0115 7270 599 info@epsgroup.co.uk

Extractor Fan Flow Rate Testing

EPS Group provides Extractor Fan Flow Rate Tests (Ventilation Tests) for all new dwellings throughout England and Wales as a standalone service or inconjunction with our Air Tightness Testing service.

 

Our reliable and friendly Technicians are all BPEC or NICEIC certified and use UKAS calibrated equipment in order to accurately measure the extract rates of all installed intermittent fans against the minimum requirements of Part F of the Building Regulations.

 

Don’t let building compliance hold you back, book your Air Tightness Test with EPS Group today.

Contact Us Today for your Extract Flow Rate Testing Requirements!

Our highly experienced Technicians provide comprehensive guidance and support in order to help you achieve compliance with Part F of the Building Regulations.

We can complete you ventilation testing as a standalone service or in conjunction with our Air Tightness Testing services.

For more information relating to Extract Flow Rate Testing please explore the Frequently Asked Questions below.

Alternatively to discuss your Extract Ventilation Testing requirements further, please contact us on 0115 7270599 email us at info@epsgroup.co.uk, or complete our enquiry form.

What is Extractor Fan Flow Rate Testing?

Whilst sporadically enforced, Approved Document Part F of the Building Regulations requires all mechanical extract fans within a new dwelling to have a flow rate test in order to demonstrate that they meet a minimum performance standard. The results of this test should be passed to the Building Control Body.

The requirement to undertake flow rate testing extends to all ventilation system types and strategies including simple intermittent extract fans and whole house mechanical extract systems with heat recovery (MVHR).

Ventilation testing is becoming increasingly important as new homes are achieving lower air permeability rates as part of the overall drive towards building more efficient housing. As buildings become more airtight, it is vital that adequate ventilation systems are installed in order to avoid any potential damp and condensation issues. 

Part F Ventilation Testing (Flow Rate Testing) should be undertaken by a BPEC or NICEIC qualified technician using UKAS calibrated equipment.

Extractor Fan Flow Rate Testing FAQs

What extract ventilation rate do intermittent extract fans need to achieve?

Table 5.1 of Approved Document Part F of the Building Regulations details the following minimum extract flow rates from any installed mechanical fans.

 

Room Minimum flow rate
Kitchens (adjacent to hob)

30 l/s  (If adjacent to hob)

60 l/s  (elsewhere)

Utility rooms 30 l/s
Bathrooms 15 l/s
Sanitary accommodation 6 l/s

 

At EPS Group, we provide extract flow rate tests using UKAS calibrated anemometers in accordance with the Minimum Benchmark Method. This is one of three authorised methods for testing domestic ventilations systems as outlined within the ‘Domestic ventilation compliance guide’.

Under the Minimum Benchmark Method, a correction factor is applied to the required flow rate standards in order to take account of any loss of performance which may be experienced as a result of taking flow rate measurements taken with an anemometer. As a consequence, the following minimum measured extract flow rates are deemed to be a reasonable indication of compliance with Table 5.1 of Approved Document Part F and should therefore be accepted by the appointed Building Control Body.

 

Fan Rating Minimum benchmark performance
15 l/s 12 l/s
30 l/s 24 l/s
60 l/s 35 l/s

What factors influence the measured flow rate of an extractor fan?

A number of different variables influence the measured flow rate of an installed extract fan including:

 

  • The declared flow rate of the individual model of fan installed (as tested under factory
  • conditions). As an example; lower powered fans with reduced flow rates are typically installed in WCs and bathrooms in comparison to those installed within kitchens.
  • Axial vs’s centrifugal fans. Axial fans typically have a lower flow rate and are designed for ‘through the wall’ applications. Centrifugal fans on the other hand are capable of moving exhaust air over greater distances such as ducting runs.
  • Ducting distances and layout. Ducting runs should be designed to minimise the resistance that the exhausted air will experience. This is achieved by ensuing that bends are minimised and gradual and that overall ductwork length is kept to a minimum.
  • Ducting type. Rigid ducting should be used wherever possible .If flexible ducting is used, it is vital to ensure that it is not ripped or crushed by any obstructions.
  • Ducting connections. Duct work connections should be fully sealed and made using rigid connectors and jubilee clips.
  • External grilles. These should be clear of any obstruction that may obstruct clear air flow.

