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Fish tank heaters

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Fish tank heaters for sale on Ireland's largest auction and classifieds sites

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Hepo aquarium heater fish tank - hepo,

Hepo aquarium heater fish tank - hepo,

£10.99 · Buy It Now

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Hidom submersible tropical - hidom,

Hidom submersible tropical - hidom,

£13.95 · Buy It Now

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Hidom proheat quartz - proheat, aquarium

Hidom proheat quartz - proheat, aquarium

£12.45 · Buy It Now

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200 300 500w led - led, digital

200 300 500w led - led, digital

£9.99 · Buy It Now

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300w aquarium heater fish - heater, tank

300w aquarium heater fish - heater, tank

£9.95 · Buy It Now

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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£14.99 · Buy It Now

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Fluval aquarium heater - fluval,

Fluval aquarium heater - fluval,

£26.99 · Buy It Now

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Aquarium water heater aqua - aquarium,

Aquarium water heater aqua - aquarium,

£12.59 · Buy It Now

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Usb mini aquarium fish tank - mini,

Usb mini aquarium fish tank - mini,

£8.95 · Buy It Now

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Hidom submersible tropical - hidom,

Hidom submersible tropical - hidom,

£11.45 · Buy It Now

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Interpet deltatherm - interpet,

Interpet deltatherm - interpet,

£10.95 · Buy It Now

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Hepo submersible aquarium fish - hepo,

Hepo submersible aquarium fish - hepo,

£9.99 · Buy It Now

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Hidom aquarium heater - hidom,

Hidom aquarium heater - hidom,

£9.65 · Buy It Now

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Hidom proheat quartz aquarium - quartz,

Hidom proheat quartz aquarium - quartz,

£16.45 · Buy It Now

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50w 500w led digital - 50w-500w,

50w 500w led digital - 50w-500w,

£12.74 · Buy It Now

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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£12.95 · Buy It Now

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Aquarium water heater - water,

Aquarium water heater - water,

£11.55 · Buy It Now

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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£24.99 · Buy It Now

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Swell 100w aquarium fish - 100w, tank

Swell 100w aquarium fish - 100w, tank

£10.99 · Buy It Now

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Fish fun heater thermostat - fish,

Fish fun heater thermostat - fish,

£9.99 · Buy It Now

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Aquarium water heater aqua - water,

Aquarium water heater aqua - water,

£12.15 · Buy It Now

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Led digital aquarium - digital,

Led digital aquarium - digital,

£17.56 · Buy It Now

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Aquael plastic ultra - aquael,

Aquael plastic ultra - aquael,

£32.49 · Buy It Now

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200w fish tank aquarium - tank,

200w fish tank aquarium - tank,

£11.86 · Buy It Now

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Fluval heater thermostat - e, lcd

Fluval heater thermostat - e, lcd

£49.99 · Buy It Now

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Usb mini aquarium heating - aquarium,

Usb mini aquarium heating - aquarium,

£4.79 · Buy It Now

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Interpet deltatherm aquarium - deltatherm,

Interpet deltatherm aquarium - deltatherm,

£17.74 · Buy It Now

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Aquarium fish tank heater - fish,

Aquarium fish tank heater - fish,

£5.99 · Buy It Now

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300w aquarium fish - aquarium,

300w aquarium fish - aquarium,

£13.49 · Buy It Now

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Submersible aquarium tropical - submersible,

Submersible aquarium tropical - submersible,

£18.99 · Buy It Now

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Hidom quartz submersible - hidom,

Hidom quartz submersible - hidom,

£16.45 · Buy It Now

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Watt resun aquarium heater - 50,

Watt resun aquarium heater - 50,

£8.66 · Buy It Now

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Fluval series aquarium - series,

Fluval series aquarium - series,

£26.99 · Buy It Now

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Tropical aquarium fish tank - fish,

Tropical aquarium fish tank - fish,

£16.70 · Buy It Now

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10w usb mini aquarium - 10w,

10w usb mini aquarium - 10w,

£5.39 · Buy It Now

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200w aquarium water - 50-200w, heater

200w aquarium water - 50-200w, heater

£11.85 · Buy It Now

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Mini small aquarium fish - mini, tank

Mini small aquarium fish - mini, tank

£7.29 · Buy It Now

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Eheim jager aquarium fish - fish, tank

Eheim jager aquarium fish - fish, tank

£31.49 · Buy It Now

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25w fish tank aquarium heater - tank,

25w fish tank aquarium heater - tank,

£9.95 · Buy It Now

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Hidom submersible heater - hidom,

Hidom submersible heater - hidom,

£13.95 · Buy It Now

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Stainless steel aquarium - stainless,

Stainless steel aquarium - stainless,

£13.99 · Buy It Now

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200w aquarium water - 200w, heater

200w aquarium water - 200w, heater

£9.89 · Buy It Now

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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£31.40 · Buy It Now

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100w aquarium heater led - 100w,

100w aquarium heater led - 100w,

£11.95 · Buy It Now

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Interpet delta therm - interpet,

Interpet delta therm - interpet,

£10.79 · Buy It Now

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Fish tank heater - tank,

Fish tank heater - tank,

£11.95 · Buy It Now

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Aquarium heater rod - aquarium,

Aquarium heater rod - aquarium,

£7.61 · Buy It Now

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200 300 500w - 200/300/500w, digital

200 300 500w - 200/300/500w, digital

£15.61 · Buy It Now

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Fluval pre set - pre-set, p10

Fluval pre set - pre-set, p10

£18.40 · Buy It Now

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100w aquarium heater - 100w,

100w aquarium heater - 100w,

£14.99 · Buy It Now

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Fluval p10 submersible - p10,

