About MCS

MCS is a mark of quality and demonstrates compliance to industry standards that companies strive to meet. It highlights to consumers that companies are able to consistently install or manufacture to the highest quality every time.

Contact Us

The dedicated MCS Helpdesk Team would be happy to answer any questions you have, please call 0333 103 8130

Before contacting the MCS Helpdesk please see below and/or refer to the FAQ section on this website, as your query may be listed there.


Independent and impartial advice about energy efficiency for your home, or government incentive schemes for consumers in England and Wales can be obtained from the Energy Saving Advice Service on 0300 123 1234 (standard national rate, opening hours Mon-Fri 9am- 8pm, 10am-2pm Sat) or at www.energysavingtrust.org.uk. Advice for consumers in Scotland can be obtained from Home Energy Scotland on 0808 808 2282 (9am-5pm, Mon-Fri) or at www.greenerscotland.org

Do you have a question about your Feed in Tariff (FIT) or Renewable Heat Incentive (RHI) application?

MCS does not administer these schemes and is unable to advise on the progress or eligibility of your application to claim incentives. Please contact Ofgem for queries of this nature.

  • For questions regarding your FIT application, please contact your Energy Supplier
  • For questions regarding your RHI application, please contact Ofgem.

Are you trying to get hold of your MCS Certificate?

Your MCS Contractor must have been MCS Certified when the system was commissioned. Please contact the MCS Contractor to obtain a copy. The MCS Standards state the MCS Contractor must issue the certificate within 10 days of commissioning. If they do not, you are able to submit a formal complaint due to the breach of the MCS Standards.

Are you trying to fix incorrect details displayed on your MCS Certificate?

If your MCS Contractor is still operating, they must ensure all details are correct on the certificate and reissue a corrected certificate. However, if the installer is no longer operating, MCS can make the amendment on their behalf and issue the corrected certificate. Please ensure you complete the steps outlined here in order for MCS to process your certificate. It may delay us sending your certificate if you do not fully complete the process before submitting your request. Please note, information contained on the MCS Certificate is protected. Details cannot be given out over the phone or via email. The only instance in which information can be given is upon receipt of proof of ownership from the owner of the system. Downloadable document

Are details of your company incorrectly displayed on our website?

MCS Certified Contractor and Product information is based on data received from the Certification Bodies on a weekly basis. Please direct information amendment requests to your Certification Body directly. Our records will be updated within five working days accordingly.

Have you missed the 10 day window to generate an MCS Certificate or need to amend the commissioning date for an existing certificate?

Please apply for Extended Access to the MID by completing the online form.

Are you trying to amend an MCS Certificate?

In order to make an amendment, simply log in to the record and navigate through to the required section and make the amendment required. Once that is complete ensure you click “Finish” on the final page. This will generate a new version of the existing certificate, however the certificate number will remain the same. Fields that can be amended include:

  • Address details
  • Meter details
  • Product details
  • EAG, DNC and EAG

You do not require permission from MCS to make the above changes. However, all changes will be kept on record.

Do you require technical assistance?

MCS is unable to provide technical assistance. Please contact your Certification Body for technical advice to ensure the installation complies with the MCS Standards.

Are you trying to remove an MCS Certificate off the MCS Installation Database (MID)?

Under no circumstances can MCS Certificates be removed from the MID. However, duplicates and certificates created in error can be withdrawn by the MCS Administrator. To make such a request please email mcscompliance@gemserv.com.

Are you trying to register your first installation?

Please follow this link for information on how to register your first installation Downloadable document

MCS administer the scheme on behalf of the Department for Business, Energy and Industrial Strategy (BEIS) MCS is a quality assurance scheme. However, the MCS Certificate does not automatically ensure the system is covered by insurance or warranty. MCS ensures the quality of an installation up to, and including, commissioning and handover. The scheme does not cover maintenance or repair.

If you wish to submit a complaint about a MCS Certified Contractor or Product, or about the Scheme governance please see MCS Complaints. For additional complaint guidance please click here. Please note we are not able to process emails as complaints without the full declaration to the Terms and Conditions being acknowledged.

MCS Helpdesk

The MCS Helpdesk is operating 9.00am – 4.30pm. Calls may be recorded for training or monitoring purposes. 

Information submitted through the form will be processed in accordance with the Privacy Policy.

The MCS Service Company Limited (MCSSCo), Suite F40, Innovation Centre, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Cheshire WA4 4FS

+44 (0) 333 103 8130

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