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    • Aquarium Heaters & Chillers

    Aquarium Heaters & Chillers

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    Best selling

    See all- Best selling
    • Hidom 300W Submersible Aquarium Fish Tank Shockproof Thermostat Heater - Black/Transparent
      Hidom 300W Submersible Aquarium Fish Tank Shockproof Thermostat Heater - Black/Transparent
      4.6 out of 5 stars (18)Total ratings 18
      £13.95 New
    • Aquael Comfort Zone Gold, 500W
      Aquael Comfort Zone Gold, 500W
      £48.95 New
    • EHEIM Thermostat 150w Fish Tanks Aquarium Heater - 3616110
      EHEIM Thermostat 150w Fish Tanks Aquarium Heater - 3616110
      4.6 out of 5 stars (12)Total ratings 12
      £21.90 New
      £15.00 Used
    • EHEIM 3619110 300W Aquarium Thermostat Heater
      EHEIM 3619110 300W Aquarium Thermostat Heater
      4.8 out of 5 stars (24)Total ratings 24
      £27.90 New
      £25.85 Used
    • EHEIM Thermostat 75W Fish Tanks Aquarium Submersible Heater
      EHEIM Thermostat 75W Fish Tanks Aquarium Submersible Heater
      5 out of 5 stars (4)Total ratings 4
      £19.90 New
    • Eheim Aquarium Thermostat Heater - 100W
      Eheim Aquarium Thermostat Heater - 100W
      4.8 out of 5 stars (5)Total ratings 5
      £21.90 New
    • Hidom HT2100 100W Aquarium Submersible Heater
      Hidom HT2100 100W Aquarium Submersible Heater
      4.7 out of 5 stars (22)Total ratings 22
      £11.95 New
    • Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      4.8 out of 5 stars (45)Total ratings 45
      £46.49 New
      £15.00 Used
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    2,810 results

      • biOrb
      • EHEIM
      • Fluval
      • Interpet
      • Juwel
      • Marina
      • Unbranded
      • Cooling Fan
      • Inline Chiller
      • Inline Heater
      • Submersible Heater
      • All listings filter applied
    • 50W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT EH-50
      SPONSORED

      50W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT EH-50

      £8.50
      Click & Collect
      453 sold
    • Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)
      SPONSORED

      Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)

      4.5 out of 5 stars (18)18 product ratings - Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)
      £2.45 to £13.95
      2,298 sold
    • Hepo Submersible Aquarium Fish Tank Tropical Heater Thermostat HP-605 25 to 300w
      SPONSORED

      Hepo Submersible Aquarium Fish Tank Tropical Heater Thermostat HP-605 25 to 300w

      £9.99 to £13.49
      Click & Collect
      999 sold
    • Submersible Fish Tank Aquarium Heater Thermostat Thermometer 25W upto 500W
      SPONSORED

      Submersible Fish Tank Aquarium Heater Thermostat Thermometer 25W upto 500W

      £9.79 to £16.99
      Click & Collect
      Free postage
    • Aquarium Heater 100/300/500W With LED Digital Temperature Controller, Fish Tank

      Aquarium Heater 100/300/500W With LED Digital Temperature Controller, Fish Tank

      £19.99
      Click & Collect
      Free postage
    • TROPICAL ECO AQUARIUM FISH TANK HEATER SUBMERSIBLE STAT 25W 50W 100W 200W 300W

      TROPICAL ECO AQUARIUM FISH TANK HEATER SUBMERSIBLE STAT 25W 50W 100W 200W 300W

      £11.29
      Click & Collect
      1,140 sold
    • Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w

      Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w

      5 out of 5 stars (29)29 product ratings - Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w
      £11.45 to £18.45
      Click & Collect
      1,441 sold
    • Aquarium Fish Tank Cooling Fans Tropical / Marine - 12v - 2,4 or 6 fans - BOYU

      Aquarium Fish Tank Cooling Fans Tropical / Marine - 12v - 2,4 or 6 fans - BOYU

      £19.99 to £36.99
      Click & Collect
    • 2 X AQUARIUM HEATER CLIPS And SUCKERS Suction Cups For Fish Tank Thermostat UK

      2 X AQUARIUM HEATER CLIPS And SUCKERS Suction Cups For Fish Tank Thermostat UK

      £2.65
      Free postage
    • Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater

      Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater

      5 out of 5 stars (18)18 product ratings - Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater
      £10.99 to £14.29
      Click & Collect
    • EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK

      EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK

      5 out of 5 stars (24)24 product ratings - EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK
      £18.35 to £27.90
      Click & Collect
      1,004 sold
    • Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      £19.29
      508 sold
    • Aquarium Fish Tank Heater Guard with Suction Cups Fits 25w to 300w

      Aquarium Fish Tank Heater Guard with Suction Cups Fits 25w to 300w

      £5.39
      Click & Collect
      1,119 sold
    • Aquarium Water Heater Tropical / Marine Fish Tank Submersible Adjustable Temp
      SPONSORED

