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: May 12 and 19, 2025
A "dull" carpet odor was sensed when entering the space.
The carpet was probed with a moisture meter. No elevated moisture was detected.
The wood casework and drywall was probed with a moisture meter. No elevated moisture was detected.
The room was scanned with a thermal infrared camera. No thermal anomalies indicative of moisture intrusion were identifed.
No odors were identifed above the drop ceiling.
No mold/moisture concerns such as delaminating fireproofing or water staining were observed.
The return air grill (above the drop ceiling) was dusty (mild), which would slightly restrict air flow, increasing the energy demand on the fan.
Various surfaces were assessed for visible mold growth. No visible mold growth was observed.
The two ceiling mounted supply diffusers were qualitatively assessed and were delivering air to the space.
The Heating Ventilation and Air Conditioning (HVAC) Unit that serves the space was assessed:
- No concerns were identifed with the coils, drain pan, or filters.
- No odors were present within the unit.
- The outdoor air dampers were open.
A data logger was placed in the room to measure carbon dioxide, which is an indicator if sufficient outdoor air is being delivered to the space. The carbon dioxide readings were used to calculate outdoor air delivery (approximately 15 cubic feet per minute of outdoor air per person, which is acceptable).
A work order was placed for Building Maintenance (HVAC) to clean the return air grille.