Prominent Houston Hospital, 2015

The case

A prominent Houston, Texas hospital’s air handler units were covered in Aspergillus due to poor filtration and internally lined insulation. Sanuvox IL Coilclean was able to reverse clean the air handler units preventing any contamination in the hospital and saving the hospital thousands of dollars in energy due to reverse cleaning the cooling coils.

The Problem

Our distributor, The Filterman LLC, received a phone call from a prominent Houston, Texas hospital with a severe microbial problem. Aspergillus was growing on the evaporator coil, the transition ducting and the HEPA filters. The hospital was using substandard filters and were not sealing the filters to prevent air bypass. Houston summers routinely get above 100 degrees F and range up to 90% humidity. Biofilm growth in the fins of the cooling coil was preventing proper dehumidification and reducing the air handlers cooling capacity, resulting in thousands of dollars in wasted energy. 

After 4 years of poor filtration, the air handler units were covered in Aspergillus. The black internally lined insulation was completely white with mold growth. The HEPA filters began accumulating moisture due to the fouled evaporator coils further promoting mold growth and reducing the filters life.

Before: Pan is full may need to unclog drain of the biofilm accumulating

Sanuvox Customized Solution

Together with The Filterman, Sanuvox sized each evaporator coil, measured airflow, duct dimensions and recommended the Biowall 60” fixture per transition ducting and specific sizes of the IL CoilClean product based on coil dimensions for each of the air handler units throughout the hospital.

Conclusion

Within 4 months of Sanuvox Biowall and IL CoilClean installation, the evaporator coils began releasing biofilm that had accumulated through the fins of the coils. This biofilm reduced the efficiency of the cooling coil and restricted dehumidification of the air, which became the source of contamination. The internally lined insulation began turning black again as the mold growth was disinfected. The HEPA filters were changed and 5 years later, have still not grown mold.

Installation of a BioWall in the ducts

4 days incubation time

UAI Management LLC, October 2007

The case

UAI Management LLC purchased the SunTrust building on Lincoln Road in Miami Beach three years ago.

They wanted to make sure that the building’s air-handling system produced and circulated clean, fresh air, and operated at peak efficiency. But the assistant property manager and chief engineer quickly realized that there were problems with its filters and coil.

 

The Problem

The old Roll-O-Matic filter system with an oil base that was located on the roof of the building was very dirty, and the A/C coil was moldy as well. 

Although tenants didn’t complain because they had probably gotten used to poor IAQ, the air inside the SunTrust building never seemed quite right. There was a slight musty odor and the dust was everywhere. The coil and filters were cleaned twice a year, but it wouldn’t be long before mold would reappear.

IL Coil Cleaners mounted near / facing the coil.

Sanuvox Customized Solution

A series of high-performance filters would take away the airborne contaminants, but only UV would eliminate mold, bacteria and spores. Sanuvox Technologies recommended the installation of IL Coil Cleaners that shine on the coil 24/7, destroying bacteria, viruses, mold, chemicals, and their associated odors.

Sanuvox partnered with The Filtration Group, a filter manufacturer, and A-One Filters, which installs systems, to design a two-pronged strategy of treating the coil with the UV air purification technology and capturing the particulates with a series of energy-efficient filters. 

After sizing calculation, Sanuvox was able to determine the number of UV lamps that would be required for the system as well as the owner’s return on investment. This system would require five rows of four 40’’ UV IL CoilClean in line UV lamps, which were installed from top to bottom in front of the return side of the coil.

Conclusion

Tenants thanked the assistant property manager for being able to breathe cleaner air.

Because innovative technologies were used, the building earned not only LEED® certification but also won a prestigious national award for creating a cleaner, healthier indoor environment.