Electrical
Consumer Unit Replacement
Replacing an old fuse box with a modern consumer unit.
From £650. You see your price before giving us any personal details.
- No call-out fee
- Qualified professionals
- 12-month workmanship guarantee
- Emergency call-outs
The consumer unit is the box the electricity comes into, and where each circuit is protected. Older installations use rewireable fuses; modern ones use circuit breakers and RCD protection, which disconnects the supply fast enough to prevent a serious shock.
Replacing one means the whole installation has to be tested, because the new unit has to protect circuits that are safe to connect to it.
The price you see is based on what you tell us. If our engineer finds that more work or materials are needed, they will explain the cost and get your agreement before carrying on — nothing is added without you agreeing to it first.
Do you need this?
You might need this if
- An old fuse box with rewireable fuses or a wooden back
- No RCD protection on the installation
- Breakers that trip repeatedly
- An electrical inspection that recommended replacement
- Adding a major circuit, such as an EV charger or a shower
- Buying or letting a property with an old installation
Qualified engineers across London, seven days a week.
On the day
What the work involves
Roughly what to expect. The exact steps vary with the job.
- Step 1:The existing installation is tested first
- Step 2:The supply is isolated and the old unit removed
- Step 3:The new consumer unit is fitted and circuits reconnected
- Step 4:Every circuit is tested and results recorded
- Step 5:A certificate is issued for the work
How it works
How booking works
You see what the job costs before giving us any personal details.
Get My Price-
Step 1: Tell us what you need
Pick your service and answer a few plain-English questions about the job.
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Step 2: See your price
We show you the price before you give us any personal details.
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Step 3: Choose your slot
Pick an arrival window that suits you from our genuine availability.
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Step 4: Pay your deposit
Secure your appointment with a £10 deposit, taken off your final bill.
Questions
Common questions
How long will the power be off?
Usually most of the working day. The engineer will let you know before starting so you can plan around it.
What is an RCD and why does it matter?
A residual current device cuts the supply within milliseconds if it detects current leaking to earth — the situation that causes a fatal shock. Older fuse boxes have no equivalent.
What if a fault is found in my wiring?
It has to be resolved before the new unit can be signed off, because the unit protects those circuits. You will be told what has been found and what it means before anything is done.
Ready to book consumer unit replacement?
Pick a time that suits you. It takes a couple of minutes.