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 of Assessment: October 6, 2026
General Information
The room is serviced by a Unit Ventilator (UV) observed to be leaking and reported to Building Services. Building Services (HVAC) inspected the area on August 20, 2026 and found that the drain line in the UV was clogged causing condensate to enter into the classroom. The drain line was cleared. A dehumidifier was placed in the space to assist with drying.
On August 21, 2026, during a follow-up, condensate was observed to be still entering into the space. Further investigation revealed that a fitting on the drain line was cracked. The fitting was replaced the same day and no observable leaks were observed after the fitting was replaced.
Custodial team reportedly cleaned and extracted the carpet impacted by the UV leak after the fitting was replaced on August 21, 2026.
Building Services (HVAC) returned to the area on August 24, 2026, and verified that the UV was no longer leaking and observed that the carpet around the UV was dry.
Assessment Information
The room consisted of a mixture of viny floor tile and carpet floors, concrete masonry unit (CMU) walls, and drop ceiling tiles.
Temperature, relative humidity, and carbon dioxide readings were collected within the space. None of the readings were found to be outside the acceptable ranges.
The carpet was evaluated for elevated moisture utilizing a moisture sensor. No elevated moisture was observed in the carpet at the time of the assessment.
No unusual odors were observed at the time of the assessment.
No obvious indications of moisture intrusion were identified except for a stained ceiling tile along the exterior wall. Water staining was observed on the CMU wall above the ceiling tile grid within the vicinity of the stained tile.
Building Services reported that the staining is due to a known building envelope issue. The building envelope issue is to be corrected during a future capital project.
The UV was assessed and found to be operational at the time of the assessment. Filters were found to be within the acceptable date range, coils and filters were observed to be generally clean, and no water accumulation was observed within the drain pan.
The UV was observed to be making an electric "whirring" sound at the time of the assessment.
No visible indications of mold growth were observed above or below the ceiling tile grid.
Out of an abundance of caution and to address potential concerns, the carpet around the unit ventilator was cleaned and extracted.
A vibration sound associated with the control cabinet of the UV was observed. The screws securing the control cabinet were tightened, and the noise was no longer present.