All you need to operate Window Energy Ratings
ER Certification Ltd - All you need to operate Window Energy Ratings

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Our test laboratory

The ERC Testing Ltd. test laboratory is based in Leigh, Lancashire. It provides testing services for the windows, door and safety glass industries.

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ER Certification Ltd makes every effort to ensure that our clients receive an effective and timely service. We set ourselves high standards but recognise that on occasions we may fail to reach these. On such occasions, we welcome feedback to help us to review and improve our procedures.


In the event of a complaint, we would ask the client to provide details in writing using our Complaint Form, which is available on request from . Upon receipt of the complaint in writing, we will acknowledge this within 2 working days. The complaint will be investigated and a response provided quickly, which will normally be within 10 working days. In the event that this is not possible, we will provide an explanation together with a projected completion date. Our written response to any complaint will also include details of the appeals procedure in the event that this fails to satisfy.



Other feedback

Equally, if clients or other interested parties feel that we have surpassed expectations we will be pleased to receive comments accordingly and would ask that these are forwarded to us by email to : OR by post to : 10 Aldershaw Close, Stafford ST16 1SX