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Under sink water heater

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Home / Water Heating & Filtration / Under sink water heater for sale – 96 used, around £50 | For Sale UK
Under sink water heater - 8l,

Under sink water heater - 8l,

£56.99
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Instant electric tankless - electric,

Instant electric tankless - electric,

£29.99
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5kw 10l electric - 1.5kw, hot

5kw 10l electric - 1.5kw, hot

£55.56
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1500w 15l electric instant - instant, hot

1500w 15l electric instant - instant, hot

£75.00
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Electric tankless instant - electric,

Electric tankless instant - electric,

£26.84
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3000w electric tankless - electric,

3000w electric tankless - electric,

£40.74
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3000w instant electric - 3000w,

3000w instant electric - 3000w,

£40.89
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15l electric instant hot - electric, water

15l electric instant hot - electric, water

£69.50
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5kw electric tankless - 5.5kw,

5kw electric tankless - 5.5kw,

£29.89
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£40.89
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£40.89
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3500w instant electric - 3500w,

3500w instant electric - 3500w,

£24.87
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10l electric instant hot water - 10l,

10l electric instant hot water - 10l,

£63.99
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Zip inline es6 - zip,

Zip inline es6 - zip,

£156.70
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120l electric hot water - electric,

120l electric hot water - electric,

£199.99
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6000w electric tankless - 6000w,

6000w electric tankless - 6000w,

£54.78
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Electric tankless instant - electric,

Electric tankless instant - electric,

£28.88
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Dexpro litre under sink - 6,

Dexpro litre under sink - 6,

£65.00
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10l 5kw electric instant - instant, hot

10l 5kw electric instant - instant, hot

£59.29
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£26.69
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Instant electric tankless - instant,

Instant electric tankless - instant,

£29.89
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5500w electric tankless - 5500w,

5500w electric tankless - 5500w,

£32.99
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Ariston andris lux 15l 2kw - 15l,

Ariston andris lux 15l 2kw - 15l,

£52.70
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£29.89
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£32.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£32.97
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Cex electric instantaneous - cex-u,

Cex electric instantaneous - cex-u,

£297.10
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Electric instant water - instant,

Electric instant water - instant,

£22.79
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6kw smart electric - 6kw,

6kw smart electric - 6kw,

£54.99
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1500w 10l electric instant - 1500w,

1500w 10l electric instant - 1500w,

£56.87
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5500w electric instant hot - 5500w,

5500w electric instant hot - 5500w,

£47.99
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6000w electric tankless - 6000w,

6000w electric tankless - 6000w,

£54.99
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5500w electric tankless - electric,

5500w electric tankless - electric,

£33.98
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£34.99
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Zip aquapoint iii ap3 - aquapoint,

Zip aquapoint iii ap3 - aquapoint,

£52.70
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3kw electric tankless - electric, instant

3kw electric tankless - electric, instant

£38.89
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£32.99
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Mini tank electric water - tank,

Mini tank electric water - tank,

£56.90
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1500w electric instant hot - 1500w,

1500w electric instant hot - 1500w,

£57.36
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120l electric hot water - hot,

120l electric hot water - hot,

£199.99
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£49.99
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3500w electric tankless - 3500w,

3500w electric tankless - 3500w,

£24.88
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£40.75
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4500w electric tankless - 4500w,

4500w electric tankless - 4500w,

£26.99
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1500w electric instant hot - instant,

1500w electric instant hot - instant,

£57.99
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5kw electric instant - 1.5kw,

5kw electric instant - 1.5kw,

£63.99
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Electric tankless instant - tankless,

Electric tankless instant - tankless,

£32.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£42.99
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Instant electric tankless - instant, hot

Instant electric tankless - instant, hot

£29.89
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3kw electric instant tankless - instant,

3kw electric instant tankless - instant,

£40.75
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3500w instant electric - 3500w,

3500w instant electric - 3500w,

£24.87
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5kw electric instant hot - electric,

