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Steve and Daniel were quick and efficient came out at short notice found and fixed the fault within the hour Definitely recommend Will be using them again Debbie and lee

Debbie

Job booked in quickly and carried out professionally for a fair price. Would recommend.

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Quick response to messages and good communication. The job didn’t quite go to plan but Curtis has the patience of a saint! Coming back soon to do another job. Top guy!! Would definitely recommend!

Jeanette

Looking to install or replace an immersion heater? Rated People connects you with trusted professionals skilled in installing and maintaining hot water immersion heaters and electric hot water tanks. Whether you’re upgrading your system or need help with repairs, find experienced local experts to handle the job. Post your job for free and receive up to three quotes today.

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 Immersion heater experts

What is an immersion heater?

An immersion heater is an electric heating element placed inside a hot water tank to heat water directly. It works independently of your central heating system, making it a versatile option for heating water. Immersion heaters can act as the primary source of hot water or serve as a backup to a boiler. They are particularly useful in homes without gas connections or as a supplementary water heating solution.

Advantages and disadvantages of an immersion heater

Advantages:

  • Independent Operation: Immersion heaters don’t rely on a central heating system, providing hot water even if your boiler fails.
  • Energy Source Flexibility: Suitable for homes without gas connections or for using renewable electricity sources.
  • Backup Heating: Many households use immersion heaters as a backup option for their main hot water system.

Disadvantages:

  • Higher Running Costs: Heating water with electricity is often more expensive than gas-powered systems.
  • Time-Consuming: Heating a full tank of water can take longer than instant water heaters.
  • Manual Operation: Unless connected to a timer, immersion heaters must be turned on and off manually to avoid wasting energy.

Immersion heater cost

The cost of installing or replacing an immersion heater depends on the type of heater and whether a new hot water tank is required:

  • Immersion Heater Replacement: Replacing an existing immersion heater typically costs between £150 and £300, including parts and labor.
  • Hot Water Tank Installation: Installing a new electric hot water tank with an immersion heater can cost £500 to £1,000, depending on the tank size and complexity of the installation.
  • Running Costs: Operating a hot water immersion heater costs around £0.20 to £0.35 per kilowatt-hour, depending on electricity rates. Using a timer to heat water during off-peak hours can help reduce costs.

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Other immersion heater and hot water tank FAQs

Can I change an immersion heater myself?

While it’s possible for someone with plumbing knowledge, it’s recommended to hire a professional to ensure safe installation and compliance with regulations.

How long does it take to heat water with an immersion heater?

Heating a full tank typically takes 1 to 2 hours, depending on the tank size and the heater’s wattage.

Do immersion heaters work with solar panels?

Yes, immersion heaters can be connected to solar PV systems to use excess electricity for water heating, making them more energy-efficient.

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Rated People helps immersion heater specialists connect with homeowners looking for expert installation and maintenance services. Whether you install hot water tanks, replace immersion heaters, or offer repairs, sign up today to receive high-quality leads in your area.

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Owen Gerrard avatar

Owen Gerrard

Water Tanks and Immersion Heater

My company name is Owen Gerrard, i am a small company based in hemel hempstead that can take on most jobs from small to big and have them done to very happy and professional standard. I cover ground works, plumbing and heating, tiling, roof works and guttering, decorating, block paving, garden work and more.

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Reviewed by Leanne on 14/10/2024
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Elite Installations

Water Tanks and Immersion Heater

Elite Installations (South Yorkshire) Limited is a Sheffield-based company founded by Grant and Danny, who bring over 30 years of combined experience in the trade. Specializing in bespoke home improvement projects, we are dedicated to delivering exceptional customer satisfaction. From initial design to final installation, we ensure a smooth, stress-free experience tailored to each client’s needs. As a Which? Trusted Trader, we uphold the highest standards of quality, professionalism, and reliability. Our goal is to transform your vision into reality with outstanding craftsmanship and attention to detail.

Fully qualified plumbing and heating engineer with over 20 years experience . I am honest , quick , reliable and efficient . All work comes with 12 months guarantee. I am recommended on my builder , Facebook Google and also a proud member of trustatrader.

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Reviewed by Ryan on 31/8/2019

I would highly recommend Greg to anyone who needs plumbing work done. He made a great job of supplying and fitting new radiators in my house, as well as taking the old ones away - all at a very reasonable price. I will definitely use Greg again if and when required.

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Lewis Willoughby

Water Tanks and Immersion Heater

This is the last Gas, Heating and Plumbing company that you will ever acquire. I, Lewis Willoughby personally undertake all site visits and complete projects to the highest possible standard, always putting my clients first.

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Reviewed by Qais on 21/4/2026

Lewis was very professional and efficient. Couldn’t wish for better service all around. Happy to use him for any future jobs and would highly recommend him to any body looking for a 5 star service.

Sole Trader in 2008, now become Limited Company!(summer 2016). Starting as a Horticulturalist, now we are undertaking Landscaping, garden contracts and al aspects of building works. Any aspect of your Property or Garden we can undertake! FULLY INSURED and carried out by experts there is no job big or small we cannot do. (Bigger works and at your request we can amend our insurance details to suit your project requirements as well as reassuring you!) We have licensed and registered utility services (New to 2018!) We can't wait to do Great things together....

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Reviewed by Dragana on 25/6/2012

I am very happy with all the work that has been done so far. I have entered contract for regular maintenance with the company. Mr Scot is very professional and courteous and one gets more then one pays for.

