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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.

Antonio

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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Summers Plumbers avatar

Summers Plumbers

Water Tanks and Immersion Heater

Summers Plumbing and Roofing is a family business with myself and my 2 brothers carrying out the work. We are based in and around Glasgow. We are very reliable and carry our work out to a very high standard.

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Reviewed by Richard on 21/10/2025

Summers works very efficiently and is patient during discussions to find the best solution.

Providing professional Plumbing solutions both domestic and commercial. We are now branching out into property maintenance and property clearances.

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Reviewed by Stan on 2/11/2025

Came on time and did a really good job at a reasonable rice I would strongly recommend this company

Hello, my name is Josh. I have over 14 years plumbing and heating experience in both domestic and commercial settings. I undertake all aspects of domestic plumbing work, from a basic tap swap, full bathroom refurbishments, radiator replacements, boiler swaps and full system changes, to name a but a few. I have worked for a large commercial mechanical engineering firm for the last 10 years where I managed teams of plumbers as a working plumbing foreman. I understand that customers want a reliable, friendly and professional plumber, which is exactly what I offer. It is important to me that my customers receive the highest standard of work, no matter how big or small the job is. I look forward to assisting you in any way I can. Please do not hesitate to get in contact for a no obligation discussion. Thank you for viewing my page.

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Reviewed by Lawrence on 30/5/2025

Resonable price, excellent job done, would recommend.

Experienced engineer with over 16 years in the Plumbing and Tiling trades, providing 24 hour call out. 130+ 5* reviews, rated Excellent on RatedPeople.

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Reviewed by Sri on 7/12/2025

Carpentry (Certified Fire Door Installer/competent person) Electrical and general builder

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Reviewed by tarique on 4/9/2025
The Ruby Team avatar

The Ruby Team

Water Tanks and Immersion Heater

At The Ruby Team we value great work and our word. Reliable, trustworthy and punctual tradesmen is what we are. With fantastic quality of work and enthusiasm we really get the job done to a 5* level. With 7 years in the field as a multi-tradesman I’ve accumulated a lot of knowledge in many sectors. No job is too small nor too big for us and we cover all areas in London and Essex. We follow a CLAYGO service which is a protocol we follow to ensure your house is as clean as when we entered it. #Residential. #Commercial. #Landscaping. Terms & Conditions. Any job cancelled by client with less than 48 hours notice will be subject to a flat £65 cancellation fee which is due when cancellation is confirmed. Payments are due on completion and once customer is satisfied with the quality of workmanship. If customer is not satisfied, it will be resolved with snagging or discount.

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Reviewed by Lewis on 24/12/2025

A time served plumber with 20 yrs experince in the trade. Excellent workmanship guaranteed and peace of mind with full insurance. 24hr callout - 7 days a week. All aspects of plumbing from: bathroom refurb, maintenance, installation and all small jobs.

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Reviewed by Jennifer on 5/9/2020

Couldn’t be happier. Came out when another plumber couldn’t do the job. No problems at all in completing the job and wasn’t phased at all. Excellent communication throughout. Turned up on time and was very clean and tidy. Highly recommended and will be using again.

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RHL Plumbing

Water Tanks and Immersion Heater

All plumbing undertaken with no call out charge. Full bathroom installations our specialty

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Reviewed by olayinka on 7/11/2025

Over 20 years in trade, very professional and punctual.

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Reviewed by Samantha on 21/6/2022

Prompt, professional speedy service. I would definitely use again

Electrician at Self employed electrical engineer

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Reviewed by Vicky on 25/8/2024

Came out short notice. Managed to squeeze me in. Due to short notice of getting room plastered 3 days later. Had 4 double plugs put in. In chrome like I wanted. They were professional and cleaned up after themselves. Will definitely use again

T M SERVICES avatar

T M SERVICES

Water Tanks and Immersion Heater

Trading since 2001. T M Services ( Tony ) specialise in all electrical works and is a city and guilds qualified electrician, fully insured and Part P registered. T M Services also undertake all aspects of bathroom and kitchen design and installation, as well as tiling. Along with any other plumbing works you may need doing. To view a selection of works recently finished please visit our Facebook page

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Reviewed by Michelle on 18/11/2025

Welcome to Certified Group Limited, We are a sister company to Certified Gas Heating Ltd. Started of as a dedicated and driven apprentice who started working within the plumbing trade from the age of 15. Established in 2012, We are a fast growing company accommodating your plumbing, heating and gas utilities effectively. Over the years we have started to offer other services which include: Electrical, renewables, drainage, carpentry, roofing, property renovations and kitchen extensions hence the reason for the name change as it fits our image at present. We at Certfied group are known for being professional, organised and enthusiastic at all times. We are approved contractors rated a “5 Star company for quality services” on Which Trusted Trader, Trust Pilot and other platforms. We at Certified group have a fantastic reputation for our hard work, performance, quality and efficiency. We are based in Greenwich SE10 London and cover whole of the capital and surrounding areas. We offer a 24/7 emergency services, Landlord safety certificates, Central heating and boiler installations, Breakdowns, Repairs, Power flush and more.

