Our highlights from 2025

Greatfields Primary School, Barking and Dagenham 

For this purpose-built new three-form entry school in London, we supplied a combination of our Hybrid Plus2 Aircool ventilators and Hybrid Plus Airstract roof terminals.

Developed by main contractor, Auburn Group, the school required a natural ventilation strategy to support the project’s energy and environmental goals. Passivent supplied Cedar Mechanical and Electrical with a total of 58 Hybrid Plus2 Aircool wall ventilators, each mounted behind an external weather louvre, to ventilate the classrooms with fresh air from outside, and the Hybrid Plus Airstract roof terminals to provide effective ventilation of the school’s main hall. The whole system is controlled by a 35-zone iC8000 intelligent control system that monitors CO₂ and temperature levels, delivering fresh air only when necessary.

Marcus Bloomberg, Electrical Operations Manager at Cedar Mechanical and Electrical commented, “We were extremely impressed with the results of incorporating Passivent’s natural ventilation solutions into this project. Not only does the system deliver excellent airflow and create a comfortable environment, but the unique design of the units also stands out. ….The commissioning engineer, Ray, also went above and beyond to ensure the system was installed and functioning perfectly and his proactive support was invaluable.”

York Street station, Belfast

We manufactured nine bespoke Aircool® ventilators which were installed in a new fully enclosed, glazed footbridge spanning the railway track at the upgraded York Street Train Station in Belfast, part of a £17m station upgrade project designed by Gregory Architects.

The completely bespoke Aircool ventilators were designed to integrate within the curtain walling of the footbridge to complement the aesthetics of the project, while also controlling the temperature and CO₂ levels within the glazed footbridge to prevent overheating.

The Aircool units were also designed with externally accessed 24V actuators to modulate the motorised dampers which allows for ease of maintenance as the steel structure within the footbridge was installed 10mm away from the internal cover grilles, meaning access from the inside was not possible. The actuators provide controlled air intake and extract via the Building Management System.

Winscombe Community Centre, Somerset

This project highlights the value of using IES thermal modelling to create the most efficient ventilation strategy as we were able to value engineer the project and exceed our client’s expectations by reducing the number of roof terminals required without impacting performance.

We worked closely with M & E contractor Oldland Electrical Services Ltd to devise a ventilation strategy for the new two storey community centre building. By importing the Airscoop roof terminal into a model simulation of the building via the IES platform, our design team demonstrated that three Airscoop roof terminals would be sufficient to ventilate the area effectively, not the four alternative roof terminals originally proposed.

As a result, three Passivent Airscoop roof terminals were specified for the large events space as well as three Hybrid Aircool units complete with external weather louvres for ventilation of a small hall area and a foyer.

Wood Lane Arches near Shepherd’s Bush, London  

This project is part of a wider Transport for London urban regeneration initiative to repurpose disused railway arches across the city. The new units created in the space beneath the arches are being let for commercial and community use for a variety of purposes including cafes, shops, gyms, hair salons and workspaces.

Working with Extended Studio Architects at the early design stage, our team developed a cross-flow ventilation strategy designed to create a comfortable environment for occupants of the newly created units. A total of 24 of our insulated controllable dampers were installed by Delta House Group on opposing sides of the units to facilitate the cross-flow of air. The units are controlled by one of our eC300 controllers in each of the arches.

Maude Community Centre, Kent

This two-storey sports pavilion and community annexe officially opened in July, providing a new social and community hub for New Romney, including improved facilities for local sports clubs. It’s another project that shines a spotlight on the collaborative efforts of our own design team to create an effective ventilation strategy. We supplied ten wall Aircools®, two Airstract® roof ventilation terminals and an iC8000 intelligent controls system to main contractor, Kent Structures, who delivered a full Design & Build service inclusive of M & E, groundworks and building construction. The project was delivered using modern methods of construction which was key in bringing the centre in on budget, combined with material choices which made the building more sustainable overall.

And in other news

Early in 2025 our full range of roof ventilation terminals was included in the launch of the IES Virtual Environment.

In the height of the summer, we were pleased to host the CIBSE Natural Ventilation Group meeting, ‘Staying Cool in a Heatwave’ in our London wienerberger showroom based in the Building Design Centre, Islington. In October we contributed to the cost of the CIBSE YEN Awards shortlist celebration event ‘The Future Forum: Celebrating 30 Years of CIBSE’s Young Engineering Talent’, also held at the  Building Design Centre.

We also attended ArchiExpo in Dublin on the 8^th and 9^th October where we exhibited alongside our sister company Glidevale Protect. Our stand attracted a steady stream of visitors during the show, and our team was on hand to demonstrate how our technology partnership with Integrated Environmental Solutions (IES) means that our products can be included at an early design stage in thermal models of your building.

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