Consumer Unit Upgrade in Hereford (2026 Guide): Signs, Costs and What to Expect

Published on 16 October 2026 at 13:16

Consumer Unit Upgrade in Hereford (2026 Guide): Signs, Costs and What to Expect

A consumer unit upgrade in Hereford means replacing your old fuse box with a modern, metal-cased unit that has RCD protection. For a typical home it takes about a day, the power is off for a few hours, and you should receive an electrical installation certificate. Your fuse box needs upgrading if it has rewirable fuses, no RCD protection, damaged or discoloured casing, no spare capacity, or if an EICR has recommended it.

Your consumer unit, which many people still call the fuse box, is the heart of your home's electrical system. Every circuit runs from it, and its job is to cut the power quickly if something goes wrong. If it is old, damaged or missing modern protection, it cannot do that job as well as it should.

A consumer unit upgrade in Hereford is one of the most common jobs we are asked to quote for. Sometimes homeowners ask for it, sometimes an EICR recommends it, and sometimes it is needed before an EV charger, solar system or battery can be fitted. This guide is written by RJH Electrical Services, a Hereford electrician with more than two decades of experience, and it explains what a consumer unit does, how to tell whether yours needs replacing, what affects the price and what happens on the day.

What does a consumer unit do?

Short answer: It splits your incoming electricity supply into separate circuits and switches a circuit off automatically if there is an overload or a fault.

Each circuit, such as lighting, sockets, the cooker or the shower, has its own protective device. Modern units also include residual current devices (RCDs), which detect small leaks of current to earth, the kind that can pass through a person, and disconnect the circuit in a fraction of a second.

That last point matters most. Older fuse boards often have no RCD protection at all, so a fault that would trip a modern unit almost instantly can carry on flowing. Electrical Safety First, the UK electrical safety charity, publishes independent advice for householders on this at electricalsafetyfirst.org.uk.

How do I know if I need a fuse box upgrade in Hereford?

Short answer: Look for rewirable fuses, no test buttons (no RCD), a wooden, cast-iron or cracked casing, frequent tripping, buzzing, a burning smell, no spare ways, or an unsatisfactory EICR.

Not every old unit is dangerous, but these are the most common warning signs that a fuse box upgrade in Hereford should be on your list.

  • Rewirable fuses. Ceramic fuse carriers with fuse wire belong to a much earlier era of electrical design.
  • No RCD protection. If you cannot see any test buttons marked "T" or "Test", the unit probably has no RCDs.
  • A wooden or cast-iron board. These are very old and are worth replacing.
  • Brittle or discoloured plastic. Cracks, scorch marks or a warm smell suggest overheating.
  • Frequent tripping or blown fuses. This may point to overloaded circuits or a fault.
  • Buzzing or humming. This can indicate loose connections.
  • No spare ways. If every slot is used, or extra circuits are crammed into one device, there is no room to add anything.
  • An unsatisfactory EICR. Many reports recommend a new consumer unit. See our guide to EICR in Hereford for how reports work.
  • Plans for an EV charger, solar or battery. These often need extra protected circuits.

If any of these apply, have the unit looked at by a qualified electrician. Do not open the cover yourself, and do not keep resetting a trip that keeps coming back.

Why are older Herefordshire homes more likely to need one?

Short answer: Many homes in Hereford and the surrounding villages are older properties, and older installations are more likely to have outdated fuse boards.

Herefordshire has a lot of Victorian and Edwardian terraces in and around Hereford itself, period cottages and farmhouses in the villages, and converted barns and outbuildings across the countryside. Many of these have been extended or altered over the years, often by different people, so it is common for us to find a modern extension circuit fed from a very old board, or several circuits crammed into one device.

That does not mean every older property has a problem. It does mean that a proper inspection is worth doing, particularly before you buy, sell, extend or add new equipment.

Why does replacing an old consumer unit matter?

Short answer: It improves safety, brings the installation up to the current standard, removes a common concern for insurers and buyers, and makes room for EV chargers, solar and batteries.

1. Safety. Modern units add RCD protection, better labelling and better fault protection. Since 2016, domestic consumer units in the UK have been required to be made of non-combustible material, usually metal, which gives extra protection if a connection fails.

