Air Handling Units
What is an Air Handling Unit?
Put in it's simplest form an Air Handling Unit is a collection of components used to either supply fresh clean air to a room or to remove old stale air from a room, or both!
The Make Up of an Air Handling Unit
There are a multitude of components that can make up an Air Handling Unit, and each Unit will have a different combination of (some or all of) these:
- Filters - to remove certain types of contamination from the air
- Coils - heating coils to warm the air, cooling coils to cool the air and either using a range of different metals / liquids / gases to meet the desired requirements
- Energy Recovery Devices - these work by using the warm air energy coming out the room to heat the cold air going into the room and vice versa, using the cool air energy coming out of the room to cool down the warm air going in to the room
- Fans - to bring the air through the Unit, and the connecting ductwork, into and out of the room
- Dampers - to shut off and / or control the amount of air coming through the Unit, particularly in (but not limited to) Energy Recovery and mixing plenum's
- Controls - the networking of mechanical equipment designed to monitor and control the heating, ventilating and air conditioning system via the AHU control panel
Choose Craftsmanship and Knowledge
For over 35 years we have been hand-building our units in Kent (United Kingdom) to a very high standard. The reason we hand build in this technological age is, there isn’t a better way. Modern computer aided design and construction techniques can manufacture precision components and streamline production, but the immaculate detail and finish of one of our Air Handling Units, inside and out, can only be achieved by skill and dedication. This human factor, and its influence on the finished product cannot be replicated by a machine, which might be able to punch, notch and fold a given number of times, but will never be able to tell when the end result is right. The fact that the end result is right on our air handler is as much thanks to the people who built it as to the technology that first mapped it out.
Our experienced and knowledgeable members of staff have obtained qualifications from Higher National Certificates to Masters Degree. We believe our staff should match the technical abilities of all its customers so that together we can offer a designed solution.
Suitable Applications and Environments
All our air handling units can be provided to suit the following applications and environments:
- Coastal - suitable for installation in all coastal environments
- Swimming Pool - suitable for installation in all swimming pool environments
- DE037 - Government buildings specification
- HTM03-01 - suitable for installation in healthcare premises and complies with the Heating and Ventilation Systems Health Technical Memorandum 03-01
- Atex - suitable for installation in potentially explosive atmospheres.
The Right Standards and Upholding the Regulations
Each module of the complete Air Handling Unit can be manufactured to suit each of the following specifications and regulations:
- Ecodesign Commission Regulation (EU) No 1253/2014
- prEN 16798-3:2014 (E) Performance requirements for ventilation and room-conditioning systems (Supersedes BS EN 13779:2007)
- BS EN 1886: 2007 Air Handling Units. Mechanical Performance
- BS EN 13053: 2006 + A1: 2011 Air Handling Units. Ratings and performance for units, components and sections
- ISO 16890 - 1 :2016 - Part 1, 2, 3 and 4 Air Filters for General Ventilation
- Non-Domestic Building Services Compliance Guide 2013
- The Building Regulations 2000, Conservation of Fuel and Power L2A and L2B
Within Size and a Solid Construction
- Our comprehensive range of Air Handling Units are available in 17 sizes with an airflow range of 0.4m3/s to 35m3/s.
- Acoustic panels are available on every Air Handling Unit for low noise transmission.
- Depending upon the project requirements panels can be either 25mm or 50mm thick.
- Our standard plastisol colour is Goosewing Grey RAL10A05, other colours are available on request.
- Each complete unit or modular section would be factory assembled on a full perimeter galvanised or aluminium base to ensure full structural stability.
- All externally mounted units would be fully sealed and completed with an overhanging pitched roof to prevent water ingress. Guttering and down flow pipes available on request.
Depending upon site access all of our Air Handling Units can be supplied as:
- Modular sections - Delivered to site complete and ready for bolting and sealing.
- Dry built - Sections will be delivered to site in a dry built form, fully assembled and suitable for dismantling to component form if required due to restricted access.
- Component form - Each AHU section is dismantled at our factory to manageable pieces with top and bottom panel sections complete, with base frame and roof fitted and components packaged within their sections. Each section is separated and dismantled with a number, letter and colour code and section specific.
- Fully assembled - All sections are bolted, sealed and mounted on to a common base frame complete with lifting points. Our highly qualified and experienced site operatives would complete any dismantling, distribution to the plant area and re-assembly of the Air Handling Unit
All ranges above are also available as bespoke units tailor made to suit all dimensional restraints.
Smart Controls and Energy Efficient Systems for Smart Projects
Our Smart Control System allows the networking of mechanical equipment designed to monitor and control the heating, ventilating and air conditioning system via the AHU control panel. This works on a distributed control system; the networking of electronic devices designed to monitor and control air handling units and associated mechanical and electrical systems.
The Smart Control Systems core functionality is to keep building climate within a specified range by controlling temperature, humidity, and CO2. It has the ability to tell the client when the unit should be serviced and which components need replacing over the lifetime of the product. Finally it will tell you how to minimise fuel use and maximise the energy recovered to take full advantage of cost saving over the products life cycle.
BIM there done that!
We have been working very hard for the last 4 years to develop up to Level 2 BIM standard for all our products.
Our objective was to improve the design and efficiency of each and every product by using 3D modelling.
To enable BIM, accurate component construction information (data) had to be made available. This meant every component that makes up the complete air handling unit had to be drawn from scratch in 3D.
By making available a rendered 3D model of each individual component that makes up the complete AHU, we were able to view and dissect the complete AHU construction at the same time. This enabled solutions to be found to improve performance standards.
Following on from this we were able to identify cost savings in the manufacturing process for each AHU component which we have passed on to our customers to make sure we are competitive in the market place. It also allowed us to communicate in a co-ordinated and aligned way.
This digital technology we have introduced will now change the way we plan, build, maintain and use our equipment. It has helped us to operate and maintain it more efficiently. Above all it will help customers to understand exactly the equipment they are purchasing before they place the order.