The Best Aquarium Heaters

Best Aquarium Heaters: Reviews, Top Picks, Buying Guide & FAQ

πŸ₯‡ Rank #1
IOAOI
90 %
βœ”οΈ Highly Recommended!
πŸ₯ˆ Rank #2
Orlushy
88 %
βœ”οΈ Recommended!
πŸ₯‰ Rank #3
FREESEA
82 %
βœ”οΈ Recommended!
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Aquarium Heaters: Editor's Overview

Last Updated on Tuesday, September 22nd, 2020.

Giving pet fish a comfortable home is the thing everybody should be doing. This is difficult at times, especially with fish species that need warm water. However, with the right aquarium heater, the trouble is over and done with as you can always monitor the temperature of the fish habitat. We have reviewed some of the best aquarium heaters in the market today to give you a head start in your search for a perfect aquarium heater.

How we Reviewed and Ranked Aquarium Heaters

To create our buying guide for the best aquarium heaters of Sep 2020, we analyzed 2,966 user reviews across 8 products with an average user rating of 4.0 stars. Our scoring algorithms remove fake reviews, consider expert reviews on other websites and monitor search engine interest to determine our confidence in your satisfaction with your purchase.
8
Products Reviewed
2,966
Reviews Analyzed
4.0 ⭐
Average User Rating
$21.16
Average Price
80%
Average ProductAdvisor Score
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The Best Aquarium Heaters of Sep 2020


Rank #1


βœ”οΈ We Highly Recommend This Product!
35
Reviews Analyzed
4.5 ⭐
Average User Rating
$29.99
Latest Price
90%
Our Score

This aquarium heater by IOAOI has a secure double tube structure with an engineering-grade plastic enclosing a stainless steel tube inside. The device is shatterproof and does not have any glass materials on it. Further, this heater can be used with both saline and fresh water and fully immersed in the aquarium.

Key Features

  • Adjustable temperature
  • Works for both fresh and salty water
  • 100 W
  • Horizontal/vertical orientation
Rank #2


βœ”οΈ We Recommend This Product!
56
Reviews Analyzed
4.4 ⭐
Average User Rating
$14.24
Latest Price
88%
Our Score

The Orlushy mini aquarium heater is designed to spare the little space in small aquarium tanks without foregoing quality and performance. Within the compact oval shape, an efficient thermometer tracks the water's temperature while a thermostat maintains a standard temperature of your choosing. However, the temperature control system could have been better.

Key Features

  • External temperature controller
  • LED temperature display
  • Suitable for both fresh and marine water
  • Available for different tank sizes
Rank #3


βœ”οΈ We Recommend This Product!
45
Reviews Analyzed
4.1 ⭐
Average User Rating
$15.99
Latest Price
82%
Our Score

The 25-watt FREESEA aquarium heater is about 6.8 inches long and works with 120 V wall outlet to warm your aquarium to the required temperature. Further, this aquarium heating rod has a generous temperature range of 63 degrees to 95 degrees, which is well above what most pet fish and turtles would require. The FREESEA mini aquarium heater is fully submersible in aquarium water.

Key Features

  • Suitable for 1 to 5 gallons aquarium
  • Intelligent temperature control
  • Slim design
  • Automatic shutoff
Rank #4


βœ”οΈ We Recommend This Product!
373
Reviews Analyzed
4.1 ⭐
Average User Rating
$27.99
Latest Price
82%
Our Score

Fluval M submersible aquarium heater is made from superior quality materials and an advanced construction mechanism. The heating element is covered by shock resistant borosilicate glass that ensures you can operate it safely while it works. It is very straightforward to install and has a slim profile that is easy to replace if the inevitable happens.

Key Features

  • Uses reflective technology
  • Made of shock-resistant borosilicate glass
  • Slim profile
  • Easy to install
Rank #5


⚠️ Some Issues Reported with This Product
452
Reviews Analyzed
3.9 ⭐
Average User Rating
$18.99
Latest Price
78%
Our Score

The FREESEA aquarium heater is one of the most loved portable heaters by fish lovers. The heater features an automatic constant temperature feature where you can set a non-varying temperature for your aquarium. The heater is fully submersible and should always be under water when turned on.

