Do you have an aquarium at home?

Aquarium heaters have become an important part of many fish tanks, as they regulate water temperature to keep your fish happy and healthy. We’ve done the research and narrowed down your choices to just seven of the best aquarium heaters available so that you don’t have to worry about finding ‘the one’ anymore!

With our top-reviewed picks, you will know exactly which heater is perfect for your tank size, water temperature requirements, and budget. Whether it's a basic stick-on adjustable model or an advanced digital option with safety auto shut-offs – rest assured we've got them all covered here!

How We Picked These Products

Heating your aquarium is a crucial part of fishkeeping, but it's not always easy to find the perfect heater.

Heaters are an essential piece of equipment for any aquarium, but there are so many different options to choose from that it can be hard to know which one is right for you.

We've done the research for you after a detailed analysis of the market and found the 7 best aquarium heaters on the market. Whether you're looking for a submersible heater, a titanium heater, or something else entirely, we've got you covered.

Best Aquarium Heater With Digital Display Controller

HiTauing Aquarium Heater

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What We Love About It

The HiTauing aquarium heater features a digital display controller that ensures precision and accuracy. With two LED digits, the external IC temp controller displays both Fahrenheit and celsius temperatures on the screen for easy viewing.

Simply press and hold the button to switch between measurements and adjust them according to your aquarium's needs with a few quick presses until you reach your desired temperature.

The LED will then show you what temperature range has been set! Reliable and efficient, the HiTauing aquarium heater is guaranteed to give you peace of mind, creating just the right environment for all the creatures living in your tank.

What We Must Know

The HiTauing aquarium heater is not only useful for fish markets to keep their fish fresh but also for individuals wanting to maintain an aquatic setting in their homes. With 500 watts of power and adjustable heating technology, the HiTauing is suitable for many situations.

Its installation and use are made easy by its strong suction cups which attach the heater guard and temperature meter firmly to tanks, ponds, or aquariums. Therefore it is important to know that this aquarium heater offers a comprehensive range of use.

Best Aquarium Heater With 2 Suction Cups Free Thermometer

Orlushy Submersible Aquarium Heater 

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What We Love About It

Orlushy aquarium heaters come with innovative 2 suction cup-free thermometers, you can keep your aquarium at the optimal temperature without having to worry about disruptions or any sticky residue.

This feature eliminates potential damage that can be caused by air bubbles getting in between the part and the glass of your tank. Plus, this makes it much easier for you to make sure your aquarium is just right for all its finned inhabitants.

Without having to constantly check and replace the suctions cups, your tank will stay secure and in sync with the atmosphere of its environment.

What We Must Know

When it comes to selecting an aquarium heater, the Orlushy tools are amongst the most reliable. With a variety of sizes available, from 300W to 500W options, you can easily find a suitable heater for your 40-55 gallon tank. Each device is designed with a lengthy 11-inch form factor and offers up to 6ft of power cord for convenience.

These aquarium heaters work perfectly between 110-120V, making installation and usage more efficient than ever before. By taking our size chart into account before purchasing a heater, you'll be able to ensure that you get the right wattage every time.

Best Aquarium Heater That is Explosion Proof

Hitop Adjustable Aquarium Heater

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What We Love About It

The Hitop aquarium heater features explosion-proof technology that guarantees safety for both humans and aquatic animals. The aquarium heater is made of 2mm thickened quartz glass which is 33% thicker than ordinary glass, making it highly durable and resistant to cracks.

The explosion-proof feature ensures that you can safely heat your aquarium water without worrying about any accidents occurring. As we know, accidents can happen at any time, but this heater's thickened quartz glass material reduces the risk of breaking or cracking under high temperatures or pressure changes in the tank.

This safety feature provides peace of mind knowing that your pets are not exposed to any harm caused by shattered glass from a broken heater.

What We Must Know

Hitop aquarium heater is quite a revolutionary product because of its long service life. It has an 8-slot multi-branched heating wire ceramic frame which ensures that heat is dispersed evenly and efficiently, while also taking up minimal space.

This makes Hitop aquarium heater great for owners who have a limited amount of space in their tanks. The 9.5*1*1 in(24*2.5*2.5 cm) size also makes it easy to hide and blend with the background elements of your tank.

With this product, you can be sure that the temperature will remain constant for long periods, allowing for excellent environmental conditions for your fish to thrive in.

Best Aquarium Heater That Includes Durable Titanium Tube

MQ Titanium Aquarium Heater 

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What We Love About It

The MQ titanium aquarium heater is quickly becoming a favorite among fish enthusiasts because of its durable titanium tube features. Made from premium titanium alloy, this aquarium heater ensures safe operation and has an explosion-proof function that sets it apart from other heaters in the market.

But that's not all - the MQ titanium aquarium heater also comes with double seal material, making it shatterproof and waterproof. This feature provides an extra layer of protection for your beloved fish by preventing any leaks or breakages that could potentially harm them.

