The Best Aquarium Heaters: Reviews, Price Comparisons, FAQ

Fish are beautiful creatures that provide a great source of enjoyment for their owners. If you want to keep your fish alive, however, you need to provide them with a safe environment in which they can thrive. One of the most important aspects of a fish's environment is the temperature. If it's too cold, your fish may become sick or die. In this guide, we will review the top aquarium heaters on the market to help you find the perfect one for your fish.

Fluval M100 Submersible Heater


Price Updated: 4 hours ago

Orlushy Submersible Aquarium Heater


Price Updated: 9 hours ago

HiTauing Submersible Aquarium Heater


Price Updated: 2 months ago
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The Best Aquarium Heaters: Rankings

Aquarium Heater Reviews

Fluval M100 Submersible Heater, 100-Watt Heater for Aquariums up to 30 Gal., A782

Fluval M100 Submersible Heater Our Score: 85% - Recommended

Great heater, I use it in my Fluval Spec V aquarium. The tank was set up in my basement, and the temperature got pretty cold at night, so I bought this heater to help keep the temperature stable. It works great, I would recommend it to anyone else with a cold basement that's trying to keep their aquarium from freezing. Great heater, safe to touch, easy to clean, the perfect choice.

  • Safe and easy to use with built-in temperature controls and a visible
  • Computer-calibrated thermostat and easy-to-adjust temperature
  • Safe to touch high temperature resistant easy to clean the perfect choice
  • Slim profile tube for easy placement was
  • 100-watt heater suitable for freshwater and saltwater aquariums up to
Orlushy Submersible Aquarium Heater 100W for Marine Reef Fish Tank Sump

Orlushy Submersible Aquarium Heater Our Score: 83% - Recommended

Orlushy Submersible Aquarium is a great product to create a mini marine life habitat in your home. This tank is easy to use and maintain, but the filter is not very accurate. It works best with small fish like tetras, and the size is perfect for any corner of your house. You'll love the clear glass and the little bubbles that form on the surface of the water when the light is on. The price is affordable for any budget. URPOWER Dog Seat Cover Car Seat If you are looking for a nice dog seat cover, URPOWER Dog Seat Cover Car

  • For aquariums up to 30 gallons
  • Easy to use but not accurate
  • Made with 2mm thickened quartz glass
  • Precise temperature dial from 68 to 89 F allows for complete control of
  • Automatic shut off when the temperature is reached adjustable aquarium fish tank heater for
HiTauing Submersible Aquarium Heater, 300W/500W Fish Tank Heater with Accurate Temperature Control and Anti-Dry Burning Function, External Digital Controller, Suitable for Saltwater and Freshwater

HiTauing Submersible Aquarium Heater Our Score: 81% - Recommended

HiTauing Submersible Aquarium Heater is one of the best fish tank heaters on the market. Its temperature control system of Fahrenheit and Celsius is convenient for the most users. Moreover, it has an external temp controller and a digital display of water temperature. This is an ideal heater for your fish tank. If you are looking for a reliable product, we highly recommend this item to you.

  • Temperature control system of Fahrenheit and Celsius Temp range: 63-94
  • Intelligent water sensor and over temperature protection
  • External temp controller digital display of water temperature
  • Great for a variety of fish tanks and aquariums
  • Explosion-proof Quartz Glass Aquarium Heater
Simple Deluxe 100W 200W 300W Submersible Aquarium Titanium Fish Tank Heater with Intelligent LED Temperature Display, External Temperature Controller for Saltwater and Freshwater

Simple Deluxe Titanium Aquarium Heater Our Score: 81% - Recommended

The Simple Deluxe Titanium Heater works with 30-40 gallon aquariums. It has a safety level of IPX8 waterproof, which is explosion-proof and anti-corrosion. It also has an intelligent temperature control which can be easily adjusted using the controller. If you have a large aquarium that needs to be heated, this heater is a great choice.

  • Works with 30-40 gallon aquariums
  • Safety: IPX8 waterproof level; explosion-proof and anti-cor
  • Intelligent temperature control
  • Quick and easy temperature adjustment
  • Water shortage protection
EHEIM Jager Aquarium Thermostat Heater 150W

Eheim Jager Aquarium Thermostat Heater Our Score: 81% - Recommended

Eheim Jager Aquarium Thermostat is a great product for anyone who has a large fish tank. It's simple to use and will automatically adjust the temperature based on the needs of your fish. The fully submersible design makes it easy to mount to your aquarium. You can feel confident that your fish are being cared for properly with this product.

