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Gas Engineers changing Thermostats & Timers?

If a Thermostat or Timer needs to be changed, can a Gas Engineer carry out this work?

Or does it require a MWC?

On our Housing EICR's a Limitation is declared, that no Central Heating controls are tested past the Fused Connection Unit.


Regards Chris.


  • If you mean legally, anyone can do it.  It might be wise if they are doing it as a business for them to have some technical training before hand.

    For that matter anyone can fill out an MWC - though it seems that some are better than others at doing so.
  • It may come as a surprise, but the plumbing and gas installation technical certificates and NVQ syllabi have a limited electrical element to them, usually something along the lines of:

    ' Understand and carry out electrical work on domestic plumbing and heating systems / gas systems and components'


    The standard textbooks such as Plumbing or Gas Installation Technology, both by RD Treloar give some insight as to the breadth and depth of the electrical element.


    As Mike has already said, electrical work isn't like gas work, where only a specified class of person can carry out the work - but in any case the requirements of the Electricity at Work Regulations 1989 must be met, in particular the requirements of Regulation 16 relating to competence.