Water Heaters, Cylinders & Boilers

At Heater Shop, we keep in stock a wide range of the latest water heaters, cylinders, and boilers. This includes electric hot water heaters such as vented under sink, unvented under sink, and instant heaters for both under and over the sink. We stock brands such as Gledhill, Stiebel Eltron, Rointe and many more. Whatever your needs, we are sure to be able to provide an option to suit your requirements. Should you need help or further information about our hot water heaters, cylinders, or boilers, give our friendly team a call on 01473 276686 where one of our customer service agents will be waiting to assist.

Our range of products are great for giving instant hot water as well as improving the performance of your shower or bath. Some of our models come with built-in WIFI to control on your smartphone which is an excellent addition to any kitchen or bathroom. More information can be found below on the individual types of products we stock.


Instant water heaters pretty much do what they say on the tin, they provide heated water immediately. They have a compact design which minimises the space it requires and makes them great for using in remote areas. They are energy efficient as they have no standby energy losses and you do not need to have a stored cylinder.

Water Cylinders

Our cylinders make it faster for your bath to fill up or gives you a shower that packs a punch. They offer features such as inbuilt sensors, safety tools and visual menus. They are designed for ease of use in the home.

Electric Boilers

Our modern range makes less noise and offers many more features than older models.

Over Sink

Over sink water heaters provide hot water without the need to install a separate hot water unit. These can provide small amounts of hot water at a time which makes them perfect for small office kitchens, hand wash areas and outbuildings or caravans.

Vented Under Sink

Vented water heaters are a great choice for when the water heating needs to be localised. This product is often employed when the central boiler is far away or if there is not one at all. These can be used for both domestic and commercial installations and installations is simple and straightforward.

Unvented Under Sink

An Unvented water heater is a cost-effective solution for residential or commercial properties as its installation is so flexible. There is no need for a separate cold-water supply, and it produces hot water using the mains pressure and provides a balanced supply to all outlets.

Hand Wash Units

Our small water heaters for hand wash basins are economical as they keep water at a consistent temperature. They are splash-proof and have an Ip rating of IP24. They are also easy to fit and install than many of the stored water heaters. They give hot water on demand and are suitable to supply your water outlet economically with power.

Your guide to installing your product

All our self-install products come with a manual and diagram. Some of our larger products come with a kit which includes a step-by-step guide.

Should I use vented or unvented?

Both have advantages; unvented offers more pressure yet vented can continue to work even when the mains water has been turned off.

Choosing a cylinder size that is fit for purpose

Your choice depends on several factors. These include the size of the space available to you, the strength of the mains pressure and details of your existing heating system. We would recommend you measure your space and speak to one of our friendly operatives on 01473 276686.

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Frequently asked questions

Electric boilers are compact in size and do not take up much space. There is no need for flues, storage tanks or separate hot water storage, making them ideal for small flats and smaller spaces.

Elnur electric boilers do not come with a flex as they are subject to different installation methods other than for example a radiator or panel, whereby the connection must be hard wired by a competent engineer.

The Elnur RFE electric radiators all have child locks on the settings panel to stop little hands from tinkering with your heating. The Elnur Connected range however, do not have a lock available on products in the range.

Product reviews

4.998% Positive (40 reviews)

Ratings based on data collected by third party reviewing platform.


Justin Smith
12 January 2022 18:34

Gledhill Stainless ES Unvented 170 Litre Cylinder - Direct Connection

Quality product, as described

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Quality product. The delivery service was outstanding. Thank you

Fantastic to hear, thank you very much for the really great review.


Krista Webb
20 December 2021 08:33

Stiebel Eltron SHC 10 GB Unvented Small Water Heater 10 Litre

Small and compact yet providing all the instatnt hot water we need for a little office.

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Easy to use website, goods arrived very quickly in perfect condition.

Fantastic to hear, thank you very much for the really great review.


Trusted Customer
14 December 2021 07:46

Stiebel Eltron SN 5 SL GB Small Water Heater 5 Litre

This is the second one, I've had first one lasted 7 years.

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Great price and quick delivery.

Thank you for taking the time to complete a 5 star review. We really appreciate you as a customer.


Trusted Customer
11 December 2021 18:59

Stiebel Eltron SHC 15 GB Eltron Unvented Small Water 15 Litre

Because i am happy with my order.

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Stiebel Eltron Unvented Kit SHC15 Optional Cold Water Control Packs

This is not the same xas in the photo,

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I am really happy with my purchase,very reliable.

We really appreciate you taking the time to share your rating with us. We look forward to seeing you again soon.


Gareth Clarke
6 December 2021 17:29

Gledhill Stainless ES Unvented 120 Litre Cylinder - Direct Connection

Nice compacted cylinder top job

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Very helpful and on time.
I would definitely use again

Thank you so much for taking the time to leave us a 5 star rating - it's much appreciated!


Trusted Customer
3 December 2021 11:06

Stiebel Eltron DEM 6 Set Instantaneous Unvented Water Heater

Good water heater as long as you are prepared for a reduced flow.
Will never burn hands so excellent wherever children are around.

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Very impressed with this company.
Good prices, excellent service, professional website which is very user-friendly.

Thank you so much for this great 5-star review. We really appreciate your business and helping to share the word about Heater Shop.


Harvey Tear
25 October 2021 09:13

Gledhill Replacyl Stainless Steel Vented Cylinder 1200mm x 450mm - Indirect Connection, 162 Litres

Service is very good all round.

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First class service, with no issues.

Thank you so much for taking the time to share your experience with Heater Shop. We take pride in knowing our customers are happy with their ordering experience.


Glyn Martin
20 October 2021 07:08

Gledhill Replacyl Stainless Steel Vented Cylinder 900mm x 450mm - Indirect Connection 117 Litres

Good quality and came with all the fittings

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I gave 5 stars because it was a good price, it came with all the fittings and on time

Fantastic to hear, thank you very much for the really great review.


Karen Hart
19 October 2021 08:58

Stiebel Eltron DHC-E 12 Set - 236448 (Single Phase) Compact Instantaneous Water Heater

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Excellent service

Thanks for a 5 star rating. We appreciate you taking the time to share.


Muhammad Mulakhill
3 September 2021 08:48

Stiebel Eltron DHB-E 18/21/24 - 203866 Set (Three Phase) Touch Instantaneous Water Heater 3i technology

This is the third one I installed. 24kW 3 phases. Wow.

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I asked for next day delivery, they promised, and lived up to it.

Thank you so much for taking the time to leave an excellent rating. We really appreciate your business.