Project Report > Poor Filter Maintenance
Work #: 103037
- Building was recently renovated to be used as a child care facility.
- Upper level rooms contained open ceilings which were a part of a larger, single air space above the entire upper level.
- Two HVAC systems were visible in the open ceiling area.
Furnace / HVAC
- Furnaces noted in upper level appeared to be high efficiency, sealed combustion units.
- Technician was unable to determine actual ventilation due to inaccessibility of the HVAC units.
- Visual inspection of the units revealed a piece of screen installed over an intake duct opening. Screen was caked with dust which appeared to be thick enough to possibly cause airflow restrictions.
- Recommend having all ducts and HVAC units professionally cleaned.
- Recommend having all HVAC filters serviced and replaced where necessary.
- Ventilation Fan in bathroom is very noisy and may appear to be close to failure.
- Grill of ventilation fan is extremely dirty and requires cleaning.
- Strong fecal odor present when entering bathroom. This appears to have been caused by a dirty diaper left in a garbage can.
- RH: 67% Temp: 70 deg F. CO2 = 824 ppm CO = 1 ppm
- Recommend cleaning and/or replace the ventilation fan in bathroom wall.
- Recommend disposing of dirty diapers into a dedicated sealed disposal bag and empty every night.
- Strong odor of breaded chicken tenders present due to the inspection being conducted near lunch time.
- Ventilation hood and fan is present and functional over the stove. Fan was not in use at the time of inspection.
- Kitchen was occupied and in use during much of the inspection which limited the inspectors access to many areas.
- RH: 45% Temp: 73 deg F. CO2 = 911 ppm CO = 1 ppm
- Recommend conducting a thorough cleaning of the kitchen to minimize any potential locations where offensive odors could be generated.
- Recommend use of the ventilation hood whenever cooking.
- Recommend operating the ventilation hood and closing the door overnight to determine if the initial odor present when entering building is coming from the kitchen or not.
Upstairs – Great Room
- Walls and ceiling were scanned using a thermal imaging, infrared camera to determine any areas of temperature differential which would indicate moisture intrusion, missing insulation and/or other structural defects. Several locations were noted on exterior walls where insulation appeared to be minimal or missing.
- RH: 41% Temp: 70 deg F. CO2 = 755 ppm CO = 0 ppm
- A previous moisture intrusion event had occurred in the sprinkler room. Water damaged materials appeared to have been removed and patched up.
- Slight water stains were noted on the concrete wall behind the washing machine. This appeared to be from the previous moisture intrusion incident.
- Threshold to sprinkler room was very spongey and, when stepped on, moisture was squeezed out onto the concrete floor.
- Elevated moisture levels extended approximately 1-2 feet into play room from threshold.
- Technician suspects moisture is a result either from the previous water intrusion issue or may be a result of a spill/overflow from the washing machine.
- Dust levels appeared to be much lower in the base ment area.
- Walls and ceiling were scanned using a thermal imaging, infrared camera to determine any areas of temperature differential which would indicate moisture intrusion, missing insulation and/or other structural defects. No areas of concern were noted.
- Technician suspected a third HVAC system behind a closet door. Unit was not inspected due to the door being locked.
- RH: 36% Temp: 70 deg F. CO2 = 853 ppm CO = 0 ppm
- Recommend removal of water damaged floor tiles in front of door to sprinkler room.
- Heavy dust was noted on many unaccessable surfaces (tops of walls, door jambs and ledges)
- Dust patterns were noted on surfacing paper of attic insulation. Dust was heaviest around cuts for joists and plumbing perferations.
- Dust was also noted around openings for large roll up doors.
- Suspect much of the dust is being generated by ongoing road and building construction projects nearby.
- RH: 39% Temp: 70 deg F. CO2 = 860 ppm CO = 1 ppm
- Recommend air sealing around all perferations to the exterior.
- Recommend regular dusting and servicing of the HVAC filtration unit.
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