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Under sink water heater

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Home / Water Heating & Filtration / Under sink water heater refurbished & used for sale | For Sale UK
3kw electric tankless instant - 3kw,

3kw electric tankless instant - 3kw,

£39.89
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Electric tankless instant - electric,

Electric tankless instant - electric,

£50.99
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Instant hot electric water - electric,

Instant hot electric water - electric,

£48.89
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£48.89
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Electric tankless instant - tankless,

Electric tankless instant - tankless,

£52.50
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Geesen gallon 11l 5kw - geesen, 1.5kw

Geesen gallon 11l 5kw - geesen, 1.5kw

£43.86
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Electric instant hot water - electric,

Electric instant hot water - electric,

£49.32
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1500w electric instant - electric,

1500w electric instant - electric,

£60.89
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5kw 10l electric - 1.5kw, instant

5kw 10l electric - 1.5kw, instant

£59.99
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Electric instant water - electric,

Electric instant water - electric,

£69.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£34.97
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3000w instant electric - instant,

3000w instant electric - instant,

£39.89
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5kw electric hot - hot, water

5kw electric hot - hot, water

£54.89
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1500w 15l electric - electric, instant

1500w 15l electric - electric, instant

£75.00
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15l electric instant - 15l,

15l electric instant - 15l,

£62.89
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5kw electric instant water - electric,

5kw electric instant water - electric,

£134.99
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Instant electric tankless - electric,

Instant electric tankless - electric,

£22.19
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5500w instant electric - 5500w,

5500w instant electric - 5500w,

£34.97
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£43.99
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Zip aquapoint ap3 2000w 10l - zip,

Zip aquapoint ap3 2000w 10l - zip,

£156.70
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3500w instant electric - 3500w,

3500w instant electric - 3500w,

£30.96
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10l 1500w electric - 1500w,

10l 1500w electric - 1500w,

£59.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£26.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£34.97
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15l electric instant hot - 10/12/15l,

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

£59.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£42.99
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3000w electric tankless - electric,

3000w electric tankless - electric,

£44.99
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3500w instant electric - 3500w,

3500w instant electric - 3500w,

£30.97
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5500w electric instant hot - 5500w,

5500w electric instant hot - 5500w,

£49.99
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6000w electric tankless - 6000w,

6000w electric tankless - 6000w,

£54.96
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6000w electric tankless - electric,

6000w electric tankless - electric,

£54.99
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Dexpro litre under sink - dexpro,

Dexpro litre under sink - dexpro,

£99.99
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Under sink electric water - under,

Under sink electric water - under,

£45.00
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1500w electric instant hot - instant,

1500w electric instant hot - instant,

£52.80
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3500w electric tankless - 3500w,

3500w electric tankless - 3500w,

£30.97
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Ferroli novo 2kw unvented - ferroli,

Ferroli novo 2kw unvented - ferroli,

£52.70
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£42.99
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15l 1500w electric hot water - 15l,

15l 1500w electric hot water - 15l,

£69.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£30.98
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Dexpro 5kw inline - dexpro, 3.5kw

Dexpro 5kw inline - dexpro, 3.5kw

£125.00
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10l 1500w electric hot - 10l, water

10l 1500w electric hot - 10l, water

£54.99
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£44.89
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£34.97
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5kw 10l electric - 1.5kw,

5kw 10l electric - 1.5kw,

£61.99
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15l electric instant hot - 10/12/15l,

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

£64.99
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Ariston andris 10l under - ariston,

Ariston andris 10l under - ariston,

£90.00
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10l 1500w electric - 10l,

10l 1500w electric - 10l,

£54.98
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£59.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£49.86
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5kw 10l electric - 1.5kw,

5kw 10l electric - 1.5kw,

£59.89
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Electric tankless instant - electric,

Electric tankless instant - electric,

£23.35
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5kw electric instant - electric, hot

5kw electric instant - electric, hot

£52.99
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5500w mini tankless electric - 5500w,

5500w mini tankless electric - 5500w,

£48.89
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Electric tankless instant - tankless, 3kw

Electric tankless instant - tankless, 3kw

£42.99
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220v electric instant - instant, small

