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Under sink water heater

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Under sink water heater for sale on Ireland's largest auction and classifieds sites

Home / Heating, Cooling & Air / Under sink water heater refurbished & used for sale | For Sale UK
10l 1500w instant electric - 1500w, hot

10l 1500w instant electric - 1500w, hot

£64.59 · Buy It Now

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1500w 15l electric instant hot - electric,

1500w 15l electric instant hot - electric,

£75.00 · Buy It Now

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Electric tankless instant - instant, hot

Electric tankless instant - instant, hot

£30.99 · Buy It Now

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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£48.89 · Buy It Now

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Electric tankless instant - tankless, hot

Electric tankless instant - tankless, hot

£22.99 · Buy It Now

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Electric tankless instant 3kw - electric,

Electric tankless instant 3kw - electric,

£49.99 · Buy It Now

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Electric tankless instant - tankless, 3kw

Electric tankless instant - tankless, 3kw

£50.99 · Buy It Now

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Electric tankless instant - electric,

Electric tankless instant - electric,

£30.88 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£23.99 · Buy It Now

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Electric instant water - electric, heater

Electric instant water - electric, heater

£69.99 · Buy It Now

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Electric tankless instant - electric,

Electric tankless instant - electric,

£23.99 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£34.99 · Buy It Now

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Electric hot water - uk,

Electric hot water - uk,

£53.99 · Buy It Now

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6kw instant hot - 6kw, water

6kw instant hot - 6kw, water

£69.95 · Buy It Now

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Electric instant water - instant, heater

Electric instant water - instant, heater

£60.35 · Buy It Now

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5500w electric tankless - electric,

5500w electric tankless - electric,

£30.89 · Buy It Now

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Electric tankless water heater - electric,

Electric tankless water heater - electric,

£22.99 · Buy It Now

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3000w instant tankless - instant,

3000w instant tankless - instant,

£31.89 · Buy It Now

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Triton showers - showers,

Triton showers - showers,

£99.95 · Buy It Now

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15l electric instant - instant, hot

15l electric instant - instant, hot

£61.99 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£39.99 · Buy It Now

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15l 1500w electric instant - instant, hot

15l 1500w electric instant - instant, hot

£71.99 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£30.90 · Buy It Now

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Electric hot water storage - 8l,

Electric hot water storage - 8l,

£53.95 · Buy It Now

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Electric instant water - electric, heater

Electric instant water - electric, heater

£22.20 · Buy It Now

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5kw 10l electric instant hot - 10l,

5kw 10l electric instant hot - 10l,

£61.99 · Buy It Now

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5kw 10l electric instant hot - electric,

5kw 10l electric instant hot - electric,

£59.99 · Buy It Now

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Electric tankless instant - electric,

Electric tankless instant - electric,

£34.16 · Buy It Now

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Instant electric tankless - instant,

Instant electric tankless - instant,

£85.95 · Buy It Now

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Dexpro litre under - dexpro,

Dexpro litre under - dexpro,

£109.99 · Buy It Now

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Litre under sink electric - litre,

Litre under sink electric - litre,

£129.99 · Buy It Now

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4500w 6000w electric - 4500w-6000w, tankless

4500w 6000w electric - 4500w-6000w, tankless

£75.95 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£24.48 · Buy It Now

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Ariston andris lux 15l - andris,

Ariston andris lux 15l - andris,

£190.00 · Buy It Now

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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£50.99 · Buy It Now

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5500w electric tankless - 5500w~electric,

5500w electric tankless - 5500w~electric,

£30.90 · Buy It Now

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Electric instant hot water - electric,

Electric instant hot water - electric,

£48.99 · Buy It Now

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Electric water heater - water,

Electric water heater - water,

£20.49 · Buy It Now

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15l electric instant hot - hot, water

15l electric instant hot - hot, water

£117.47 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£59.99 · Buy It Now

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Ariston andris 10l under - ariston,

Ariston andris 10l under - ariston,

£90.00 · Buy It Now

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10l electric instant hot water - hot,

10l electric instant hot water - hot,

£61.99 · Buy It Now

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7000w electric tankless - 7000w,

7000w electric tankless - 7000w,

£69.99 · Buy It Now

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5500w electric tankless - 5500w~electric,

5500w electric tankless - 5500w~electric,

£30.99 · Buy It Now

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Vented under sink - 5l,

Vented under sink - 5l,

£109.99 · Buy It Now

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Dexpro 10l unvented water - dexpro,

Dexpro 10l unvented water - dexpro,

£133.36 · Buy It Now

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Ariston andris lux under - ariston andris,

Ariston andris lux under - ariston andris,

£89.10 · Buy It Now

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Ariston andris 15l 3kw - ariston,

Ariston andris 15l 3kw - ariston,

£85.00 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£32.93 · Buy It Now

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Hyco speedflow litre - 15,

Hyco speedflow litre - 15,

£120.00 · Buy It Now

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Electric instant hot - electric, water

Electric instant hot - electric, water

£51.55 · Buy It Now

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Triton instaflow instantaneous - triton,

