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Undersink water heaters

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Zip Instantaneous Water Heater

Availability: In stock

Delivery Time:   Next Working Day

Warranty:   1 Year

Quick Code:   12218

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Special Price Ex. VAT: £175.00 Inc. VAT: £210.00

Regular Price: £277.81


The ES is designed to provide warm water (38º) for hand wash only in areas where space is limited. 

Heating power controlled electronically for temperature stabilisation

Outlet temperature can be preset inside the unit between 30˚C and 45˚C (factory set at 38˚C),  please note that if you increase the water temperature then the flow rate will be reduced.

Flow adjustment control, preset for a temperature increase of 25k

Stainless steel bare-wire heating system for very quick response

Double pole thermal cut-out protection

Supplied with 700mm of pre-wired cable

Easy to install with improved wall bracket

WRAS approval and CE endorsed

Taps required with this unit are M22 or M24 compatible as they must be able to accept the flow restrictor aerator that is supplied with the unit.

ErP A Rated


Product Code ES3 ES4 ES6
Pressure rating 10 Bar
Element type Bare Wire
Supply voltage 1/N/PE 230V~
Nominal power rating @ 230V 2.8kW 4.4kW 5.5kW
Nominal current @ 230V 12A 19A 24A
Temperature adjustment (installer) 30°C - 45°C
Maximum inlet temperature 70°C
Factory set temperature 38°C
Factory set flow rate 38°C 1.5 litres/min 2.4 litres/min 3.0 litres/min
Maximum temperature increase @ 230V and a flow rate of:
2.0 litres/min 20°C 31°C 39°C
2.5 litres/min 16°C 25°C 31°C
3.0 litres/min 13°C 21°C 26°C
3.5 litres/min 11°C 18°C 22°C
4.0 litres/min 10°C 16°C 20°C
Switch on flow rate 1.2 litres/min 1.5 litres/min 1.5 litres/min
Switch off flow rate 1.0 litres/min 1.3 litres/min 1.3 litres/min
Required specific water resistance @ 15°C >1100 ohm.cm >800 ohm.cm >800 ohm.cm
Capacity 0.2 litres
Filled weight 1.5kg
Water connection 1/2”BSP
Dimensions (H x W x D) 135mm x 186mm x 87mm
Protection class (IEC 529) IP25

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Q. When will I receive my delivery?
A. The majority of items from CGS Stores web sites are delivered Next working day if ordered before 12.00PM. If something is time critical please call or email to check. You can also check in the description some items are delivered direct from the manufacturer or made to order and can take a longer.

Q. What warranty do I get with this item?
A. All products we sell come with at least 1 years warranty. Some can be as long as 10 years please check description.

Q. What size is it?
A. We have a technical tab please click on that it will give you dimensions, weight and more technical information


At CGS Stores our aim is to offer first class service and products at competitive prices.

We check our prices constantly to ensure we are unbeaten, however if you do manage to find it cheaper elsewhere we will price match. Please contact us.

Price Match Terms & Conditions

-       The competitor’s item must be identical (colour, size, output etc.) and offered on same terms

-       The competitor’s item must be in stock at the time of match

-       The price matched is the total including VAT and delivery

-       UK competitor’s only

-       The competitors price must be advertised online and cannot include any discount

-       Excludes items from auction sites such as eBay and Amazon


Here at CGS Stores we offer a 14 day return policy.
You may cancel your order prior to dispatch or within 14 days of delivery. Notification of cancellation must be in writing, you can do this here. You cannot cancel your order via telephone. (This is in accordance with the Distance Selling Regulations 2000).

If you choose to cancel your order you are responsible for the cost of returning the goods back to us, unless we have delivered the goods to you in error. All items must be returned undamaged, in their original packaging and in a re-saleable condition. We ask that the goods are returned within 14 days of your return request. If you fail to return the goods, we reserve the right to charge for the cost of collection and you are legally obliged to make them freely available for collection. Returned goods may also incur a re-stocking fee depending on the item.

Once we receive the goods back they will be inspected, if they are in an acceptable condition we will process your refund. Your refund will be done promptly and certainly within 30 days. Your refund will be done according to your method of payment.

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