Home / Consumer unit replacement
5.0 from 173 Google reviews 0% finance availableConsumer unit and fuse box replacement
Swap an old fuse box or plastic board for a modern consumer unit with full RCD protection. Fixed written price, usually done in a day, and certified when we finish.
Signs your board needs replacing
- Rewireable fuses (the old pull-out ones with wire inside)
- A plastic consumer unit rather than a metal one
- No RCD, the switch that cuts power in a fraction of a second if someone touches a live fault
- Trips that keep happening, or a board that feels warm or smells
- An EICR or insurer has flagged it
- You’re adding an EV charger, heat pump, new kitchen or extension
Not sure? Send us a photo of your board on WhatsApp and we’ll tell you honestly whether it needs doing.
Send a photo on WhatsAppWhat’s included
- Free survey and fixed written quote
- New metal consumer unit with RCD or RCBO protection on every circuit
- Surge protection where the regulations call for it
- Full test of every circuit before power goes back on
- Building control notification under Part P
- Electrical Installation Certificate
0% finance over 6, 9 or 12 months, subject to status.
Book a free survey
Before
AfterOne of our recent board changes
This home still had its original fuse box with rewireable fuses and no RCD protection at all. We replaced it in a day with a new metal consumer unit, an RCBO on every circuit so one fault only trips that circuit, and surge protection.
Every circuit was tested, labelled and certified before the power went back on.
Get a price for yoursHow a board change works
Free survey
We check your board, earthing and circuits, in person or from photos.
Fixed price
You get a written quote with exactly what’s included.
Install day
Power off, new board fitted, every circuit tested. Power back on before we leave.
Certificate
Your certificate and building control notice follow by email.
More board changes
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AfterOn the job
0% finance available on board changes
Spread the cost over 6, 9 or 12 months at 0%. Pay the monthly minimum or clear it early with no penalty. A £99 deposit secures your date.
Representative 0% APR. £99 deposit. Subject to status and affordability. SmartWired Electrical Contractor Ltd is not a lender; 0% finance is provided by PayItMonthly Ltd. Late or missed payments could impact your ability to access credit in the future. Terms and conditions apply.
What customers say
“I was really happy with the work that SmartWired Electrical did. Nothing was a problem and they were very professional. Work site was left tidy. Will definitely hire them again.”
Simon W.
“Cannot recommend these guys enough after having them around to my new home to check and install new lights and fixtures. The boys were on time and very professional even when having to trace existing wiring thru the ceiling and walls and no hidden costs.”
Chris R.
“Very professional and a quality job. Took pride in his work so will use these services again.”
Melanie S.
“Excellent service. Job completed to high standard and done so efficiently. Highly recommend SmartWired Electrical.”
Steve C.
Consumer unit questions
How long does a consumer unit replacement take?
Most board changes in a house are done in a day. Your power is off for most of that time while we swap the board and test every circuit, and it’s back on before we leave.
How much does a new consumer unit cost?
It depends on the number of circuits, the protection your home needs and what testing finds, so we give you a fixed written price after a free survey. 0% finance is available over 6, 9 or 12 months, subject to status.
What if testing finds faults on my existing wiring?
Older circuits sometimes show faults once modern protection is fitted. If that happens we show you what we found and price the fix before doing anything. You never get an unagreed extra on the invoice.
Do I get a certificate?
Yes. A board change is notifiable work under Part P of the Building Regulations. As a NAPIT approved contractor we register it with building control and give you an Electrical Installation Certificate. Keep it for insurance and when you sell.
I’m a landlord. Can you work around tenants?
Yes. We book a time with your tenants, keep the outage to the working day and send you the certificate once it’s done. We can do the EICR at the same visit.
Get your free, fixed-price quote
Tell us what you need and we’ll call you back within 24 hours. No pushy sales, and no obligation.
- Fixed written price before any work starts
- 0% finance on board changes, rewires and EV chargers
- Our own NAPIT approved electricians, not subcontractors
- Every job tested and certified
Prefer to talk now?
Thanks, we’ve got your details
We’ll call you back within 24 hours. If it’s urgent, call 0333 335 5767.