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Daniel Flux

Water Tanks and Immersion Heater

Hampshire based friendly plumber, competitive prices and always here to help! Come check out my website for further information on Aquaflux services

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Reviewed by Matt on 10/5/2026

Fully qualified Plumbers & Tilers with over 10 years experience. We are always looking to provide a professional service. What we cover All general plumbing Tap installs Heating/Radiators 24/7 emergency call outs Drains and gutters Boiler installs Tiling Full Bathroom Refurbishment

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Reviewed by Gillian on 11/7/2026

We are specialist heating engineers that can design, install and maintain all types of heating systems. We are both Gas Safe and OFTEC registered for gas, oil, solid fuel and renewable technologies for domestic and commercial environments.

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Reviewed by lydea on 23/9/2019

Jamie at Baltic Heating was a brilliant find. He has since come back to work on our full house renovations after great initial work with our plumbing and heating. Very reliable and exceptionally high quality of work. Would 100% recommend.

we are highly skilled and motivated, and take pride in all work that asw plumbing limited undertake all of our stuff are fully qualified and ensure they are giving our clients a first class services . we are sure that you will not be disappointed with our services.

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Reviewed by Olivia on 18/4/2023

Boualem was brilliant - quick to respond to our post, great communication and came to do the job just a few days later. Arrived promptly, carried out the work to a high standard in just a few hours and is really friendly. Wouldn't hesitate to recommend and will definitely book him again in future.

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Plumbing 365

Water Tanks and Immersion Heater

Hello there! We are a local plumbing business called Plumbing 365 and we specialise in bathroom and kitchen installations and maintenance. We also deal with other aspects of plumbing from heating to appliance installations as well as general plumbing works.

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Reviewed by Cameron on 7/5/2026

NICUABRU SERVICES LTD is a company formed over 7 years ago, specialized in flats, houses renovation and house extensions. Our aim is to provide good quality services at a reasonable price and customer satisfaction is crucia

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Reviewed by TONY on 3/12/2024

Fantastic work, above and beyond what we asked them to do. Very happy with the finished job, done quickly too. Also great advice on other aspects of the refurb. Would definitely want to use the guys again. Thanks Nicu and Daro.

I specialise in providing a wide range of heating, gas and plumbing services to domestic customers throughout Essex, Hertfordshire and London. My aim is to provide all of my customers with a professional, honest and reliable service that is excellent value for money. I am a highly skilled and experienced Gas Safe engineer with plumbing qualifications and experience, giving you complete peace of mind that your gas and plumbing works are in safe hands. I'm

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Reviewed by Jon on 11/7/2023

A pleasure to deal with. It was a small job but communication was great, turned up exactly when he said and cleared up fully after. Highly recommended

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London Gas

Water Tanks and Immersion Heater

London Gas is a gas central heating and plumbing company that has been established for over 30 years. We cover all areas of North, West, East London and Hertfordshire Our commitment is to help you every step of the way to ensure you get the right heating for your home. London Gas is a family run heating and plumbing company with many years experience. We have worked hard to build a reputation for quality that leads to many of our customers recommending us to family and friends. We take pride in delivering the highest standard of workmanship. Whether you have an emergency, need central heating, a new boiler installation, repair or servicing and you want to get a safe professional every time choose London Gas. We guarantee any work completed by London Gas for 12 months. London Gas are Gas Safe registered plus Valliant Approved registered installers, this means you will get extended manufacturer's warranty from a standard 2 years up to a maximum of 10 years.

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Reviewed by venetia on 11/1/2026

Charlie responded and came immediately. Installed a new shower pump - also new shower and taps and redid some pipe work. Great job and a really nice guy. Thanks Charlie!

LRB Plumbing and Heating have been operation out of Perth for 15yrs now. Small independent run business that has worked from word of mouth for so many years. We work on a platform of pay on completion of any works as it’s our satisfaction promise for any work carried out. Please feel free to look us up on Facebook for before and after pictures of our work. No job is too big or too small and we pride ourselves on customer satisfaction for every job.

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Reviewed by Ian on 1/8/2026

Very pleasant from start to finish. Efficient and thorough. Excellent job. Would recommend to anyone

Razvan Preda avatar

Razvan Preda

Water Tanks and Immersion Heater

We are a team of qualified plumbers providing high standards work, industrial and domestic plumbing. We are looking for jobs in Luton area and surrounding. Get in touch to tell me about your home improvement plans I'd be very happy to discuss how i could help.Razvan

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Reviewed by Jim on 23/1/2023

Lovely chap Great work Very reasonable price

Northstone Building Services is a local, reliable building and maintenance company delivering high-quality workmanship across domestic and commercial projects. We specialise in general building, repairs, refurbishments and ongoing maintenance, taking pride in doing things properly, communicating clearly, and leaving every site safe, tidy and finished to a high standard. No shortcuts, no excuses. Whether it’s a small repair or a larger project, we approach every job with the same attention to detail and professionalism. We’re trusted by homeowners, landlords and local businesses who value honest advice, fair pricing and work done right first time..

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Reviewed by Loubna on 4/5/2026

Amazing service! Thank you for being so prompt and friendly. Issue was fixed

Optimus Heating & Plumbing offer heating and plumbing services in Surrey, Sussex, Hampshire, and Kent. We specialise in heating system design, installation, servicing and repair and are experts in low carbon heating systems such as air source heat pumps. No job is too big or small. Our vision is to become your go to plumber and heating engineer.

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Reviewed by Chris on 11/5/2023

RMT DESIGN AND BUILD LTD

The best in quality ,timing and prices.

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Ziyad Construction

Water Tanks and Immersion Heater

Ziyad Construction with over 15 years of experience in the Construction industry, We carry out all aspects of Domestic/Commercial building works to the highest standards. Services include plumbing, carpentry, brickwork, loft conversions, extensions, house renovations, painting/decorating, plastering and all other general building works.

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Reviewed by Roger on 5/11/2024

Pump installation for a lack luster shower. Sorted well. Now have a powerful shower. Thankyou.

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