Key Features

  • Compact-sized battery and electric-powered.
  • Made from ABS non-toxic plastic materials.
  • Includes multiple speed levels.
  • Features a 14oz tank for more solution storage.
  • Cyclic adjust temperature
  • Has an automatic constant temperature feature
  • Fully submersible
  • Suitable for 1 to 10 gallon aquarium tanks
Rank #6


⚠️ Some Issues Reported with This Product
1,489
Reviews Analyzed
3.9 ⭐
Average User Rating
$26.54
Latest Price
78%
Our Score

The Eihem Jager aquarium heaters are high-quality and fully submersible aquarium heating devices. With the automatic shutoff feature, the heater is protected from breaking when the tank level dips too low. This feature also protects your fish and other aquatic life in the aquarium by preventing overheating that could kill them.

Key Features

  • Fully submersible
  • Auto shutoff enabled
  • Made of shatterproof glass
  • On/off indicator for easy monitoring
Rank #7


⚠️ Some Issues Reported with This Product
400
Reviews Analyzed
3.5 ⭐
Average User Rating
$16.55
Latest Price
70%
Our Score

The ViaAqua 300 watts aquarium heater is a rod-shaped device designed to maintain a constant temperature for water in a medium-sized tank up to 80 gallons. The heater is made with a shatter-resistant quartz glass that can take the pressure and moderately high temperature without breaking or tearing apart. This makes the heater safe for the aquatic life in the aquarium and saves you the money you would need for replacements.

Key Features

  • High-quality quartz glass
  • Fully submersible
  • Easy to read temperature scale
  • Works for fresh and salty water
Rank #8


⚠️ Some Issues Reported with This Product
116
Reviews Analyzed
3.4 ⭐
Average User Rating
$18.99
Latest Price
68%
Our Score

The FSTSTC submersible aquarium heater has been upgraded to bring better product life, high accuracy, and reliability. This aquarium heater has an adjustable temperature range of 68 degrees to 94 degrees. Besides the submersible aquarium heater, you will also be provided with a portable thermometer to ensure you can always clarify the correctness of the built-in thermometer.

Key Features

  • Made of durable quartz glass
  • Has automatic shutoff
  • Adjustable temperature control
  • Comes with a heater protector

Aquarium Heaters: Buying Guide

These are the main factors to examine before purchasing your aquarium heaters.

⚑ Wattage

The wattage of an aquarium heater is directly related to the volume of water it can heat to a fish-friendly temperature. Of all the heaters we have reviewed, 25 watts is the lowest while 300 watts is the highest. A 25 watts aquarium heater is suitable for tanks with a capacity of up to 5 gallons, while 300-watt heaters can be used with up to 85-gallon aquariums.

🌑️ Adjustable Temperature

Can you change the temperature, or is it fixed? This is important since different fish species have different temperature requirements. Also, you may need to change the temperature for other reasons. All the aquarium heaters we reviewed have an adjustable temperature range.

βš™οΈ Safety Features

Safety for you and your pet fish remains a determining factor for what aquarium heater you buy. Will the device overheat and kill the fish? Is there a risk of electric shock when operating the aquarium heater? Will the heater explode or shatter while heating your aquarium? Consider the answer to these and other safety-related questions, and you can surely choose a perfect aquarium heater. Almost all of the heaters we have reviewed have an auto-shutoff feature that protects the fish.

🚫 Usability

Usability relates to how you interact with the aquarium heater. For instance, how do you adjust the temperature of the heater when it is submerged in water? Some of the aquarium heaters we have reviewed have a temperature adjusting dial while others have a cycle-through push button. Again, consider the temperature display and whether it remains readable throughout the time.

Frequently Asked Questions


There is no reason why you should not use an extension cable; the aquarium heater is just like other electrical appliances. You may want to consider a surge protected extension cord for the safety of your fish.

