Aquarium Heaters & Chillers

5,238 results

Hailea Nutrient Reservoir Chiller HC-150A - 50-400L Tank Chiller 1200L/Hr
Brand new
£299.99
Free postage
Click & Collect
Hepo Submersible Aquarium Fish Tank Tropical Heater Thermostat HP-605 25 to 300w
Brand new
£9.99 to £13.49
Free postage
Click & Collect
513 sold
70W 20L Small Fish Tank Water Heater & Chiller Aquarium Chiller Semiconductor UK
Brand new · Unbranded
£66.90
or Best Offer
Free postage
3 watching
Hidom Quartz Submersible Aquarium Fish Tank Heater Submersible with Thermometer
Brand new
£11.45 to £18.45
Free postage
Click & Collect
135 sold
Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)
Now in 7 sizes: 25w, 50w, 75w, 100w, 150w, 200w, 300w
Brand new
£2.45 to £13.95
Free postage
538 sold
Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat - UK
Brand new · Unbranded
£7.00 to £10.00
£2.99 P&P
Click & Collect
Submersible Aquarium Fish Tank Tropical Heater Thermostat 25 to 300w 6 Sizes UK
Brand new · Unbranded
£4.99 to £8.79
Free postage
50-200W Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible
Brand new · Unbranded
£9.45
Free postage
Hidom Aquarium Heater Submersible Tropical Fish Tank Heating + FREE THERMOMETER
Brand new · Hidom
(31)
£9.65 to £13.45
Free postage
Click & Collect
1,854 sold
Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w
Brand new · Hidom
(22)
£11.45 to £18.45
Free postage
Click & Collect
1,078 sold
LCD Display Aquarium Water Cooler Warmer Electric Water Chiller Cooling System
Brand new
£54.91
or Best Offer
Free postage
Only 2 left
Fish R Fun Heater Thermostat Submersible Tropical Aquarium Fish Tank
Brand new · Fish R Fun
(5)
£8.55 to £11.50
Free postage
Click & Collect
323 sold
Fluval T Series Aquarium Heater Submersible 50 - 300L - CUSTOMER RETURN
Refurbished · Fluval
(2)
£17.99 to £18.99
Free postage
Click & Collect
3 watching
Inline Aquarium Heater External Filter Thermostat Fish Tank Digital 300W 500W
Brand new · Unbranded
£33.98
Free postage
Click & Collect
300w Aquarium Fish Tank Heater Submersible Thermostat for Tropical Tank
Brand new
£13.49
Free postage
Click & Collect
1,494 sold
200-500W LED Digital Submersible Aquarium Water Heater Fish Tank Thermostat Rod
Brand new · Unbranded
£13.55 to £17.49
Free postage
Click & Collect
62 sold
Aquarium Heater Submersible Preset Heater For Tropical Aquariums Compact Heater
Brand new
£11.99 to £15.99
(£15.99/Unit)
Free postage
Click & Collect
57 sold
200/300/500W LED Digital Submersible Aquarium Water Heater Fish Tank Thermostat
Brand new · Unbranded
£13.69 to £15.95
Free postage
Click & Collect
26 sold
Fluval T Aquarium Heater Electronic Accurate 50 - 300L Submersible Fish Tank
Brand new · Fluval
(2)
£25.65 to £29.49
Free postage
Click & Collect
78 sold
JBL Pro Temp Coolers X Cooling Fans x200 x300 Controller Aquarium Fish Tank
Brand new · JBL
(2)
£43.95
Free postage
Click & Collect
55 sold
EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK
Brand new · EHEIM
(24)
£21.49 to £29.99
Free postage
Click & Collect
1,267 sold
FLUVAL T AQUARIUM HEATER ELECTRONIC SUBMERSIBLE FISH TANK ACCURATE 50-300 WAT
Brand new · Fluval
(2)
£24.99 to £28.49
Free postage
Click & Collect
FLUVAL E HEATER THERMOSTAT LCD DISPLAY ELECTRONIC AQUARIUM HEAT WATER FISH TANK
Brand new · Fluval
(50)
£39.99 to £47.99
Free postage
Click & Collect
3,155 sold
Mini Small Aquarium Fish Tank Heater 26 ℃ Heating Rod Submersible Thermostat UK
Brand new · Unbranded
£6.85
Free postage
69 sold
Interpet EU Deltatherm Aquarium Heater Fish Tank Heating 2 Pin Plug Submersible
Brand new · Interpet
£7.95 to £10.95
Free postage
Click & Collect
90 sold
Eheim Heater And Pump
Pre-owned · EHEIM
£21.52
£2.94 P&P
5 Heads Aquarium Fish Tank Cooling Fans Tropical Chillers Water Cooler Marine
Brand new
£17.32 to £32.16
Free postage
Click & Collect
7 watching
Interpet Nano Stat Heater 10W/25W Aquarium Fish Tank Temperature Regulator
Brand new · Interpet
(14)
£14.45 to £16.45
Free postage
Click & Collect
42 sold
Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat + Thermometer
Brand new
£10.45 to £12.95
Free postage
Click & Collect
968 sold
