Understand what a consumer unit upgrade can change, what needs separate repair and why replacement is not an automatic energy-saving measure.
Understand the reason for the work
A consumer unit replacement may form part of repairs, improvements or an installation project. The appropriate arrangement depends on an assessment of the existing circuits and the planned use. The board’s age or appearance alone does not establish the complete work needed.
It does not repair every circuit
Damaged wiring, poor connections or an appliance fault may need separate investigation or remedial work. Ask the electrician to explain the findings and how they affect the proposed replacement. Do not assume that fitting a new board guarantees an end to every trip or lighting problem.
It is not an automatic energy-saving measure
A new consumer unit should not be sold as a guaranteed way to reduce electricity bills. Discuss the purpose of the protective equipment and any separate lighting or control improvements. Energy use depends on equipment and how it is operated, not simply the age of the board.
New work requires an assessment
Tell the electrician about a planned EV charger, kitchen, extension or garden room. The existing installation and proposed load need to be assessed. A new board alone does not automatically increase the capacity of the incoming electricity supply.
Ask for a complete quotation
Clarify the equipment, assessment, testing, documentation and treatment of existing faults. Send accessible photographs, your postcode and any electrical report. We can discuss the appropriate next step without assuming a replacement is always required.
Discuss the work for your property
Send your postcode, a description of the work and any useful photographs or existing report. Start with our consumer unit replacement.
Further reading: the IET explains how existing installations are assessed; an older installation is not automatically unsafe because a standard has changed.