      Aquarium Water Heater Tropical / Marine Fish Tank Submersible Adjustable Temp

      £8.49 to £10.99
      Click & Collect
      Free postage
    • Aquarium Heater Submersible Tropical Fish Tank Heating Reliable 25w-300w
      SPONSORED

      Aquarium Heater Submersible Tropical Fish Tank Heating Reliable 25w-300w

      £9.95 to £13.95
      Click & Collect
      123 sold
    • FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300
      SPONSORED

      FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300

      5 out of 5 stars (45)45 product ratings - FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300
      £40.49 to £46.49
      Click & Collect
    • Aqua Medic Titanium Heater 300 W Marine heater with nicrew digital controller

      Aqua Medic Titanium Heater 300 W Marine heater with nicrew digital controller

      4 out of 5 stars (3)3 product ratings - Aqua Medic Titanium Heater 300 W Marine heater with nicrew digital controller
      £49.99
      0 bids
      £4.45 postage
      Ending Today at 8:04PM BST3m 29s
      or Best Offer
    • Fluval E Series 50w 100w 200w 300w Aquarium Heater

      Fluval E Series 50w 100w 200w 300w Aquarium Heater

      £35.99 to £37.49
      Click & Collect
    • Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER

      Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER

      4.5 out of 5 stars (22)22 product ratings - Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER
      £11.45 to £14.49
      Click & Collect
      1,367 sold
    • Mini Aquarium Fish Tank Heater USB Heating Rod Thermostat Heater Submersible UK

      Mini Aquarium Fish Tank Heater USB Heating Rod Thermostat Heater Submersible UK

      £11.86
      or Best Offer
    • Betta Premium Digital Aquarium LED Submersible Water Heater Fish Tank Thermostat

      Betta Premium Digital Aquarium LED Submersible Water Heater Fish Tank Thermostat

      £15.65 to £19.22
      Click & Collect
      Free postage
    • 300w fish tank heater.submersible

      300w fish tank heater.submersible

      £9.99
      Click & Collect
    • Mini LED Clip-On Light For Aquarium/Fish Bowl, Excellent Condition (See Photos)

      Mini LED Clip-On Light For Aquarium/Fish Bowl, Excellent Condition (See Photos)

      £1.00
      1 bid
      £3.35 postage
      Ending Today at 11:29PM BST3h 28m
    • 300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP

      300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP

      4 out of 5 stars (8)8 product ratings - 300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP
      £10.95
      Click & Collect
      606 sold
    • Betta Heater Compact Thermostat 200W New Aquarium Aquatic

      Betta Heater Compact Thermostat 200W New Aquarium Aquatic

      £0.99
      0 bids
      £4.35 postage
      Ending 24 May at 6:12PM BST6d 22h
    • Fish tank Underwater Filter And Heater

      Fish tank Underwater Filter And Heater

      £0.99
      1 bid
      £4.45 postage
      Ending Friday at 7:43PM BST2d 23h
    • Digital LED Aquarium Water Heater Submersible Fish Tank Thermostat Heating Rod

      Digital LED Aquarium Water Heater Submersible Fish Tank Thermostat Heating Rod

      £19.99 to £24.99
      Click & Collect
      Free postage
    • LED Digital Submersible Aquarium Water Heater Fish Tank Thermostat 200/300/500W

      LED Digital Submersible Aquarium Water Heater Fish Tank Thermostat 200/300/500W

      £19.99 to £24.99
      Click & Collect
      Free postage
    •   fish tank  aquarium heater 300w,submersible&thermostat easy adjust
      SPONSORED

      fish tank aquarium heater 300w,submersible&thermostat easy adjust

      £9.99
      Click & Collect
    • Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat- UK PLUG
      SPONSORED

      Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat- UK PLUG

      £9.29 to £11.49
      Click & Collect
    • HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL
      SPONSORED

      HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL

      5 out of 5 stars (1)1 product ratings - HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL
      £10.50 to £15.95
      Click & Collect
    • Mini Temperature Aquarium Thermostat Submersible Fish Tank Heater Quartz Glass
      SPONSORED

      Mini Temperature Aquarium Thermostat Submersible Fish Tank Heater Quartz Glass

      £7.99 to £12.99
      Click & Collect
      Free postage
    • AQUAEL PLATINUM SUBMERSIBLE  HEATER THERMOSTAT FOR AQUARIUM FISH TANK HEATING

      AQUAEL PLATINUM SUBMERSIBLE HEATER THERMOSTAT FOR AQUARIUM FISH TANK HEATING

      £6.64 to £26.45
      Click & Collect
      15 sold
    • Large Portion of Duckweed

      Large Portion of Duckweed

      £4.00
      Free postage
      119 sold
    • Aquael Ultra Heater for Aquariums One Touch 25W 50W 75W 100W 150W

      Aquael Ultra Heater for Aquariums One Touch 25W 50W 75W 100W 150W

      £10.95
      0 bids
      £4.95 postage
      Ending Wednesday at 8:00PM BST23h 59m
    • Resun Aquarium Thermostat Heater

