Fuse Box Replacements From £499

£499 4 Way RCD Outhouse Consumer Unit
£650 6 Way RCD Consumer Unit
£750 8 Way RCD Consumer Unit
£850 10 Way RCD Consumer Unit
£950 12 Way RCD Consumer Unit
POA 3 Phase Commercial Unit
Fuse Box Replacement image

Thinking about replacing your old fuse box with a new consumer unit? A fuse box upgrade is a vital part of ensuring the safety and efficiency of your electrical system. We have been upgrading old fuse boxes in domestic and commercial properties for over 12 years. With a wealth of experience, our electricians will provide a reliable service to make sure that your home or business remains safe and up to date with current electrical standards.

Our competitively priced consumer unit replacements ensure that your home is safe and your fuse box is up to date.

Your fuse box or consumer unit is responsible for controlling your power supply to your home or business, and should provide protections against any electrical faults. Short circuits and overloads.

Our fuse boxes will provide you with the best protection and safety possible for your family, tenants or your business. We will upgrade your consumer unit to a current regulation box, designed to have all of the appropriate safety devices. Our installations come with a one year manufacturers warranty and a five year certification included in the price.


ExcellentGoogle star 1Google star 2Google star 3Google star 4Google star 54.8796 reviews
4.8Google star 1Google star 2Google star 3Google star 4Google star 5
Excellent796 reviews
Posted on Google Google
Wendy Norman profile picture
Wendy Norman
26 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Excellent personal service! Elle was extremely helpful, knowledgeable, and went above and beyond to make sure everything was handled seamlessly. It is so rare to find this level of genuine care and attention to detail these days. I couldn't be happier with the experience—I will definitely be using this company again and cannot recommend them highly enough!
Posted on Google Google
maggiedayable profile picture
maggiedayable
25 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
easy to talk to, quick telephone response, keep in touch through the whole process even with any hitches, EXCELLENT, professional
Posted on Google Google
Paris Adamopoulos profile picture
Paris Adamopoulos
21 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Punctual, professional, easy to book, great prices, and very polite. I have been using efficient home energy two years and I now use them for both my flats for all services.
Posted on Google Google
john SEARLE profile picture
john SEARLE
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
On time efficient and pleasant personality- will use them again.
Posted on Google Google
Almara Abgarian profile picture
Almara Abgarian
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Efficient, friendly service. Have used them several times and pricing isn’t bad either.
Posted on Google Google
Suely Sousa profile picture
Suely Sousa
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Amazing job. Super efficient and kind service 🙌🏼👏🏼👍
Posted on Google Google
Rachel Hobbs profile picture
Rachel Hobbs
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Had a EPC assessment undertaken by Efficient Home Energy. It was easy to book and the assessor arrived on time. He undertook the work quickly and I received the report later the same day. I’m happy to recommend their service.
Posted on Google Google
Jakub Kamecki profile picture
Jakub Kamecki
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
All good. Happy with the services timely arrival and prompt execution.
Posted on Google Google
George Charalambides profile picture
George Charalambides
13 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great company to do business with and very efficient. I found their number on the internet and after informing them of the units that we had they came back with a very competitive quote. We had been using another company but the owner decided to move to Bristol so had to find someone else. Very lucky that the search engine found EHF and Ellie who I spoke to sent the quote virtually within 1 hour of conversation. The technician who was Alexander came as promised between 8.00 am and 11.00 am and carried out a full check and clean on the 3 units and sent us the reading for all within 2 hours. No problems and all filters etc cleaned and batteries check in remotes etc. We will certainly be using EHL again. Thank you so much for a Efficient service ! Will recommend them to our friends that have air conditioning in their homes.
Posted on Google Google
Church LLP profile picture
Church LLP
13 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We always use these guys for our portfolio. They’re friendly, reliable and efficient and make our job so much easier. The charges are also very reasonable. Thanks EHE 😊

Why Should You Replace Your Old Fuse Box?

There are a ton of properties across London that had their fuse boxes installed decades ago, during a time when households used far less electrical devices, so these fuse boxes are now outdated and can’t handle the electrical strain of today’s modern living standards.

Old systems with outdated wiring can be a potential hazard and can cause serious electrical damage, so it’s always a good idea to keep your fuse boxes checked and up to date.