Fluval p10 submersible - p10,

£15.00 · Buy It Now

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200w aquarium water - aquarium,

200w aquarium water - aquarium,

£9.89 · Buy It Now

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100 200w aquarium - 50/100/200w, water

100 200w aquarium - 50/100/200w, water

£12.15 · Buy It Now

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Neulriscn aquarium heater - neulriscn,

Neulriscn aquarium heater - neulriscn,

£31.99 · Buy It Now

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Fluval m300 300w aquarium - fluval,

Fluval m300 300w aquarium - fluval,

£29.82 · Buy It Now

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Juwel automatic heater - juwel,

Juwel automatic heater - juwel,

£30.99 · Buy It Now

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Kit submersible aquarium eco - submersible,

Kit submersible aquarium eco - submersible,

£9.12 · Buy It Now

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Aqua one glass aquarium - aqua,

Aqua one glass aquarium - aqua,

£19.99 · Buy It Now

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50w 100w aquarium marine - aquarium, fish

50w 100w aquarium marine - aquarium, fish

£8.30 · Buy It Now

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Hygger hg163 aquarium fish - hygger,

Hygger hg163 aquarium fish - hygger,

£29.99 · Buy It Now

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Aquarium fish tank heater - aquarium,

Aquarium fish tank heater - aquarium,

£5.99 · Buy It Now

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Aqqa aquarium heater 500w ptc - aqqa, heater,500w

Aqqa aquarium heater 500w ptc - aqqa, heater,500w

£55.99 · Buy It Now

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50w aquarium fish tank - 50w,

50w aquarium fish tank - 50w,

£10.29 · Buy It Now

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Hygger aquarium heater 800w - aquarium,

Hygger aquarium heater 800w - aquarium,

£25.00 · Buy It Now

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Aquarium marine fish tank - marine,

Aquarium marine fish tank - marine,

£8.00 · Buy It Now

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Aquarium heater fish - heater,

Aquarium heater fish - heater,

£5.56 · Buy It Now

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Aqua one 150w glass - aqua, heater

Aqua one 150w glass - aqua, heater

£8.65 · Buy It Now

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Superfish eco aquarium - superfish,

Superfish eco aquarium - superfish,

£14.99 · Buy It Now

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Superfish aquarium heater - superfish,

Superfish aquarium heater - superfish,

£13.95 · Buy It Now

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Superfish digital smart - superfish, heater

Superfish digital smart - superfish, heater

£18.99 · Buy It Now

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100 200w aquarium water - aquarium,

100 200w aquarium water - aquarium,

£10.58 · Buy It Now

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Wavereef heater 1000w 500w - 2, x

Wavereef heater 1000w 500w - 2, x

£125.99 · Buy It Now

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Juwel aqua heat aquarium - juwel,

Juwel aqua heat aquarium - juwel,

£33.99 · Buy It Now

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Fluval heater thermostat lcd - fluval, e

Fluval heater thermostat lcd - fluval, e

£47.49 · Buy It Now

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Usb mini aquarium fish tank - aquarium,

Usb mini aquarium fish tank - aquarium,

£6.95 · Buy It Now

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100w aquarium marine - aquarium,

100w aquarium marine - aquarium,

£7.60 · Buy It Now

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Aquael plastic ultra day night - aquael,

Aquael plastic ultra day night - aquael,

£37.95 · Buy It Now

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Kit silver aquarium - silver,

Kit silver aquarium - silver,

£10.59 · Buy It Now

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Simply aquarium titanium - simply,

Simply aquarium titanium - simply,

£29.95 · Buy It Now

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Betta thermal compact heater - thermal,

Betta thermal compact heater - thermal,

£13.99 · Buy It Now

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Aquarium heater aqua one - aquarium,

Aquarium heater aqua one - aquarium,

£13.72 · Buy It Now

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Hobby aquarium heater - hobby,

Hobby aquarium heater - hobby,

£6.80 · Buy It Now

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Betta choice premium digital - premium,

Betta choice premium digital - premium,

£20.89 · Buy It Now

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Aquarium heater led digital - aquarium,

Aquarium heater led digital - aquarium,

£11.92 · Buy It Now

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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£10.95 · Buy It Now

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200w fish tank - tank, heater

200w fish tank - tank, heater

£10.01 · Buy It Now

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Superfish pro aquarium - aquarium, heater

Superfish pro aquarium - aquarium, heater

£15.95 · Buy It Now

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Aquarium marine fish tank - fish,

Aquarium marine fish tank - fish,

£8.20 · Buy It Now

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200 300 500w led - led, digital

200 300 500w led - led, digital

£17.04 · Buy It Now

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Brons hw100 100 watt - hw100,

Brons hw100 100 watt - hw100,

£5.45 · Buy It Now

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Hagen marina submersible - hagen,

Hagen marina submersible - hagen,

£14.95 · Buy It Now

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Aquarium tropical marine - aquarium,

Aquarium tropical marine - aquarium,

£13.99 · Buy It Now

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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£10.75 · Buy It Now

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Aquarium fish tank - tank, heater

Aquarium fish tank - tank, heater

£5.19 · Buy It Now

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200 300 500w - 200/300/500w, led

200 300 500w - 200/300/500w, led

£17.20 · Buy It Now

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500w aquarium heater - 500w,

500w aquarium heater - 500w,

£17.95 · Buy It Now

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📊96 listings · from £4.79 · avg £17.02

Browse 96 fish tank heaters listings currently in our index. Prices range from £4.79 to £125.99, with an average of £17.02. 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 fish tank heaters →

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Everything you need to know about fish tank heaters

Whether you are looking for a brand-new or second-hand fish tank heaters, 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 £4.79, while premium listings can reach £125.99 — giving you a wide budget spread to work with. The average price of £17.02 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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