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Ariston water heater kit - water, a

Ariston water heater kit - water, a

€24.54
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Electric tankless instant - electric,

Electric tankless instant - electric,

€50.99
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120l electric hot water - electric,

120l electric hot water - electric,

€125.99
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Biasi multipoint 16s - multipoint, 30kw

Biasi multipoint 16s - multipoint, 30kw

€300.00
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Chaffoteaux britony ii bf - britony,

Chaffoteaux britony ii bf - britony,

€14.99
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Ariston water heater - ariston,

Ariston water heater - ariston,

€27.99
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Chaffoteaux britony ii - chaffoteaux, bf

Chaffoteaux britony ii - chaffoteaux, bf

€20.50
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Ariston litre andris lux - 2,

Ariston litre andris lux - 2,

€32.99
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Chaffoteaux britony ii bf - chaffoteaux,

Chaffoteaux britony ii bf - chaffoteaux,

€19.99
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Main multipoint bf erp - main,

Main multipoint bf erp - main,

€74.99
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Ariston 406801 kit - ariston,

Ariston 406801 kit - ariston,

€32.96
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Worcester 7716191085 flue bend - worcester,

Worcester 7716191085 flue bend - worcester,

€20.00
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Main multipoint water - multipoint, bf

Main multipoint water - multipoint, bf

€34.99
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32kw 16l lpg propane gas - 16l,

32kw 16l lpg propane gas - 16l,

€180.49
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Tankless portable gas water - tankless,

Tankless portable gas water - tankless,

€64.89
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1500w electric instant hot - 1500w,

1500w electric instant hot - 1500w,

€70.99
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New worcester bosch - new,

New worcester bosch - new,

€33.99
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Chaffoteaux britony 21kw - ii, t

Chaffoteaux britony 21kw - ii, t

€20.50
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New pair worcester bosch - 1,

New pair worcester bosch - 1,

€30.38
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Worcester 7716191085 flue bend - worcester,

Worcester 7716191085 flue bend - worcester,

€23.58
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Zilmet ultra pro - zilmet, litre

Zilmet ultra pro - zilmet, litre

€42.99
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Only worcester 7716191085 - only,

Only worcester 7716191085 - only,

€14.00
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Baxi bermuda back boilers 1 - back, 25/1

Baxi bermuda back boilers 1 - back, 25/1

€15.45
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Johnson starley 1000 0703265 - johnson, 1000-0703265

Johnson starley 1000 0703265 - johnson, 1000-0703265

€94.95
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Main multipoint water - bf,

Main multipoint water - bf,

€79.99
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Main multipoint water - main,

Main multipoint water - main,

€79.99
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Fernox express central - express,

Fernox express central - express,

€8.87
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Fernox express leak sealer - leak,

Fernox express leak sealer - leak,

€24.99
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120l electric hot water - electric,

120l electric hot water - electric,

€156.21
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18l propane gas - 18l, water

18l propane gas - 18l, water

€95.98
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18l propane gas - propane,

18l propane gas - propane,

€99.99
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120l electric hot - 50/80/120l,

120l electric hot - 50/80/120l,

€200.03
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Viessmann angle flue - 45°,

Viessmann angle flue - 45°,

€16.15
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Ideal classic 50 60 - ideal,

Ideal classic 50 60 - ideal,

€15.45
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Ariston europrisma 2 litre - ariston,

Ariston europrisma 2 litre - ariston,

€32.96
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Fernox express leak sealer - express,

Fernox express leak sealer - express,

€26.70
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Potterton prima 30b 40b - potterton,

Potterton prima 30b 40b - potterton,

€24.95
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Genuine worcester highflow - worcester, 3.5

Genuine worcester highflow - worcester, 3.5

€15.45
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Ariston andris lux - ariston,

Ariston andris lux - ariston,

€59.98
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Propane gas tankless - 6l,

Propane gas tankless - 6l,

€64.89
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Ideal mexico bed super - super, 40

Ideal mexico bed super - super, 40

€15.45
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Worcester 7716191085 flue bend - worcester,

Worcester 7716191085 flue bend - worcester,

€21.49
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Baxi bermuda back - baxi, boilers

Baxi bermuda back - baxi, boilers

€24.99
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Turbo tank cleaner water - turbo,

Turbo tank cleaner water - turbo,

€61.74
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Chaffoteaux britony - britony, 2

Chaffoteaux britony - britony, 2

€14.99
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New worcester bosch - new, 45°

New worcester bosch - new, 45°

€49.99
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Prv flow turbine - prv,

Prv flow turbine - prv,

€107.21
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Chaffoteaux britony - chaffoteaux, 2

Chaffoteaux britony - chaffoteaux, 2

€64.95
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Ariston andris lux - 2l,

Ariston andris lux - 2l,

€59.78
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Fernox express leak - fernox, sealer

Fernox express leak - fernox, sealer

€25.66
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Chaffoteaux ariston 60081366 - ariston,

Chaffoteaux ariston 60081366 - ariston,

€5.59
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Worcester highflow 5 - 3.5, 4.5

