Water Heaters

Under-sink water heaters are compact electric storage heaters fitted at the point of use, supplying hot water to a nearby basin or sink without long pipe runs from a central cylinder. We stock ATC models in three capacities: 5 litre, 10 litre and 14 litre.

They suit staff kitchens, cloakrooms, workshops, salons and extensions far from the main hot water supply. Open a trade account for trade prices, and get next working day delivery anywhere in NI or ROI on stock ordered by 5pm, Monday to Friday.

ATC_W5_U Under Sink Water Heater by Meteor Electrical

W5-U In-Stock

ATC 5 Litre Under Sink Water Heater

£122.26 inc. VAT

ATC_W10_U Under Sink Water Heater by Meteor Electrical

W10-U In-Stock

ATC 10 Litre Under Sink Water Heater

£129.95 inc. VAT

ATC_W15_U Under Sink Water Heater by Meteor Electrical

W15-U In-Stock

ATC 14 Litre Under Sink Water Heater

£172.33 inc. VAT

How to choose an under-sink water heater

Point-of-use water heaters store a small volume of water close to where it is needed, so hot water arrives at the tap quickly and you avoid heating water that sits cooling in long pipe runs. Choosing the right model comes down to capacity, the space available and how the unit will be plumbed and wired.

Picking a capacity

5 litre: hand washing at a single basin, such as a cloakroom or office toilet.
10 litre: a small kitchen sink or a basin with more frequent use.
14 litre: a staff tea point, utility or workshop sink where washing up is common.

If several people use the outlet in quick succession, size up so the heater has time to recover between draws.

Space and plumbing

Measure the cupboard under the sink, allowing room for pipework, valves and access to the thermostat. Check whether the model you choose is vented or unvented and which inlet controls and safety valves the manufacturer requires, as this affects both the parts needed and who may install it. Discharge pipework and fittings must follow the instructions and current building regulations.

Electrical connection

Small water heaters are commonly supplied through a switched fused connection unit, found in our wiring accessories, positioned so the heater can be isolated for maintenance. Check the rating plate for the load, use suitable flexible cable for the final connection, and follow current wiring regulations. For other point-of-use and space heating options, browse our full electric heating range.

Trade supply from Cookstown

Meteor Electrical has served electricians and contractors for over 40 years. Order in-stock water heaters before 5pm Monday to Friday for next working day delivery in Northern Ireland and the Republic, with free delivery over £30 / €35 ex VAT, or call 028 8675 1515 for advice.

FAQ's Ask Your Own Question

What is a water heater?: Water heats is the solution to hot water. It is great for instant hot water. It can installed in various householders. It is safe and reliable. We have various water heaters available to suit your requirements. We sell ATC’s under sink water heaters.
How do under sink water heater work?: Under sink water heaters are designed to deliver hot water instantly from your faucet. They are commonly fitted under a sink in kitchens or in bathrooms. They are also installed in Canteens, Offices, Apartments and Workshops. The filter is attached to the cold water supply and it ensures the water is fresh. It then separates the water into two separate elements – one for cold water and the other for hot water. The process is quick and delivers hot water fresh and instantly.
What sizes are available for water heaters?: At Meteor Electrical, we have options of different sizes to suit your requirements. The sizes available are:

5 Litre Under Sink Water Heater

10 Litre Under Sink Water Heater

14 Litre Under Sink Water Heater
Are water heaters good?: Water heaters are considered more energy efficient because it fitted with polyurethane foam insulation. It reduces energy consumption. It also have a thermostat control which controls your water heating and ensures energy efficiency. It is more cost-effective than installing a traditional vented system.

It is tough and durable as it has unique dry porcelain enamel tank lining. This protects the water heater against corrosion resistance. It is also designed with premium protected magnesium anode which protects the water heater from aggressive water action.
How do I choose a water heater?: You should take into consideration the size of the water heater, the demand of water and the size of voltage. We have 5 litre, 10 litre and 14 litre under sink heaters. All water heaters are 220-240V.
Can I install the water heater myself?: No, it is advised an experienced plumber and electrician installs the water heater. The reason is to ensure the water heater is installed safely and securely. Hiring a professional will decrease the hazards and issues with the under sink water heater.
Are water heaters safe?: Yes, under sink water heaters are safe! Under sink water heaters have safety features to enhance the safety. The under sink water heater has a thermostat feature and limiting device which is easy to use and enables you to adjust the temperature of your heating system. This helps protect the water heater from overheating and causing potential hazards
Does the under sink water heaters come with a bracket?: Yes, all ATC’s under sink water heaters are provided with a wall bracket. The wall bracket is used to easily mount the under sink to the wall.
What is the heat up time of the water heaters?: It takes very little time to heat up a water heater. It takes up to 32 minutes to heat up the water heaters.
How many numbers of basins are required: 5 litres: 1 – 2

10 litres: 2 – 3

15 litres: 3 – 4
Does an under-sink water heater need a fused spur?: Typically, yes. Most small point-of-use heaters are connected through a switched fused connection unit with a fuse rated for the appliance, giving a local means of isolation. The exact rating and connection method depend on the model's power, so check the rating plate and manufacturer's instructions and follow current wiring regulations.
Can an under-sink water heater supply a shower?: No, under-sink water heaters are designed for basins and sinks, not showers. Their 5 to 14 litre storage would run out within a minute or two at shower flow rates. For a shower, an electric instantaneous shower or a properly sized cylinder is the appropriate solution.
Is a point-of-use water heater cheaper than running hot water from a cylinder?: For remote or occasional-use sinks it often is. A point-of-use heater only stores a few litres right next to the tap, so you avoid heating a large cylinder and wasting water and energy while hot water travels along long pipe runs. Actual savings depend on usage, insulation and your electricity tariff.