Diffusion, British heating and cooling equipment specialist, is celebrating success at the HVR Awards 2025 after its New Modular Highline 275 Fan Coil Range won the ‘Air Conditioning Product of the Year’ category. Expanding Diffusion’s award-winning modular range of fan coil units, the Modular Highline 275 offers a higher-capacity option with airflows up to 514l/s. This ensures that even large-scale spaces, such as hotels, receptions, and offices, can benefit from the range’s modular design. With compact dimensions and advanced components delivering low sound levels, reduced energy consumption, and optimal performance, the Modular Highline 275 also offers significant sustainability benefits. The winners were announced at the awards ceremony on Thursday, 2 October 2025, at the River Bank Plaza Hotel, London.
The HVR Awards has been championing innovation, excellence, and achievement across the heating and ventilating industry for over 15 years. With its established reputation and rigorous judging process, the Awards recognise only the very best in the sector. The standard of entries this year was exceptionally high, and following a detailed assessment, Diffusion won the award for its innovative new Modular Highline 275 fan coil range, which is almost endlessly configurable and offers quiet, high-performance, energy-efficient heating and cooling designed to create the perfect indoor environment.
“We are thrilled to have won an HVR Award for our new Modular Highline 275 Fan Coil Range. This recognition highlights the innovative and sustainable design delivered by our Technical Director, John Hepper, whose attention to detail made this fantastic achievement possible. The range is almost endlessly configurable, and offers quiet, high-performance and energy-efficient heating and cooling for the perfect indoor environment,” said Alexis Roberts, Channel Marketing Manager at Diffusion. “This addition to our Modular Highline fan coil range gives customers a wider choice of sizes to suit more projects and the increase in the number of models available eliminates the need to over-specify. With improved performance, easier service and maintenance, new side-specific access, and multiple sustainability benefits, this latest addition to the range is proving to have the winning combination of sustainability, industry and customer benefits!”
Innovation is at the heart of everything Diffusion does. Its latest design enhancements are a direct result of its close relationships with its customers and a deep understanding of their project requirements. The development of the higher-capacity Modular Highline 275 allows the modular range to be installed in a wider range of projects; however, despite higher airflows, the new fan coil units still offer exceedingly low sound levels. Delivering noise ratings as low as NR25 ensures suitability for a variety of applications where quiet operation is critical, such as offices, residential applications, and hotels. The Modular Highline 275 range also provides increased performance due to heat exchangers specifically designed to achieve optimum heating and cooling performance using industry-predominant hot water and chilled water temperatures.
Developed for performance and practicality, Diffusion’s Modular Highline 275 reflects the expertise of the company’s dedicated in-house design team. Every element has been carefully considered to improve performance while ensuring easy service and maintenance, even in confined spaces. The Highline 275 range comprises eight sizes, including 13 models, providing specifiers with greater flexibility and eliminating the need to over-specify, ensuring the ideal product for each project. Demonstrating Diffusion’s commitment to continuous improvement, another new development is the introduction of specific side access to the fans. This design feature simplifies service and maintenance, particularly where services are located in ceilings, which prevents access to fan coil units from below. The new side access enables the maintenance of the fans simply by sliding them to the side. Variants for both the Highline 275 and Highline 235 ranges are available with side removal access to the fans, ensuring accessibility even in restrictive installations.
Diffusion’s Highline 275 range’s modular design delivers ultimate flexibility, enabling attenuator and plenum options to be easily configured to suit the application. Design options are almost limitless as the Modular Highline 275 is completely customizable with over 300,000 configurations, allowing customers to choose the fan coil that fits their individual design. This is of particular importance to buildings that have a change of use, as the units can be re-configured on-site to suit the new purpose of the building and new configuration. This avoids the cost and waste associated with purchasing new models and delivers a significant sustainability benefit.
Designed with aesthetics in mind, the Modular Highline 275 is an attractive solution for architects who require a ceiling exposed solution, as well as those who prefer ceiling concealed units. Featuring excellent build quality, the new Highline 275 range is built to last with a galvanised steel chassis for increased durability.
Diffusion’s Lifetime ‘Eco’ wire mesh filter is supplied as standard with the Modular Highline range. This option provides a robust, environmentally conscious solution that can be vacuum cleaned in situ. By opting for the Lifetime ‘Eco’ filter approximately three synthetic filters a year are eliminated from landfill. Alternatively, ISO grade media filters can be supplied. The filters can be easily removed on-site from either the side of the unit or beneath the unit. On larger models the filters are split into two or more parts, making them easy to remove or clean, particularly beneficial when the unit is installed in confined or awkward spaces.
Diffusion is a British manufacturer, they have been manufacturing heating and cooling equipment in the UK for over 65 years, during which time it has established an enviable reputation for the quality of product, the bespoke design capability and excellent, personal service. Its competitively priced product portfolio comprises a wide range of fan coil units. Diffusion’s main objective is to design and manufacture high quality solutions to meet clients’ needs, designing and manufacturing energy efficient HEVAC equipment that can accommodate specific requirements in the most cost-effective way, where the standard is never compromised.
For further information on the HVR Awards visit: www.hvrawards.com.
For more information on Diffusion, please visit www.diffusion-group.com.