Indoor Air Quality Evaluation

An indoor air quality evaluation is NOT a Mold Investigation or a Mold Assessment. Mold Investigations and Mold Inspections are specific to problems already identified and a Mold Assessment or Mold Investigation falls outside the licensing scope of the Mechanical Contractor and must be completed by a licensed Mold Investigator/Mold Assessor.  Why does Indoor Air Quality fall into the scope of the Mechanical Contractor? Because all the air circulating in a building, all of the air moving and and out of the building, how well the air is filtered, all of the temperatures, the humidity, and the pressures are in the realm of the mechanical contractor. But how do we know what needs to be fixed?

The first step is the Indoor Air Quality Evaluation. This is a multi-step process that can have a total time investment of a few hours by an experienced technician. There should be nothing subjective about the evaluation, it should only deal with facts. A good evaluation is done the same way, each and every time. The outcome of the investigation should be documented in a report that demonstrates each point of the evaluation, is there a problem, and if there is a concern or problem identified what the recommendation to resolve is.

At Christopher Molnar, LLC our Indoor Air Quality evaluations follow the same 13 step process.

  1. Walk-through with owner or representative. This is an overview to identify any areas of concern and to get a feel for the scope of the evaluation.
  2. Full inspection of the HVAC system. Special attention is given to any issues that could affect the quality of the air passing through the system. For example, an evaluation of duct leakage, seals on the systems, and drainage of the condensate. Additionally looking for any signs of moisture and wet duct materials.
  3. Analysis of HVAC system with diagnostic tools. This is a full diagnostic of refrigerant pressures, temperatures, and humidity. We have to start with a good solid base.
  4. Measurement of airflow at all grills, registers and vents. Without proper airflow and pressures the system will not work as designed.
  5. Measurement of airflow at all exhaust fans. Exhaust is important to remove contaminants from the building.
  6. Evaluation of system performance.
  7. Take the building air pressure compared to outdoor pressures. For exhaust fans and vents to work properly the pressure inside the building should be slightly higher than outside.
  8. Take up to two indoor air samples using Air-O-Cell cassettes for laboratory evaluation.
  9. Take outdoor air sample to send to laboratory as a control sample.
  10. Take a tape sample of a single area of concern for laboratory analysis. Additional areas can be sampled at additional cost.
  11. Preliminary report will be generated onsite.
  12. Air and tape sample(s) will be shipped via overnight delivery to the laboratory for standard processing. Expedited processing can be ordered for additional cost.
  13. Final certified report, including laboratory reports, will be delivered within 7 days.
  14. Available for consultation and discussion of recommendations via phone following receipt of report.


Call us at 863-949-0887 for pricing and availability!