An aquarium heater with the auto shut off feature may turn on/off frequently during the first use only when the temperature is stabilizing to the user setting. If this happens when the water temperature is way too far from the user setting, it may indicate a failing heater. Contact your heater seller for help.

Even though this is dependent on the manufacturer, most of the heaters should be fully submerged in water to work. Read the user manual that comes with your heater or contact the seller for assistance.

There is no problem with an aquarium heater in a plastic fish tank as long as the heating element does not come into contact with the tank.

The average price of a aquarium heater is $21.16. They range in price from $14.24 to $29.99

The best aquarium heater for the money is the IOAOI Aquarium Heater for Fish Tank. It costs $29.99 on Amazon.com

The cheapest aquarium heater is the Orlushy Mini Aquarium Heater. It costs $14.24 on Amazon.com

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Compare Aquarium Heaters

Our editors selected the following Aquarium Heaters for consideration in our list.
Brand Product Score Price Reviews Rating Weight Dimensions
IOAOI IOAOI Aquarium Heater for Fish Tank 90% $29.99 35 4.5⭐ 0.57 lbs 0 W x 0 L x 0 H
Orlushy Orlushy Mini Aquarium Heater 88% $14.24 56 4.4⭐ 0.00 lbs 2.75 W x 4 L x 1.6 H
FREESEA FREESEA Aquarium Betta Fish Tank Heater 82% $15.99 45 4.1⭐ 0.00 lbs 3 W x 7.9 L x 2 H
Fluval Fluval M 200 Watts Submersible Heater 82% $27.99 373 4.1⭐ 0.28 lbs 4.8 W x 1.7 L x 16.5 H
FREESEA FREESEA 50W Mini Aquarium Heater 78% $18.99 452 3.9⭐ 0.00 lbs 1.5 W x 2.5 L x 3.5 H
Eheim EHEIM Jager Aquarium Thermostat Heater 78% $26.54 1,489 3.9⭐ 0.82 lbs 1.42 W x 0 L x 19.92 H
ViaAqua ViaAqua 300 Watt Quartz Glass Submersible Heater 70% $16.55 400 3.5⭐ 0.68 lbs 1.13 W x 1.13 L x 14.8 H
FTSTC FTSTC Submersible Aquarium Heater 68% $18.99 116 3.4⭐ 0.00 lbs 0 W x 0 L x 0 H
Brand Product Score Price Reviews Rating Weight Dimensions

Best Aquarium Heater Brands

The following brands make the best Aquarium Heaters in the market.

Sources

Thank you to these resources for helping us compile this page
https://aquariumadviser.com/best-aquarium-heaters/
What is the Best Aquarium Heater? When it comes to saying a particular model is the best, there is a...
https://www.fishkeepingworld.com/best-aquarium-heater/
The best aquarium heaters for one person, may not necessarily be for another. The type of heater tha...
https://aquariumlabs.com/best-aquarium-heater-reviews/
Best Small Aquarium Heater: Hygger Submersible Digital Display Mini Aquarium Heater. Buy On Amazon. ...
https://fishtankadvisor.com/best-aquarium-heater-reviews/
Best & Most Efficient Aquarium Heaters Reviews. So now let’s take a closer look at some of the mos...
https://bestreviews.com/best-aquarium-heaters
The best place to position your aquarium heater is next to the filter outflow, as this can help dist...
https://fluffyplanet.com/best-aquarium-heaters/
This aquarium heater is best used for small to medium-sized tanks. It does come with a one year warr...
https://www.thesprucepets.com/top-submersible-aquarium-heaters-2925818
Best Overall: Aqueon Pro Submersible 100W Heater at Amazon "Has durable, non-corrosive construction ...
https://wiki.ezvid.com/best-aquarium-heaters
Currently, the best aquarium heater is the Finnex Digital. Wiki researchers have been writing review...
https://fishcareguide.com/6-best-aquarium-heaters/
The Best Aquarium Heaters Hygger Submersible Fish Tank Heater. Suitable for aquariums between 30 and...
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