When should I complete my Extractor Fan Flow Rate Test?

At EPS Group we are able to provide a significant discount to our fees if we are able to complete extract flow rate testing at the same time as completing an air tightness test on a dwelling as part of the final building control sign off requirements. We are however able to test any ventilation fan once it is fully installed within a property.

How can EPS Group help with Extractor Fan Flow Rate Testing?

There are many reasons to appoint EPS Group to provide your Extractor Fan Flow Rate Testing?

How can EPS Group help with Extract Fan Flow Rate Testing?

We provide a client-focused extract flow rate testing service with time allocated within our appointments to allow an opportunity for any simple unexpected remedial works to be completed in order to provide the best possible chance of achieving a pass certificate. 

All of our Technicians are vastly experienced with providing ventilation testing in all types of dwellings ranging from studio flats to large scale mansions. We are able to provide extract testing as either a standalone service or as part of a wider discounted compliance package with our Air Tightness Testing.

 

Z

Highly Competitive Fees with substantial discounts available when extract tests are completed at the same time as Air Leakage Tests

Z

BPEC or NICEIC Qualified Technicians

Z

UKAS calibrated equipment

Z

Flexible Test Appointments

Z

Part F Air-flow Measurement Test Report for each dwelling

Z

Free Advice & Consultation - Our Technicians will work with you to overcome any issues that may be identified from the extract flow rate tests.

