Professional Fuse Box Replacement in London
Fuse box replacement London services carried out by qualified NAPIT registered electricians at VoltHeat Electrical & Heating.electricians.
At VoltHeat Electrical & Heating, we install modern 18th Edition consumer units with RCBO and SPD protection to improve electrical safety, reduce nuisance tripping, and help ensure compliance with current UK regulations.
Whether your property still has an old fuse board, suffers from frequent tripping, or has failed an EICR inspection, we provide professional fuse box replacement services with full testing and certification included.
✔ RCBO Consumer Units
✔ SPD Surge Protection
✔ Full Electrical Testing
✔ Certification Included
✔ Landlord & Domestic Services
✔ London Coverage
Why Replace an Old Fuse Box?
Older fuse boxes were not designed for modern electrical demands. Many older installations still contain outdated rewireable fuses, split-load boards without RCBO protection, or consumer units that no longer meet current safety expectations.
A modern consumer unit upgrade can significantly improve the safety of your installation by adding:
- Individual RCBO protection
- Surge Protection Devices (SPD)
- Improved fault detection
- Faster disconnection times
- Better circuit separation
- Reduced risk of electric shock and fire
Many landlords and homeowners only discover problems with their fuse board after:
- a failed EICR,
- nuisance tripping,
- overheating,
- or electrical faults begin affecting the property.
Replacing an old fuse board can also help improve reliability for modern appliances, kitchens, showers, EV chargers, and extension circuits.
Signs Your Fuse Box May Need Replacing
You may require a fuse box replacement if you notice:
- Frequent tripping circuits
- Burning smells near the consumer unit
- Flickering lights
- Old rewireable fuses
- Lack of RCD protection
- Overheating breakers
- Cracked or damaged fuse boards
- Failed EICR observations
- Extension leads used throughout the property
- Electrical work added over many years
Many older Wylex or outdated consumer units no longer provide the level of protection expected under current standards.
At VoltHeat, we carry out testing before replacement to help identify potential issues with existing wiring and electrical faults before a new consumer unit is installed.
In some situations, additional electrical fault finding may be required where circuits are tripping, damaged, or unsafe.
Modern RCBO Consumer Units Explained
Modern consumer units provide significantly improved protection compared to older fuse boards.
We typically install RCBO-based consumer units which provide individual protection for each circuit. This means if a fault occurs on one circuit, it is less likely to affect the rest of the installation.
Modern upgrades may also include:
RCBO Protection
RCBOs combine overload, short-circuit, and residual current protection into one device.
SPD Protection
Surge Protection Devices help protect sensitive electronics and appliances from transient overvoltage spikes.
Type A Devices
Modern Type A RCBOs provide improved protection for modern electronic equipment commonly found in UK homes.
18th Edition Compliance
All installations are completed in accordance with current BS 7671 wiring regulations.
Fuse Box Replacement Cost in London
What Is Included With Our Fuse Box Replacements?
The cost of fuse box replacement can vary depending on:
- number of circuits,
- condition of existing wiring,
- testing requirements,
- and the type of consumer unit installed.
Typical fuse box replacement costs may start from approximately:
- Small 4-way consumer units from £380+
- Standard RCBO consumer unit upgrades from £500+
- Larger properties or remedial works may vary
All quotations are subject to inspection and testing of the existing installation.
Our quotations typically include:
- Removal of old fuse board
- Installation of new consumer unit
- RCBO protection
- SPD protection
- Testing and verification
- Electrical certification
- Circuit identification and labeling
Our fuse board replacement service typically includes:
✔ Safe isolation procedures
✔ Removal of old fuse board
✔ Installation of modern RCBO consumer unit
✔ SPD surge protection
✔ Circuit testing
✔ Zs verification
✔ RCD / RCBO testing
✔ Electrical certification
✔ Circuit labeling
✔ Minor adjustments where required
Where faults are identified during testing, additional remedial work may be recommended before energising the installation.
We focus on providing safe, compliant, and professionally installed consumer unit upgrades across London for landlords, homeowners, and rental properties.
Why Choose VoltHeat?
Why Choose a TrustMark & NAPIT Registered Electrician?
Choosing a qualified and properly registered electrician is important when carrying out fuse box replacements and consumer unit upgrades.
