Fuse Box Replacement York
Fuse Box Replacement: Why, When & What’s Involved
Your fuse box — or consumer unit — is the heart of your home’s electrics. If it’s outdated, everything downstream is at risk. Here’s how to tell if yours needs replacing — and what to expect when it does.
Fuse Box Replacement Pricing in York
I price fuse box replacements by circuit count — because more circuits means more RCBOs, more labour, and more testing time. It’s the honest way to price it.
£450 + VAT
Up to 6 circuits
+ £50 + VAT per circuit above 6
8 circuits
£550+VAT
10 circuits
£650+VAT
12 circuits
£750+VAT
What’s included: Hager consumer unit with integrated Type 2 surge protection · Individual RCBO on every circuit · Full testing and inspection · Electrical Installation Certificate · NICEIC Part P Building Control notification · Circuit labelling and handover walkthrough
Important caveat: These are guide prices based on a straightforward installation with wiring in reasonable condition. If circuits need modification before the new unit will work safely, that’s estimated and agreed separately before any additional work begins.
What does a consumer unit actually do?
Your consumer unit — what most people call the fuse box — is the box that distributes electricity to every circuit in your home. Lights, sockets, cooker, shower, boiler — they all run through it.
Rewireable fuses (the great-grandparent). A piece of actual fuse wire that melts when too much current flows. It only protects against overload — it won’t save you from an electric shock.
MCBs — miniature circuit breakers (the grandparent). Switches that trip automatically and can be reset. But they still only protect against overload.
RCDs — residual current devices (the new parent). Detects tiny imbalances in current. Cuts the power in milliseconds. If your board has MCBs but no RCD protection, you’re missing a critical safety layer.
RCBOs — the current standard. An RCBO combines the overload protection of an MCB with the earth fault detection of an RCD, per circuit. If one circuit trips, only that circuit goes off. This is what I fit as standard.
See my explainer on the difference between a fuse box and a consumer unit if you’re not sure which you have. And if you’d like to understand what happens on the day: Consumer Unit Upgrade — What to Expect on the Day →
What’s included in every upgrade
Professional-grade, widely used across domestic and commercial installations.
Only the affected circuit goes off — not half the house.
The 18th Edition wiring regulations require surge protection on most domestic installations. The Hager units I fit have it built in.
You receive an Electrical Installation Certificate — the legal document proving the work meets BS 7671.
Every circuit is labelled clearly. I walk you through the new board before I leave.
Signs your fuse box needs replacing
Wooden back board — old fuse boxes mounted on wood are a clear sign of age.
Rewireable fuses — if your fuse box has fuses with actual wire in them, they’re outdated.
No RCD protection — look for switches labelled RCD or RCCB. If there aren’t any, your home doesn’t have the safety net that modern regulations require.
Frequent tripping — if circuits are tripping regularly, something is either wrong with the wiring or the board can’t cope with demand.
Burn marks or warmth — discolouration, scorch marks, or the unit feeling warm are warning signs that connections are deteriorating.
Age — if your fuse box is more than 25 years old, it’s likely not meeting current safety standards.
Why the wiring condition matters
A new consumer unit has to work safely with all of your existing circuits. Old wiring sometimes has shortcuts — a common example is a borrowed neutral, where two circuits share the same neutral wire. A modern RCBO sees that shared neutral and trips. If that’s needed, I identify it during the survey and give you a clear separate estimate.
An EICR before the upgrade removes this uncertainty entirely. I can carry out both on the same visit.
What to expect — from estimate to handover
When you get in touch, I’ll ask about your property and how many circuits you have. If you can send a photo of your consumer unit via WhatsApp I can usually give you a confirmed price before visiting. The price is agreed before I start.
On the day, I isolate the supply, remove the old unit, fit the new Hager board, and connect each circuit in turn. Once all circuits are connected, I test each one individually before restoring power to it. The power is off for most of the working day, typically 4 to 6 hours.
Once everything is tested and working, I label every circuit clearly, walk you through the new board, and issue the Electrical Installation Certificate on the day. The Part P Building Control notification goes in the same day.
A good time to future-proof
If you’re replacing your fuse box, it’s worth thinking about what you might need in the next few years. Thinking about an EV charger? A garden office? A kitchen extension? I’ll always ask about your plans and make sure I fit something that’s ready for whatever comes next.
Think your fuse box needs replacing?
I’ll take a look, tell you where you stand, and give you an honest estimate. If it doesn’t need replacing, I’ll tell you that too.