Fish tank heaters
Fish tank heaters for sale on Ireland's largest auction and classifieds sites
Hepo aquarium heater fish tank - aquarium, - £12.99
Aquariums 500 litres • Model suitable use • Hepo 608 range - Free postage - New and Used
Aquariums 500 litres • Model suitable use • Hepo 608 range - Free postage - New and Used
Hidom submersible tropical - hidom, - £13.95
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
Hepo submersible aquarium fish - hepo, - £13.49
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
200 300 500w led - 200/300/500w, digital - £17.77
Fish tank aquarium • Heating rod fresh • Sea water can - Free postage - New and Used
Fish tank aquarium • Heating rod fresh • Sea water can - Free postage - New and Used
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Hidom proheat quartz - hidom, - £18.45
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
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48 listings · from £4.6 · avg £18.23
Browse 48 fish tank heaters listings currently in our index. Prices range from £4.6 to £81.99, with an average of £18.23. 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 →
100 200w aquarium water heater - aquarium, - £10.98
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Interpet deltatherm - eu, - £9.95
Interpet deltatherm aquarium • Fish tank heater • Delta mini 15w - Free postage - New and Used
Interpet deltatherm aquarium • Fish tank heater • Delta mini 15w - Free postage - New and Used
Aquarium water heater aqua - water, - £12.15
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Aquarium water heater - heater, aqua - £11.99
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Aquarium heater submersible - heater, - £11.99
Preset heater set • Degrees appropriate most • Tropical fish shrimp - Free postage - New and Used
Preset heater set • Degrees appropriate most • Tropical fish shrimp - Free postage - New and Used
Usb mini aquarium fish - aquarium, tank - £8.95
Piece fish tank • Heater rod mini • More beautiful usb - Free postage - New and Used
Piece fish tank • Heater rod mini • More beautiful usb - Free postage - New and Used
Hygger submersible aquarium - hygger, - £38.77
Rapid heating accumulation • Aquarium heater shell • Hale lines mechanical - Free postage - New and Used
Rapid heating accumulation • Aquarium heater shell • Hale lines mechanical - Free postage - New and Used
Stainless steel aquarium - stainless, - £10.99
Aquariums between 20l • 500l 50w 100w • 200w 300w 500w - Free postage - New and Used
Aquariums between 20l • 500l 50w 100w • 200w 300w 500w - Free postage - New and Used
50w 500w led digital aquarium - led, - £14.12
Power 50w 100w • 200w 300w 500w • Fish tank aquarium - Free postage - New and Used
Power 50w 100w • 200w 300w 500w • Fish tank aquarium - Free postage - New and Used
Hidom proheat quartz aquarium - hidom, - £18.45
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
50w 500w led - led, digital - £17.80
Power 50w 100w • 200w 300w 500w • Fish tank aquarium - Free postage - New and Used
Power 50w 100w • 200w 300w 500w • Fish tank aquarium - Free postage - New and Used
Aquarium heater fish tank - aquarium, - £8.55
25w 20.5cm 8in • 26.5 4cm 10.4 • 2.76 1.57in can - Free postage - New and Used
25w 20.5cm 8in • 26.5 4cm 10.4 • 2.76 1.57in can - Free postage - New and Used
Usb mini aquarium heater 10w - usb, | - £4.60
Two heating rods • Product power 10w • Can used one - Free postage - New and Used
Two heating rods • Product power 10w • Can used one - Free postage - New and Used
New submersible aquarium eco - aquarium, - £10.27
Power indicator ensures • Safe operation can • Ensure output heat - Free postage - New and Used
Power indicator ensures • Safe operation can • Ensure output heat - Free postage - New and Used
500w aquarium heater - aquarium, - £25.25
Powerful aquarium heaters • Heater can easily • Heat 400l water - Free postage - New and Used
Powerful aquarium heaters • Heater can easily • Heat 400l water - Free postage - New and Used
100 200w aquarium water - 50/100/200w, - £12.15
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Dual heating wires • Ensures uniform stable • Energy efficiency long - Free postage - New and Used
Hidom aquarium heater - aquarium, - £11.95
Aquarium heater multiple • Sizes 25w 300w • 50w 75w 100w - Free postage - New and Used
Aquarium heater multiple • Sizes 25w 300w • 50w 75w 100w - Free postage - New and Used
Submersible aquarium tropical - submersible, - £24.99
Say farewell chilly • Waters hello toasty • Haven 300w suitable - Free postage - New and Used
Say farewell chilly • Waters hello toasty • Haven 300w suitable - Free postage - New and Used
Hidom submersible tropical - hidom, - £11.45
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
Resun 50w glass tropical - resun, fish - £8.12
50w glass resun • Aquarium reptile heater • New boxed suckers - Free postage - New and Used
50w glass resun • Aquarium reptile heater • New boxed suckers - Free postage - New and Used
Fluval aquarium heater - t, - £26.99
Suitable aquariums 300l • Available five sizes • These heaters cater - Free postage - New and Used
Suitable aquariums 300l • Available five sizes • These heaters cater - Free postage - New and Used
Superfish aquarium heater - superfish, - £13.95
Superfish eco heater • 100 watts 21cm • 125 35cm - Free postage - New and Used
