Service
Mold Air Testing
Mold spores are always in outdoor air. Air testing compares what's inside with what's outside: if indoor counts are higher or show different types, that points to an indoor source worth finding.
This page describes mold air testing at our main San Diego location, Pro Plus Mold Inspection. Call (619) 935-5995 to schedule.
When it's useful
- Musty smells without visible mold
- Environmental documentation of a suspected mold concern
- Clearance after remediation
What we do
- 1Outdoor control sample
- 2Indoor samples in suspect and comparison rooms
- 3Laboratory spore analysis
- 4Plain-language results
Inspection scope
- A visual check of the area being tested, so samples are taken in the right places
- Moisture readings around the area being sampled
- Sample locations chosen around your concern, plus an outdoor reference for air samples
Sampling options
- Air sampling: outdoor comparison samples may inform interpretation as appropriate to the sampling plan, alongside site observations.
- Surface sampling: swab or tape-lift samples characterize material collected at a specified surface; outdoor air comparisons do not apply.
- Samples are sent to a laboratory for analysis.
What you receive
- A walkthrough of what we found while we're on site, when you're available
- A written summary of observations, moisture readings, and likely moisture sources
- Laboratory results, if samples were taken
- Plain-language next steps, including when no further action is needed
Limitations
- We inspect accessible areas only. We don't open walls, move heavy furniture, or remove finishes unless agreed in advance.
- Thermal imaging shows temperature differences, not mold. Readings are confirmed with a moisture meter.
- Sampling results are limited to the method, time and location sampled; they cannot establish whole-building safety or the absence of hidden mold.
- Inspection and testing cannot diagnose illness, determine the cause of symptoms, or rule out a medical condition. Direct health questions to qualified medical professionals.
- There are no EPA or federal airborne mold limits. Sampling cannot establish compliance with federal mold standards or guarantee health safety.
- Findings reflect accessible areas and conditions during the visit; they cannot guarantee that all hidden mold is found or that future conditions remain unchanged.
Mold Air Testing questions
What do air sample results tell me?
They show whether the types and amounts of spores indoors look unusual compared with outdoor air at the same time. They don't pinpoint where growth is. That's what the inspection is for.
Can testing tell me if mold is “safe”?
No. There are no universal safe limits for mold spores. Air samples may use outdoor comparisons as appropriate to the sampling plan alongside site observations; surface samples characterize the collected material. Results are method, time and location limited and cannot establish whole-building safety or the absence of hidden mold.
Related services
Indoor Air Quality Testing
Indoor air quality testing focused on mold spores and the moisture conditions that affect the air you breathe.
Learn moreSurface Mold Testing — Swab & Tape Lift
Swab and tape-lift samples identify what is growing on a specific surface.
Learn moreMold Testing
Laboratory analysis of air and surface mold samples within an agreed sampling plan, with method-, time- and location-limited findings.
Learn moreOther Pro Plus locations
This service is listed for our San Diego location. Availability at other Pro Plus Mold Inspection locations isn't confirmed. Call the location you need, or see the location directory.
Book mold air testing in San Diego
Talk to an inspector or send us a quote request.