Editor's Choice - Our Favorite Eheim Aquarium Heaters

1. Eheim Jager Aquarium Thermostat Heater

User Ratings: 72 7

Eheim 3619090 First Impressions

"I angled it."

For Discus you need warm and accurate heater and this seems to do the trick. I wouldn't buy any other heater, unless one of these stops working. Maintains it well except when the weather is already warm then it over heats it. I like how the heater is constructed. This is only day one though, so I shall keep an eye one it. The design is sleek and modern looking. Pressing and holding the button for 5 seconds changes it from F to C readouts.

  • Eheim Jager Aquarium Thermostat Heater
  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim 3619090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim 3619090 Final Thoughts

"Long heater."

This is only day one though, so I shall keep an eye one it. We would consider a replacement and then we would return the defective unit. I will definitely be buying another one for my other tanks at bigger one. They shipped us the upgraded version that also heats! And kids love pushing all sorts of buttons. We received the chiller promptly and put it into use. I got a hold of Amazon, who put me in touch with the seller.

Overall Score
4.4


(3152 Points)

Peoples Choice - Other Highly Rated Eheim Aquarium Heaters

2. Ehm Heater Jager 300w

User Ratings: 72 7

Eheim First Impressions

"Works fine."

But I am single and don't have to worry about this. I noticed my old hygger heater beginning to fail and my wife ordered this one. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Well I bought a second one took me only one trying to get the right temperature. So if you set it to 78 degrees, the heater will not kick on until it reads 76. No biggie, but annoying nonetheless. I went ahead and went with the the larger 300W for my 45 gallon.

  • Ehm Heater Jager 300w
  • Jager Trutemp Aquarium Heater 20" 300 Wt
  • Manufacture: EHEIM
  • Editor's Impressions Of The Eheim
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim Final Thoughts

"Quality was amazing."

If the water runs low or air gets in the heater shuts off. This heater warmed it right up and now my Betta and guppies are more active. We would consider a replacement and then we would return the defective unit. The temperature has been holding all day, even in a colder room. It is a bonus that the heater is titanium. It just cycles through to 93f and starts over. Seems to keep the temp n the tank fairly regular.

Overall Score
4.4


(53 Points)

3. Eheim Thermocontrol e300 Heater

User Ratings: 89

Eheim AEH3639090 First Impressions

"Until the next time."

Once I opened the box i noticed the quality of the construction. I got this heater for my 55 gallon aquarium. Very easy to install and the adjustable temperature gauge is pretty accurate. You don't have to worry about wide temperature swings with this unit. Awesome chiller, perfect for Hydroponics. I emailed the email it says to and told them. This heater warmed it right up and now my Betta and guppies are more active.

  • Eheim Thermocontrol e300 Heater
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 300W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 159-265 Gallons Height: 19. 5" Power Cord Length: 5. 5'
  • Item Package Height: 1.97
  • Item Package Length: 2.56
  • Item Package Width: 23.03
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3639090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3639090 Final Thoughts

"5 gallon tank."

210 gallon ones and one 90 gallon bow front tank. Takes a little while to drop the temps if it is hot in the garage. It took me only two tries to get it to the correct temperature. If the water runs low or air gets in the heater shuts off. We would consider a replacement and then we would return the defective unit. I like to keep it at 72 and from my thermometer it is reading at exactly 72. It is a bonus that the heater is titanium.

Overall Score
4.8


(11 Points)

4. Eheim Thermocontrol e50 Heater

User Ratings: 77 23

Eheim AEH3632090 First Impressions

"Works just as advertised!"

This is a great heater that is very easy to set up and program. It is a bonus that the heater is titanium. Beware, but we are hoping for a good outcome! When i installed them, i let them sit in the tanks without power for 6-24 hours. It's only been set up for a month we'll see how well it does in a few months. I appreciate the exterior temp readout and control module. I got this heater for my 55 gallon aquarium.

  • Eheim Thermocontrol e50 Heater
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 50W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 6. 5-15 Gallons Height: 9. 2" Power Cord Length: 5. 5'
  • Item Package Height: 3.0
  • Item Package Length: 20.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3632090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3632090 Final Thoughts

"So far so good."

I appreciate the exterior temp readout and control module. Seems to keep the temp n the tank fairly regular. I left seller feedback yesterday but have yet to hear from the seller. Also were nice along the whole process. I used to try those other cheap heaters sold on amazon. The temperatures are pretty accurate. I would definitely recommend this product.

Overall Score
4.1


(6 Points)

Honorable Mentions - More Top Selling Eheim Aquarium Heaters

5. Eheim Thermocontrol e100 Heater

Eheim AEH3634090 First Impressions

"The seller was wonderful."