Superfish eco heater • 100 watts 21cm • 125 35cm - Free postage - New and Used
10w usb mini - 10w, - £4.61
Two heating rods • Can used • Both fish turtles - Free postage - New and Used
Two heating rods • Can used • Both fish turtles - Free postage - New and Used
300w aquarium fish tank heater - 300w, - £13.49
You are purchasing • High quality 300w • Use aquarium 300 - Free postage - New and Used
You are purchasing • High quality 300w • Use aquarium 300 - Free postage - New and Used
Aquarium fish tank heater - aquarium, - £15.48
Fish tank aquarium • Heating rod fresh • Sea water can - Free postage - New and Used
Fish tank aquarium • Heating rod fresh • Sea water can - Free postage - New and Used
Small aquarium heater - aquarium, 50w - £10.45
25w 50w 75w • 100w aquarium heaters • Fish tanks multiple - Free postage - New and Used
25w 50w 75w • 100w aquarium heaters • Fish tanks multiple - Free postage - New and Used
Aquarium fish tank heater - aquarium, - £5.99
Accommodate most heaters • Universal aquarium heater • From 25w 300w - Free postage - New and Used
Accommodate most heaters • Universal aquarium heater • From 25w 300w - Free postage - New and Used
Hidom quartz submersible - hidom, - £11.45
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
Hidom proheat series • Quartz glass aquarium • Heater has been - Free postage - New and Used
Aquael plastic ultra heater - aquael, - £32.49
Ultra heater advanced • Unbreakable plastic housing • Makes ideal tanks - Free postage - New and Used
Ultra heater advanced • Unbreakable plastic housing • Makes ideal tanks - Free postage - New and Used
Juwel aqua heat - aqua, aquarium - £29.85
Juwel heater safely • Reliably ensures correct • Temperature your aquarium - Free postage - New and Used
Juwel heater safely • Reliably ensures correct • Temperature your aquarium - Free postage - New and Used
Fish fun heater thermostat - fish, - £9.99
Ensure your aquatic • Friends stay happy • Healthy fish fun - Free postage - New and Used
Ensure your aquatic • Friends stay happy • Healthy fish fun - Free postage - New and Used
Titanium heater elitech - titanium, - £81.99
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Aquarium heater submersible - heater, - £10.95
Sizes available 25w • 50w 75w 100w • 150w 200w 250w - Free postage - New and Used
Sizes available 25w • 50w 75w 100w • 150w 200w 250w - Free postage - New and Used
Hidom submersible heater - submersible, - £12.95
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
These quality heaters • Are easy adjust • Will regulate temperature - Free postage - New and Used
Superfish pro aquarium heater - superfish, - £15.95
Superfish aquarium pro • Heatersizes available 50w • 100w 200w 300w - Free postage - New and Used
Superfish aquarium pro • Heatersizes available 50w • 100w 200w 300w - Free postage - New and Used
Submersible aquarium heater - aquarium, - £9.48
Usage place heater • Bar vertically horizontally • Aquarium make indicator - Free postage - New and Used
Usage place heater • Bar vertically horizontally • Aquarium make indicator - Free postage - New and Used
Aqua one glass aquarium - one, - £19.99
Aqua one glass • Available range sizes • Aquarium heater suit - Free postage - New and Used
Aqua one glass • Available range sizes • Aquarium heater suit - Free postage - New and Used
Fluval heater thermostat - fluval, lcd - £44.95
Fluval series electronic • Fish tank heaters • 50w aquariums 60l - Free postage - New and Used
Fluval series electronic • Fish tank heaters • 50w aquariums 60l - Free postage - New and Used
Swell 100w aquarium fish tank - aquarium, - £10.99
This swell heater • 100w easy install • Once you plug - Free postage - New and Used
This swell heater • 100w easy install • Once you plug - Free postage - New and Used
Hygger submersible aquarium - hygger, - £46.91
Rapid heating accumulation • Aquarium heater shell • Hale lines mechanical - Free postage - New and Used
Rapid heating accumulation • Aquarium heater shell • Hale lines mechanical - Free postage - New and Used
Hygger submersible aquarium - submersible, - £32.99
800w high power • Suitable large tanks • 302 383l powerful800w - Free postage - New and Used
800w high power • Suitable large tanks • 302 383l powerful800w - Free postage - New and Used
External heater thermostat for - thermostat, - £34.99
This heater can • Only connected external • Canister filter outlet - Free postage - New and Used
This heater can • Only connected external • Canister filter outlet - Free postage - New and Used
Submersible aquarium fish tank - aquarium, - £17.95
Suitable any fresh • Water aquarium not • Tanks heater length - Free postage - New and Used
Suitable any fresh • Water aquarium not • Tanks heater length - Free postage - New and Used
Try this: large fish tanks | aquarium cabinets | fish tank decorations | fluval aquariums | glass tanks | lava rock | betta fish tanks | aquarium equipment | saltwater tank | freshwater tropical fish
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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 48 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 £4.6, while premium listings can reach £81.99 — giving you a wide budget spread to work with. The average price of £18.23 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.