Top 10 Best Cheap Aquarium Heater available in 2021

With our best cheap aquarium heater guide and item surveys, we’ll assist you with settling on a progressively educated choice and get an cheap aquarium heater with the advantages and features you need. It’s very much important to do your earlier research, so read our reviews and correlations with conclude which is generally appropriate for you.

Our team personally spent around 45 hours just to found the best cheap aquarium heater for you that you can truly fall in love. By doing thorough research, we have found out that Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons is the perfect fit for your needs which also comes with the features that you have never heard before. This is the best choice currently available in the market at the best price. However, if you don’t want to spend extra than you should go with the DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker. Here we also have the top 10 best cheap aquarium heater just for you.

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Best cheap aquarium heater

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Product Title
Score

FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer
9.9

Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
9.6

HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)
9.1

Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons
8.9

DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
8.5

DaToo Small Aquarium Heater 50W Mini Fish Tank Heater 50 Watt Submersible with LED Temperature Display
8.1

PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks
7.6

Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt
7.4

HiTauing Aquarium Heater, Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Advanced Temperature Control System, Suitable for Saltwater and Freshwater
7.1

Fluval E300 Advanced Electronic Heater, 300-Watt Heater for Aquariums up to 100 Gal., A774
6.5

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Product Title

FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer

9.9

Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

9.6

HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)

9.1

Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons

8.9

DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

8.5

DaToo Small Aquarium Heater 50W Mini Fish Tank Heater 50 Watt Submersible with LED Temperature Display

8.1

PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

7.6

Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt

7.4

HiTauing Aquarium Heater, Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Advanced Temperature Control System, Suitable for Saltwater and Freshwater

7.1

Fluval E300 Advanced Electronic Heater, 300-Watt Heater for Aquariums up to 100 Gal., A774

6.5

FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer


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FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer

$25.99
$16.99  in stock
1 new from $16.99
1 used from $15.63
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • ★【50 Watt Heater】: This Aquarium heater is suitable for 5 to 15 gallons aquariums, Length - 6.8 inch,voltage 110-120V, power cord is 4.0 ft, please choose the right wattage aquarium heater according to our size chart.
  • ★【Temperature range】: 63°F~95°F , It is very easy to adjust the temperature you need, we also deliberately give each customer a free diving thermometer, you can observe the water temperature of the fish tank at any time.
  • ★【Intelligent temperature control】:Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. Furthermore, Automatic safety shut-off feature, and overheating protection.
  • ★【Note】: 1. Aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,Please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. Heater rod is suitable for people over 16 years of age. Children or minors should be under adult guidance or supervision.
  • ★【SATISFACTION GUARANTEED】: Gain the confidence to go hard with us! Our Aquarium Heater is built with durability in mind and safety for every design, In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater


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Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

$23.99
$20.39  in stock
1 new from $20.39
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • ★300W aquarium heater is suitable for 40 to 55 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached

HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)


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HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)

$11.99  in stock
1 new from $11.99
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • HITOP 25W aquarium heater, length 7.2-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 10 gallon.
  • Thickened Glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes.
  • Adjustable and easy to use: This aquarium heater, adjustable temperature range 68 ~ 93 °F, after setting the temp you want, will on or shut off automatically when the water temperature changes, no extra adjustment is required.
  • Accurate Temperature Control: This fish tank heater built-in thermostat, will automatically keep the water at the set temperature within±2°F error. Comes with an sticker thermometer to detect water temp at any time.
  • Easier installation, you can install it with any angle by 2 powerful suction cups, just make sure it is under water fully. Besides, we provide 1 more extra suction cup for spare (total 3 PCS).We provide 12 months warranty.

Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons


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Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons

$8.99  in stock
8 new from $8.99
1 used from $7.99
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • Fully submersible in a compact size
  • Shatterproof and nearly indestructible
  • Ideal for desktop aquariums 2.5 to 5 gallons
  • Thermal safety shut-off

DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker


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DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

$10.79  in stock
1 new from $10.79
Free shipping
Buy Now
Amazon.com
as of September 25, 2021 1:40 pm

Features

  • 25W Betta Aquarium Heater -- Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish!
  • Precise And Constant Temperature -- No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78℉, the heater starts to heat and the red light is on. When the temperature reaches 78℉, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
  • The Smallest 25W Betta Heater -- For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. Very MINI!!
  • Safe And Durable -- Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
  • One Year Warranty & Satisfaction Guarantee -- This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!

