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TRACEFORMEmergency Electricians

Replacement, upgrades and new shower circuits

Electric Shower Installation & Repair Manchester

Like-for-like swaps and higher-kW upgrades, with the cable, protective device and supply checked first, isolation placed where it belongs and every test recorded.

Typical price from£305electric shower, like-for-like replacement · see prices

Send a photo of the rating label on your current shower and the pull switch, plus your postcode. The engineer will tell you whether it looks like a straight swap or a circuit upgrade before booking.

TRACEFORM electrician fixing the cover of a new electric shower in a tiled bathroom
Planned installation · Greater Manchester, Liverpool, London, Cambridge & Peterborough
  • NICEIC registered
  • Qualified & insured

How much does electric shower installation cost?

Electric shower installation costs £305–£495 for a like-for-like replacement on a sound existing circuit, or £555–£1,020 when the shower needs a new circuit. Prices cover the electrical work; your plumber makes the water connection. We check the cable, protection and supply first, then test and certify the circuit.

Manchester, Liverpool, Cambridge & Peterborough prices

Electric shower installation cost

Typical supplied-and-fitted prices. After a survey you get a fixed written quote, and nothing starts until you approve it.

  • NICEIC registered
  • Fixed written quote
  • Electric shower, like-for-like replacementLabour; shower unit supplied separatelyLowest price£305–£495
  • Electric shower on a new circuitShower unit supplied separately£555–£1,020

Electric shower installation and electric shower replacement look simple from the bathroom: take one unit off the wall, put another one on. The real work sits behind the tiles and back at the consumer unit. A shower is one of the largest loads in a home, so the cable, the circuit protection and the supply all have to match its rating. TRACEFORM handles the electrical side, and the water connection is made by a plumber, either yours or one you arrange alongside our visit.

Electric shower installation cost: swap or new circuit

A like-for-like electric shower replacement on a sound existing circuit is typically £305–£495. Moving to a more powerful shower, or fitting one where none existed, usually means a new circuit, typically £555–£1,020. Both prices cover the electrical work; your plumber makes the water connection, and any consumer unit work is quoted separately.

Most enquiries start with a shower that has failed or looks tired. If the new unit has the same kilowatt rating as the old one and the existing circuit was correctly installed, replacement can be straightforward: isolate, disconnect, fit the new unit, reconnect and test. We still check the cable, terminals and protection, because a failed shower sometimes points to a problem in the circuit rather than the appliance.

Moving to a higher rating is a different job. A shower rated at a few more kilowatts draws noticeably more current, and the cable that suited an older unit may now be too small. The protective device in the consumer unit has to match, and the property's incoming supply must have enough capacity for the shower alongside cooking, heating and an EV charger if you have one. In many homes a bigger shower means a new circuit from the consumer unit, which our new circuits service covers.

What we check before quoting an upgrade

We look at the size and route of the existing cable, how it is installed, the rating and type of the protective device, the condition of the consumer unit and the earthing arrangements. We also consider the total demand on the supply. If the board has no spare way or no suitable RCD protection, we explain the options, which may include consumer unit replacement, and price them separately so you can see why each item is needed.

A dedicated circuit with RCD protection

An electric shower must have its own circuit, never a spur from a ring or a shared feed. That circuit needs RCD protection, which disconnects the supply quickly if current leaks to earth through a fault or a person. Older bathrooms sometimes have a shower circuit without an RCD. When we replace the shower we tell you if the protection falls short and what it would take to bring it up to the current standard.

Isolation: the pull cord or wall switch

Every electric shower needs a means of switching it off completely for maintenance. In most homes this is a ceiling pull-cord switch, usually with a neon indicator, fitted in a position that is safe to reach. Alternatively the isolator can be a wall switch outside the bathroom door. The switch has to be rated for the shower's load. A pull switch that buzzes, feels warm, sticks or shows scorching around the cord entry is a warning sign and should be checked.

Bathroom zones in plain terms

The wiring regulations divide a bathroom into zones based on how likely each area is to get wet. The space directly inside the bath or shower tray is the wettest; the area immediately above it is next; a band around the bath or shower follows; and the rest of the room is outside the zones. The closer equipment sits to the water, the stricter the rules about water resistance and what may be installed there. An electric shower is designed for use in the wet area, but switches, sockets and many light fittings are not. We check the position of every accessory affected by the new shower.

Building Regulations and notification

In England, a new circuit is notifiable, and so are additions or alterations to circuits in a room containing a bath or shower. Our NICEIC-registered electricians notify that work through the competent person scheme, so you receive a building-regulations compliance certificate as well as the electrical installation certificate. A straight swap on a suitable existing circuit may not be notifiable, but it is still tested and recorded. Our Part P guide explains notification in more detail.