The advanced design of this heater guarantees smooth and efficient heating while maintaining a constant temperature inside your aquarium, creating a comfortable environment for your aquatic pets to thrive in.

What We Must Know

The MQ titanium aquarium heater is designed with the latest intelligent temperature control technology, allowing users to set a target temperature and has it remain precisely that, even if the surrounding water changes. You do not have to worry about surprise temperature drops or jumps, as the inbuilt accuracy of this heater will make sure your fish remain safe and comfortable.

This technology automatically adjusts heating power when there is any variation in water temperature, so you won't have to keep checking and adjusting - perfect for busy people who are still interested in creating optimal habitats for their fish.

Best Aquarium Heater That Comes With Memory Function

Aqqa Submersible Aquarium Heater 

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What We Love About It

The Aqqa aquarium heater is a game-changer in the world of fishkeeping. Thanks to its innovative memory function, users no longer have to worry about resetting the controller every time there's a power outage.

This feature saves time and gives fish keepers peace of mind knowing that their aquatic pets are safe. The memory function works by automatically remembering the previous temperature setting when the power goes out or is turned off.

When the power comes back on, the heating rod will simply start working according to this previous setting without any need for manual adjustment. This means that even if you're away from home and experience a power outage, your fish tank will remain at its ideal temperature until you return.

What We Must Know

The aquarium heater by Aqqa offers an adjustable hook feature that makes installation effortless. There’s no need for tools for the hook to be mounted onto the back of the controller, and its size can be adjusted accordingly to fit any thickness of the fish tank.

These accessory hooks give users a reliable space-saving way to hang their controller on their tank securely, which is sure to be a lifesaver in managing a small space or crowded tanks.

The adjustable hook features give users extra security in knowing that their appliance is firmly connected and steadfastly standing upright against any unexpected movements or accidents happening around a lavishly landscaped glass aquarium.

Best Aquarium Heater That Comes With Automatic Constant Temperature Function

Freesea Aquarium Heater 

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What We Love About It

The Freesea aquarium is a reliable heater that has quickly become a fan favorite because of its automatic constant temperature function, which takes the guesswork out of maintaining your tank's temperature. This feature ensures that your fish and other aquatic creatures remain comfortable and healthy in their environment.

The Freesea aquarium heater is designed to automatically stop heating when the water temperature reaches the set value. This means that you don't have to worry about constantly monitoring the temperature or manually turning off the heater.

Conversely, if the tank water temperature drops below your specified setting, this advanced technology will automatically start heating again to restore optimal conditions for your marine life. With this automatic constant temperature function, you can rest easy knowing that your fish are in good hands.

What We Must Know

The Freesea aquarium heater is a great choice for all saltwater and freshwater fish tanks. Not only is its advanced design built with durability and safety in mind, but also it comes with an incredible satisfaction guarantee that ensures its durability.

In the unlikely event that you are not happy with your aquarium heater, simply contact its customer service and they will provide a replacement free of charge. Your peace of mind is their priority, which is why they guarantee this product for 12 months and provide 24-hour professional after-sales service. Don’t worry; the Freesea aquarium heater has got your back!

Best Aquarium Heater That Comes With Easy-to-Set Temperature Feature

Hygger Aquarium Heater

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What We Love About It

Hygger aquarium heater with its easy-to-set temperature feature makes maintaining ideal conditions simple and stress-free. This feature allows you to adjust the temperature of your aquarium without getting your hands wet, which saves you time and eliminates any potential hazards.

The Hygger aquarium heater's precise temperature control means that you can set the desired water temperature between 61 and 90 F (16 C - 32 C) with just a press of a button. It blinks for three seconds before beginning to work, which ensures that the setting is accurate and gives you peace of mind.

This feature enables you to maintain consistent water temperatures for different types of fish species that require specific conditions.

What We Must Know

Hygger aquarium heater is not just a regular aquarium heater but one that comes with a built-in external IC temp controller for accurate water temperature control. This controller ensures that the water temperature in your aquarium remains stable and consistent, which is essential for the health and well-being of your fish.

The easy-to-read blue LED digital number on the Hygger aquarium heater displays the real-time water temperature, so you can always keep an eye on it. The heat indicator lights up red when the fish heater starts to heat up, letting you know that it's working properly. Once it reaches the set temperature, the light turns yellow, indicating that your aquarium has reached its optimal temperature.


Heating your aquarium is important, but it can be difficult to know which heater is right for you.

These heaters are an essential part of any fish tank, but there are a lot of different factors to consider when choosing the right one.

Our FAQs about aquarium heaters will help you make the best decision for your tank. We'll walk you through everything from size and power to installation and safety features. With our help, you'll be able to find the perfect heater for your aquarium in no time.

Which is the best aquarium heater?

