Electrical System Upgrades
Modern Consumer Unit Replacements.
The heart of your electrical safety system. We replace outdated fuse boards with modern consumer units featuring advanced RCD, RCBO, and surge protection, safeguarding your property against electrical faults.
- Protection
- RCBO on each circuit
- Surge protection
- SPDs where appropriate
- Power off
- Usually 4 to 8 hours
- On completion
- Electrical Installation Certificate
Upgrading the Core of Your Electrical System
The consumer unit (or fuse board) distributes electricity around your property and automatically disconnects the power when a dangerous fault occurs. It is the most important safety component you have.
Many older properties still have rewirable fuses or early trip switches that don't meet modern BS 7671 regulations. An older board does not automatically mandate replacement, but a modern non-combustible unit with RCD protection is a major step up in protection against shock and fire.
During
AfterWhen Should You Consider a Replacement?
Following an Unsatisfactory EICR
No RCD protection for sockets or concealed cables (commonly a C2 or C3 code)? A new consumer unit is often the most cost-effective fix.
During Major Renovations
Extensions, EV chargers, and major rewiring can need more capacity and safety features than your current board offers.
When You Have Outdated Tech
Wooden backing, rewirable fuse wire, or no RCD protection at all: an upgrade is strongly recommended for your safety.
Modern Protection Explained
Our standard installations use RCBOs, which protect each circuit individually. A faulty kettle trips only the kitchen sockets, leaving your lights and fridge running.
Where appropriate, we also fit Surge Protection Devices (SPDs) to protect televisions, computers, and smart home equipment from voltage spikes caused by grid switching or lightning.
How the Installation Works
Survey and Quote
We look at your existing board and circuits and send a clear, itemised quote.
Agree a Time
The power is off while the new unit is fitted, so we agree timings with you in advance.
Fit and Test
We install the new consumer unit and test every circuit before the power goes back on.
Certificates
You receive an Electrical Installation Certificate, and we notify building control under Part P.
Adrian replied promptly and offered a very reasonable price. Lam, the electrician, finished the job quickly with excellent workmanship.
“They were professional, punctual and efficient. They were able to attend my property to provide a quote at extremely short notice and, better yet, were able to complete the job the following day having provided the quote.”
“Communication has always been superb. Adrian and Lam are a great team and a pleasure to work with! Their prices are competitive, they work efficiently, professionally, and with a passion for their trade.”
Credentials
NICEIC Approved Contractor
Check our registration on the NICEIC register. Copies of our NICEIC certificate and insurance schedule are available on request.
Registration No.
616773000
- Public liability insurance
- £5mPublic liability insurance
- Employers' liability insurance
- £10mEmployers' liability insurance
- Professional indemnity insurance
- £250kProfessional indemnity insurance
- Google rating
- 4.8/5from 22 Google reviews
Consumer Unit Replacement Across London and Hertfordshire
From our base in Welwyn Garden City. See all areas covered.
Frequently Asked Questions
Can’t see your question? Call 07925 063137 for a direct answer.
How much does a consumer unit replacement cost?
It depends on the number of circuits, the condition of the existing wiring, and whether earthing and bonding need upgrading. You get a full, transparent quote before any work starts.
Will you need to test the whole house?
Yes. Every circuit must be tested before the new unit is energised, so hidden faults don't trip its sensitive RCDs. You will receive a full Electrical Installation Certificate on completion.
How long will the power be off?
For most of the day: usually 4 to 8 hours for a typical home, including full testing.
Get in touch
Secure your property with a modern consumer unit
Whether advised by an EICR or for your own peace of mind, contact our NICEIC Approved team to discuss upgrading your electrical protection.