Fuller’s — The Holly Bush

Project Overview

Extechnology delivered a robust, evidence-led odour control solution for Fuller’s — The Holly Bush, designed to address historic neighbour concerns and satisfy stringent planning scrutiny. The system combines electrostatic filtration, UV-C/ozone treatment, and activated carbon polishing to provide a layered approach to grease, smoke, and odour control.

The design focused on achieving demonstrable performance while ensuring safe operation, maintainability, and long-term compliance.

The Challenge

The Holly Bush is a historic site operating within a sensitive planning environment, with documented neighbour complaints relating to kitchen extract odours. Any proposed solution required a clear, defensible design strategy capable of withstanding planning and environmental health scrutiny.

Key challenges included:

• Addressing established odour complaints from neighbouring properties

• Meeting strict planning and environmental health requirements

• Integrating modern odour control technology within an existing building

• Ensuring safe operation and accessible maintenance within constrained spaces

The Solution

Extechnology engineered a multi-stage odour control stack beginning with an electrostatic precipitator (ESP) stage to remove grease and smoke particulates. This upstream filtration protects downstream odour control equipment and ensures consistent performance.

A UV-C/ozone treatment stage was installed in-duct, interlocked to airflow to ensure safe operation and prevent ozone generation under no-flow conditions. This stage provides effective breakdown of odorous compounds within the airstream.

Downstream of the UV-C stage, activated carbon modules housed in sealed cassettes were installed to eliminate residual volatile organic compounds (VOCs) and quench any remaining ozone prior to discharge.

Pre-filter panels and bag filters were incorporated upstream of the carbon stage to protect media life and maintain performance.

Technology Used

• RY5000B Electrostatic Precipitator (ESP) for grease and smoke removal

• iDUCT UV-C in-duct arrays with airflow safety interlocks

• Site Safe activated carbon modules in sealed cassettes

• Pre-filter panels and bag filters to protect carbon performance

Project Outcomes

• Odour levels reduced to planning-acceptable thresholds

• Robust, evidence-based odour control solution suitable for sensitive locations

• Clear maintenance strategy aligned with TR19 guidance

• Improved neighbour relations and straightforward regulatory sign-off

Consultant Notes

The system was equipped with BMS status and alarm outputs to support monitoring and compliance. UV-C lamp life planning, safe access clearances, and maintenance considerations were incorporated into the design to ensure safe and efficient long-term operation.