So when I first received it it didn't work and I was very disappointed. Was very impressed with the quality of this heater. The red light means it's off, blue light means the temperature is constant. Temperature is slightly off by running a little warmer. I have 3 of the Fluval heaters, in various sizes. I wouldn't buy any other heater, unless one of these stops working. For Discus you need warm and accurate heater and this seems to do the trick.

  • Eheim Thermocontrol e100 Heater
  • With the EHEIM thermocontrol-e heating element your fish get the right temperature even more precisely - in every aquarium. The EHEIM thermocontrol aquarium control heater is a further development of the legendary heating element and thermocontrol-e is the latest electronically controlled variant. The obvious ideas are often the best. This also applies to the aquarium heating element. It is simply hung in the water and heats it up. The principle is the same as it was decades ago. But in the meantime the EHEIM controller heater has become an ultra-modern thermal device. The temperature can be set precisely from 68°F to 89°F. It is measured even more precisely and kept more constant by the electronics with a control accuracy of 0. 5 °C. The heat is kept constant with an LED that indicates the heating function. The coating on the heater is made of special laboratory glass that increases the heating surface, serves as a heat shield and ensures even heat emission. There are no cracks and hairline cracks through which condensation water could pass. It is impact resistant. And even extreme temperature fluctuations, such as those that may occur during water changes, do not affect this glass. The heater is absolutely waterproof, can be fully immersed, has a dry run protection (Thermo Safety Control) and is suitable for fresh and marine water. Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3634090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3634090 Final Thoughts

"The FreeSea is amazing."

I confirm it with my cooking digital probe thermometer. Just be careful and keep an eye on your temp settings when you have kids over! It took me only two tries to get it to the correct temperature. This has been in my fish tank for a few months now and it's been absolutely perfect! Very easy to install and the adjustable temperature gauge is pretty accurate. I think it works well to not stand out like other heaters. I got a hold of Amazon, who put me in touch with the seller.

Overall Score
5.0


(4 Points)

6. Eheim Thermocontrol e250 Heater, Black (AEH3638090)

Eheim AEH3638090 First Impressions

"It is a bit pricey."

I contacted the manufacturer and they sent me a new unit in less than a week! Ick for instance detaches from fish at 86 degrees and dies at 89. At this time I highly recommend this product. Those turned out to be a hit and miss. This heater is NOT fully submersible. Ick for instance detaches from fish at 86 degrees and dies at 89. The design is sleek and modern looking.

  • Eheim Thermocontrol e250 Heater, Black (AEH3638090)
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 250W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 106-159 Gallons Height: 17. 4" Power Cord Length: 5. 5'
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3638090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3638090 Final Thoughts

"Perfect heater for my 2."

It took me a few days slowly turning the dial up to finally get it where I wanted. I like how the heater is constructed. The bonus digital thermometer it came with has been super helpful, and is accurate. The heater protector was very heavy plastic and slim lined which is great. This has the best controller that I have found on the market. You don't have to worry about wide temperature swings with this unit. This is only day one though, so I shall keep an eye one it.

Overall Score
5.0


(2 Points)

7. Marineland Precision Heater for Saltwater or Freshwater Aquariums

User Ratings: 64 17

MarineLand ML90652 First Impressions

"There was only~0."

No biggie, but annoying nonetheless. My heater is fully submerged underwater and works perfectly fine. The controller is easy to use, very accurate and reliable. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. Easy enough to let it run all the time. I waited a little bit to write the review so it could be accurate. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees.

  • Marineland Precision Heater for Saltwater or Freshwater Aquariums
  • This 200 watt heater is for aquariums up to 55 gallons. Adjustable temperature dial allows you to set the temperature 1 degree with every click.
  • Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
  • The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display
  • Easy to view sliding scale tells the exact temperature setting. Top dial view shows the setting from an additional location.
  • Manufacture: Marineland
  • Product Dimensions: 3.94 x 1.63 x 14.81 inches; 10.4 Ounces
  • Editor's Impressions Of The MarineLand ML90652
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

MarineLand ML90652 Final Thoughts

"I like the size."

Once I opened the box i noticed the quality of the construction. The red light means it's off, blue light means the temperature is constant. My fish likes to get close to it and he has never been hurt by it. My fish likes to get close to it and he has never been hurt by it. They shipped us the upgraded version that also heats! Ick for instance detaches from fish at 86 degrees and dies at 89. Also I like how it shows both the current temperature and the set temperature.

Overall Score
4.0


(1306 Points)

8. U-picks Submersible Aquarium Heater 100W/300W/500W Fish Tank Heater with Intelligent External LED Di...

User Ratings: 70 11

U-picks First Impressions

"It easy to set."

