Replace outdated fuse boards with modern RCBO and surge-protected consumer units installed, tested, and certified for Croydon homes and nearby properties.
Older fuse boards, split-load boards with poor discrimination, and units without surge protection or RCBO coverage often justify a planned upgrade rather than repeated piecemeal repairs.
We replace outdated consumer units for Croydon homes and nearby properties where safety, nuisance tripping, poor labelling, or future load plans make the existing board a weak point. A proper upgrade starts with assessing the condition of the existing circuits, earthing, bonding, and enclosure position so the new board is matched to the installation rather than fitted in isolation.
Where the installation is suitable, most board changes can be completed in a day with full testing, certification, and practical handover notes. If wider issues are uncovered, we explain them clearly before energising the final arrangement so you know whether the next step is remedial work, fault finding, or broader rewiring.
A clear, step-by-step approach to ensure quality results
We inspect your existing consumer unit and electrical system to determine the best replacement option and identify any additional work needed.
We safely isolate your electrical supply and remove the old consumer unit. Your power will be off for 2-4 hours during the replacement.
We install your new 18th Edition consumer unit with RCD protection, connect all circuits, and clearly label everything for easy identification.
Comprehensive testing ensures everything works safely. You receive full electrical certificates and we notify building control on your behalf.
No hidden costs - know what to expect before we start
Standard consumer unit upgrade
Most popular - RCBO protection
For larger properties
All prices are subject to details and exclude VAT. Final pricing will be confirmed after inspection based on your existing installation and specific requirements. Additional costs may apply if remedial work is needed on existing circuits. All quotes are free and provided after inspection.
Common questions about consumer unit replacement
Typically 2-4 hours for a standard replacement. We work efficiently to minimize disruption and can often schedule the work to suit your needs, such as during working hours when you're out.
If your property has an old fuse box with rewirable fuses, lacks RCD protection, or is over 25 years old, you should upgrade. It's also required when selling a property or for insurance purposes.
An RCD protects multiple circuits, while RCBOs provide individual protection for each circuit. RCBOs are better as a fault on one circuit won't affect others, preventing nuisance tripping.
Yes, as NICEIC approved contractors, we handle all building regulations notification on your behalf. You'll receive a compliance certificate for your records.
Yes, we offer same-day service for consumer unit replacements. Contact us in the morning and we can often complete the work the same afternoon, subject to availability.
We'll assess your wiring during inspection. If it's in poor condition, we'll recommend necessary upgrades. Sometimes a full rewire is more cost-effective than patching old systems.
Get your free, no-obligation quote today
If your board upgrade is part of a wider safety or capacity issue, the pages below provide the clearest next steps for local testing, diagnostics, and linked remedial work.
Most upgrade projects in this part of South London and Surrey begin with a quick capacity and condition review, especially where older boards are still in service or where higher-load additions are planned. We prioritise safe isolation, clear circuit labelling, and practical RCBO layout design so clients get fewer nuisance trips and a cleaner route for future works.