  • Fully submersible
  • Safety control against running dry
  • Automatic shutoff if water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Shatter proof glass
  • Indicator light turns on when the machine is in use and blinks when
hygger 300W Aquarium Heater for Fresh-Water Salt-Water, with External Digital Display Thermostat Controller and Thermometer, Auto Quartz Submersible Heater for Fish Tank 30-60 Gallon

hygger 300W Aquarium Heater Our Score: 79% - Satisfactory

If you're tired of having to constantly heat up your aquarium, then this heater is a must-have. It will automatically turn on when the water temperature drops below the set point. You'll also be able to see the temperature with the LED display controller. This heater is fully submerged, so it won't affect the aesthetic of your aquarium. It's very easy to use and requires no special skills or tools.

  • Quickly Heat Up Voltage 110-120V
  • Fully submerged heater tube
  • Led Display Controller Only show Fahrenheit degrees To set the temp
  • Can be used for saltwater and freshwater aquariums
  • Auto on and off Reliable submersible aquarium heater
Penn Plax Aquarium Heater Fully Submersible Within 1 Degree of Accuracy 50 Watt Heats Up to 10 Gallon Tank

Penn Plax Aquarium Heater Our Score: 77% - Satisfactory

This Penn Plax Aquarium Heater is a really great product to have for your fish tank. It's really easy to read the gage and there are no issues with it being submersible. It was easy to setup and it keeps my fish tank at a perfect temperature for my fish. It's totally worth the money and I would recommend this to anyone with a fish tank.

  • Aquarium heater for aquariums up to 100 gallons
  • Easy to read gage frontrunner
  • Totally submersible heater isEnabled
  • Programmable touchscreen digital thermostat that displays the room temperature on its screen
  • Safe for smaller tanks and aquariums up to 10 gallons in size
FREESEA 25 Watt Aquarium Betta Fish Tank Heater with Aquarium Submersible Thermometer

FREESEA 25 Watt Aquarium Heater Our Score: 77% - Satisfactory

FREESEA 25 Watt Aquarium Betta is a great product. You can use it in aquariums, ponds, and terrariums. It's a fully submersible heater that will keep your fish or other aquatic animals warm and comfortable. This product is highly recommended. URPOWER Dog Seat Cover Car Seat is a great choice to protect your car from dog scratches and stains. It's 100% waterproof and wearproof, so you can rest assured your interior is safe. The size of the cover should fit the majority of cars, both large and small. We recommend this product to anyone who travels with

  • Temperature range 63 F 95 F
  • 100 submersible heater can be used in aquariums ponds
  • Automatic constant temperature function when water temperature reaches to specified temperature value heater
U-picks Submersible Aquarium Heater 500W/300W/100W Fish Tank Heater with Dual Intelligent External LED Digital Temperature Displays and Controller for Turtle Betta Fish Tank 80-130 Gallon (500W)

U-picks Submersible Aquarium Heater Our Score: 77% - Satisfactory

U-picks Submersible Aquarium Heater is great for both saltwater and freshwater tanks. It features an external controller so you can easily adjust the temperature. This product is perfect for anyone who has trouble keeping the water temperature right for their fish. U-picks Submersible Aquarium Heater works great and it's affordable! We highly recommend it. URPOWER is a leading manufacturer of power banks and portable chargers, which are mostly sold on Amazon and eBay. URPOWER offers a 1-year warranty on all of its products. URPOWER also provides

  • Fully Submersible Aquarium Heater ---Voltage
  • Smart Heating ---When the water temperature is lower than the set
  • External Controller ---This 500W submersible heater is adjusted by
  • Dual temperature displays
  • High Quality Material ---Made of thicker quartz this heater is shatter
Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt

Tetra HT Submersible Aquarium Heater Our Score: 77% - Satisfactory

Tetra HT Submersible Aquarium Heater is a great choice for anyone who has a small aquarium. The heater is very convenient to use, as it is designed to automatically turn off when the water temperature reaches 78 °F. It also provides a constant heat output of 50 watts. This product is perfect for any beginner or intermediate aquarist.

