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Under sink water heater

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

Home / Water Heating & Filtration / Under sink water heater refurbished & used for sale | For Sale UK
1500w electric instant - instant, hot

1500w electric instant - instant, hot

£59.99
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3000w electric tankless - electric,

3000w electric tankless - electric,

£41.57
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1500w electric instant - 1500w, hot

1500w electric instant - 1500w, hot

£70.99
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Electric tankless instant - tankless,

Electric tankless instant - tankless,

£41.56
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£49.99
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3kw electric tankless - electric,

3kw electric tankless - electric,

£38.00
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3kw electric tankless instant - electric,

3kw electric tankless instant - electric,

£42.89
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Electric tankless instant - electric,

Electric tankless instant - electric,

£27.89
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5500w electric instant - 5500w,

5500w electric instant - 5500w,

£45.89
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Electric tankless instant - electric, hot

Electric tankless instant - electric, hot

£27.28
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5500w electric instant hot - electric,

5500w electric instant hot - electric,

£49.80
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3000w instant electric - 3000w,

3000w instant electric - 3000w,

£42.89
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Electric tankless instant - electric,

Electric tankless instant - electric,

£30.97
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Dexpro 5kw inline - dexpro,

Dexpro 5kw inline - dexpro,

£146.74
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5kw electric instant - electric,

5kw electric instant - electric,

£60.00
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6000w electric tankless - 6000w,

6000w electric tankless - 6000w,

£54.96
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3500w electric tankless water - electric,

3500w electric tankless water - electric,

£22.29
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Zip aquapoint iii ap3 - aquapoint, ap3/10

Zip aquapoint iii ap3 - aquapoint, ap3/10

£104.70
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1500w 10l electric instant - 10l,

1500w 10l electric instant - 10l,

£50.62
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15l electric instant hot - 10/12/15l,

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

£69.99
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£42.89
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Electric instant water heater - electric,

Electric instant water heater - electric,

£21.29
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1500w 10l electric - electric, instant

1500w 10l electric - electric, instant

£56.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£49.99
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10l electric instant - 10l, water

10l electric instant - 10l, water

£63.99
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5500w electric instant hot - instant,

5500w electric instant hot - instant,

£49.80
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10l 5kw electric - 1.5kw, hot

10l 5kw electric - 1.5kw, hot

£58.99
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3500w instant electric - instant,

3500w instant electric - instant,

£24.87
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Litre under sink - under, electric

Litre under sink - under, electric

£129.99
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Electric tankless instant - tankless, hot

Electric tankless instant - tankless, hot

£47.99
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120l electric hot - hot, water

120l electric hot - hot, water

£123.99
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15l electric instant hot - instant, water

15l electric instant hot - instant, water

£70.99
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5500w electric instant - electric,

5500w electric instant - electric,

£45.99
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1500w 10l electric instant - 10l, hot

1500w 10l electric instant - 10l, hot

£51.21
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£42.89
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£49.99
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Small water heater 2kw - water,

Small water heater 2kw - water,

£49.95
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5500w instant electric - 5500w,

5500w instant electric - 5500w,

£30.15
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Electric instant hot - electric, water

Electric instant hot - electric, water

£59.99
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Electric water heater 8kw - electric,

Electric water heater 8kw - electric,

£57.99
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5500w electric tankless - 5500w,

5500w electric tankless - 5500w,

£30.97
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5kw electric instant hot - 1.5kw,

5kw electric instant hot - 1.5kw,

£53.99
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Instant electric tankless - instant,

Instant electric tankless - instant,

£24.79
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£49.99
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3000w electric tankless - 3000w,

3000w electric tankless - 3000w,

£43.99
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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£49.99
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Electric tankless instant - tankless,

Electric tankless instant - tankless,

£43.99
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5500w electric instant - electric,

5500w electric instant - electric,

£45.89
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1500w electric instant hot - 1500w,

1500w electric instant hot - 1500w,

£66.99
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10l kitchen electric - 10l, rv

10l kitchen electric - 10l, rv

£59.89
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Crown litre under - litre,

Crown litre under - litre,

£133.18
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£30.96
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£30.97
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£35.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£32.99
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Electric instant water heater - electric,

