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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.

The MCS Installation Database (MID) will be undergoing maintenance and will not be accessible from 15:00 on Tuesday 15th September. Please do not try to access the database during this time as you will be unable to generate certificates and it is unlikely that any MCS certificates will be sent out. We expect the website to be unavailable for at least 2 hours and an update will be placed on the news and events section of the MCS website when the maintenance is complete.

As part of the maintenance work, MCS will be implementing some upgrades to the MID. The upgrades include:

  • Installers can now enter the details for multiple recipients and products when creating an MCS certificate. Until now, if an installer has installed a system using two or more different products then multiple MCS certificates would be required.
  • MCS will have the ability to withdraw MCS certificates. This function is likely to be used where a system has been registered which is found to be non-compliant with MCS requirements. Any withdrawn certificate will still be available to download but will be flagged as withdrawn and show a withdrawn watermark.
  • A question has been added requiring installers to declare whether the relevant permissions have been obtained to connect the system to the electricity grid (applicable technologies only). The question reads: "Please confirm that you have obtained permission from the Distribution Network Operator (DNO) to connect to the electricity grid?" 
  • Heat Pump installers will be asked to record 'Heat Emitter Guide likely SPF' or 'Product Seasonal Performance (SCOP/SPER/SPF)' data when registering a heat pump.