24H Mold Inspection
San Jose24/7 EMERGENCY(408) 965-9979
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Mold Testing

Air Testing

Mold air testing detects airborne spores and assesses indoor air quality, even in spaces where no visible contamination has shown up yet.

Overview

Why mold air testing matters

Most mold is invisible. Spores float undetected through ducts and doorways, spreading from room to room with the air itself. Air testing reveals the species and concentration of what's airborne, even when no visible growth is found on any surface.

Mold air testing detects:

  • Invisible mold spores circulating through the air
  • Differences in spore levels from one room to the next
  • Contamination inside HVAC systems and hard-to-reach areas
  • Early warning signs in rooms that appear unaffected
Why mold air testing matters
Mold inspector at work

Benefits

What you get from air testing

Understand the air quality and find what your eyes can't

  • Non-invasive: No drilling, no surface damage, no demolition needed.
  • Early detection: Catch contamination before it spreads or symptoms start.
  • Data-driven: Measure and compare spore counts room by room with lab-verified results.
  • Defensible documentation: State-certified lab results that hold up for insurance and real estate use.

About

How mold air testing works

Our certified mold inspectors use calibrated sampling pumps to draw air through a spore trap cassette, capturing airborne mold spores. The lab identifies the mold species under a microscope, including any HVAC contamination if the system is implicated.

Our process includes:

  • Targeted sampling in problem areas and comparison sampling outdoors
  • Spore traps or impactor cassettes calibrated for accurate collection
  • Lab-verified results identifying species and spore counts
  • A written mold inspection report with the numbers and next steps
How mold air testing works

Mold inspection San Jose FAQ

Call For An Inspection
Same-day and next-day appointments are usually available across our San Jose service area, with 24/7 emergency response for active leaks, recent water damage, or urgent real estate timelines. Standard scheduling runs 1 to 3 business days depending on availability.
Our certified mold inspectors assess bathrooms, kitchens, laundry rooms, basements, attics, crawl spaces, HVAC components, and any area showing signs of past or current water issues. Thermal imaging and moisture meters identify hidden moisture behind walls and under floors.
Both Coyote Creek and the Guadalupe River have histories of significant flooding in San Jose, with the 2017 Coyote Creek flood affecting thousands of properties in the Berryessa and Rock Springs neighborhoods as one of the most recent large-scale events. Properties that experienced flooding during these events — and many that did not flood directly but sit within the groundwater influence zone of these waterways — carry elevated mold risk in below-grade spaces, crawl spaces, and lower-level wall assemblies. Flood moisture that was not fully remediated at the time of an event continues to support mold growth for years afterward, and properties that changed ownership since a flood event may have no visible record of the original damage. We recommend any property within the flood corridors of either waterway receive a thorough moisture and mold assessment regardless of apparent current condition.
Pricing varies based on the size of the property, the scope of testing required, and whether any lab work is included. Most residential mold inspections in San Jose fall within the standard industry range of $300 to $600, with a clear quote provided before any work begins.

Contact

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Location

24H Mold Inspection of San Jose

Service area neighborhoods

  • Willow Glen
  • Naglee Park
  • Cambrian
  • Alum Rock
  • Berryessa
  • Downtown San Jose
  • Japantown
  • Rose Garden
Call For Service(408) 965-9979