DaToo Small Aquarium Heater 50W Mini Fish Tank Heater 50 Watt Submersible with LED Temperature Display


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DaToo Small Aquarium Heater 50W Mini Fish Tank Heater 50 Watt Submersible with LED Temperature Display

$13.99  in stock
1 new from $13.99
Free shipping
Buy Now
Amazon.com
as of September 25, 2021 1:40 pm

Features

  • DaToo 50W Small Aquarium Heater -- A warm water temperature can always bring happiness to the fish. They can freely play around in the water without worrying about the cold, which will make them healthier and more energetic. DaToo 50W aquarium heater, three-point temperature control system, sturdy and durable, real-time temperature display and external temperature adjustment, safe and easy to use, not only can easily create a warm underwater world for your fish, but also bring them happy.
  • Three-Point Temperature Control System -- DaToo creatively uses three temperature sensing points, which makes DaToo heater has more accurate and sensitive temperature. Accuracy is ±1℉. Automatic constant temperature, when the water temperature reaches the set temperature, the heater will automatically stop heating. When the water temperature is lower than the set temperature, the heater will automatically start heating. No need to worry about overheating.
  • Sturdy And Durable -- High strength ABS shell, no fear of any external force damage and chemical corrosion, high temperature resistant, longer service life. Thicker quartz glass, explosion-proof and crack-proof, safer and more durable, excellent heat transfer rate, which enables DaToo aquarium heaters to quickly fill every corner of your fish tank with warmth!
  • Convenient Temperature Display & Adjustment -- Real-time temperature display, DaToo heater can accurately display real-time water temperature, no need to buy an extra thermometer, save you money. External temperature controller, just press it gently outside the fish tank, you can get the temperature you want, will not scare your cute fish. Very convenient!
  • One Year Warranty & Satisfaction Guarantee: This is a 50W small size heater, ideal for 2~10 gallon aquariums. Suitable for fresh water and salt water. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!

PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks


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PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

$18.99
$14.88  in stock
1 new from $14.88
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • ★【Betta Heater】This Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.
  • ★【Quick and Easy Installation】:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.
  • ★【How it Works】: Plug in, red light turns on, the heater will start working until water temperature up to 78°F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°F. Accuracy:±3°F
  • ★【Note】: Do not operate or leave product plugged in when your water tank is out of water, heater should be fully submerged into water. It is better to install a water pump to help water circulating while heating.
  • ★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt


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Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt

$11.77  in stock
2 new from $11.77
9 used from $9.65
Free shipping
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Amazon.com
as of September 25, 2021 1:40 pm

Features

  • All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.
  • The HT10 uses a built in electronic theromstat to automatically maintain water at 78° F which is ideal for most tropical fish. No adjustment is requried.
  • Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
  • The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other décor.
  • Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.

HiTauing Aquarium Heater, Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Advanced Temperature Control System, Suitable for Saltwater and Freshwater


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HiTauing Aquarium Heater, Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Advanced Temperature Control System, Suitable for Saltwater and Freshwater

$29.99  in stock
1 new from $29.99
Free shipping
Buy Now
Amazon.com
as of September 25, 2021 1:40 pm

Features

  • 【Intelligent Water Sensor and Over Temperature Protection】This aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.
  • 【Rapid Heating System】The voltage of this fish tank heater is 100-120V/50-60HZ, power 300W, Universal two-pin plug, heater rod length 12.99 inch, power cord is 98.5 inches long, 300W submersible heater for fish tank 26-66 gallon, Temp range: 63-94℉/17-34℃. The heating tube can conduct heat quickly and fully contact with water to achieve rapid heating effect.
  • 【Digital LED Display Controller】The external IC temp controller of the fish tank heater can show the water temp with 2 red LED digits. The temperature in Fahrenheit and Celsius is displayed, which can be switched by pressing and holding the button for a few seconds. To set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again.
  • 【Explosion-proof Quartz Material】The submersible aquarium heater is made of high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger black protective container is scald-preventing for your aquatic organisms and your safety.
  • 【Wide Range of Use】This 300W aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept. There are strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged.

Fluval E300 Advanced Electronic Heater, 300-Watt Heater for Aquariums up to 100 Gal., A774


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Fluval E300 Advanced Electronic Heater, 300-Watt Heater for Aquariums up to 100 Gal., A774

$59.99  in stock
9 new from $59.99
1 used from $41.40
Free shipping
Buy Now
Amazon.com
as of September 25, 2021 1:40 pm

Features

  • Aquarium heater with dual temperature sensors provide accurate and real-time water temperatures
  • LCD temperature display available in both Fahrenheit and Celsius; with a range of 68 to 93 degrees Fahrenheit
  • Fast heat technology built with a safety shut-off and integrated fish guard to protect fish and invertebrates
  • Equipped with a slim profile mounting bracket and colored display alert system

We hope you get the perfect cheap aquarium heater from the above list. If you didn’t find your desired one check out the Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt is also the most sold item in the market. To conclude, the Above list of items which is most appropriate to you.