To assure compliance with recognized standards for indoor air quality including ASHRAE Standard 62.1-2007 or latest version, verify the performance of each HVAC system including space temperature and space humidity uniformity and outside air quantity.
a) Cleaning and hygiene condition assessment including the Air Handling Units (AHU’s) and Ductwork.
b) Filtration System assessment including; filter installation; integrity, efficiency and replacement schedule.
c) Drain pan operation and condition.
d) Identification of visible contamination sources; internal insulation, fan, coil and other internal components.
e) Condition and physical integrity of the housing, components and surfaces.
f) Fresh air intake location.
ASHRAE = http://www.ashrae.org/
a) Use, Occupancy, Outdoor Sources, Water Damage and Fire Damage events, Renovations, Pest Control and Cleaning Practices.
b) Visual inspection of the plenum area to determine the presence or absence of microbial contamination and/or any other contaminants.
c) Visual inspection of structural components to determine the presence or absence of microbial contamination or water damage (ceiling tiles, gypsum board, etc.).
d) Water activity (%) sampling at hydroscopic buildings materials.
e) Verification of building pressure differential assessment.
Collect air samples during normal business hours, with building operating at normal HVAC rates for:
a) Sample and record outside air levels of formaldehyde and TVOC contaminants at outside air intake simultaneously with indoor tests to establish basis of comparison for these contaminant levels. Indoor testing will be done in the breathing zone; between 4′ and 6′ from the floor.
b) Environmental (Indoor) Monitoring for: Particles (PM10, PM2.5), Total VOCs, Bioaerosols air (indoor vs. outdoor comparison), Bioaerosols visible growth), Carbon Dioxide, Carbon Monoxide, Ozone, Nitrogen dioxide, Ammonia and Hydrogen sulfide.
c) Air-O-Cell samples, in order to ascertain levels of air borne particles such as opaque particles, skin cell fragments, dust and fibers.