Independent AirTightness Testing Scheme (iATS)

iATS operates as a DCLG approved Competent Persons Scheme for companies (including sole traders and partnerships) who undertake Air-Pressure testing of commercial and residential buildings nationwide.

On 1st June 2017 Elmhurst Energy Systems Limited took ownership of the scheme (see news release here) to secure its future as an independent scheme focussed on the needs of members and with the additional resources and strategic direction that Elmhurst can provide.

Currently an iATS Members?

Elmhurst wish to assure members that it is very much 'business as usual' for existing iATS Members, with processes and fees remaining as they are. The support line number remains the same 0300 6880016 where one of the large technical support team is waiting to take your call, 9am to 5pm, Monday to Friday.

The information presented on the iATS website can still be accessed and remains relevant, which includes the iATS FAQ Page.

Benefits of iATS Membership with Elmhurst?

Elmhurst is the UK’s largest energy assessor accreditation scheme and has over 20 years of experience working with UK Building Regulations. Our knowledge, expertise and influence of Government’s Standard Assessment Procedure (SAP), and Part L of the Building Regulations ensures we are ideally placed to provide support to iATS members.

Elmhurst has the resources to deliver a sustainable scheme that meets the expectations of both sole traders and larger businesses, and is committed to maintaining a high quality service for all iATS members.

Routes to iATS Scheme Membership 

We offer different routes to iATS membership depending on your existing competence/training in Air Tightness testing. If you have any questions or require additional information about how to join the scheme, iATS FAQ page could provide some answers (http://www.iats-uk.org/faq/).

iATS Annual registration, audit fees and levels *

Levels

The NOS and MTC sets out three levels of buildings and is defined using the BS EN 13829:2001.
BS EN Standard 13829:2001 - ‘Thermal Performance of Buildings - Determination of air permeability
of buildings - Fan pressurisation method’.

Level 1
Air tightness testing for single dwellings and other small simple buildings up to 4,000 m3

Level 2
Air tightness testing for non-simple buildings over 4,000 m3

Level 3
Air tightness testing for large, complex, high rise and phased handover zonal buildings


Annual Registration Fees 

The Annual Registration Fees in audit and non audit years are as follows:

Note that all prices exclude VAT

Level 1

Level 2

Level 3*

*Points to note

  • Level 3 costs may increase further due to finalisation of assessment requirements.
  • 2nd and subsequent testers in any organisation are at a reduced rate to reflect economies of
    scale in surveillance requirements. All costs are subject to VAT.

Monthly Lodgement Fees 

Only chargeable after online Lodgement system is operational.

1 – 20 @ £2.25 each
21 – 50 @ £1.75 each
50 – 100 @ £1.50 each
100+ @ £1.00 Each

Lodgement fees are cumulative, i.e. if your organisation/company undertakes 30 tests in a month,
the cost will be £62.50 (20 tests @ £2.25, plus 10 @ £1.75).


Lodgement fees are set irrespective of building size. All charges are subject to VAT and will be paid in arrears.

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