Airflow Advice to Self Builders, make sure you have a good ventilation system in your home!

The article below is inspired from Airflow’s own tips for the Self Builders – simple advices for those who are about to “take things into their own hands” and build their own house! This matter is very exciting, but also full of responsibilities, lots of learning along the way, many mistakes to be made, and many standards and regulations to be respected! Yet it is very constructive even for the human character to put yourself into such a situation / condition!

Approximately 20,000 people build their dream home every year in the United Kingdom. Naturally, they want a good value but they also want quality products that will be reliable and stand the test of time. And this is true especially when it comes to the ventilation system in a home. The people at Airflow have over 55 years of expertise in developing ventilation products that are quiet, reliable, and save money on energy bills over many years.

From the best-selling Loovent extractor fan range to the stylish, silent shutter iCON fans that colourfully blend in with existing decor to the QuietAir range of ultra low energy low noise fans – there is a wide range of options to suit your project. Of course as a self builder you may be more interested in a whole house solution. You will be building to stringent low carbon targets aiming for Carbon zero or PassiveHaus standards so reducing your Dwelling Emission Rate (DER) will be very important to you.

The Duplexvent Ventilation with Heat Recovery system will help you save up to 94% of the heat from extracted air that otherwise would be wasted. Combine this with other environmentally appropriate products to reduce your energy consumption – and you will achieve a shorter payback on your investment! Airflow has a solution to meet all the aspects of the latest Building Regulations for ventilation which also includes Airflex Pro(the zero leakage ductwork system that ensures very low noise transmission between rooms, exceptional hygiene standards by preventing dust build up and no leakage).

Whatever type of ventilation you have in mind – the FREE system design service offered by Airflow(contact them online) can ensure that an energy saving solution that complies with the latest Building regulations can be achieved at reasonable cost. Send them your drawings for a free assessment and quotation.

Main Airflow Solutions for a Self Builder

Video of the Airflow iCON range of extractor fans for bathrooms, en-suite, kitchen, and utility rooms

The Airflow iCON range of interior extractor fans, a very slick range of ventilation fans for bathrooms, utility rooms, en-suites, or kitches, has been extensively introduced via our Heating and Ventilation Articles. This range is truly a very quiet and stylish range of extractor fans. To know more about this range, enjoy the following promo video made by Airflow – and visit the Ventilation Solutions – Airflow Ventilation fans to find out more about these fans + purchase them online.

The Airflow iCON extractor fans for bathroom, en-suite, kitchen, etc

Do you want to find out more about the Airflow iCON range of stylish quiet air extractor fans for interior? Check out the articles below or visit the Airflow Fans section on our website.

Where to install the Airflow Extractor Fans and simple instructions of installing the iCON fans

To find out which Airflow Fan is the best for you(at home or at the office, interior extractor fans), read the previous article entitled, What type of Airflow Extractor Fan do you need – what do the regulations say, what’s the best fan? The Airflow Extractor Fans should be positioned in such a way that they give an optimum flow of air through the whole room and they avoid pockets of residual air. The location of planned or existing door and window openings must be considered as well as sources of odours, stale air or condensation. Grilles may need to be installed to allow air into the room, particularly with inner rooms which have no windows and tightly sealed doors. The Extractor Fans should be mounted as high as possible, well away from primary heat sources such as gas water heaters and boilers.

The IEE regulations specify the installation of fans within bathrooms and showers by identifying a series of zones. The IEE regulations must be adhered to for all electrical installations.

Installing the Airflow iCON extractor fans

All the Airflow iCON fans must be installed in accordance with the latest IEE Wiring Regulations 17th Edition (BS7671:2008). Part 7 (Special Locations).

For a complete description of the dimensions of the zones and other information pertaining to a bathroom installation please consult your Part P Assessed Electrician. This diagram is meant for guidance only.

  • Zone 0 in the bathroom – The RED area, the Interior of the bath or a shower tray, here NO Fan can be fitted;
  • Zone 1 in the bathroom – The ORANGE area, the external edge of the bath or a shower tray, extending up to 1.2m from the centre point of the water outlet;
  • Zone 2 in the bathroom – The GREEN area, it extends beyond Zone 1;

More information about the IP ratings in the bathroom, the IP zoning, the IP zones in bathrooms, and a short explanation of the Index of Protection. This article is the second part of the full article entitled, What Airflow Fan do I need and Where Should I site it? – you can read the full article via the Airflow website here. Also, read more about the Airflow Icon fans(low energy extractor fans, even the new face of ventilation), the Airflow Aura-Eco 100mm / Aura-Eco 150mm axial fans, or the Airflow Aventa Shower Kit AVSHWTKT.