      Resun Aquarium Thermostat Heater

      £5.00
      1 bid
      Free postage
      Ending 26 May at 11:26AM BST8d 15hClick & Collect
    • OASE BIORB AQUARIUM HEATER STAND KIT SECURE FIX BRACKET FISH TANK ACRYLIC GLASS

      OASE BIORB AQUARIUM HEATER STAND KIT SECURE FIX BRACKET FISH TANK ACRYLIC GLASS

      4 out of 5 stars (19)19 product ratings - OASE BIORB AQUARIUM HEATER STAND KIT SECURE FIX BRACKET FISH TANK ACRYLIC GLASS
      £7.89
      Click & Collect
      385 sold
    • HITOP 25W Super Accurate Aquarium Heater, Mini Preset Heater

      HITOP 25W Super Accurate Aquarium Heater, Mini Preset Heater

      £6.99
      Click & Collect
      or Best Offer
    • Aquarium Heater Fish Tank Water Heater 100w/200w/300w JRB Series
      SPONSORED

      Aquarium Heater Fish Tank Water Heater 100w/200w/300w JRB Series

      £8.99 to £9.99
      Click & Collect
      Free postage
    • 110V-240V Aquarium Fish Tank Transparent Cooling Fan Fish Tank Cooler 5W/10W
      SPONSORED

      110V-240V Aquarium Fish Tank Transparent Cooling Fan Fish Tank Cooler 5W/10W

      £43.67 to £54.54
      Free postage
    • VEVOR 70W Aquarium Chiller with pump

      VEVOR 70W Aquarium Chiller with pump

      £10.50
      4 bids
      £6.95 postage
      Ending Friday at 4:16PM BST2d 20h
    • Eheim Jager Heater

      Eheim Jager Heater

      £5.00
      0 bids
      £4.99 postage
      Ending 24 May at 3:15PM BST6d 19h
      or Best Offer
    • Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      £15.99
      Click & Collect
      201 sold
    • Tetra Fish Tank Heater

      Tetra Fish Tank Heater

      £6.50
      2 bids
      £2.94 postage
      Ending Friday at 7:55PM BST2d 23hClick & Collect
    • Aquael Plastic Ultra Heater 15-200W Tropical Aquarium Heating Thermostat Fish

      Aquael Plastic Ultra Heater 15-200W Tropical Aquarium Heating Thermostat Fish

      5 out of 5 stars (3)3 product ratings - Aquael Plastic Ultra Heater 15-200W Tropical Aquarium Heating Thermostat Fish
      £27.99 to £37.95
      Click & Collect
      210 sold
    • INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL

      INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL

      4 out of 5 stars (8)8 product ratings - INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL
      £20.99 to £22.99
      Click & Collect
      1,211 sold
    • 2 x Replacement Aquarium Heater Suction Cups Clips Suckers Fish Tank Thermostat

      2 x Replacement Aquarium Heater Suction Cups Clips Suckers Fish Tank Thermostat

      £2.79
      Free postage
    • Interpet Aquatherm Aquarium Heater 25w 50w 100w 150w 200w 300w Fish Tank

      Interpet Aquatherm Aquarium Heater 25w 50w 100w 150w 200w 300w Fish Tank

      £1.95 to £15.95

    Results pagination - page 1

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    Highest-rated products

    See all- Highest-rated products
    • Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      4.8 out of 5 stars (45)Total ratings 45
      100% agree - Would recommend
      £46.49 New
      £15.00 Used
    • Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      4.8 out of 5 stars (29)Total ratings 29
      100% agree - Would recommend
      £17.99 New
    • Hobby Universal Twin Heater Holder Aquarium Fish Tank
      Hobby Universal Twin Heater Holder Aquarium Fish Tank
      4.8 out of 5 stars (27)Total ratings 27
      100% agree - Would recommend
      £6.25 New
    • EHEIM 3619110 300W Aquarium Thermostat Heater
      EHEIM 3619110 300W Aquarium Thermostat Heater
      4.8 out of 5 stars (24)Total ratings 24
      88% agree - Would recommend
      £27.90 New
      £25.85 Used
    • Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini
      Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini
      4.8 out of 5 stars (24)Total ratings 24
      89% agree - Would recommend
      £21.95 New
    • Fluval Biolife Fish Tank Filter Suckers Suction Cups X 4 A15041 Aquarium Replace
      Fluval Biolife Fish Tank Filter Suckers Suction Cups X 4 A15041 Aquarium Replace
      4.9 out of 5 stars (23)Total ratings 23
      100% agree - Would recommend
      £5.49 New
    • Hidom HT-8100 100W Aquarium Heater
      Hidom HT-8100 100W Aquarium Heater
      5 out of 5 stars (20)Total ratings 20
      100% agree - Would recommend
      £12.49 New
    • Hidom Pro Heat HT 8200 200W Quartz Glass Submersible Fish Tank Thermostat Heater
      Hidom Pro Heat HT 8200 200W Quartz Glass Submersible Fish Tank Thermostat Heater
      4.9 out of 5 stars (19)Total ratings 19
      100% agree - Good value
      £14.45 New

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