  • Maintenance free heaterTurns off when water temperature reaches 78 F
  • Designed for small aquariums under 10 gallons
  • Submersible heater
  • Simple and easy to use
  • Please read all label information upon delivery DO NOT plug heater into an electrical

Compare Prices and Sales History

2,029 85% $26.02 $32 -19%
10,746 83% $17.80 $19 -6%
47 81% $31.79 $33 -4%
109 81% $23.99 $24 0%
4,196 81% $22.92 $30 -24%
102 79% $57.68 $58 -1%
1,018 77% $18.40 $19 -3%
5,143 77% $15.83 $16 -1%
451 77% $42.95 $50 -14%
6,492 77% $11.77 $12 -2%

Frequently Asked Questions

What is the best aquarium heater?

The best aquarium heater is the Fluval M100 Submersible Heater. The average buyer rates it 4.7 out of 5 and we scored it 85%. It's available on Amazon for $31.99

How much does a Aquarium Heater cost?

Aquarium heaters range in price from $31.99 (Fluval M100 Submersible Heater) to $31.99 (Fluval M100 Submersible Heater). The average price for a Aquarium Heater is $29.29

What is the cheapest Aquarium Heater?

The cheapest aquarium heater is the Fluval M100 Submersible Heater. The average buyer rates it 4.7 out of 5 and we scored it 85%. It's available on Amazon for $31.99

Best Aquarium Heaters Brands

3 Products
8,766 Reviews
Average Score: 85%
1 Products
10,746 Reviews
Average Score: 83%
1 Products
47 Reviews
Average Score: 81%
4 Products
1,087 Reviews
Average Score: 81%
1 Products
4,196 Reviews
Average Score: 81%
1 Products
102 Reviews
Average Score: 79%
3 Products
2,898 Reviews
Average Score: 77%
1 Products
5,143 Reviews
Average Score: 77%
1 Products
451 Reviews
Average Score: 77%
7 Products
47,772 Reviews
Average Score: 77%


Best Small Aquarium Heater: Hygger Submersible Digital Display Mini Aquarium Heater. Check Latest Price. If you have multiple aquariums with small tanks, consider a mini-heater instead of the big submersible ones. The Hygger Mini Aquarium Heater can handle tanks of up to 13 gallons with no issue at all. The compact design with suction cups makes it easy to install on glass, plastic, or acrylic ...

Simplicity is key for aquarium heaters, and this Fluval M Submersible Heater is very easy to use. It is a 200-watt submersible heater, designed for aquariums or betta fish tanks up to 65 gallons. It features a computer calibrated thermostat with an easy to adjust temperature control.

This aquarium heater by Cobalt Aquatics is a great way to kick off this list of the 11 best aquarium heaters. With 25, 50, 75, 100, 150, 200, and 300W options, there will be a model that is the perfect power for your tank. Uniquely among heaters this model features a modern flat design. This design allows it to be fully submerged in water.

The Best Aquarium Heaters Reviewed Tetra HT Submersible Aquarium Heater A range of non-adjustable heaters suitable for aquariums from 2 to 30 gallons, perfect for those just starting out with fishkeeping.

Immersible aquarium heaters are pretty affordable and ideal for smaller tanks. But, they are not as exceptional, performance-wise, as submersible aquarium heaters. In-line aquarium heaters are a bit more expensive, and they usually do not work with each filter type, meaning it limits your options. Best Aquarium Heater Comparison Chart 2021

Eheim Jager TruTemp Submersible Heater Having a regulated and consistent water temperature is the key to having a robust aquarium for your fish. This adjustable aquarium heater from Eheim is a modern electronic thermal device that uses the best and latest technology. This 300-watt heater is ideal for a 159-264 gallon tank.

The Tetra HT10 Submersible Aquarium Heater is the best aquarium heater for the money because it is functional but affordable. This heater is 50-watts and is not adjustable. This heater maintains the water temperature at a preset 78°F, plus or minus 2°F.

The Marineland Precision Heater is one of the top aquarium heaters on our list. As its name states, it’s a precise heater, allowing you to adjust the temperature easily. It is appropriate for both freshwater and saltwater and can be fully submerged. Depending on the right temperature in the aquarium, it will automatically turn itself on or off.

The best place to position your aquarium heater is next to the filter outflow, as this can help distribute heat more evenly. However, if you have a particularly large tank, it's best to have two heaters, one placed on each end of the tank, so the water on the side farthest from the heater doesn't get cold. "We recommend owning a backup heater so you can quickly replace the old one if it breaks ...

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