Identify deficiencies that may impact IEQ and/or sources of odor concerns. Typically includes the following depending on the nature of concern, but not limited to:
- interview/questionnaire of concern individual(s)
- inspection above drop ceiling (condition of roof deck, pipe insulation, return air plenum)
- inspection of ventilation system (operation of variable air volume box and outdoor air dampers, check controls, measurements of carbon dioxide, temperature and relative humidity, sources near outdoor air intake, measure return and supply air volume, cleanliness of coils, liner and condensate pan)
- inspection of exterior
- inspection below drop ceiling (housekeeping, sink and floor drain traps, signs of past and present moisture concern via visual and/or moisture meter, mold growth, ensure connection of current and capping of abandoned sanitary vents, odorizers, excessive plants and fabric items, identify potential pathways, and measure volatile organic compounds, carbon monoxide, and lighting)
Date(s) of Assessment: September 24, 2024
The Office of the Environment collected temperature (71.7 F) and relative humidity (64.2%) readings from the classroom. These levels were found to be acceptable.
A carpet odor was sensed when entering the space (door closed overnight, Heating Ventilation and Air Conditioning (HVAC) off). A moldy/musty odor was not sensed.
The carpet was probed in various locations with a moisture meter. No elevated moisture was detected.
The wood baseboards near the sink were probed with a moisture meter. No elevated moisture was detected.
No obvious indications of leaks were observed under the sink or above the drop ceiling tile.
No odors were identifed above the drop ceiling.
Various surfaces were assessed. No visible mold was observed.
The area was screened with a thermal infrared camera. No thermal anomalies indicative of moisture intrusion were observed.
The HVAC Unit that served the area was assessed after it became operational:
- The outside air dampers were open.
- The filters were in good condition.
- No concerns were identifed with the coils or condensate pan.
- The energy wheel was not rotating.
Conclusion
The odor experienced appears to be a nuisance carpet odor. The odor is more noticeable in the mornings due to lack of HVAC and doors being closed overnight. Once the HVAC begins operation, it takes some time for the outdoor air introduced from the HVAC system to dilute the odor.
Although likely unrelated to the concern (energy management), the energy wheel within the HVAC unit was not rotating. A work order was placed for Building Maintenance (HVAC) to assess and address.