CPD Course

By Oliver on October 14th, 2020

CIBSE approved CPD course

With over 60 years of experience within the Heating, Ventilation & Air Conditioning (HVAC) industry we have the know-how to communicate with our clients whom want to expand their knowledge of the products and services including technical and standard issues that come with this specialist trade.

The Course

This course explains the different types & functions of Fan Coil Units along with the benefits and components associated with them. Further learning objectives includes details on EC/DC technology, specific fan power (SFP), ducting & noise ratings (NR).

This course will cover the following:

  • What is Air Conditioning
  • What are fan coils, different types, benefits, constraints and components
  • EC/DC technology
  • Specific fan power (SFP)
  • Control systems
  • Application guidance
  • Ducting & noise rating (NR)
  • Installation design and selection process

Book Now

Due to the current Covid-19 pandemic we shall be delivering this course via online platform only. For full details and to book a CPD, please complete the form below or call +44(0)20 8783 0033

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Research & Development

By Oliver on September 28th, 2020

 Dedicated to providing the information you need

Our dedicated R+D and Test facilities complement our in-house design and manufacturing capability to meet requirements placed by the most demanding customers.

Our combination of real-world simulation, expert staff and certified test equipment means you can be confident that all Diffusion units will perform according to plan in their target environments.

Using instruments calibrated and certified by BSRIA, we measure air volume, thermal and acoustic performance:

 Validating Air Volume Performance

Air volumes are measured on a purpose designed flow-measuring rig utilising duct mounted flow measurement equipment. The rig measures air volume, motor amps, motor power and power factor simultaneously. Units can be mounted on the rig with the project ductwork and grilles fitted to give an accurate measurement of actual site external pressure drop.

 Validating Acoustic Performance

The acoustic test lab consists of two 4mx4mx4m (64m3) reverberation chambers positioned end-to-end to allow measurements of the inlet/casing radiated and discharge levels simultaneously using full octave band sound measuring equipment.

The chambers can also accept the ductwork and grille layouts for a specific project to be fitted to the unit under test, so an ‘as installed on site’ scenario can be accurately acoustically measured.

 Validating Thermal Performance

The thermal test lab consists of a computer controlled thermal test system to accurately simulate the internal load conditions required for a given project.

The system also controls the operating parameters of the unit under test with regards to water flow rates, air volume and external pressure drop. It can be used for both heating and cooling in airside and waterside control formats. Heat exchanger pressure drops can also be measured and recorded, and all results are made available as comprehensive hardcopy output.

Diffusion COVID-19 customer communication

By John Molloy on April 2nd, 2020

The effects of the Covid-19 global pandemic have seen devastating consequences for individuals, families and businesses all over the world. Throughout this time, we have remained operational and have been working hard to ensure our employees have been working safely and in-line with Public Health England guidance. However, given the significant shift in construction activity over the course of the final days of March, we have now taken the unfortunate decision to close our operations for a period of 3 weeks, effective April 01st, targeting to re-assume our operations as normal by April 22nd.

During this period of closure, our non-manufacturing teams will still be on hand to support you with any question, concerns or advice that you need and we are still handling sales enquiries and issuing quotes remotely.

Please contact us the normal way or through or by emailing:
Cooling Sales – cooling@diffusion-group.com
Heating Sales – heating@diffusion-group.com
Spares – spares@diffusion-group.com
General Enquiries diffusion@diffusion-group.com

We will endeavour to come back to you as soon as we can.

Coronavirus (COVID-19) Statement

By Oliver on March 17th, 2020

The senior leadership at Diffusion are continuously assessing the significant challenges and dynamic situation posed by the Coronavirus (COVID-19) and are actively developing mitigating actions to protect the health and wellbeing of our employees and customers whilst ensuring the continuity of supply for our products to the market is maintained.

We are following the advice and direction given by the UK government and are putting in place plans to ensure that all our teams and business services are protected as far as possible by restricting travel between our UK sites and ensuring that where possible our digitally enabled teams can continue to support our customers remotely.

Our supply chain is robust and the actions taken earlier this year surrounding the challenges in China are not impacting our ability to manufacture our products or deliver our services and  to ensure that we can continue to supply the market every effort is being made to increase the output of our production facilities to ensure stock availability can be maintained. 

Whilst the situation is dynamic and develops everyday our teams are currently fulfilling orders and working to our normal hours of business. Should the situation change significantly we will update you via our website.