INDOOR AIR QUALITY: Study on Commissioning of Upper-Air GUV according to ASHRAE GPC 37 Guideline

On March 2023 we successfully applied to be part of the Pacific Northwest National Laboratory (PNNL) study on Upper Air GIUV for the U.S. Department of Energy (DOE). The Study is about evaluating Upper-Air GUV technology as an energy-efficient approach to improve indoor air quality, reduce the spread of diseases in buildings, and prepare for future epidemics or pandemics.
We focused on the Commissioning Process embedded in the GPC 37 Guideline document. Such document known as "Guideline (ANSI/ASHRAE/IES) 202 and 90.1," is a technical guide developed by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers), ANSI (American National Standards Institute), and IES (Illuminating Engineering Society) to provide guidelines on how the two ASHRAE standards, namely 202 and 90.1, can be implemented synergistically to enhance energy efficiency in commercial and industrial buildings.

We selected the Lake Hills Church Facilities in Austin, Texas (US) as the partner site to perform our field evaluation study. We actively execute every phase of the commissioning process, gathering valuable insights and crafting an exceptionally informative report that encompasses comprehensive details of each of the five project phases:
1) Pre-Design
2) Design
3) Contruction/Installation
4) Acceptance/Operations
5) Post-Installation

Upon project completion, we were extended an invitation by the IUVA (International Ultraviolet Association) to present our field research findings at the IUVA World Conference scheduled for September 2023 in Dubai, UAE.
Comprehensive explanations regarding the cutting-edge commissioning of Upper Air GUV applications have been provided, along with concluding thoughts emphasizing the importance of fostering alignment and collaboration among various stakeholders in the process, including manufacturers, resellers, installers, purchasers, and end-users.

The full text of the presentation is available here (download PDF).

We extend our sincere appreciation to everyone who attended and showed positive feedback and substantial interest in the content.
Should you require additional information or wish to connect, please feel free to reach out


Ultraviolet rays are electromagnetic waves which are part of light. Electromagnetic waves are divided into three main wavelength bands, expressed in nanometers, nm: Ultraviolet rays (UV) 100-400 nm Visible rays (light) 400-700 nm Infrared rays (IR) 700-800,000 nm UV rays are in turn identified in three bands:

  • UV-A (315-400 nm) with tanning properties;
  • UV-B (280-315 nm) con proprietà terapeutiche e di sintesi della vitamina "D";
  • UV-C (100-280 nm) with germicidal properties.

UV-C rays (100-280 nm) have a strong germicidal effect and reach their maximum efficacy at the 265 nm wavelength. The germicidal effect of UV-C radiation covers bacteria, viruses, spores, fungi, moulds and mites; this is mainly due to the destructive effect of the UV-C rays on their DNA, which damage their reproductive system and prevent them from replicating.

Bacteria, Viruses, Spores, Fungi, Mould, and Mites are all sensitive to, and can therefore be eliminated with, UV-C light. Mircrobes cannot acquire resistance to UV-C light, unlike that which occurs using chemical disinfectants and antibiotics. UV rays are ecological. Polluting the environment is inevitable using normal disinfectants. Directly inhaling the vapours, or swallowing food products contaminated by any contact with said chemical disinfectants, can also give rise to a number of serious risks. In cases where chemical disinfectants cannot be eliminated (food, pharmaceutical, healthcare industries, etc.), using ultraviolet rays for disinfection allows a reduction in their use, with considerable economic savings and greater care for the environment, while maintaining and almost always improving the level of disinfection. UV-C light devices can be installed in environments and on machinery and be programmed to maintain the same level of disinfection day and night, guaranteeing ideal hygiene conditions, without highs and lows. On the contrary, chemical disinfectants are effective only during their actual use. Using LIGHT PROGRESS equipped luminaires, operating costs are negligible; it could be said that “LIGHT PROGRESS” UV-C systems do not require maintenance except for the normal replacement of the lamps. The cost/benefit ratio is considered excellent; the devices are both powerful and long-lasting. Hence the elimination of germs using UV-C technology is low-cost and highly effective compared to (or in combination with) other systems.

UV-C really does work when applied correctly and with the necessary precautions. The difference between a quality project and an unsuccessful application is in-depth knowledge and experience gained over time. Since 1987, Light Progress has been carrying out successful projects all over the world and has acquired a clientele of major companies in all sectors that require verified hygienic conditions to produce quality products and services.