2. Compliance. The wiring regulations, BS 7671 (the IET Wiring Regulations), are updated regularly. Existing installations are not automatically unsafe because standards have moved on, but replacing a unit brings it up to the current standard.

3. Insurance and property sales. Insurers and buyers' surveyors often look closely at old consumer units. A modern, certified unit removes a common concern during a sale.

4. Future-proofing. Heat pumps, EV chargers, solar and battery storage all place new demands on the electrical system. A modern unit gives you the capacity and protection to add them safely.

What is inside a modern consumer unit?

Short answer: A main switch, circuit breakers (MCBs or RCBOs), RCD protection and, in most new installations, surge protection.

  • Main switch. Isolates the whole installation.
  • MCBs (miniature circuit breakers). Protect against overloads and short circuits.
  • RCDs (residual current devices). Protect against earth leakage and shock.
  • RCBOs. A combined breaker and RCD for a single circuit.
  • Surge protection. Protects equipment against voltage spikes. It is commonly required under the current regulations unless a risk assessment shows it is not needed. [Richard to confirm wording against the current edition of BS 7671.]
  • Arc fault detection devices (AFDDs). Detect dangerous arcing in the wiring. They are recommended in certain situations, and we will advise if they are relevant to your property.

Should I choose a dual RCD or an RCBO consumer unit?

Short answer: Dual RCD units are cheaper, but RCBO units isolate faults to a single circuit, so one fault does not take out half the house.

Dual RCD (split-load) units. Circuits are divided into two groups, each protected by an RCD. A fault on one circuit can trip the whole group, which might include lighting and a freezer.

RCBO units. Each circuit has its own combined breaker and RCD. A fault affects only the circuit concerned, so it is easier to find and the rest of the house stays on. RCBO units cost more, and many customers feel the reliability is worth it.

We explain both options and recommend what suits your home and budget.

How much does a consumer unit upgrade cost in Hereford?

Short answer: The new consumer unit cost in Hereford depends on the number of circuits, the type of unit and the condition of the existing wiring. We give a fixed, itemised quote after a few simple questions or photos of your existing unit.

The main factors are:

  • Number of circuits. More circuits mean more devices and more labour.
  • Type of unit. RCBO units cost more than dual RCD units. Surge protection and arc fault devices add to the price.
  • Condition of existing wiring. Defects in the circuits must be corrected before the new unit can be certified.
  • Earthing and bonding. If these are missing or inadequate, they must be brought up to standard.
  • Position of the unit. Moving the unit, or fitting it in a tight space, takes more time and materials.
  • Meter tails and isolator. The cables between your meter and consumer unit may need replacing, and sometimes your network operator or supplier must be involved.
  • Testing and certification. Every new consumer unit should be inspected, tested and certified.
  • Other work. Additional circuits, EV chargers or repairs are separate from the cost of the unit.

To get a quote, call us on 07792 195612 or send photos of your existing unit.

What happens during a consumer unit replacement?

Short answer: We survey and test the existing circuits, isolate the power, fit and connect the new unit, test every circuit, then give you an installation certificate and show you how to use it.

1. Survey or photo check. We look at your existing unit, earthing, meter tails and circuits so we can quote accurately.

2. Pre-work testing. Before anything is disconnected, we test the existing circuits so we know their condition.

3. Power off. We safely isolate the supply and tell you how long the electricity will be off.

4. Remove and replace. The old unit comes out, and each circuit is identified, labelled and connected to the new one. We tidy the cables as we go.

5. Testing and commissioning. We test every circuit, including insulation resistance, earth fault loop impedance and RCD operation, before the power comes back on.

6. Certification and explanation. You receive an electrical installation certificate showing what was done and the test results, and we show you how to test the RCDs.

How long does a consumer unit change take?

Short answer: Most homes take about one day, with the power off for several hours.

Larger properties, difficult access or extra remedial work can take longer. We confirm timings when we quote, and we tell you in advance when the power will be off so you can plan around fridges, freezers, computers and alarms.

Is replacing a consumer unit notifiable work?

Short answer: Yes. In England, replacing a consumer unit is notifiable under Part P of the Building Regulations, so it must be done by a registered competent person or notified to building control.

