled and logged under chain of custody. The mark left behind is smaller than a light-switch plate, and the space is left clean.
03
An accredited lab runs the PLM analysis
Samples are examined by Polarized Light Microscopy with dispersion staining — the EPA-recognized method for bulk building materials — with point counting available for borderline results.
04
You get a written report within 24 hours
A PDF lists every sample location, the analytical method, the fiber type detected and the reported percentage.
Independence
A company should not test the material it hopes to remove.
We collect and test material. ClearGuard does not sell removal work, keeping the finding independent. An abatement crew offering a "free inspection" is running a sales call with a lab form attached. We only sell the test, so a clean result and a positive result pay us exactly the same.
- No removal bids, no upsell, no referral kickback
- Every sample goes to an independent, accredited laboratory
- You get material names and percentages, not a vague pass or fail
- If a result is positive, we point you to licensed local abatement crews and exit the job
FAQ
Indoor air quality testing questions
How much does indoor air quality testing cost?
Indoor air quality testing starts at $445, which covers the visit, calibrated room-by-room readings and the first laboratory VOC or formaldehyde sample. Additional sample points are quoted before the visit.
What does an air quality test actually measure?
Calibrated CO₂, carbon monoxide, PM2.5, PM10, temperature and humidity on site, plus laboratory VOC and formaldehyde results. Asbestos and mold are separate tests with their own laboratory methods.
Can one visit cover air quality and mold?
Yes. A combined visit is common, and both sets of samples travel under the same chain of custody. The quote is shown before anyone is dispatched.