What type of Airflow Extractor Fan do you need – what do the regulations say, what’s the best fan?

Building Regulations Approved Document F: Ventilation (2010 Edition), stipulates the provision of adequate mechanical ventilation rates in non-habitable rooms such as toilets, bathrooms, shower rooms, kitchens and utility rooms in domestic dwellings.  Naturally, the Airflow extractor fans exceed these requirements in helping to combat the harmful effects of dampness and condensation, and by extracting airborne pollutants such as odours, cooking smells, humid and stale air, the potential hazards to the health of occupants and possible damage to the fabric of the building can be largely eliminated.

What do the regulations say?

The recommended volume of air extraction per room in the house recommended by the Building Regulations:

  • Toilet/sanitary accommodation: 6 l/sec (22 m3/hr);
  • Bathroom/shower room: 15 l/sec (54 m3/hr);
  • Kitchen adjacent to hob: 30 l/sec (108 m3/hr);
  • Kitchen without cooker hood: 60 l/sec (216 m3/hr);
  • Utility room: 30 l/sec (108 m3/hr);

Note: The Building Regulations guidelines for England and Wales state if the above rooms do not contain opening windows to allow rapid ventilation i.e. internal rooms, the requirement for mechanical ventilation will be satisfied if the fan has a 15 minute timer overrun. Please consult the approved document for guidance on open flue combustion appliances for complementary guidelines to mechanical ventilation and detailed information of alternative approaches.

Low Voltage Airflow Fans – Be Extra Safe

The Airflow range of SELV (Safety Extra Low Voltage) fans fully comply with the current IEE wiring regulations 17th edition detailing special requirements for bathrooms. These well proven fans use a 12 volt electrical supply(which means that the siting of the extractor fans is possible within the permitted splash zones of those using washing facilities).
Note also that it is now possible to install a 230 volt, IPX5 rated fan with a dedicated RCD in splash zones. Consult the IEE 17th edition wiring regulations for full details.

What Type of Extractor Fan do I need?

Having considered the application of the ventilation required, it is important to select the correct type of fan to ensure that the requirement is met. It is not sufficient to fit just any extractor fan. It is important that the fan performs efficiently by extracting the minimum flow rate at the grille outlet as required by the latest Building Regulations. This is known as installed performance. Also, the number of bends and the length of duct attached to the fan will create resistance to flow that must be overcome to ensure adequate extraction.

You should first consider which type of fan will be best suited to provide quiet, efficient ventilation. This will be based on one of the following two general variants.

  1. The Airflow Centrifugal fans and Mixed Flow fans – these are are quiet, powerful and suitable extractor fans for wall, ceiling and window applications. They also work very efficiently against system resistance making them the perfect choice for ducted installations. Examples of such Airflow centrifugal / mixed flow fans:
  2. The Airflow Axial fans – these fans are ideal for through the wall and window applications. Providing high performance with a slim profile, they are suitable for use with ducting up to a maximum 2.5m ( 11m*) in length. Examples of such Airflow Axial Fans:

This article is the first part of Airflow’s own guide / tips on: What Fan do I need and Where Should I site my Fan? Read the second part of this article(in the next article on the blog), or read the entire original article here. To purchase any Airflow Extractor fans, visit the Heating and Ventilation categoryVentilation systems.

Airflow iCON low energy extractor fans, iCON15s and iCON30s, features and ranges

The Airflow iCON Range of extractor fans

The choice of three aesthetically designed fans in the iCON range means you can fit the perfect size to perform effectively for the size of room and the application. The low profile iCON 15 axial fan is sleek and slim. The iCON 30 and iCON 60 mixed centrifugal/axial flow fan technology makes them not only highly compact and efficient but also extremely quiet in operation and suitable for use with longer runs of ducting.

A stylish, slim and unobtrusive new range of fans for toilet, bathroom and kitchens with a unique iris shutter and a choice of colours too! The choice of three aesthetically designed fans in the iCON range means you can fit the perfect size to perform effectively for the size of room and the application. The low profile iCON 15 axial fan is sleek and slim. The iCON 30 and iCON 60 mixed centrifugal/axial flow fan technology makes them not only highly compact and efficient but also extremely quiet in operation and suitable for use with longer runs of ducting.