Updating your old systems give you:

  • A system that will instantly cut power in the case of an electrical shock or fault.
  • Provide comprehensive circuit protection for safety.
  • Protection again power surges and lightning strikes that could cause damage to your appliances.

Updating your old fuse boxes doesn’t just ensure safety, but also keeps you in line with the legal standards for all electrical installations in the UK.

What Happens During Your Fuse Box Replacement?

When you choose us for the job, we’ll make sure everything is safe, tidy and compliant:

  • Initial safety check – we will first check your current system to identify and issues before we start working.
  • Isolating power – we’ll make sure your power supply is turned off before installing the new system.
  • We’ll remove the old fuse box – we’ll safely disconnect the old one and remove it.
  • Installing the new unit – we’ll go ahead and install the new fuse box with RCD, RCBO and SPD protection.
  • Testing the circuit – all installations will then be tested.
  • Certification – when we’ve finished installing and testing, we will issue a full Electrical Installation Certificate for you to keep for your records.

Once we’re done, we’ll tidy up and leave you with a safe and compliant system with everything functioning properly.


What Are the Benefits of Upgrading Your Fuse Box?

Updating an old fuse box is an investment in your property’s future and safety, as it can keep all your appliances safe from damage, as well as being a legal formality in some cases.

A modern unit can provide:

  • Improved electrical safety with the latest technology for circuit protection.
  • A reduced risk of fault or shock should anything go wrong.
  • Keeping your insurance policies valid in case of any potential damage.
  • A much easier way to identify faults in the future.
  • Peace of mind knowing your premises and electrical appliances are safe and secure.

Future-proofing Your Electrical System

Every five years, it’s a good idea to have your electrical systems inspected with an Electrical Installation Condition Report (EICR), especially if you’re a landlord or property owner.

Regular testing can help keep your circuits safe by testing for potential wear and damages that could affect your appliances. And that’s where we come in.

If your lighting trip frequently, fuses blow without any warning, and there is visible wear and tear, then we recommend you call us in. Our qualified electricians can help you understand what the issue is and walk you through your options. We give free, no obligation estimates, usually on the same day as inspection.

Understanding Your Electrical Load

Many homes have old fuse boxes that were originally designed to carry less electrical power throughout the premises.

With the addition of electrical showers, car chargers, and many smart home features, old fuse boxes are under way more pressure than ever before. When you have a modern consumer unit, the updated system will distribute power across your home more efficiently and safely. Our engineers will always check the load to make sure it isn’t under any strain from your appliances.

What’s the Difference Between a Fuse Box and a Consumer Unit?

The traditional fuse box has now been replaced by a consumer unit which can handle a much heavier flow of electricity. With a traditional fuse box, wires would typically melt away when there was a fault, whereas the consumer unit will use circuit breakers that can be reset with a simple switch.


Why Choose Us for your Fuse Box Replacement?

We are NICEIC registered electricians and have a wealth of experience replacing old fuse boxes. With over 12 years experience and thousands of upgrades under our belt, we can confidently say that we are the professionals you are looking for.

Our insurance policy provides coverage of up to £2 million for any electrical work we carry out. So in the unlikely event of damage, injury or loss resulting from our electrical services you are fully protected. Whether it’s residential or commercial work, our Insurances ensure peace of mind.


Convenience and Reliability

We offer flexible booking times to suit your schedule and ensure minimal disruption to your day. With next day availability and an easy booking system, our team will provide you with a 3 hour timeslot, and you will receive an SMS text notifying you when the engineer is on his way!

Book your gsc

niceic approved contractor

Fully Compliant

Our electrical installations comply with:

BS 7671:2018 (18th Edition Wiring Regulations) – The UK standard for safe electrical installations.


Clear Certification

After the installation, you will receive an EIC (Electrical Installation Certificate) sent to your email, certifying that your fuse box installation is safe.


Over 2000 Customer Reviews

We’re not just a faceless company! Our customers are important to us and we take pride in knowing that we have delivered high quality services across the board. With over 2000 happy customers leaving reviews for us on Google and Trustpilot, we’re confident you will find us efficient, reliable and reasonably priced.


FAQs

How long does it take to install a new consumer unit?

Depending on whether the new unit is a single or 3 phase set up, it can take between 1 to 4 hours to install.

What do i need to prepare before your fuse box replacement?

The electricity might be turned off for a short time while the works are being carried out. The engineer will make sure that the power is turned off only when given permission.

