Ultraviolet Germicidal Irradiation (UVGI) for HVAC Systems

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Extend the Life of Your HVAC System and Improve IAQ While Saving Energy

UVGI & HVAC

UVGI Types

Upper-Room UVGI

In-Duct UVGI

UVGI FAQ

The choice of which UVGI systems are right for your facility comes down to a few key characteristics:

In-duct UVGI systems are best for reducing maintenance of your HVAC system, which can ultimately lead to energy savings and an accelerated ROI. There is also no threat of danger to anyone in the building, as in-duct UVGI is installed inside of HVAC equipment, away from occupants. While the installation of additional lamps may require more energy and higher costs, the return on investment that you can enjoy from such technology comes with a typical payback period of 2 to 3 years.

An upper UVGI system is ideal for buildings such as hospital and healthcare facilities, as they are filled with many rooms shared by potentially sick occupants throughout the day. The biggest drawbacks of upper-room UVGI is that there is no surface disinfection capability, and they do not work in all spaces – a room needs a ceiling height of at least seven feet to have an upper-room fixture installed.

We also provide UVGI devices that fit PTAC units, fan coils, and mini splits.

Commercial Core

Our commercial core system is designed to improve indoor air quality by eliminating airborne viruses, bacteria, and allergens from thriving in and spreading through your HVAC system. Facility managers and building owners can also save energy and maintenance costs associated with commercial HVAC. Ultraviolet germicidal irradiation, (UVGI) is the most cost-effective and practical solution for improving IAQ and reducing your bottom-line.

FEATURES

Easy installation
Available in multiped lamp lengths (32”, 46”, 60”)
Fits coils up to 144” x 144”
High-output 2 year UV-C lamps
Scalable design for multi-lamp configurations
Lifetime warranty on all parts except lamp(s)
Water-resistant heavy-duty power supply
Optional door interlock switch

BENEFITS

99.9% surface disinfection guaranteed
Eliminates mold, bacteria, viruses
Disinfects coil & drain pan
Improves HVAC system efficiency
Improves indoor air quality

Airborne Disinfection System

Our Air Disinfection System (ADS) delivers exceptional single-pass airborne inactivation of dangerous pathogens such as viruses, bacteria, and mold. Installed parallel to the airstream, the versatile and flexible design of the ADS delivers unparalleled disinfection rates by maximizing exposure time with the air.

FEATURES

Grid or Axial configuration
System features 2-6 high-output 2 year UV-C lamps
Available lamp lengths: 18”, 24”, 32”, 46”, or 60”
110-277V auto-sensing water-resistant power supply
Includes all mounting hardware and 10’ lamp cable
Lifetime warranty on all parts except lamps
Can be configured for single pass or recirculation
Optional control box with BMS integration

BENEFITS

Improves Indoor Air Quality (IAQ)
Complements filtration
Single pass kills up to 99.9% of microorganisms
Effective chemical-free air disinfection
Cost effective

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Is Ultraviolet Germicidal Irradiation Effective Against Infectious Disease?

For years, scientists have known germicidal UV-C disinfection as an effective method for disinfecting air, water, and nonporous surfaces. UVGI systems have been widely used since the 1980s to control tuberculosis (TB).

By itself, air filtration is not enough to protect people from exposure to viruses, including SARS-CoV-2, which causes the disease Covid-19. Based on preexisting data from other human coronaviruses, UVGI systems that are designed to control UV should be equally effective at inactivating and reducing the spread of SARS-CoV-2.

UVGI in HVAC Systems

When you combine proper HVAC filtration with other best practices, such as UVGI, you can reduce the potential for airborne transmission of indoor air pathogens in your HVAC system. With that in mind, it is important to consider that most UVGI systems generally require multiple UV fixtures to be effective.

As air passes over wet coils, contaminants such as dirt, microbes, and particulates stick to their surfaces. This buildup creates an ideal setting for mold, bacteria, and viruses to thrive and spread through the air.

Contaminants that are in constant contact with UV-C rays kill the biofilm and certain organisms that collect on HVAC coils by penetrating their cell walls, preventing them from re-entering the air. SARS-CoV-2 is very sensitive to UVC energy and only requires a very low dosage to kill the virus.

HVAC System configured for germicidal uvgi air disinfection

Client's cooling coils before using our germicidal disinfection system

Client's cooling coils after using our germicidal disinfection system

Recent client’s HVAC coils before UVGI install

Recent client’s HVAC coils one week after UVGI install

TYPES OF ULTRAVIOLET IRRADIATION GERMICIDAL IRRADIATION

UV-C technology is proven to lower SARS-CoV-2 transmission rates in any indoor environment while permitting people to safely work and intermingle. We are the creators of ECOSENSE Platforms, which is the third facet of our three-pronged approach to safe and healthy IAQ. Our proprietary technology collects, monitors, tracks, and reports real-time and historical data through gateways and dashboards built by us.

Our UV systems are tested and validated against bacteria, viruses, mold & fungus to achieve up to a *99.999% reduction in certain microorganisms in surface and airstream applications. UV-C arrays are installed in the HVAC unit and/or ductwork and are designed to disinfect surfaces and air as it circulates through the ventilation system.

Filtration and UVGI can be applied in new buildings at moderate additional cost and can be applied quickly in existing building systems to decrease the severity of acute disease outbreaks.

uvgi installation in hospital hvac system

Upper-Room UVGI

Upper-room UVGI can be used in any indoor space, particularly in areas often occupied by people who are sick. Using specially designed fixtures, upper-room UVGI is mounted on ceilings or walls to create a “disinfection zone” of ultraviolet energy placed away from room occupants, keeping them safe from exposure. As the air circulates from natural movement, ceiling fans, or mechanical ventilation, it is disinfected by the fixtures placed near the ceiling. During system installation, the installer must be careful to control the amount of ultraviolet energy reflected into the lower occupied space(s). Reputable manufacturers or experienced system designers will take the necessary room measurements and make adjustments as needed to protect occupants from any harmful UV exposure.

UVGI in Ductwork

In-duct UVGI systems are equipped inside heating, ventilation, and air-conditioning (HVAC) systems to treat coils and inactivate airborne pathogens as they flow through ductwork.

Surface Disinfection in Commercial Air Systems

Treating HVAC coils with UVGI keeps the coils, drain pans, and wet surfaces of your systems clear of microbial growth, which can significantly reduce energy efficiency. Such devices emit relatively low levels of UV energy that is continuously delivered 24 hours a day, making them a practical application.

Air Disinfection in Commercial Air Systems

UVGI systems designed for air disinfection apply a more intense level of UV energy to inactivate airborne pathogens as they move through your HVAC duct. While HVAC air disinfection systems usually require more power and more lamps (or both) to inactivate pathogens within a short period of time effectively. These types of systems are generally placed downstream of your HVAC coils to keep the coil, drain pan, and wetted surfaces free of microbial growth while simultaneously disinfecting moving air.

While UVGI for air disinfection can be used inside any HVAC system to disinfect airborne infectious pathogens, coil treatment UVGI is not powerful enough for disinfecting air and should not be relied upon for treatment beyond surfaces. Treating your coils can reduce HVAC maintenance and improve operational efficiency in large commercial systems.

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