Read below more about the Low Energy Airflow iCON fans, some of the Technical specs, the Airflow iCON accesories, and some installation advices.

The 12V DC low energy fans – Airflow iCON 15S and Airflow iCON 30S

The Airflow iCON 12volt SELV low watt fans with brushless DC motors offer significantly reduced energy consumption compared with standard AC motors. Fitted with ball bearing motors for extra long life, each one is supplied with a 230V AC transformer. Interchangeable fan control modules are available. Both fans are SELV (safety extra low voltage) compliant with IEE wiring regulations for wet zones in bathrooms.

The continuous ventilation fans iCON 15CV and iCON 30CV provide quiet, adjustable continuous background ventilation at a minimum high rate of 8 l/sec and 13 l/sec respectively with a choice of control options to boost performance to maximum air flow.

iCON 15S and iCON 30S – Energy saving and extra safe!

iCON 12 volt SELV low watt fans with brushless DC motors offer significantly reduced energy consumption compared with standard AC motors. They are also better looking, quieter and easier to install than many other fans. Fitted with ball bearing motors for extra long life, each model is supplied with a 230v AC to 12VDC transformer.

The Airflow iCON SELV Range

Aesthetically designed and extremely efficient, the iCON range of low watt DC fans provides economy in use with a long working life and SELV protection. The iCON 15S axial fan is sleek and slim, while iCON 30S mixed centrifugal/axial flow technology makes it highly compact and also quiet in operation.

Airflow iCON 15S – 12v DC / SELV Axial fan
  • The Airflow iCON 15S is ideal in toilets and wet zones in en-suites, shower rooms and bathrooms.
  • Recessed into the wall or ceiling, it is stylish and unobtrusive, even in the smallest space.
  • Supplied with AC/DC transformer.
  • Housing IP rating: IPX4; Fan Size:197 x 89mm.
  • Ductable Air flow: Up to 4m 70m3/hr.
  • Buy online the Airflow iCON15S.
Airflow iCON 30S – 12 DC / SELV Axial Fan
  • The Airflow iCON 30S is quiet, powerful and designed for recessed or surface mounting in walls or ceilings in wet zones in larger toilets, bathrooms and utility rooms.
  • Supplied with AC/DC transformer.
  • Housing IP rating: IPX4; Fan Size: 225x141mm.
  • Ductable Air flow: Over 9m 111m3/hr.
  • Buy online the Airflow iCON30S.

Interchangeable fan control modules are available and are conveniently sited in the fan, not the remote transformer. Both models are SELV (safety extra low voltage) compliant with IEE wiring regulations for wet zone 1 and higher in bathrooms.The unique iris shutter design makes switching on and off almost silent and helps reduce external noise ingress.

Accessories and Technical Specs – Airflow iCON

Airflow iCON fans – Accessories

iCON 15S and iCON 30S can be ducted through standard 100mm (4”) rigid, flexible or flat ducting. Airflow supplies a comprehensive range of ducting, accessories and controllers to complement an installation and can advise on specification of compatible ducting and grills to meet Good Practice Guidance.

Accessories
  • High rise cowl kit;
  • Circular grilles;
  • Steel flat ducting;
  • Airflex ducting;
  • Door switch;
  • Wall grilles;
  • Wall grilles with spigots;
  • Airflat ducting;
  • Speed controller;
  • Roof cowl;
  • Cavity wall kit.

The Installation of the Airflow ICON ventilation fans

  • iCON has been designed with simplicity in mind. A quick, core drilled hole enables immediate fixing of iCON.
  • The twist on/off cover requires only a single side entry fixing screw.
  • Cantilever fixing lugs enable recessed installation on uneven surfaces.
  • iCON 30 and iCON 60 are also supplied with a narrow contour skirt for surface mounting if preferred.
  • The ‘snap-in’ module is quick to fit and wire giving the installer a choice of controls on-site.

To find out more about the Airflow iCON extractor fans, read the iCON15/iCON30/iCON60 introduction, or the Airflow iCON – the new face of ventilation. View the full Airflow iCON offer online at the Heating and Ventilation section, VentilationAirflow Extractor Fans.

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