UV-C Germicidal Lighting

Greffen Systems has been providing innovative technologies for the HVAC industry in both the public and private sectors since 2008. Greffen offers a full suite of UV-C germicidal solutions that includes; design, project management, complete installation and ongoing support to retro-fit your facilities with 253.7 nm germicidal lighting. Greffen’s engineering team will also work with you to determine placement and number of Upper-Room UV-C germicidal fixtures as applicable for the respective buildings. Greffen’s engineers will also discuss other ancillary benefits of UV-C lighting that should be incorporated into the design, such as energy savings, mold remediation and pressure drop over the coil.

A Solution to Combat the Coronavirus: Greffen Systems is working with industry leaders to offer a UV-C germicidal light solution that will combat the coronavirus. COVID-19 is considered a nano-virus and is only .1 micron in size. To put this into perspective, a HEPPA filter will only collect particles up to .3 microns. Based on the information available from authorities, coronaviruses can be transmitted via both air and direct contact. It can be assumed that the virus can be ingested into the return air-plenum and be moved throughout the org organization’s air handling units and the building’s duct work.

How Do We Know UV-C Works? Researches don’t know if UV-C can kill COVID-19 as this particular strain has not yet been studied, but it has been proven that UV-C waveform 253.7 nm is effective in killing other varieties of coronaviruses such as SARS and MERS. The 253.7 nm spectrum UV-C bulbs are in fact the same spectrum bulbs used to sterilize hospital surgical rooms.

Greffen’s Upper-Air wall mounted fixtures offer a proven solution that will kill viruses and pathogens as they rise in the room from both ventilation as well as convection of the natural heat plumes from the occupants in the room. These units are mounted at approximately seven feet in the room and offer unique pathogen killing performance while totally protecting the safety of the inhabitants.

Energy Savings: Greffen’s UV-C solutions also offer tremendous energy savings by cost-effectively eliminating 90% or more of the organic growth to significantly improve airflow and heat-exchange efficiency. This dramatically reduces the pressure needed for the fan to produce the required CFMs per the air handling unit’s design specifications. This continuous coil cleaning assists in keeping the entire HVAC in balance produces a tremendous ROI of often under two years. (See ASHRAE RP-1738 images below).

Greffen UV-C Germicidal Lamps:

Greffen offers a wide range of UV-C Germicidal lamp technologies including upper-air units as well as in-duct UV-C lighting. All of the technology offered by Greffen is the same 253.7 nm technology that has been well proven for years to sterilize hospital operating rooms.

In-Duct UV-C solutions are unique in their ability to kill viruses in one-half of a second as they pass by germicidal lights. While UV-C’s effect on COVID-19 has not been studied yet, there have been numerous studies that show that 253.7nm UV-C solutions are extremely effective in killing varieties of coronaviruses such as SARS and MERS. Based on the information available from authorities, coronaviruses can be transmitted via both air and direct contact. It can be assumed that the virus can be ingested into the return air-plenum and be moved throughout the organization’s air handling units and the building’s duct work.