Electric instant water heater - electric,

£22.59
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Dexpro litre under sink - litre,

Dexpro litre under sink - litre,

£99.99
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15l 1500w electric instant - 15l, hot

15l 1500w electric instant - 15l, hot

£76.99
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10l 1500w electric instant - 10l, hot

10l 1500w electric instant - 10l, hot

£63.99
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Portable 2500w electric - portable,

Portable 2500w electric - portable,

£9.50
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3500w instant electric - instant,

3500w instant electric - instant,

£24.87
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3500w electric instant water - 3500w,

3500w electric instant water - 3500w,

£23.09
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5kw 10l electric instant - 1.5kw,

5kw 10l electric instant - 1.5kw,

£63.99
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Electric tankless instant - electric,

Electric tankless instant - electric,

£30.98
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15l electric instant hot - 15l, water

15l electric instant hot - 15l, water

£69.50
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5500w instant electric - 5500w,

5500w instant electric - 5500w,

£30.96
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Under sink 15l - sink, 30l

Under sink 15l - sink, 30l

£94.99
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3500w electric tankless - 3500w,

3500w electric tankless - 3500w,

£24.89
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5kw electric instant - electric, hot

5kw electric instant - electric, hot

£76.99
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3000w instant electric - 3000w,

3000w instant electric - 3000w,

£40.00
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3500w electric instant water - 3500w,

3500w electric instant water - 3500w,

£23.99
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Electric water heater - electric, 1500w

Electric water heater - electric, 1500w

£60.92
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5kw 10l electric instant - 10l, hot

5kw 10l electric instant - 10l, hot

£63.99
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3kw electric tankless instant - electric,

3kw electric tankless instant - electric,

£43.99
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10l 15l electric instant - 10l/15l,

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

£63.99
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5kw 10l electric instant - 1.5kw, hot

5kw 10l electric instant - 1.5kw, hot

£63.99
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220v electric instant small - electric,

220v electric instant small - electric,

£59.98
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Electric instant hot water - electric,

Electric instant hot water - electric,

£44.99
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Dexpro 2kw digital unvented - dexpro,

Dexpro 2kw digital unvented - dexpro,

£140.74
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5500w tankless mini - mini, water

5500w tankless mini - mini, water

£49.78
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Electric tankless instant hot - instant,

Electric tankless instant hot - instant,

£29.63
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10l 1500w electric instant - electric, hot

10l 1500w electric instant - electric, hot

£63.99
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Electric tankless instant - instant, hot

Electric tankless instant - instant, hot

£48.59
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5kw electric instant - ~1.5kw,

5kw electric instant - ~1.5kw,

£59.99
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3500w electric tankless - 3500w,

3500w electric tankless - 3500w,

£24.88
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Large electric hot water - electric,

Large electric hot water - electric,

£52.94
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10l electric instant - 10l,

10l electric instant - 10l,

£63.99
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10l 1500w instant - 10l,

10l 1500w instant - 10l,

£59.99
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5500w electric instant hot - 5500w,

5500w electric instant hot - 5500w,

£50.99
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Electric instant water heater - electric,

Electric instant water heater - electric,

£23.99
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5kw electric tankless - 5kw,

5kw electric tankless - 5kw,

£28.72
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Zip aquapoint unvented 10 - aquapoint, 3

Zip aquapoint unvented 10 - aquapoint, 3

£193.10
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Kitchen bathroom 4500w - bathroom,

Kitchen bathroom 4500w - bathroom,

£26.91
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Electric thankles instant - electric,

Electric thankles instant - electric,

£44.89
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5kw electric instant water - electric,

5kw electric instant water - electric,

£124.95
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5500w electric instant - 5500w,

5500w electric instant - 5500w,

£47.99
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📊96 listings · from £9.5 · avg £54.78

Browse 96 under sink water heater listings currently in our index. Prices range from £9.5 to £193.1, with an average of £54.78. 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 | baxi gas combi boilers | ferroli combi boiler | ariston water heater | grundfos alpha 2 | ariston boiler | biasi pcb | alpha boiler | ferroli optimax | ravenheat 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 £9.5, while premium listings can reach £193.1 — giving you a wide budget spread to work with. The average price of £54.78 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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