When choosing the best aquarium heaters, there are several features to consider. It’s important to select a heater that is designed for the size of your tank. Heaters come in various wattages and sizes, so make sure you pick one that is suitable for your tank’s capacity.

It’s also beneficial to look for an adjustable thermostat that allows you to set the desired temperature range. You should look for a heater with an indicator light or alarm that alerts you when the water gets too hot or cold.

An In-line heater is another best option to be considered. It is a small, lightweight, high-performance heater that can easily replace traditional immersion aquarium heathers. Some brand options like the jager aquarium thermostat heater can also be considered.

What is the most energy-efficient way to heat an aquarium?

The most energy-efficient way to heat an aquarium is to use a fully submersible heater. Submersible heaters are submerged in the water and use electricity to generate heat, which is then transferred directly into the water.

 This direct transfer of energy makes them much more efficient than other types of heaters, such as air heaters or space heaters, which must first convert the energy from electricity to another form before heating the tank

Is glass or plastic aquarium heaters better?

It depends on the situation. Glass heaters are generally more durable and last longer than plastic ones. They also have better temperature control, as they provide more even heating throughout the tank.

What size heater for a 50-liter aquarium?

The size of the heater you need for a 50-liter aquarium depends on several factors, including the type of fish you plan to keep in your tank and the temperature of the room where it is located. 

A 50-liter aquarium should have a heater that is rated between 25 and 75 watts. This will provide enough heat to keep the water temperature within an acceptable range for most species.

Where is the best place to put the aquarium heater?

The best place to put an aquarium heater is in the back corner of the tank. This will ensure that the heat is evenly distributed throughout the tank, rather than just concentrated in one spot. Having the heater at the back of the tank will make it easier to access and maintain.

Does the heater reduce oxygen in the aquarium?

The heater does not reduce oxygen in the aquarium. Oxygen is constantly being produced by plants, animals, and bacteria in the aquarium, so it is important to ensure that these sources of oxygen production are sufficient for the inhabitants.

How can I heat my fish tank naturally?

Heating a fish tank naturally can be done in a few ways. One way is to use the sun's energy by placing the tank near a window that receives direct sunlight during the day. This will help keep the water at a warm temperature, especially during the summer months.

Another option is to place your tank near an area of your home that gets warmer than other areas, such as near a heater or fireplace. Lastly, you can also add warm water to your tank when doing water changes or top-offs. This will help keep the overall temperature of your tank more consistent.

How much water can a 50W aquarium heater heat?

The amount of water a 50W aquarium heater can heat depends on several factors, including the size of the tank, the ambient temperature, and the desired water temperature. Generally speaking, a 50W aquarium heater should be able to heat up to 5 gallons (19 liters) of water by 10°F (5.5°C).

Can you leave an aquarium heater on all the time?

Yes, you can leave an aquarium heater on all the time. However, it is important to make sure that the tank temperature does not exceed the recommended level for the type of fish you have in your tank. Overheating can cause stress and even death for your fish.

It is important to invest in a good quality aquarium heater with an adjustable thermostat so that you can monitor and adjust the temperature as needed.

How long do aquarium heaters last?

The average lifespan of an aquarium heater is several years. This can vary depending on the type and quality of the heater, as well as the maintenance and care it receives. High-quality heaters with proper care can last up to five years or longer. On the other hand, lower-quality heaters may only last a year or two.

Is a heater necessary for an aquarium?

A heater is not absolutely necessary for an aquarium, but it can be a beneficial addition. If you plan to keep tropical fish, a reliable heater is essential to maintain the water temperature in the tank. 

Without one, the water temperature will fluctuate with the room's temperature, which can be too cold for some species of fish.

Can fish get burned by the heater?

Yes, fish can get burned by the heater. This is because the water temperature in an aquarium can increase quickly if the heater is set too high. Fish are cold-blooded animals and need to maintain a specific body temperature to stay healthy. If the water temperature rises too high, it can cause their metabolism to speed up and lead to burns on their skin and fins.

How many watts should a fish tank heater be?

The wattage of the fish tank heaters depends on the size of the tank and the temperature of the water. You should use a heater that is between 2.5 and 5 watts per gallon of water. For example, if your tank is 10 gallons, you should use a 25-50 watt heater

Does aquarium heater harm fish?

An aquarium heater can be beneficial for fish, as it helps to maintain a consistent and comfortable temperature. However, if the heater is not properly maintained and monitored, it can cause harm to the fish.


Congratulations on taking the first step by learning about the 7 best heaters you can use to ensure your fish stay in good condition! Whether you are a new or experienced fish keeper, always remember that keeping the water temperature stable is one of the most important things you can do for their health through some heating element.

With the right heater and proper maintenance, you can rest assured that your fish are well taken care of. As you journey into fishkeeping, enjoy every aspect of learning more about it; as with anything, continuous development is key! We hope this blog post gave you a better understanding of selecting the right heater for your aquarium.