Who does what: electrician and plumber

We take care of the electrical side: assessment, cable, protection, isolation, connection of the shower's electrical terminals, testing and certification. The water connection is made by a plumber. If you already have a plumber or bathroom fitter, we work alongside them and agree the order of work so tiles are not lifted twice. If you are refitting the whole bathroom, involve us early, because the cable route and switch position are easiest to settle before tiling.

Signs an existing shower needs attention

Stop using the shower and switch it off at the isolator if you notice scorch marks on the unit or switch, a burning smell, crackling, or a pull switch that buzzes or feels hot. Other signs worth a call are lights dimming or flickering when the shower runs, the RCD or breaker tripping as the shower starts, water that runs cold despite the setting, or a unit that cuts out partway through. Our guides on a shower or cooker that trips the electrics and on burning smells explain the safe first steps.

Straight swap or circuit upgrade?

The new shower's rating, compared with what the existing circuit was designed for, usually decides the scope.

  • Circuit checked before you buy

    We assess cable size, protective device and supply capacity so you choose a shower your installation can carry.

  • Dedicated, RCD-protected supply

    The shower runs on its own circuit with RCD protection, upgraded or newly installed where the existing one falls short.

  • Isolation in the right place

    A correctly rated pull-cord switch on the ceiling or a wall switch outside the bathroom, positioned clear of the wet zones.

  • Certified and notified

    Testing, an electrical installation certificate and building-regulations notification where the work requires it.

Straight swap or circuit upgrade?
SituationLikely scopeWhat we confirm
Same rating, sound circuitLike-for-like replacementCable, terminals, protective device and RCD protection.
Higher rating than the old unitOften a new or upgraded circuitCable size, device rating, supply capacity and consumer unit space.
No RCD on the shower circuitProtection upgradeWhether an RCBO, a board change or another option is appropriate.
New shower where none existedNew circuit and isolatorCable route, switch position, zones and notification.
Scorching or tripping on the old unitFault investigation firstCause of the damage before any new shower is connected.

Our reading: Share the old and new ratings before you buy. The engineer can then tell you whether the existing circuit is likely to be reused or replaced.

Sources: Bathroom electrical safety (Electrical Safety First)Approved Document P: electrical safety in dwellings (GOV.UK)

Key facts before you plan

  1. Electrical Safety First says an electric shower must be installed by a registered competent electrician and be supplied on its own circuit.

    Bathroom electrical safety · Electrical Safety First
  2. All circuits in or passing through a bathroom or shower room are now required to be protected by an RCD.

    Bathroom electrical safety · Electrical Safety First
  3. Approved Document P sets out when domestic electrical work in England must be notified, including new circuits and work in rooms containing a bath or shower.

    Approved Document P: electrical safety in dwellings · GOV.UK
  4. Notifiable work must be reported to building control or done by a registered electrician, who issues an installation certificate and a compliance certificate.

    England electrical building regulations · Electrical Safety First

Safety and paperwork checklist

  • Switch the shower off at its isolator if you see scorching, smell burning or the pull switch feels hot.
  • Do not reset a breaker that trips again straight away; leave it off and call an electrician.
  • Check the old and new kW ratings before buying a replacement shower.
  • Never remove the shower cover or open the consumer unit to take photos.
  • Keep the electrical installation certificate and any compliance certificate with your house documents.
  • If you see smoke or flames, get out and call 999.

How a planned project runs

  1. Send the shower details

    Photograph the rating label on the current shower, the pull switch and the outside of your consumer unit without opening it. Tell us the rating of the shower you want and your postcode.

  2. Assess the circuit

    The engineer checks cable size and route, the protective device, RCD protection, earthing and supply capacity, then confirms whether the job is a straight swap or needs circuit work.

  3. Agree scope and coordinate the plumbing

    You receive a clear scope covering the shower connection, any new cable, isolator or board work. We agree timing with your plumber, who makes the water connection.

  4. Install and connect

    We isolate safely, remove the old electrical connection, install or upgrade the circuit and isolator as agreed and connect the new shower's electrical supply.

  5. Test, certify and hand over

    The circuit is tested in line with BS 7671, the shower is run through its settings and you receive the certificate plus any building-regulations paperwork.

Electrician checking the rating plate inside a new electric shower unit

Why homeowners book TRACEFORM for planned work

  • Registered and qualified

    NICEIC-registered engineers with 18th Edition and inspection and testing qualifications carry out and certify the work.

  • Upgrades priced clearly

    Shower connection, new cable, isolator and any board work are listed separately so you can see what each part covers.

  • Works around your plumber

    We agree the order of work with your plumber or bathroom fitter so the room is out of use for as short a time as possible.

Plan your project (optional)

Interactive planner · nothing is sent

Shower circuit pre-check

Use these questions to prepare for the conversation with our engineer. The result is a list of points to discuss, not an assessment of your wiring.

Your shower

Read the label on the unit or the product listing. Do not remove the cover.

