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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.

MCS has today published Issue 1.0 of the MCS Heat Pump System Performance Estimate template referenced throughout Issue 5.0 of MIS 3005 (Requirements for MCS Contractors undertaking the supply, design, installation, set to work, commissioning and handover of microgeneration heat pump systems).

  • A new MCS Heat Pump System Performance Estimate has been published for use with Air Source Heat Pump and Ground Source Heat Pump installations. This formula is mandatory to use at quotation stage if the property is eligible for a domestic EPC. This requirement replaces Appendix E of MIS 3005 Issue 4.3 which has been removed.
  • This would give a potential consumer an estimate of heat pump running costs compared to their existing heating system as well as estimated RHI income and likely capital cost. All MCS Contractors will use the same format, providing clarity and comparability for the consumer.
  • MCS Contractors will be required to use the EPC for the MCS Heat Pump System Performance Estimate to calculate a whole house demand.
  • A room by room heat loss calculation will still be required but can now take place as a final design/installation survey after a contract is agreed between the parties. The option remains to complete the full room by room heat loss calculation and present the system design to the customer before the contract is signed.
  • As stated above, contracts can now be signed on the basis of the preliminary Quote and MCS Heat Pump System Performance Estimate prior to the full design survey. If there is a change to the agreed design and/or estimated performance of the system (including but not limited to any financial projections) as a result of completing the full emitter selection and room-by-room heat loss, the MCS Contractor must issue to the customer a variation to contract and an updated MCS Heat Pump System Performance Estimate. If the customer and the MCS Contractor cannot agree the variation to contract then the customer may cancel the existing contract without cost, obligation or liability.

Heat pumps installed in accordance with Issue 5.0 from 17th May 2017 may be eligible to apply to the RHI.

 Key Dates 
28th April 2017 MIS 3005 Issue 5.0 published.
30th August 2017 MCS advise that installation fees to be increased from £15 to £35 on 22nd September.
19th September 2017 MCS publish MCS Heat Pump System Performance Estimate template and supporting documentation to allow MIS 3005 Issue 5.0 to be used.
20th September 2017 RHI regulations introduce heat demand limits and increase tariff rates for ASHPs and GSHPs.
22nd September 2017 New MCS Installation fees come into force (£35/installation).
30th October 2017 Mandatory compliance with MIS 3005 Issue 5.0 unless contract has been signed prior to 30th October, in which case Issue 4.3 can still be used.

 

This means that Issue 5.0 of MIS 3005 may be used for projects commencing after 17th May 2017, and must be used for projects commencing on or after 30th October 2017. MCS Contractors must commence working in accordance with Issue 5.0 by 30th October 2017.

Where contracts have been signed for installations in accordance with Issue 4.3 of MIS 3005 prior to 30th October 2017, the system may be installed in accordance with Issue 4.3 of MIS 3005 and could be eligible for RHI if applying within 12 months of the first commissioning date.

Any work on installations in which contracts will be signed on or after the 30th October 2017, must commence working in line with Issue 5.0 of MIS 3005.

We have also published updates to the following:

Heat Pump Compliance Certificate

Version 2.0 of the Heat Pump Compliance Certificate has been published.

  • The Compliance Certificate has been reduced to remove duplication where information is entered on the MCS certificate.
  • Version 1.2 of the Heat Pump Compliance Certificate should be used with Issue 4.3 of MIS 3005.
  • Version 2.0 of the Heat Pump Compliance Certificate should be used with Issue 5.0 of MIS 3005.

Heat Pump Handover Pack Information

  • The Heat Pump Handover Pack Information has been reduced in line with MIS 3005 Issue 5.0.

Heat Pump Calculator

  • Version 1.7 of the Heat Pump Calculator has been published.
  • The calculator has been updated to include version 2.0 of the Heat Pump Compliance Certificate and guidance.

MGD 002

The guidance document MGD 002 is currently under development to reflect the changes to MIS 3005 and will be published at a later date.

If you have any questions regarding any of these amendments please contact the MCS Helpdesk.