Air Quality Testing

If you’re looking for high-quality indoor air quality testing in Houston look to Dunn Inspection Services.

We provide advanced solutions to help deliver safer, healthier, and more efficient indoor air quality regardless of your building type or indoor environment.

Due to its climate, exploding population, and sheer number of vehicles and factories, Houston grapples with high levels of air pollutants. Additionally, many people in Houston rely heavily on their HVAC systems. Unfortunately, the presence of pollutants in our own homes is often forgotten. Respiratory issues begin where we spend our most time; according to the EPA, the average American spends 90% of their time indoors.

Our Process

PRE-INSPECTION CONSULT

Every assessment starts by gathering information about your issues, concerns and air quality goals. We will want to know about the moisture history of the building, including leaks and spills, as well as other things like visible damage and strange odors. These are all clues that can help us identify the problems.

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VISUAL ASSESSMENT

The next step is a thorough inspection, including the use of specialized instruments including particle counters, infrared cameras, moisture meters, VOC meters and humidity meter, to determine the presence of mold.

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POST-INSPECTION CONSULT

After the visual assessment, we’ll reveal and discuss what was found. These findings will assist in developing a sampling strategy to confirm mold sources of contamination and to analyze the overall level of contamination in different areas of the building. This is also where we’ll guide you through a high-level overview of the steps needed to correct the issues and get your air quality back under control.

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SAMPLING

The last step is to collect the air, surface and dust samples that were discussed in the post-inspection consult. A chain of custody is completed and samples are sent to the labs.

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“Direct Exam” refers to samples that are read under a microscope to identify and quantify the genus (family) of molds present. Spore trap air samples capture fungal spores present in the air to assess whether a fungal elevation is present in certain areas. Surface samples (tape, swab or bulk) are collected directly from a surface containing suspect visible mold to identify the genus of molds present and whether or not they are growing on the surface.​

ERMI, HERTSMI-2 or “dust sampling” refers to a methodology call mold-specific quantitative polymerase chain reaction (MSQPCR), a highly specific DNA-based method for quantifying mold species. Environmental Relative Moldiness index (ERMI) was developed by the EPA as a research tool to investigate mold contamination in homes and quantifies 36 mold species for comparison with a database of reference homes. HERTSMI-2 uses MSQPCR to quantify 5 mold species and is designed to help patients understand if a given building is safe for occupancy. All ERMI samples also include HERTSMI-2 scoring.

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​The above are simply the standard samples taken. If you and/or your physician would like another type of testing to be performed, please let us know. We are happy to reach out to those labs and gather the equipment and information needed to conduct that sampling. 

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REPORT & FOLLOW-UP CONSULT

Once we receive the lab results, we’ll put together a report that contains pictures and descriptions of the issues, interpretation of lab results and recommendations for each issue. We include a phone consultation (up to 1-hour) to review the report, answer questions you have and ensure that you have a firm understanding of the situation. Our goal is to provide the highest indoor air quality!