Service
HVAC Mold Inspection & Testing
Air conditioning creates condensation, and an HVAC system that can't drain or dry can grow mold — then spread spores through the building. We inspect accessible parts of the system and sample when it helps.
This page describes hvac mold inspection & testing at our main San Diego location, Pro Plus Mold Inspection. Call (619) 935-5995 to schedule.
When it's useful
- Musty smell when the AC turns on
- Dark spots on vent covers
- Condensate leaks near the air handler
What we do
- 1Visual check of accessible components and registers
- 2Moisture checks around the air handler
- 3Air or surface sampling
Inspection scope
- The rooms and areas you're concerned about, plus related areas such as nearby bathrooms, under sinks, and exterior walls
- Accessible attics and crawl spaces, where safe to enter
- Moisture readings on suspect walls, ceilings, floors, and cabinetry
- Thermal imaging of suspect areas to guide moisture readings
Sampling options
- Sampling isn't automatic. We recommend it only when it will answer a question the inspection can't.
- Air samples may be interpreted with outdoor comparison samples as appropriate to the sampling plan, alongside site observations.
- Surface swab or tape-lift samples characterize material collected at the specified surface, not an outdoor air baseline.
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.
HVAC Mold Inspection & Testing questions
Do I need testing if I can already see mold?
Often not. If growth is visible, finding and fixing the moisture source matters most. Testing helps when the source is hidden, when you need documentation, or after cleanup.
How should I prepare?
Clear access to the areas of concern, the attic hatch, and the crawl space entry, and tell us about any past leaks or repairs. See our preparation guide for details.
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 moreAttic Mold Inspection
Inspection of roof sheathing, insulation, and ventilation for mold caused by roof leaks or condensation.
Learn moreMold Air Testing
Air samples compare indoor mold spore levels with outdoor air to show whether there may be an indoor source.
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 hvac mold inspection & testing in San Diego
Talk to an inspector or send us a quote request.