Hepo Aquarium Heater Fish Tank Quartz Submersible Thermostat HP-608 25w to 500w
8 Sizes from 25w to 500w - Full UK Stock With Warranty
Brand new
£10.99 to £17.99
Free postage
Click & Collect
529 sold
12V Thermoelectric Cooler Water Chiller Cooling System 30L For Fish Tank 120W UK
Brand new · Unbranded
£41.98
Free postage
100W-500W LED Digital Aquarium Submersible Water Heater Fish Tank Thermostat Rod
Brand new · Unbranded
£13.55 to £17.49
Free postage
Aquarium Heater Pack 50W/100W with Stand & Thermometer for BiOrb Fish Tanks
Brand new · biOrb
£21.90 to £29.75
Free postage
Click & Collect
177 sold
Fluval T300 Aquarium Heater 300w - Digital Fish Tank Thermostat - 150-300 Litres
Brand new · Fluval
(2)
£27.99
Free postage
Click & Collect
115 sold
Aquarium Fish Tank Heater Guard with Suction Cups Fits 25w to 300w
Brand new
£5.99
Free postage
Click & Collect
1,760 sold
Mini Aquarium Heating Rod For Small Fish Tank Constant Temperature Heater~GB
Brand new · Unbranded
£6.03
or Best Offer
Free postage
D-D DC300 Aquarium Chiller
Pre-owned
£198.32
or Best Offer
£8.41 P&P
D-D TITANIUM HEATER ELITECH HEAT DIGITAL CONTROLLER MARINE FISH TANK STAT
Brand new
£11.99 to £79.99
Free postage
Click & Collect
15 watching
Hepo Infrared Heater Aquarium Fish Tank Tropical Submersible Thermostat 25-600w
Brand new
£29.99 to £33.99
Free postage
Click & Collect
Ocean Breeze Cooling Fans Aquarium Water Cooler Marine Tropical Fish Tank DE
Brand new · Unbranded
£28.04 to £60.80
Free postage
25W/50W/100W/300W Submersible Adjustable Water Heater For Aquarium Fish Tank
Brand new · Unbranded
£7.07 to £8.39
Free postage
Click & Collect
Aquarium Chiller Fish Tank Cooling Fan System Aquarium Chiller 1/2/3/4/5Heads UK
Brand new · Unbranded
£11.96 to £26.39
Free postage
Click & Collect
8 watching
JUWEL AQUA HEAT AQUARIUM TROPICAL HEATER 50W,100W,200W,300W RIO VISION FISH TANK
Brand new · Juwel
(8)
£27.50 to £31.99
Free postage
Click & Collect
645 sold
Aquarium Glass Heater Aqua One Submersible Thermostat with Double Insulation
Brand new
(1)
£13.85 to £18.29
Free postage
Click & Collect
15 sold
Adjustable Fish Tank Water Heater 25/50/100/200/300w Aquarium Heater Turtle UK
Brand new · Unbranded
£6.99 to £8.39
Free postage
Click & Collect
Aquael Plastic Ultra Safety Heater 25w - 200w Fish Tank Aquarium Thermostat
Brand new
(1)
£29.95 to £40.45
Free postage
Click & Collect
D-D Ocean Breeze Cooling Fans Aquarium Water Chiller Marine Tropical Fish Tank
Brand new
£49.99
Free postage
Click & Collect
D-D DUAL HEATING & COOLING CONTROLLER TEMPERATURE ALARM AQUARIUM FISH TANK
Brand new
£41.95
Free postage
Click & Collect
628 sold
50-200W Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible
Brand new · Unbranded
£9.99 to £10.99
Free postage
SuperFish ECO Heater 50w and 100w, Designed to fit small aquariums perfectly
Brand new · Superfish
£14.99
Free postage
Click & Collect
94 sold
Fluval E Heater 50w 100w 200w 300w Advanced Electronic Aquarium Fish Tank Thermo
Brand new · Fluval
£35.03
£2.94 P&P
Click & Collect
Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible 50-200W
Brand new · Unbranded
£8.99 to £9.49
Free postage
Click & Collect
HOBBY AQUARIUM HEATER THERMOSTAT HOLDER DOUBLE SUCTION CUP AQUARIUM FISH TANK
Brand new · Hobby
(31)
£6.80
Free postage
Click & Collect
1,094 sold
D-D Temprature Controller Marine Aquarium
Pre-owned · Unbranded
£26.72
£3.38 P&P
Simply Aquarium Titanium Heaters / Controller Durable High Quality Fish Tank
Brand new
£29.95 to £79.95
Free postage
Click & Collect
18 sold
Econoherm 50W Submersible Tropical Fish Tank Aquarium Heater & Thermostat 40L
Brand new
£3.83
(£3.83/Unit)
or Best Offer
£2.94 P&P
0 bids
1d 12h
Superfish Pro Heater Tropical Aquarium Thermal Shock Resistant Fish Tank Heating
Brand new · Superfish
£12.99 to £18.65
Free postage
Click & Collect
105 sold
Superfish Nano Eco Heater 50W Mini Aquarium Fish Tank Heater
Brand new · Superfish
(33)
£14.99
Free postage
Only 3 left
Fish Tank Aquarium Heater 150W
Brand new · Superfish
£17.36
£3.38 P&P
Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat - UK
Brand new · Unbranded
£9.99 to £12.99
Free postage
Click & Collect

