Consumer unit replacement

Replacing the consumer unit, still widely called the fuse box, with a board carrying RCD or RCBO protection for each circuit. Electricians carry out Consumer unit replacement nationally, with 522 businesses offering the work. The businesses are concentrated in London, with 279, followed by Birmingham with 22, Bristol with 19, Sheffield with 15 and Eastleigh with 14. Ratings run from 2.8 to 5.0, while the median rating is 5.0 across 415 rated businesses. Published prices have national medians of £180 to £700 for 2 variants across 12 UK towns, researched August 2026. Consumer unit replacement cost guide

Why people have it done

A modern board carries the additions an older fuse box had no way to take.

522

Electricians listed

443

Claimed profiles

Areas covered

£350–£800

Typical UK price

What needs fixing?

Tell us what's wrong. We'll tell you the price, then find a local electrician to do the job.

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Electricians who do consumer unit replacements

Dang Electrical Services Ltd

Kidbrooke Park, London

Electrician, NICEIC5.01 review

Gray's Services LTD

Manor Park, Manor Park London

Electrician, NICEIC5.027 reviews

G & D Sparks Ltd

Bowes, London

Electrician, NAPIT4.36 reviews

Pulse Electrical London Ltd

Finchley Church End, London

Electrician, NICEIC4.9159 reviews

24emergency Electrician Ltd

Highfield, Enfield

Electrician, NAPIT4.3150 reviews

Rudi Electrics

Highfield, Edmonton

Electrician, NICEIC5.074 reviews

Selkent Electrical Ltd

Eltham Page, London

Electrician, NICEIC4.951 reviews

DTC Electrics

Hither Green, London

Electrician, NICEIC5.01 review

Delta Electrical and Building Services Ltd

Catford South, London

Electrician, NICEIC5.018 reviews

BM Sparks

Downham, Bromley

Electrician, NAPIT5.0181 reviews

EES Electrical Engineering Solution Ltd

Downham, Kent

Electrician, NICEIC5.063 reviews

ElectroBolt Services Limited

Mottingham, London

Electrician, NICEIC

LONDON ELECTRICS LTD

Clayhall, Ilford

Electrician, NAPIT5.0290 reviews

London Property Certificates

Thamesmead Moorings, London

Electrician, NICEIC4.938 reviews

RBH Mechanical & Electrical Limited

Longbridge, Barking

Electrician, NICEIC5.060 reviews

Electrical Specialists

Bromley, Beckenham

Electrician, NICEIC5.03 reviews

Krishna Trading Corporation

Eastbury, Dagenham

Electrician, NAPIT5.08 reviews

London Live Electrical Ltd

Greenwich, New Eltham

Electrician, NICEIC5.083 reviews

ADA Electrical Ltd

Bexley, Sidcup

Electrician, NICEIC5.04 reviews

Electronika Ltd

Bexley, Sidcup

Electrician, NAPIT4.843 reviews

Worth knowing

The work is also called fuse box replacement, fuse board replacement, consumer unit upgrade and fuse box upgrade.
Businesses also offer rewires, EICR, fault finding, EV chargers, lighting, partial rewire, socket installation, emergency callouts and 29 other services, with the supplied counts for each service.
The five supplied local price ranges are £85 to £720 in Birmingham, £145 to £560 in Croydon, £155 to £800 in Bristol, £150 to £800 in Ealing and £85 to £1,050 in Leeds.
The work resolves problems including Burning Smell From The Fuse Box, Fuse Box Sparking, Old Fuse Box, Failed EICR, Signs Your Fuse Box Needs Upgrading, House Not Up To Electrical Regulations and Fuse Box In The Bathroom.
The businesses have 14427 reviews in total, and the most-reviewed business has 725 reviews.
There are 257 businesses with NICEIC, 131 with NAPIT, 52 with Part P and 2 with REFCOM.

Common problems

Burning Smell From The Fuse BoxYour consumer unit or fuse box smells of burning plastic or hot electrics. Treat it as an electrical fire risk: turn off the main switch if safe, evacuate if there is smoke, and call an emergency electrician.Fuse Box SparkingYour fuse box (consumer unit) is sparking: flashes, arcing, or crackling from the board in the hall cupboard or under the stairs. In UK homes that is an extreme electrical emergency: the unit carries the full mains load, and arcing inside it can start a fire. Do not open the cover or touch sparking parts. If the main switch is safely reachable and the unit is not on fire, turn it off. If there is smoke, flames, or any doubt, evacuate and call 999. Then book an emergency electrician. The Distribution Network Operator (DNO) may need to pull the main fuse before work can start.Old Fuse Box: Do I Need To Upgrade?Your fuse box is old and you are wondering whether it needs replacing with a modern consumer unit. Rewirable fuses, no RCD test button, or a wooden back board are clear upgrade signals.Failed EICR: What Happens Next?Your Electrical Installation Condition Report has come back with unsatisfactory results.Signs Your Fuse Box Needs UpgradingYour fuse box is showing signs that it is outdated and no longer providing adequate protection.House Not Up To Electrical RegulationsYour home's electrics do not meet current electrical regulations and standards.

Questions people ask

Which businesses carry out Consumer unit replacement?

All 522 businesses are electricians. Of these, 309 are registered as installers and 153 are registered as inspectors.

Where are these businesses concentrated?

London has 279 businesses, while the supplied London borough counts are 26 in Bromley, 22 in Croydon, 18 in Enfield, 14 in Barnet and 13 in Brent.

How long have the businesses been trading?

There are 139 active companies at Companies House, incorporated between 1984 and 2025, with a median year of 2018. The businesses have a median rating of 5.0 across 415 rated businesses.

What online presence do these businesses have?

520 of 522 businesses have their own website, and 3 of 522 manage their own Tradehand profile.