At VoltHeat Electrical & Heating, we believe electrical work should be completed safely, professionally, and in accordance with current UK wiring regulations.
Using a NAPIT registered electrician helps provide reassurance that electrical work is completed by a competent professional able to inspect, test, and certify installations in accordance with current standards.
TrustMark is a UK Government-endorsed quality scheme designed to help customers find reliable and professionally registered tradespeople.
Choosing a properly registered electrician can help provide:
✔ Improved electrical safety
✔ Proper testing and certification
✔ Compliance with current regulations
✔ Professional workmanship
✔ Greater confidence for landlords and homeowners
Whether replacing an outdated fuse board or upgrading to a modern RCBO consumer unit, proper testing and certification remain essential for electrical safety.
Frequently Asked Questions
VoltHeat Electrical & Heating provides professional electrical services across London with a strong focus on safety, testing, and compliance.
Why customers choose us:
✔ NAPIT Registered
✔ 18th Edition Qualified
✔ Experienced in EICR & electrical testing
✔ Professional RCBO upgrades
✔ Full testing included
✔ Landlord and domestic services
✔ Same-day certification where applicable
✔ Transparent and professional approach
We understand that replacing a fuse box is not simply changing a board — proper testing and verification of the installation is essential to ensure safety and compliance.
At VoltHeat, we focus on modern installations, professional workmanship, and reliable electrical safety solutions for homes, landlords, and rental properties across London.
How much does fuse box replacement cost in London?
The cost of fuse box replacement depends on the number of circuits, condition of existing wiring, and the type of consumer unit installed. Standard RCBO consumer unit upgrades in London typically start from around £500+.
Do I need a new fuse box to pass an EICR?
In some situations, yes. Older fuse boards without RCD or RCBO protection may receive observations during an EICR inspection and replacement may be recommended
How long does a fuse box replacement take?
Most fuse box replacements can usually be completed within one day depending on the condition and complexity of the installation.
Can old wiring fail a consumer unit upgrade?
Yes. Faults such as low insulation resistance, borrowed neutrals, or damaged wiring may require remedial work before a new consumer unit can safely pass testing
Is fuse box replacement a legal requirement?
While older fuse boxes are not automatically illegal, modern consumer units provide significantly improved electrical safety and protection in accordance with current regulations.
What is the difference between a fuse box and consumer unit?
The terms are often used interchangeably. Modern consumer units provide far greater protection compared to older fuse boxes and rewireable fuse systems.
Is SPD protection mandatory in the UK?
Current BS 7671 regulations require Surge Protection Devices (SPD) in many domestic installations unless a risk assessment determines otherwise.
Can you replace old Wylex fuse boards?
Yes. We regularly replace older Wylex and rewireable fuse boards with modern RCBO consumer units across London.
Will the power be off during the fuse box replacement?
Yes. Temporary electrical isolation is required while the consumer unit replacement is completed safely.
Will I receive certification after the work?
Yes. Electrical certification is issued following completion, inspection, and testing of the installation.
Do landlords need modern consumer units?
Landlords must ensure installations are electrically safe. Modern RCBO consumer units can help improve safety and EICR compliance in rental properties.
Can you replace fuse boxes in flats and apartments?
Yes. We provide fuse box replacement services for houses, flats, apartments, and rental properties throughout London.
Areas We Cover Across London
VoltHeat Electrical & Heating provides professional fuse box replacement services across London for homeowners, landlords, flats, apartments, and rental properties.
We cover a wide range of London areas and surrounding locations, providing professional consumer unit upgrades, electrical testing, and fuse board replacements completed to current BS 7671 regulations.
Whether you require replacement of an outdated fuse board, RCBO upgrades, or a modern consumer unit installation, we aim to provide safe, reliable, and professional electrical services across London.
Book Your Fuse Box Replacement
If your fuse box is outdated, frequently tripping, overheating, or has failed an EICR inspection, VoltHeat Electrical & Heating can help.
We provide professional fuse board replacement and consumer unit upgrades across London with testing and certification included.
Contact VoltHeat today to arrange a quotation or discuss your electrical installation requirements.
✔ NAPIT Registered
✔ RCBO Consumer Units
✔ SPD Protection
✔ Testing & Certification Included
✔ Domestic & Landlord Services