Best selling

See all

Hidom HT-2025 Submersible Thermostat Heater for Aquariums - Black
(31)
£9.65 New
Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
(34)
£16.65 New
Fluval T Series Aquarium Heater 300w Fish Tank Accurate Thermostat 300 Litres
(2)
£26.99 New
biOrb 50W Watt Heater for Tropical Aquarium Fish Tank
(19)
£33.90 New
£31.92 Used
EHEIM 3619110 300W Aquarium Thermostat Heater
(24)
£27.49 New
£16.32 Used
Hidom HT-8100 100W Aquarium Heater
(23)
£12.95 New
Fluval T100 100W Fully Electronic Aquarium Heater - 14881
(2)
£26.79 New
SUPERFISH AQUARIUM HEATER 50w WATT TROPICAL FISH TANK SUBMERSIBLE THERMOSTAT
£14.95 New

Top-rated

See all

Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
(34)

100% agree - Would recommend
£16.65 New
Hidom HT-2025 Submersible Thermostat Heater for Aquariums - Black
(31)

96% agree - Would recommend
£9.65 New
Hobby Universal Twin Heater Holder Aquarium Fish Tank
(31)

100% agree - Would recommend
£2.22 New
Fluval E A773 Advanced Electronic Heater, 200 W
(29)

92% agree - Would recommend
£42.49 New
£21.52 Used
Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini
(26)

90% agree - Would recommend
£10.36 New
EHEIM 3619110 300W Aquarium Thermostat Heater
(24)

88% agree - Would recommend
£27.49 New
£16.32 Used
Hidom HT-8100 100W Aquarium Heater
(23)

100% agree - Would recommend
£12.95 New
D-D Dual Temperature Controller
(16)

