Diffusion’s Highline 270 range of waterside control ceiling void mounted fan coils having been supplied on numerous projects since 2008 now form a substantial cornerstone for the business, combining the success of this product with Diffusions commitment to provide the most accurate and valuable information on all its products made the decision to undertake independent acoustic testing of the Highline 270 range was an obvious one.

Employing the services of Sound Research Laboratories (SRL Technical Services Ltd) at their UKAS accredited laboratories in Suffolk; all models within the Highline 270 range, covering volumetric air flow rates from 60 ls-1 to 700 ls-1, have now been tested at external static pressures from 10Pa to 50Pa.
Installations and measurement procedures for the testing were conducted in accordance with BS 4856: Part 4: 1997, (Determination of Sound Power Levels of Fan Coil Units, Unit Heaters and Unit Coolers using Reverberation Rooms), with measurements being taken to BS 4196: Part 1:1991, (Sound power levels of noise sources. Precision methods for determination of sound power levels for broad-band sources in reverberation rooms).

The independently established Inlet and Case radiated SWL’s and Discharge In-duct SWL’s can now be provided as part of our technical submittal, affording confidence in the accuracy of data required when any acoustic analysis or assessment is being undertaken.

Furthermore by utilising Diffusion’s own acoustic test rooms we offer the facility to set-up and test for individual project configurations; thus providing more specific acoustic data for individual NR modelling assessment.

Applicants should ideally have knowledge of the HVAC industry. The role involves receiving enquiries, database entry, selecting product, preparing quotes and following up by phone.

You should be self motivated, able to work in a busy sales environment, be computer literate, have a pleasant telephone manner and be a good communicator.

CVs and covering letter should be emailed to diffusion@etenv.co.uk

Thank you,

The Diffusion Web Team

The new site should let you find everything the old site did, but if you want something on the old site you can find it at http://www.diffusion-group.co.uk

Now we have the new site up and running we want to make it a useful resource.  If you have any comments or suggestions we’d appreciate you letting us know.

Thanks – the Diffusion web team.

However old your equipment, wherever it came from, we can help.   We can offer you a tailored programme of refurbishment, upgrade and preventative maintenance that can cut your running costs, improve your environment and help prevent nasty, expensive surprises.  Read more to see how we can help.

Today the company produces an extensive range of heating, ventilating and fan coil units which are sold across a wide range of applications. The Company is believed to be one of the oldest UK manufacturers of this kind of product having supplied the building services market continuously for 50 years.

Diffusion’s Managing Director Leigh Stimpson, who has been with the company for 20 years says:

“We are proud to have been around for this length of time having weathered several recessions, we have always tried to do our best to manufacture quality products that our customers will be satisfied with. Many of our staff have been with the company for many years which gives us stability, while developing new ideas and new products for the future.”

Our impressive client list includes:

• The Houses of Parliament
• National Westminster Bank
• Tower 42
• Midland Bank
• Barclay Bank
• Marks & Spencer
• Land Securities
• British Telecom
• Sony

and a selection of the top London Hotels including:

• The Britannia
• The Mayfair
• Hilton and Swallow Hotels
• The Tara
• The Savoy
• Claridges
• Dubai Hyatt Regency
• The Royal Garden

which enjoy the benefit of cleverly concealed bespoke fan coil units to air conditioned bedrooms and public areas.

Diffusion has identified a number of opportunities for the future, addressing environmental and economic issues together with the need to offer greater customer comfort, this offers scope for significant growth. Committed to investment in its people, modern business principles and innovation, the company will continue to be in the forefront of its industry

Based on the Established and successful Highline range of Diffusion Fan Coils the new ACTIV models capitalise on the functionality provided by the latest generation of EC/DC fans, and pressure independent balancing valves. They provide a real “plug and play” fan coil solution.

Key Design Objectives for the ACTIV fan coil:

• realise the benefits of EC/DC motors and PI valves
• offer real improvements over earlier products
• protect investment with a ‘future proof’ design
• deliver flexibility.

Keeping the ACTIV’s in-built speed control options uncomplicated ticked all these boxes.

ACTIV fancoils:

• use only proprietary OEM components
• do not rely on any 3rd party software for their functionality
• are capable of integration with all makes of fan coil controls
• are factory set to achieve design airflow duty even when no temperature controls are fitted.

By matching each fan to an outlet duct the ACTIV fan coil provides the capability to individually set each duct air volume. System volumetric balance is then achieved either manually by single point motor speed control with the MV version, or automatically using the fan motor’s integrated technology with the CV version.

All ACTIV fan coil models remove the necessity for duct mounted VCD’s; providing installation cost savings, improved operating efficiency and remove a potential source of noise generation from the system.

The fitting of true pressure independent balance and control valves to the heating and cooling coil circuits allow the design water flow rates to be factory set, while remaining readily adjustable. No specialist equipment is needed should future adjustment be required after installation.

Like to know more? Contact us for more information about the new Diffusion ACTIV Fan Coils.

Cardinal Place, at the heart of Victoria, has 1700 Diffusion Fan Coils providing accurate, instantaneous cooling and heating.  Read more here.