Modern consumer unit installation in Watford home
18th Edition • RCBO Protection • Prompt Install

Consumer Unit Upgrade
Watford & Hertfordshire

Modern fuse board replacements with full RCBO protection and 18th Edition compliance. Protect your home with the latest safety standards, installed by fully qualified electricians across Watford and Hertfordshire.

Book Your Upgrade Get a Free Quote
Why Upgrade?

Signs You Need a New Consumer Unit

Your consumer unit is the heart of your home's electrical system. An outdated fuse board puts your property at risk of fire and electric shock. Modern units with RCBO protection and metal enclosures dramatically improve safety.

  • Plastic fuse board (pre-2016 regulations)
  • Rewireable fuses instead of modern MCBs
  • No RCD protection on sockets or circuits
  • Frequent tripping or nuisance RCD trips
  • Adding new circuits (EV charger, extension, hot tub)
  • Planning to sell or rent your property

What You Get with Our Upgrade

  • BS EN 61439-3 compliant metal enclosure
  • Individual RCBO protection on every circuit
  • Surge protection device (SPD) included
  • Full circuit labeling and schedule of tests
  • 18th Edition BS 7671 certificate
  • 5-year workmanship guarantee
The Process

How Your Upgrade Works

01

Assessment

We inspect your current setup, count circuits, check earthing, and identify any issues before quoting.

02

Isolate

We safely disconnect your supply, label all existing circuits, and prepare for the new unit installation.

03

Install

Your new metal consumer unit is mounted, circuits connected with RCBOs, and surge protection fitted.

04

Test & Certify

Every circuit is fully tested for continuity, insulation resistance, and RCD functionality. Your BS 7671 certificate is issued.

Modern Protection

Types of Consumer Units We Install

Most Popular

Standard RCBO Unit

Metal enclosure with individual RCBO protection on every circuit. Includes main switch and neutral/earth bars. Ideal for most 3-4 bedroom homes.

From £450
Maximum Safety

SPD-Enhanced Unit

All the benefits of the RCBO unit plus a built-in Surge Protection Device to safeguard your electronics from lightning strikes and power surges.

From £550
Large Homes

High-Capacity Unit

14-way or larger units for properties with many circuits, outbuildings, EV chargers, or planned extensions. Custom configurations available.

From £650
Why The Core Services

Why Choose Us for Fuse Board Replacement?

Prompt Power Restoration

Most upgrades are completed in a single day. We work efficiently so you are not left without power overnight.

Full Certification

You receive a complete BS 7671 Electrical Installation Certificate and a detailed schedule of test results for your records.

Combined Upgrades

If your earthing needs upgrading or you want to add new circuits, we can do it all during the same visit for better value.

18th Edition Experts

All our electricians are qualified to the latest 18th Edition of BS 7671, ensuring your installation meets the highest current standards.

Consumer Unit Upgrades Across Watford & Beyond

We replace fuse boards throughout Watford, Hertfordshire, North London, and Central London.

WatfordSt AlbansHemel HempsteadRickmansworthBusheyRadlettBorehamwoodBarnetEnfieldCentral London
FAQ

Consumer Unit Questions

You should consider upgrading if your fuse board is over 15 years old, made of plastic (pre-2016), lacks RCD protection, has rewireable fuses instead of MCBs, or you are adding new circuits like an EV charger or extension. A modern metal consumer unit with RCBOs provides the best protection and complies with current regulations.
An RCBO (Residual Current Breaker with Overcurrent protection) combines the functions of an MCB and RCD in one device. Unlike shared RCDs that can trip multiple circuits, RCBOs protect each circuit individually. This means if your kitchen socket has a fault, only the kitchen trips, not your entire upstairs.
A standard consumer unit replacement takes 4 to 8 hours. We arrive in the morning, safely isolate your supply, remove the old unit, install the new one with proper labeling and circuit segregation, test everything thoroughly, and restore power promptly.
Yes, your electricity will be off during the installation. We plan the work to minimize disruption and typically complete it within a single day. We will advise you in advance so you can plan accordingly. For essential needs, we can arrange temporary power solutions.
Absolutely. Every consumer unit we install complies with the 18th Edition of BS 7671. This includes metal enclosure (for fire containment), RCBO protection on all circuits, surge protection where specified, and full certification upon completion.
A standard 10-way metal consumer unit upgrade with RCBO protection starts from £450 including supply, installation, testing, and certification. Prices vary based on the number of circuits, accessibility, and whether additional work like earthing upgrades is needed.
New consumer unit installed in Watford home

Upgrade Your Fuse Board Today

Protect your home with a modern, compliant consumer unit. Fast installation with full certification.

Call 01483 36 30 60 Request a Quote

Related Electrical Services

EICR Testing

Electrical safety inspection certificates

EV Charger Installation

Upgrade your supply for EV charging

Emergency Electrician

Tripping circuits and fault finding

House Rewiring

Complete electrical system upgrades

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