220v electric instant - instant, small

£59.89
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3000w electric tankless - electric,

3000w electric tankless - electric,

£39.89
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10l kitchen electric - rv,

10l kitchen electric - rv,

£59.99
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Warmcity water heater 501 - water,

Warmcity water heater 501 - water,

£69.99
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£42.99
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15l electric water - 15l, heater

15l electric water - 15l, heater

£62.89
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3000w instant electric - instant,

3000w instant electric - instant,

£44.99
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Triton instaflow 2kw stored - instaflow,

Triton instaflow 2kw stored - instaflow,

£139.07
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Instant hot electric - instant, water

Instant hot electric - instant, water

£49.32
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Electric instant hot - instant,

Electric instant hot - instant,

£64.99
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5kw electric instant hot - electric,

5kw electric instant hot - electric,

£61.99
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10l 5kw electric hot water - 1.5kw,

10l 5kw electric hot water - 1.5kw,

£54.99
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Dexpro litre under sink - 10,

Dexpro litre under sink - 10,

£109.99
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Fast heat electric instant hot - fast,

Fast heat electric instant hot - fast,

£52.88
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Dexpro 2kw digital unvented - digital,

Dexpro 2kw digital unvented - digital,

£129.99
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10l 1500w electric - 10l, instant

10l 1500w electric - 10l, instant

£59.99
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1500w 10l electric instant hot - 1500w,

1500w 10l electric instant hot - 1500w,

£51.99
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Dexpro 5kw inline instant - dexpro, 7.5kw

Dexpro 5kw inline instant - dexpro, 7.5kw

£145.99
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1500w 15l electric hot - 1500w,

1500w 15l electric hot - 1500w,

£69.99
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Ariston litre 2kw unvented - 10,

Ariston litre 2kw unvented - 10,

£63.10
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Heatrae sadia streamline - heatrae,

Heatrae sadia streamline - heatrae,

£198.30
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Electric tankless instant - tankless,

Electric tankless instant - tankless,

£42.99
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10l 1500w electric - 1500w, hot

10l 1500w electric - 1500w, hot

£61.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£42.99
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15l 1500w electric instant - electric,

15l 1500w electric instant - electric,

£69.99
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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£52.50
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15l electric instant hot - 10/12/15l,

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

£61.99
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Electric instant hot water - electric,

Electric instant hot water - electric,

£52.48
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10l 15l electric instant - 10l-15l,

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

£59.99
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10l 1500w electric - 1500w, hot

10l 1500w electric - 1500w, hot

£61.99
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5kw electric instant hot - instant,

5kw electric instant hot - instant,

£61.89
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£52.50
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Ferroli novo 2kw unvented - novo,

Ferroli novo 2kw unvented - novo,

£52.70
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Dexpro 5kw inline - dexpro, 5.5kw

Dexpro 5kw inline - dexpro, 5.5kw

£125.00
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15l electric instant - 15l, hot

15l electric instant - 15l, hot

£64.99
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5kw electric instant hot - electric,

5kw electric instant hot - electric,

£59.99
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£42.99
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Hyco speedflow electric - hyco,

Hyco speedflow electric - hyco,

£61.02
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Triton instaflow 5kw litre - triton,

Triton instaflow 5kw litre - triton,

£111.29
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Litre under sink electric - litre,

Litre under sink electric - litre,

£129.99
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Zip inline cex tankless - zip,

Zip inline cex tankless - zip,

£128.37
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Vented undersink electric - 6l,

Vented undersink electric - 6l,

£109.99
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📊96 listings · from £22.19 · avg £63.68
⚠️ These listings were last updated more than 20 days ago. Search for fresh listings

Browse 96 under sink water heater listings currently in our index. Prices range from £22.19 to £198.3, with an average of £63.68. 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: biasi boiler | glow worm cxi pcb | baxi gas combi boilers | boilermate | ferroli combi boiler | ariston water heater | grundfos alpha 2 | ariston boiler | ravenheat csi 85 | biasi pcb

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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 £22.19, while premium listings can reach £198.3 — giving you a wide budget spread to work with. The average price of £63.68 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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