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Reviewed by Leona on 14/6/2024

Great experience with Aziz and team. They provide lots of advice and a detailed quote before starting any works. The work was quick and efficient and they were super tidy throughout the whole process. All works were completed to a high standard and we are so happy with our newly installed radiators. Thanks again for the amazing effort

John Matyus avatar

John Matyus

Water Tanks and Immersion Heater

A friendly competitive company. Check out my customers testimonials. Please call for a no obligation quote from the smallest plumbing job to complete bathroom refit.

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Reviewed by Angela on 16/6/2022

Did a great job and came very quickly. Very friendly and left no mess.

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JSF PHD

Water Tanks and Immersion Heater

JSF Plumbing Services is a full-service plumbing company that offers a wide range of services to residential, commercial, and industrial clients. We have been in business for over 20 years and are proud to be one of the most trusted and reliable plumbing companies in the industry. Our team of highly trained and experienced plumbers are committed to providing excellent customer service and delivering high-quality workmanship. • Residential Plumbing Services: Our residential plumbing services include everything from fixing leaky faucets to installing new plumbing systems. We also offer emergency services for urgent plumbing issues. • Commercial Plumbing Services: We provide a wide range of commercial plumbing services, including installation, repair, and maintenance of plumbing systems for office buildings, retail stores, restaurants, and more. • Water Heater Services: We offer installation, repair, and maintenance services for all types of water heaters, including tankless water heaters, gas water heaters, and electric water heaters. • Drain Cleaning Services: Our drain cleaning services include unclogging blocked drains, fixing slow drains, drainage jetting and repairing damaged sewer lines. • Leak Detection Services: We use the latest technology to detect leaks in your plumbing system and provide efficient and cost-effective solutions. • Emergency Services: We offer 24/7 emergency plumbing services to address urgent plumbing issues. Why Choose Us: • Experienced and highly trained plumbers • Reliable and efficient service • Competitive pricing • High-quality workmanship • 24/7 emergency services • Excellent customer service • Free estimates

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Reviewed by Nigel on 18/12/2025
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ABS Plumbing

Water Tanks and Immersion Heater

I bring many years of experience to each job that I undertake. I specialise in all aspects of bathroom installation and maintenance. My ratings show the efforts I make to give complete satisfaction at an unbeatable price.

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Reviewed by Kieran on 19/11/2024

Friendly and reliable. Top work we would well recommend we will be using again thank you

We are a well established firm of gas engineers, providing a professional and punctual service at an affordable price, we specialize in service and repair of all gas appliances, and combustion analysis, all plumbing work undertaken.

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Reviewed by Craig on 22/12/2020

Originally I was just looking for a boiler service but I asked if Gordon could change 5 of my radiators at the same time. Nothing was too much trouble. I highly recommend him and his work. Thanks

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S & H Builders

Water Tanks and Immersion Heater

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Reviewed by Matthew on 1/9/2021

Raj was very helpful fixing my sink. He got in touch really quick after posting my ad, he came the next day to have a look and repair it. I had a small problem the next day and Raj came back to fix it straight away. Would recommend Raj

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Cafgas services

Water Tanks and Immersion Heater

Over 20 years heating industry experience Cafgas CIC is first and foremost an experienced and effective team of gas heating engineers. We have over twenty years’ experience in the heating industry installing new boilers and central heating systems, and power flushing older systems. However, unlike most plumbing and heating companies, Cafgas is a Community Interest Company or CIC. A CIC is a social enterprise that uses their profits and assets for social good, and that is exactly what we do at Cafgas CIC. The profits that the business generates goes back into the communities that we work in, helping with food poverty, social isolation and supporting our partner charities.

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Reviewed by Donna on 14/9/2023

Quick to respond. Nice and friendly lads.

Plumber looking to carry out a range of plumbing jobs. Ranging from maintenance and breakdowns to full bathroom refurbs and full system installations

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Reviewed by Chris on 15/1/2025

Dean and Liam attended early Tuesday morning and sorted out the problem which was the motorised valve. They also checked all the wiring and fitted a new wiring control box. Very pleased.

We are a company which provides services for all plumbing, gas and central heating works. Also we have plastering electrical and joinery contacts for further works to be done Pride in our work goes a long way for our customers as we maintain high standards and work ethics. Emergency call out also availabe after hours thank you for your time and custom. Ryan from Venturi gas plumbing and heating.

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Reviewed by Fiona on 10/12/2025

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