Warning signs

Likely discussion points

  • What do you need: Not sure yet
  • Old and new kW ratings, if known: Not entered
  • The shower circuit is RCD protected: Not sure
  • Scorch marks, burning smell or a hot pull switch: No
  • Trips the electrics or lights flicker when running: No
  • Bathroom refit planned: No

Cable size, protective device, RCD protection, supply capacity, isolator position and notification.

Things to mention when you call

To be confirmed: What do you need; Old and new kW ratings, if known; The shower circuit is RCD protected; Scorch marks, burning smell or a hot pull switch; Trips the electrics or lights flicker when running; Bathroom refit planned.

These prompts help the engineer prioritise. They do not diagnose a fault.

This pre-check cannot confirm that a cable or circuit is suitable. Only on-site inspection and testing can do that. Do not open the consumer unit or the shower to answer it.

Request a callback about a shower

This pre-check cannot confirm that a cable or circuit is suitable. Only on-site inspection and testing can do that. Do not open the consumer unit or the shower to answer it.

Request a callback about a shower

Frequently asked questions

How much does it cost to replace an electric shower?

A like-for-like electric shower replacement is typically £305–£495 when the existing circuit is sound. If you are moving to a higher kW rating or fitting a shower where none existed, a new circuit is typically £555–£1,020. Any consumer unit work is quoted separately, and you see the full price before work starts.

Can I fit a higher kW electric shower on my existing cable?

Sometimes, but often not. A higher rating draws more current, so the cable, the protective device and the supply all need to be checked. If the existing cable was only sized for the old shower, a new circuit is usually needed. Send us both ratings before you buy and we will advise.

Does replacing an electric shower need building control notification?

A new circuit, or an addition or alteration to a circuit in a room with a bath or shower, is notifiable in England. A straight replacement on a suitable existing circuit may not be. Our registered electricians tell you which applies and handle any notification through their scheme.

Where should the isolator for an electric shower be?

Usually on the bathroom ceiling as a pull-cord switch, or on the wall outside the bathroom. It must be rated for the shower's load and positioned so it can be operated safely and is not within reach of someone using the shower.

Do you also connect the water supply?

No. We handle the electrical work and the water connection is made by a plumber. We are happy to work alongside your plumber or bathroom fitter and agree the order of work so the job runs smoothly.

Why do my lights dim when the electric shower is on?

A brief dip can happen when a large load switches on, but noticeable or worsening flicker may point to a loose connection, an undersized cable or a supply problem. Avoid using the shower if you also smell burning or see scorching, and book an inspection.

My pull-cord switch buzzes. Is that dangerous?

It can be. Buzzing, heat or discolouration around a shower pull switch often means a worn contact or loose terminal, which can overheat. Switch the shower off, stop using it and ask an electrician to inspect the switch and circuit.

How long does a shower replacement take?

A like-for-like electrical swap on a sound circuit is usually completed in a single visit. Upgrades that need a new cable route or board work take longer. The engineer confirms an estimate for your job when you call or after the survey.

Request a survey

Tell us the basics. We visit, look at the job and give you a fixed quote there and then.

Planned work enquiry

Tell us about the project

A short brief is enough. Photos help but are optional.

  1. 1 · The problem
  2. 2 · Your details

Step 1 of 2: the problem

What do you need help with?
Photos of the joboptional · up to 5

Photos of the area or the existing setup help us plan. Location data is removed.

  • NICEIC
  • 24/7
  • Clear prices

Your details are only used to respond to your enquiry

Where we plan installations

Greater Manchester coverage

Check your postcode

Enter a full UK postcode to confirm planned-work coverage.

References

  1. Bathroom electrical safetyElectrical Safety FirstChecked 14 October 2026. Electric showers on their own circuit, RCD protection and pull-cord switches.
  2. Approved Document P: electrical safety in dwellingsGOV.UKChecked 14 October 2026. Statutory guidance on when domestic electrical work must be notified.
  3. England electrical building regulationsElectrical Safety FirstChecked 14 October 2026. Notification routes and the certificates a registered electrician provides.
  4. Electrical safety at homeGreater Manchester Fire and Rescue ServiceChecked 14 October 2026. Warning signs of overheating electrics and fire safety advice.
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5.07 Google reviews
Amin Varmaziar

Our electrics kept tripping and we had no idea why. He found the faulty socket and sorted it on the same visit. Really pleased, thanks again 👍

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Eddi Q

Excellent service from start to finish. Professional, reliable, and very knowledgeable. The work was completed to a high standard, with great attention to detail, and everything was explained clearly. Really happy with the result and would definitely recommend their electrical services to anyone looking for a trustworthy and skilled electrician.

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Check the circuit before you choose the shower

Send the rating of your current shower, the one you would like and your postcode. We cover Greater Manchester, Liverpool, London, Cambridge and Peterborough and will confirm whether it is a straight swap or needs circuit work.