The government's statutory guidance, Approved Document P: electrical safety, dwellings, explains when notification is required. After the work you should receive an installation certificate and, where applicable, a building regulations compliance certificate. Keep them safe for insurance and for when you sell. [Richard to confirm his registered scheme, for example NICEIC or NAPIT, and add the registration number.] NICEIC also publishes householder guidance on consumer units and fuse boards.

What if my EICR says I need a new consumer unit?

Short answer: That is common. A missing RCD or an unsuitable unit is often listed as a C2 (potentially dangerous) observation, and replacing the unit is the usual fix.

If you are a landlord in England, remedial work after an unsatisfactory report must normally be completed within 28 days, or sooner if the report says so, and you need written confirmation. The government's guidance for landlords is on GOV.UK. To understand how a report works, read our guide to EICR in Hereford.

Should I upgrade before adding an EV charger, solar or a battery?

Short answer: Often yes. These systems need protected circuits and spare capacity, and doing everything in one visit saves time and repeat power cuts.

Tell us your plans before you order equipment. See our guides to EV charger installation in Hereford and solar battery installation in Herefordshire.

Where do we cover?

Short answer: We cover Hereford and surrounding Herefordshire, including these towns and villages. [Richard to confirm the full list and any travel limits.]

  • Hereford city and suburbs, including Tupsley, Holmer, Belmont, Hampton Park and Credenhill
  • Leominster and the north of the county
  • Ledbury and the east of the county
  • Ross-on-Wye and the south of the county
  • Kington and the west of the county, towards the Welsh border
  • Bromyard
  • Hay-on-Wye, Weobley, Madley, Peterchurch, Pontrilas and Fownhope and surrounding villages

We will travel further for the right job, so call and ask.

Recent consumer unit job in Herefordshire

[Richard to add one real job here: town, type of property, what was found (for example "old rewirable fuse board with no RCD protection"), what was done, how long it took, and one or two photos. A short customer comment adds trust if the customer agrees.]

What mistakes should I avoid?

  • Choosing the lowest quote without checking what is included. Certification, testing, surge protection and earthing work should all be written into the quote.
  • Hiring someone who is not registered. Uncertified work can cause problems with insurance and property sales.
  • Ignoring warning signs. Persistent tripping, heat or smells mean call an electrician sooner, not later.
  • DIY consumer unit work. It is dangerous and, in most cases, not legal without notification.
  • Not keeping the paperwork. The certificate is proof the work was done properly.

How do I choose an electrician for a consumer unit upgrade?

Ask these questions when comparing quotes for a consumer unit upgrade in Hereford.

  • Are you registered with a competent person scheme? [Add scheme.]
  • Will I receive an electrical installation certificate?
  • What type of unit will you fit, and what protection will it include?
  • Does the price include testing, earthing checks and any remedial work?
  • How long will the power be off?
  • Do you carry public liability insurance? [Add details.]

See our Qualifications page and examples of past work in our Gallery.

Frequently asked questions

How much does a consumer unit upgrade cost in Hereford? It depends on the number of circuits and the type of unit. We give a fixed quote after a few simple questions.

How long does it take to change a fuse box? Usually one day for a typical home, with the power off for a few hours.

Do I have to replace my old fuse box? Not always. If it is in good condition and safe, it may not need replacing. If it has no RCD protection, shows damage or has failed an EICR, replacement is strongly recommended.

Will I need to leave the house? No. You can stay at home, but you will be without power for part of the day.

Do I need an EICR before a consumer unit upgrade? Not always, but testing before and after the work is part of the process. If you have not had an EICR for many years, now may be a good time to combine the two.

Will you tidy up and remove the old unit? Yes. We take away the old unit and leave the area tidy.

Do you work outside Hereford city? Yes. We cover Herefordshire, including Leominster, Ledbury, Ross-on-Wye, Kington and Bromyard.

Related pages

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Book a consumer unit upgrade in Hereford

RJH Electrical Services offers clear quotations, tidy work, thorough testing and certification. Call or message 07792 195612, or use the contact form, and tell us about your property. We will get back to you promptly.

Last updated: October 2026. Regulations change, so always confirm current requirements.

Sources: Approved Document P (GOV.UK) · Landlord electrical safety guidance (GOV.UK) · NICEIC householder guidance · Electrical Safety First

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