Triton instaflow instantaneous - triton,

£176.23 · Buy It Now

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5kw electric hot - 1.5kw,

5kw electric hot - 1.5kw,

£51.69 · Buy It Now

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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£29.50 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£61.99 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£48.98 · Buy It Now

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Water heater 2kw under sink - heater,

Water heater 2kw under sink - heater,

£54.99 · Buy It Now

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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£38.00 · Buy It Now

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5kw electric instant - instant, hot

5kw electric instant - instant, hot

£48.99 · Buy It Now

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Electric instant hot - electric,

Electric instant hot - electric,

£51.55 · Buy It Now

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15l electric instant hot - 15l, water

15l electric instant hot - 15l, water

£71.99 · Buy It Now

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Electric tankless instant - tankless, hot

Electric tankless instant - tankless, hot

£28.20 · Buy It Now

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15l electric instant hot - instant,

15l electric instant hot - instant,

£65.99 · Buy It Now

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Electric tankless instant - tankless, hot

Electric tankless instant - tankless, hot

£30.90 · Buy It Now

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Dexpro litre under sink - litre,

Dexpro litre under sink - litre,

£99.99 · Buy It Now

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Under counter electric - electric, hot

Under counter electric - electric, hot

£99.99 · Buy It Now

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10l 1500w electric - 1500w,

10l 1500w electric - 1500w,

£61.99 · Buy It Now

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10l 15l electric instant - 10l-15l, hot

10l 15l electric instant - 10l-15l, hot

£64.90 · Buy It Now

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5kw electric instant water - 3.5kw,

5kw electric instant water - 3.5kw,

£124.95 · Buy It Now

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5kw electric instant - electric,

5kw electric instant - electric,

£61.99 · Buy It Now

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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£51.57 · Buy It Now

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5kw electric hot water - hot,

5kw electric hot water - hot,

£67.99 · Buy It Now

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Hyco speedflow litre - hyco,

Hyco speedflow litre - hyco,

£135.00 · Buy It Now

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15l electric instant - 10/12/15l, hot

15l electric instant - 10/12/15l, hot

£61.99 · Buy It Now

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15l electric instant hot - instant,

15l electric instant hot - instant,

£61.99 · Buy It Now

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12l electric hot water storage - 12l,

12l electric hot water storage - 12l,

£67.99 · Buy It Now

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12l 5kw electric - 1.5kw, water

12l 5kw electric - 1.5kw, water

£67.99 · Buy It Now

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1500w 12l electric instant - 1500w, hot

1500w 12l electric instant - 1500w, hot

£67.99 · Buy It Now

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15l electric instant hot - electric,

15l electric instant hot - electric,

£61.99 · Buy It Now

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5kw electric instant hot - instant,

5kw electric instant hot - instant,

£61.99 · Buy It Now

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12l 1500w electric hot water - 1500w,

12l 1500w electric hot water - 1500w,

£67.99 · Buy It Now

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5kw electric instant hot - 1.5kw,

5kw electric instant hot - 1.5kw,

£67.99 · Buy It Now

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12l electric hot water - 12l,

12l electric hot water - 12l,

£67.99 · Buy It Now

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5kw 12l electric - electric, hot

5kw 12l electric - electric, hot

£67.99 · Buy It Now

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5kw electric instant hot - electric,

5kw electric instant hot - electric,

£67.99 · Buy It Now

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5kw electric instant hot - 1.5kw,

5kw electric instant hot - 1.5kw,

£61.99 · Buy It Now

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12l electric instant - instant, water

12l electric instant - instant, water

£67.99 · Buy It Now

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Ariston undersink water heater - ariston,

Ariston undersink water heater - ariston,

£64.99 · Buy It Now

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5kw electric instant hot - electric,

5kw electric instant hot - electric,

£61.99 · Buy It Now

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2kw 15liter electric hot water - electric,

2kw 15liter electric hot water - electric,

£124.99 · Buy It Now

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Hyco electric speedflow - -,

Hyco electric speedflow - -,

£104.99 · Buy It Now

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15l electric hot water - 10/12/15l,

15l electric hot water - 10/12/15l,

£61.99 · Buy It Now

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15l electric instant hot - instant,

15l electric instant hot - instant,

£71.99 · Buy It Now

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5kw electric instant hot - 1.5kw,

5kw electric instant hot - 1.5kw,

£67.99 · Buy It Now

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2kw 10liter electric - 2kw, hot

2kw 10liter electric - 2kw, hot

£114.99 · Buy It Now

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6000w electric tankless - 6000w,

6000w electric tankless - 6000w,

£72.95 · Buy It Now

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📊96 listings · from £20.49 · avg £66.15

Browse 96 under sink water heater listings currently in our index. Prices range from £20.49 to £190, with an average of £66.15. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about under sink water heater →

Try this: digital thermostat | radiator cover bookcase | biasi boiler | glow worm cxi pcb | baxi gas combi boilers | boilermate | ferroli combi boiler | aladdin wick | vaillant ecotec plus | ceramic tower heater

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Everything you need to know about under sink water heater

Whether you are looking for a brand-new or second-hand under sink water heater, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £20.49, while premium listings can reach £190 — giving you a wide budget spread to work with. The average price of £66.15 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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