5kw electric instant hot - electric,

£58.99
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5500w instant electric - 5500w,

5500w instant electric - 5500w,

£32.98
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10l 1500w electric instant hot - electric,

10l 1500w electric instant hot - electric,

£63.99
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10l electric instant hot water - electric,

10l electric instant hot water - electric,

£57.49
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£43.98
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£58.99
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Triton instaflow instantaneous - triton,

Triton instaflow instantaneous - triton,

£149.82
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10l 5kw electric hot - 1.5kw, water

10l 5kw electric hot - 1.5kw, water

£63.99
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5500w electric tankless - 5500w,

5500w electric tankless - 5500w,

£42.99
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£40.89
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£42.89
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3kw electric tankless - tankless, instant

3kw electric tankless - tankless, instant

£40.75
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Dexpro 2kw digital unvented - 2kw,

Dexpro 2kw digital unvented - 2kw,

£140.74
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1500w 10l electric - electric, hot

1500w 10l electric - electric, hot

£58.99
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£32.98
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Zip inline cexu electronic - zip,

Zip inline cexu electronic - zip,

£333.10
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10l 1500w electric instant hot - electric,

10l 1500w electric instant hot - electric,

£63.99
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Dexpro litre under - dexpro, sink

Dexpro litre under - dexpro, sink

£99.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£35.99
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1500w electric instant hot - electric,

1500w electric instant hot - electric,

£53.99
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10l 1500w electric - electric, hot

10l 1500w electric - electric, hot

£63.99
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1500w 10l electric instant - 1500w, hot

1500w 10l electric instant - 1500w, hot

£58.94
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Dexpro litre under sink - dexpro,

Dexpro litre under sink - dexpro,

£74.99
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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£26.82
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3500w electric tankless water - 3500w,

3500w electric tankless water - 3500w,

£22.49
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3500w electric tankless - 3500w,

3500w electric tankless - 3500w,

£24.88
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2500w electric immersion water - immersion,

2500w electric immersion water - immersion,

£9.59
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Water heater 2kw under - heater, 5l

Water heater 2kw under - heater, 5l

£44.99
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3500w electric instant - 3500w,

3500w electric instant - 3500w,

£24.29
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£49.99
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3000w instant electric - instant,

3000w instant electric - instant,

£49.99
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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£54.99
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Electric tankless instant - electric,

Electric tankless instant - electric,

£48.59
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Crown litre under sink - crown,

Crown litre under sink - crown,

£118.99
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1500w under sink electric - 8l,

1500w under sink electric - 8l,

£56.90
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Instant hot water - instant,

Instant hot water - instant,

£35.99
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10l 1500w electric instant - 10l,

10l 1500w electric instant - 10l,

£63.99
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1500w electric hot - 8l,

1500w electric hot - 8l,

£56.90
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Triton instaflow 5kw - instaflow, 5

Triton instaflow 5kw - instaflow, 5

£104.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£42.99
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15l electric instant hot - electric,

15l electric instant hot - electric,

£69.99
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1500w under sink electric - 1500w,

1500w under sink electric - 1500w,

£56.99
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1500w electric instant - 1500w,

1500w electric instant - 1500w,

£58.89
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Steibel eltron under sink - under,

Steibel eltron under sink - under,

£187.90
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5500w electric instant - 5500w, hot

5500w electric instant - 5500w, hot

£49.99
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📊96 listings · from £9.59 · avg £60.98
⚠️ These listings were last updated more than 8 days ago. Search for fresh listings

Browse 96 under sink water heater listings currently in our index. Prices range from £9.59 to £333.1, with an average of £60.98. 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 | vaillant ecotec plus | honeywell programmer | ariston water heater | grundfos alpha 2 | ariston boiler

Shop by budget

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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 £9.59, while premium listings can reach £333.1 — giving you a wide budget spread to work with. The average price of £60.98 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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