Worcester highflow 5 - 3.5, 4.5

€14.99
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Zilmet ultra pro 12l potable - ultra,

Zilmet ultra pro 12l potable - ultra,

€16.15
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Worcester 7716191085 flue bend - 7716191085,

Worcester 7716191085 flue bend - 7716191085,

€31.90
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Teddington csa0003 combisave - teddington,

Teddington csa0003 combisave - teddington,

€43.34
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Electrode ideal 003038 388396 - ideal,

Electrode ideal 003038 388396 - ideal,

€16.15
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Worcester degree elbow - worcester,

Worcester degree elbow - worcester,

€31.90
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Glowworm cast iron bbu - cast, 45f

Glowworm cast iron bbu - cast, 45f

€24.99
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Potterton flamingo mk2 - flamingo,

Potterton flamingo mk2 - flamingo,

€15.45
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Ideal wlx 60 - wlx, &

Ideal wlx 60 - wlx, &

€15.45
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New worcester bosch - new, 45°

New worcester bosch - new, 45°

€49.99
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Worcester flow sensor - sensor, +

Worcester flow sensor - sensor, +

€107.21
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Chaffoteaux corvec sh12 - corvec, water

Chaffoteaux corvec sh12 - corvec, water

€20.50
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Chaffoteaux britony a - britony, ii

Chaffoteaux britony a - britony, ii

€20.50
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Ferroli hawk thermocouple - hawk,

Ferroli hawk thermocouple - hawk,

€15.45
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Chaffoteaux britony combi - britony,

Chaffoteaux britony combi - britony,

€19.99
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Center universal expansion - universal,

Center universal expansion - universal,

€13.99
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7716191085 new worcester bosch - 7716191085,

7716191085 new worcester bosch - 7716191085,

€48.49
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Worcester manifold unit with - worcester,

Worcester manifold unit with - worcester,

€107.21
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Honeywell thermocouple 900mm - thermocouple,

Honeywell thermocouple 900mm - thermocouple,

€16.50
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Chaffoteaux 60081980 pressure - 60081980,

Chaffoteaux 60081980 pressure - 60081980,

€18.56
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Worcester 7716191085

Worcester 7716191085

€42.30
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Ideal wlx 45p - ideal, rs

Ideal wlx 45p - ideal, rs

€39.99
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Worcester boiler flow - boiler,

Worcester boiler flow - boiler,

€107.21
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Worcester boiler repair kit - worcester,

Worcester boiler repair kit - worcester,

€107.21
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Ideal domestic mexico slimline - domestic,

Ideal domestic mexico slimline - domestic,

€9.00
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Fernox express central - express,

Fernox express central - express,

€27.89
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Ferroli combi 76ff 77ff - ferroli,

Ferroli combi 76ff 77ff - ferroli,

€15.99
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Chaffoteaux 60081980 pressure - 60081980,

Chaffoteaux 60081980 pressure - 60081980,

€40.00
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Potterton boiler thermocouple - potterton,

Potterton boiler thermocouple - potterton,

€74.99
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Glow worm economy - glow,

Glow worm economy - glow,

€19.99
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Genuine worcester highflow 5 - genuine,

Genuine worcester highflow 5 - genuine,

€19.99
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Viessmann 7373227 flue - 45°,

Viessmann 7373227 flue - 45°,

€46.54
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Chaffoteaux ariston 81366 - 81366, now

Chaffoteaux ariston 81366 - 81366, now

€5.59
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Worcester prv manifold - +,

Worcester prv manifold - +,

€107.21
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Chaffoteaux britony combi - britony,

Chaffoteaux britony combi - britony,

€19.35
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Ideal mexico slimline - mexico, cf

Ideal mexico slimline - mexico, cf

€39.99
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Ideal concord 450 - 550, 650

Ideal concord 450 - 550, 650

€19.99
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Worcester boiler manifold - boiler, +

Worcester boiler manifold - boiler, +

€107.21
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Boiler flow turbine prv - flow,

Boiler flow turbine prv - flow,

€107.21
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Combisave teddington csa0003 - combisave,

Combisave teddington csa0003 - combisave,

€54.99
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Genuine worcester heatslave - worcester,

Genuine worcester heatslave - worcester,

€15.51
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Drayton 0702020 angle auto - angle,

Drayton 0702020 angle auto - angle,

€22.49
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New worcester bosch - worcester,

New worcester bosch - worcester,

€49.99
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5kw electric instant - 3.5kw,

5kw electric instant - 3.5kw,

€124.95
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5500w electric instant - 5500w, hot

5500w electric instant - 5500w, hot

€45.89
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📊96 listings · from €5.59 · avg €49.46

Browse 96 gas water heater undersink listings currently in our index. Prices range from €5.59 to €300, with an average of €49.46. 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 gas water heater undersink →

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Whether you are looking for a brand-new or second-hand gas water heater undersink, 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 €5.59, while premium listings can reach €300 — giving you a wide budget spread to work with. The average price of €49.46 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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