Project Site: Commercial Administrative Office
Location: South Florida, US
Property Type: Two-Story commercial building approx. 25,000 square feet
Problem: Building air quality generally described as stale. Before air sampling performed and opportunities for improvement in airborne particles and TVOC. High levels of indoor airborne mold spores noted in one particular area of the building. Building owner desires to improve the air quality but also is looking to achieve energy savings.
Scope of Work: Three AtmosAir 500F units were installed in the main supply ducts at the two (2) main air handlers, which supply conditioned air to the building. Also in conjunction, the outside air introduction was reduced by approx. 40%, which in terms of this building equals approx. a 10 cfm per person reduction. After initial installation and calibration of the units by means of air ion measurements, after air sampling was performed in the exact areas and to the exact protocols as the baseline testing done pre-installation.
Results: After air sampling shows a 48% reduction in airborne particles, a 30% reduction in TVOC levels and no indoor airborne mold spores present. Additionally post system installation surveys of the building occupants (occupants were unaware of the system installation) show positive results when asked questions regarding building air quality and overall comfort. In addition the outdoor air percentage reduction when extrapolated using modeling developed by — USEPA and USDOE shows a energy cost savings of $0.28 per square foot achieved by conditioning less outdoor air.
Project Site: US Government Administrative Office
Location: Northern VA, US
Property Type: Two-Story commercial building approx. 60,000 square feet
Problem: Building air quality and interior comfort generally considered problematic. Several occupants have reported complaints regarding the building. These complaints are consistent with the definition of sick building syndrome. Mold spore sampling had been taken prior to contacting AtmosAir as well pre-installation air testing. The average indoor to outdoor ratio showed an average of 45% indoor to outdoor spores, which is a level for concern, especially in the warm, humid southern climate.
Scope of Work: Seven (7) total AtmosAir 500 units (4E and 3F) were installed in the main supply ducts at the five (5) main air handlers, which supply conditioned air to the building. Pre system installation air testing was performed. After system installation and calibration by ion measurement, post system installation air testing was also performed.
Results: Post system installation air testing showed an indoor to outdoor mold spore ratio of less than 1% indoor to outdoor spores. This represents a reduction of over 44%. Also particle levels, which were not problematic in pre testing, were reduced by 10%. In post system occupant surveys (occupants were not informed of the installation of the system) all of the people who complained of the air quality noted that conditions in the building had improvedand several indicated relief from health symptoms such as, sinus irritation, headaches and allergies.