Recent EPS Group Projects

Air Testing & SAP Calculations, Stamford

Air Testing & SAP Calculations, Stamford

Commercial Air Test In Sheffield

Commercial Air Test In Sheffield

Commercial Air Test In Chesterfield

Commercial Air Test In Chesterfield

Commercial Air Test in London

Commercial Air Test in London

Commercial Air Test in Doncaster

Commercial Air Test in Doncaster

Room Integrity Test in Telford, Shropshire

Room Integrity Test in Telford, Shropshire

Commercial Air Test in Loughborough

Commercial Air Test in Loughborough

Residential Development, Lancaster

Residential Development, Lancaster

Existing Office Building, Manchester

Existing Office Building, Manchester

New Residential Development, Henlow

New Residential Development, Henlow

New Dwelling, Heage

New Dwelling, Heage

Mixed Use Development, Bradford

Mixed Use Development, Bradford

Redevelopment of Cherry Hinton Constitutional Club

Redevelopment of Cherry Hinton Constitutional Club

Day Nursery, Swinton

Day Nursery, Swinton

Wollaton View Care Home, Nottingham

Wollaton View Care Home, Nottingham

Tewkesbury Place, Nottingham

Tewkesbury Place, Nottingham

Modular Classroom, East Leake

Modular Classroom, East Leake

Clifton Triangle, Nottingham

Clifton Triangle, Nottingham

Clarendon Court Care Home, Nottingham

Clarendon Court Care Home, Nottingham

Apartments at Carlyle Road, West Bridgford

Apartments at Carlyle Road, West Bridgford

Chetwynd House Care Home, Nottingham

Chetwynd House Care Home, Nottingham

New Dwelling, Chorleywood

Church Road, Northolt

Church Road, Northolt

Tanyard House, Bexley

Tanyard House, Bexley

One Twenty Cockfosters Road, Enfield

One Twenty Cockfosters Road, Enfield

Wilford View Care Home, Nottingham

Wilford View Care Home, Nottingham

Redevelopment of Holy Trinity Church

Redevelopment of Holy Trinity Church

Travis Perkins, Milton Keynes

Travis Perkins, Milton Keynes

Rolls Royce UTC Laboratory

Rolls Royce UTC Laboratory

Spinners Heath, Ilkeston

Spinners Heath, Ilkeston

Kingsland Close, Doddington

Kingsland Close, Doddington

Grafton Quarter, Croydon

Grafton Quarter, Croydon

Orange Tree Stables

Orange Tree Stables

Lace Gardens, Ruddington

Lace Gardens, Ruddington

New Dwelling in Church Stretton

New Dwelling in Church Stretton

Alderley Edge

Alderley Edge

Cheadle Royal Hospital

Cheadle Royal Hospital

Air Testing & SAP Calculations, Stamford

Air Testing & SAP Calculations, Stamford

Commercial Air Test In Sheffield

Commercial Air Test In Sheffield

Commercial Air Test In Chesterfield

Commercial Air Test In Chesterfield

Commercial Air Test in London

Commercial Air Test in London

Commercial Air Test in Doncaster

Commercial Air Test in Doncaster

Room Integrity Test in Telford, Shropshire

Room Integrity Test in Telford, Shropshire

Commercial Air Test in Loughborough

Commercial Air Test in Loughborough

Existing Office Building, Manchester

Existing Office Building, Manchester

New Residential Development, Henlow

New Residential Development, Henlow

New Dwelling, Heage

New Dwelling, Heage

Mixed Use Development, Bradford

Mixed Use Development, Bradford

Day Nursery, Swinton

Day Nursery, Swinton

Wollaton View Care Home, Nottingham

Wollaton View Care Home, Nottingham

Tewkesbury Place, Nottingham

Tewkesbury Place, Nottingham

Modular Classroom, East Leake

Modular Classroom, East Leake

Clifton Triangle, Nottingham

Clifton Triangle, Nottingham

Apartments at Carlyle Road, West Bridgford

Apartments at Carlyle Road, West Bridgford

Chetwynd House Care Home, Nottingham

Chetwynd House Care Home, Nottingham

Travis Perkins, Milton Keynes

Travis Perkins, Milton Keynes

Rolls Royce UTC Laboratory

Rolls Royce UTC Laboratory

Spinners Heath, Ilkeston

Spinners Heath, Ilkeston

Kingsland Close, Doddington

Kingsland Close, Doddington

Lace Gardens, Ruddington

Lace Gardens, Ruddington

New Dwelling in Church Stretton

New Dwelling in Church Stretton

Alderley Edge

Alderley Edge

Cheadle Royal Hospital

Cheadle Royal Hospital

EPS Group: A Partner for those in the Construction Industry

We value the importance of a solid working relationship with those in the construction industry, and for many, we serve as the reliable go-to-company to entrust from the planning stage of a development through to completion.

What Our Clients say:

Proudly Working On Buildings For

Let’s discuss your Extractor Fan Flow Rate Testing project!

Anthony Godfrey
Anthony Godfrey
2022-07-18
We have recently completed a Grade 2 listed building project in London W1. We worked alongside ESP Group who carried out the energy performance and air tightness testing and monitoring for us on this scheme. We would like to thank Josh and the team for their help and assistance throughout the works and for their prompt issuing of the certificates on completion. We would highly rate working with the ESP Group.
Helen Smith
Helen Smith
2022-07-08
Excellent service and communication. Very professional, helpful and friendly
Dave holland
Dave holland
2022-06-16
Amazing and Excellent work
Scott Lyddon
Scott Lyddon
2022-06-07
I’ve just used EPS Group for the second time after being very impressed the first. I rarely write reviews but feel compelled to as this is a fantastic company to deal with!
Fay Bourne
Fay Bourne
2022-06-06
I wish to thank EPS for their swift service and assistance, it was very much appreciated.
Kitkat Katie
Kitkat Katie
2022-05-30
Excellent customer service and polite staff, very helpful when I needed to amend dates etc
Dawn walkington
Dawn walkington
2022-05-05
Excellent service and polite staff. The man doing the air test was freindly and turned up on time would recommend this firm.
Andy McIntosh
Andy McIntosh
2022-04-28
Well done EPS. Easy to deal with, helpful and delivered what they said they would.
Lee Wilsher
Lee Wilsher
2022-04-26
Incredibly helpful, couldn't do enough for me. helped with all my questions and delivered a very concise report that has proved invaluable. Fully recommend. Big shout out to Josh - thanks for all your effort and work. really nice to work and deal with someone who gets its done, communicates so well, and does what they say they will. Thankyou. KR. Lee.
Paul foster
Paul foster
2022-04-20