What new safety devices will the new consumer unit have?

All of our new boxes will have RCD protection on all circuits providing shock protection. The units will also have SPD protection to prevent surges of electricity coming into the system from surges or lightning strikes, damaging appliances.

How long is the new unit certified for?

The new unit will be certified for 5 years.

Will I lose power during the installation?

Yes, for a short time, we’ll turn off all power for safety while we carry out the work but this should last no longer than a few hours during the installation. We’ll try to keep disruption to the minimum.

How do I know if my fuse box needs replacing?

You’ll know your fuse box needs replacing if you have issues with frequent tripping, a horrible burning smell and flickering lights. If your fuse box is older than 20 years old, we recommend having it inspected.

Will you take away my old fuse box?

Yes, we’ll remove and dispose of your old fuse box safely and leave your premises clean and secure.

How long does the new certification last for?

We’ll provide you with all the necessary documentation that ensures your new installation will be certified for the next five years.

Do you offer emergency replacements?

Yes! If your fuse box all of a sudden stops working for some reason, we can come out quickly, on the same day in most cases as part of our emergency service to help you get back up and running again.


Thinking About Upgrading?

If you think your consumer unit may need upgrading, or would like us to carry out electrical testing to find out if it needs replacing, just give us a call. Our friendly, qualified experts will be happy to answer any questions you may have.

Contact us today for an estimate or to schedule your fuse box upgrade.

Contact us on: 0203 488 1899


ExcellentGoogle star 1Google star 2Google star 3Google star 4Google star 54.8796 reviews
4.8Google star 1Google star 2Google star 3Google star 4Google star 5
Excellent796 reviews
Posted on Google Google
Wendy Norman profile picture
Wendy Norman
26 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Excellent personal service! Elle was extremely helpful, knowledgeable, and went above and beyond to make sure everything was handled seamlessly. It is so rare to find this level of genuine care and attention to detail these days. I couldn't be happier with the experience—I will definitely be using this company again and cannot recommend them highly enough!
Posted on Google Google
maggiedayable profile picture
maggiedayable
25 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
easy to talk to, quick telephone response, keep in touch through the whole process even with any hitches, EXCELLENT, professional
Posted on Google Google
Paris Adamopoulos profile picture
Paris Adamopoulos
21 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Punctual, professional, easy to book, great prices, and very polite. I have been using efficient home energy two years and I now use them for both my flats for all services.
Posted on Google Google
john SEARLE profile picture
john SEARLE
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
On time efficient and pleasant personality- will use them again.
Posted on Google Google
Almara Abgarian profile picture
Almara Abgarian
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Efficient, friendly service. Have used them several times and pricing isn’t bad either.
Posted on Google Google
Suely Sousa profile picture
Suely Sousa
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Amazing job. Super efficient and kind service 🙌🏼👏🏼👍
Posted on Google Google
Rachel Hobbs profile picture
Rachel Hobbs
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Had a EPC assessment undertaken by Efficient Home Energy. It was easy to book and the assessor arrived on time. He undertook the work quickly and I received the report later the same day. I’m happy to recommend their service.
Posted on Google Google
Jakub Kamecki profile picture
Jakub Kamecki
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
All good. Happy with the services timely arrival and prompt execution.
Posted on Google Google
George Charalambides profile picture
George Charalambides
13 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great company to do business with and very efficient. I found their number on the internet and after informing them of the units that we had they came back with a very competitive quote. We had been using another company but the owner decided to move to Bristol so had to find someone else. Very lucky that the search engine found EHF and Ellie who I spoke to sent the quote virtually within 1 hour of conversation. The technician who was Alexander came as promised between 8.00 am and 11.00 am and carried out a full check and clean on the 3 units and sent us the reading for all within 2 hours. No problems and all filters etc cleaned and batteries check in remotes etc. We will certainly be using EHL again. Thank you so much for a Efficient service ! Will recommend them to our friends that have air conditioning in their homes.
Posted on Google Google
Church LLP profile picture
Church LLP
13 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We always use these guys for our portfolio. They’re friendly, reliable and efficient and make our job so much easier. The charges are also very reasonable. Thanks EHE 😊


Fuse box Replacement Coverage Area

All of London (within the M25)
We provide fuse box upgrades across all London boroughs. If you’re looking for a trusted local electrician in your area, you can find borough-specific information below.