The PRS System

The premium solution for HVAC systems

Bespoke Solution

PRS offers a complete anti-pathogen solution for commercial air handling in large buildings. Our UVC systems, proven by comprehensive testing, can be retrofitted and are manufactured on a bespoke basis, to suit the required volume and speed of airflow of your air-handling systems.

Any air-conditioning system which operates with recirculation can be considered. It can be installed in large ducts situated in AHU plant rooms, or smaller ducts within MVHR systems.

We manufacture units tailored to the exact size of ducting and then the UVC radiation levels are calibrated to suit the volume and speed or air to be treated.

Bespoke Design

Systems are designed to suit the specific air handling parameters of the building

Proven Efficacy

Efficacy proven via live testing with SARS-CoV-2, Influenza A and Measles viruses

Powerful Solution

Inactivates in over 99.99% of SARS-CoV-2 in fast-moving air within HVAC systems

Full Integration

PRS units integrate into existing HVAC systems, retrofit or new build as required






Technical Specifications

The Pathogen Reduction System has undergone rigorous technical and scientific testing to demonstrate its operational efficacy and performance. PRS is undoubtedly the leading technology in its class, and it will lead the drive for improved indoor air safety for years to come.

We have the only UVC anti-pathogen system that can demonstrate its ability to inactivate airborne pathogens, traveling in fast-moving air, in a single pass. In addition to this, we have developed a patented UVC containment device which limits radiation leakage to within Risk Group 2. Personnel working in the vicinity are not at risk, despite the high levels of UVC light being generated within the optical cavity.

Biological Efficacy

Efficacy proven using live viruses in fast- moving air at a Bio-Safety Level 3 Laboratory

Build Quality

Highest quality build and installation via partnerships with leading engineers

Electrical Safety

Fully tested and certified by Nemko, with SISTEMA safety sign-off


UVC Safety

Risk Group 2 safety confirmed by testing at LUX TSI laboratory


The summary reports can be downloaded here:



UVC Safety Measures


We utilise UVC 254nm light in our anti-pathogen solution. High levels of UVC radiation are a danger to human beings, as well as many susceptible materials, so it is particularly important to highlight the safety measures and protocols built into PRS:

  • UVC containment section – eliminates UVC leakage outside the optical cavity, ensuring UVC light cannot bleed into, or out of the ducting
  • Automated cut-off – this mechanism turns off the UVC light source in the event of airflow being turned off for maintenance or the air handling system fails
  • Power interlock – automatically turns the power off if anyone attempts to open the PRS
  • Safety maintenance key – ensures that the system cannot be turned on during maintenance

Installation is undertaken by an approved panel of HVAC engineering companies. CONTACT US for further information.

Integration into HVAC

The primary plant equipment in a modern, commercial air conditioning systems is the Air Handling Unit (AHU). The AHU processes all the air before it is released into the building’s general population. Fresh air from outside is drawn into the system, where it is filtered and temperature-managed, to ensure a constant and comfortable atmosphere for occupants.

HVAC systems typically recirculate 70%-80% of the building’s air. As air completes its cycle and returns to the AHU most of it is mixed with incoming fresh air to begin the cycle again. In this system the majority of the air circulated is already at an ambient temperature, and less heating or cooling is required.

The PRS unit is installed in a suitable section of ducting, after this air processing has taken place. This ensures that all air is treated every time it circulates through the handling system.

HVAC systems are typically set to recirculate air between 5-8 times per hour, so any airborne pathogens present in the building will be quickly inactivated, preventing the build up of a dangerous viral load.

In order for us to better understand the potential benefits of installing PRS in your building we are happy to complete a free Desktop Review. This can typically be done by simply providing building schematics, airflow metrics and photographs of the plant equipment.

Further Information

PRS Brochure

PRS in the Workplace

PRS Technical Specification

Lab Report Summary

PRS Overview

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