100% agree - Would recommend
£42.26 New
£23.48 Used

Brand

Aquarium Heaters & Chillers

Shop by category

5,238 results

Hailea Nutrient Reservoir Chiller HC-150A - 50-400L Tank Chiller 1200L/Hr

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

70W 20L Small Fish Tank Water Heater & Chiller Aquarium Chiller Semiconductor UK

Hidom Quartz Submersible Aquarium Fish Tank Heater Submersible with Thermometer

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

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

Submersible Aquarium Fish Tank Tropical Heater Thermostat 25 to 300w 6 Sizes UK

50-200W Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible

Hidom Aquarium Heater Submersible Tropical Fish Tank Heating + FREE THERMOMETER

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

LCD Display Aquarium Water Cooler Warmer Electric Water Chiller Cooling System

Fish R Fun Heater Thermostat Submersible Tropical Aquarium Fish Tank

Fluval T Series Aquarium Heater Submersible 50 - 300L - CUSTOMER RETURN

Inline Aquarium Heater External Filter Thermostat Fish Tank Digital 300W 500W

300w Aquarium Fish Tank Heater Submersible Thermostat for Tropical Tank

200-500W LED Digital Submersible Aquarium Water Heater Fish Tank Thermostat Rod

Aquarium Heater Submersible Preset Heater For Tropical Aquariums Compact Heater

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

Fluval T Aquarium Heater Electronic Accurate 50 - 300L Submersible Fish Tank

JBL Pro Temp Coolers X Cooling Fans x200 x300 Controller Aquarium Fish Tank

EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK

FLUVAL T AQUARIUM HEATER ELECTRONIC SUBMERSIBLE FISH TANK ACCURATE 50-300 WAT

FLUVAL E HEATER THERMOSTAT LCD DISPLAY ELECTRONIC AQUARIUM HEAT WATER FISH TANK

Mini Small Aquarium Fish Tank Heater 26 ℃ Heating Rod Submersible Thermostat UK

Interpet EU Deltatherm Aquarium Heater Fish Tank Heating 2 Pin Plug Submersible

Eheim Heater And Pump

5 Heads Aquarium Fish Tank Cooling Fans Tropical Chillers Water Cooler Marine

Interpet Nano Stat Heater 10W/25W Aquarium Fish Tank Temperature Regulator

Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat + Thermometer

Hepo Aquarium Heater Fish Tank Quartz Submersible Thermostat HP-608 25w to 500w

12V Thermoelectric Cooler Water Chiller Cooling System 30L For Fish Tank 120W UK

100W-500W LED Digital Aquarium Submersible Water Heater Fish Tank Thermostat Rod

Aquarium Heater Pack 50W/100W with Stand & Thermometer for BiOrb Fish Tanks

Fluval T300 Aquarium Heater 300w - Digital Fish Tank Thermostat - 150-300 Litres

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

Mini Aquarium Heating Rod For Small Fish Tank Constant Temperature Heater~GB

D-D DC300 Aquarium Chiller

D-D TITANIUM HEATER ELITECH HEAT DIGITAL CONTROLLER MARINE FISH TANK STAT

Hepo Infrared Heater Aquarium Fish Tank Tropical Submersible Thermostat 25-600w

Ocean Breeze Cooling Fans Aquarium Water Cooler Marine Tropical Fish Tank DE

25W/50W/100W/300W Submersible Adjustable Water Heater For Aquarium Fish Tank

Aquarium Chiller Fish Tank Cooling Fan System Aquarium Chiller 1/2/3/4/5Heads UK

JUWEL AQUA HEAT AQUARIUM TROPICAL HEATER 50W,100W,200W,300W RIO VISION FISH TANK

Aquarium Glass Heater Aqua One Submersible Thermostat with Double Insulation

Adjustable Fish Tank Water Heater 25/50/100/200/300w Aquarium Heater Turtle UK

Aquael Plastic Ultra Safety Heater 25w - 200w Fish Tank Aquarium Thermostat

D-D Ocean Breeze Cooling Fans Aquarium Water Chiller Marine Tropical Fish Tank

D-D DUAL HEATING & COOLING CONTROLLER TEMPERATURE ALARM AQUARIUM FISH TANK

50-200W Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible

SuperFish ECO Heater 50w and 100w, Designed to fit small aquariums perfectly

Fluval E Heater 50w 100w 200w 300w Advanced Electronic Aquarium Fish Tank Thermo

Aquarium Water Heater Aqua Fish Tank Thermosafe LCD Digital Submersible 50-200W

HOBBY AQUARIUM HEATER THERMOSTAT HOLDER DOUBLE SUCTION CUP AQUARIUM FISH TANK

D-D Temprature Controller Marine Aquarium

Simply Aquarium Titanium Heaters / Controller Durable High Quality Fish Tank

Econoherm 50W Submersible Tropical Fish Tank Aquarium Heater & Thermostat 40L

Superfish Pro Heater Tropical Aquarium Thermal Shock Resistant Fish Tank Heating

Superfish Nano Eco Heater 50W Mini Aquarium Fish Tank Heater

Fish Tank Aquarium Heater 150W

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

Best selling

Hidom HT-2025 Submersible Thermostat Heater for Aquariums - Black

Hidom HT-8500 500W Submersible Aquarium Thermostat Heater

Fluval T Series Aquarium Heater 300w Fish Tank Accurate Thermostat 300 Litres

biOrb 50W Watt Heater for Tropical Aquarium Fish Tank

EHEIM 3619110 300W Aquarium Thermostat Heater

Hidom HT-8100 100W Aquarium Heater

Fluval T100 100W Fully Electronic Aquarium Heater - 14881

SUPERFISH AQUARIUM HEATER 50w WATT TROPICAL FISH TANK SUBMERSIBLE THERMOSTAT

Top-rated

Hidom HT-8500 500W Submersible Aquarium Thermostat Heater

Hidom HT-2025 Submersible Thermostat Heater for Aquariums - Black

Hobby Universal Twin Heater Holder Aquarium Fish Tank

Fluval E A773 Advanced Electronic Heater, 200 W

Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini

EHEIM 3619110 300W Aquarium Thermostat Heater

Hidom HT-8100 100W Aquarium Heater