We received the chiller promptly and put it into use. It's only been set up for a month we'll see how well it does in a few months. The controller is easy to use, very accurate and reliable. Once I opened the box i noticed the quality of the construction. Personally for me the housing doesn't bother me. If the water runs low or air gets in the heater shuts off. They shipped us the upgraded version that also heats!

  • U-picks Submersible Aquarium Heater 100W/300W/500W Fish Tank Heater with Intelligent External LED Digital Temperature Controller and Dual Temp Displays for Turtle Betta Fish Tank 5-130 Gallon
  • External Controller: Our fish tank heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe to adjust temperature, no need to take the heater out from water and risk burning yourself.
  • Dual Temp Displays: With dual accurate LED digital temp displays, you can read & set the water temp at the same time. It is very easy and convenient for you to recognize and observe the temp change in real time even in the night!
  • Smart Heating: With the built-in temperature sensor and constant temperature heating system, this fish heater will start to work when the water temp is lower than set temp(red indicator), and stop work until the water temp reaches set temp(blue indicator). It can always provide adequate and steady water temperature for your beloved fish.
  • High Quality: Our fish tank heater is made of thicker quartz, which is shatter-proof and blast-proof. The heater cover is compact designed, which is heat resistant that will protect you little fish from scalding.
  • Tank Size: This 100W aquarium heater is suitable for 5-25 gallon fish tank both freshwater and saltwater. With our this fish tank heater, you can create a comfortable and safe environment for your fish.
  • Manufacture: U-picks
  • Editor's Impressions Of The U-picks
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

U-picks Final Thoughts

"Yes, you read that right."

I was worried about the quality but I am thoroughly impressed with this heater! I adjusted the set temperature a little lower to be more in the range I wanted. My fish likes to get close to it and he has never been hurt by it. Keeps the water consistent and it's easy to adjust! You program it for temperature you want your tank to be. My marina heater takes a few hours. Come on Fluval, expect better from you.

Overall Score
4.3


(111 Points)

9. Fluval A767 Tronic Heater

User Ratings: 63 8

Fluval A767 First Impressions

"Very easy and accurate."

The temperature lights up so it's very easy to read. No biggie, but annoying nonetheless. Awesome chiller, perfect for Hydroponics. Awesome chiller, perfect for Hydroponics. The heater is easy; turn the dial to set temp and plug in. If the water runs low or air gets in the heater shuts off. I emailed the email it says to and told them.

  • Fluval A767 Tronic Heater
  • Fully submersible, easy to use electronic aquarium heater
  • Patented thermal sensor continuously samples water temperatures
  • Fast heat technology quickly achieves optimum temperature
  • Advanced circuitry for safe and reliable heating
  • 100-watt electronic heater, 13 inches long
  • Manufacture: Rolf C. Hagen (USA) Corp.
  • Product Dimensions: 12 x 4 x 7 inches; 11.2 Ounces
  • Editor's Impressions Of The Fluval A767
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Fluval A767 Final Thoughts

"I like this heater."

I noticed my old hygger heater beginning to fail and my wife ordered this one. The heater is super thin and the reflective surface is interesting. After several weeks of running the heater. Come on Fluval, expect better from you. Takes a little while to drop the temps if it is hot in the garage. We wish the controls were available in Farenheit also to make things a little easier. The heater is being used in a 40 gallon breeder.

Overall Score
4.2


(40 Points)

10. Uniclife Aquarium Heater Submersible with Thermometer, 200 Watt for 50 Gallon Fish Tank

User Ratings: 55 8

Uniclife First Impressions

"Just bought a second one!"

The temperature gauge is fairly accurate in my 55 gallon tank. Beware, but we are hoping for a good outcome! At this time I highly recommend this product. When i installed them, i let them sit in the tanks without power for 6-24 hours. I have 3 of the Fluval heaters, in various sizes. I got a hold of Amazon, who put me in touch with the seller. It took me only two tries to get it to the correct temperature.

  • Uniclife Aquarium Heater Submersible with Thermometer, 200 Watt for 50 Gallon Fish Tank
  • Ideal for 25-50 gallons fish tanks, can be installed in both fresh and saltwater.
  • Red rotatable knob on top for adjusting the temperatures between ranges of 68°F-93°F. Visible temperature displayed allows accurate temperature maintain.
  • Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 11.2" x 1" (L x D).
  • Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The color of number will change to blue to indicate the temperature).
  • By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
  • The red indicator light on while heating, automatic shut-off when reach the temp.
  • The aquarium glass submersible heater must be fully immersed.
  • Install it either vertically or horizontally by attaching the suction cups to the glass of the tank.
  • Manufacture: Uniclife
  • Editor's Impressions Of The Uniclife
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Uniclife Final Thoughts

"5 degrees."

I was worried about the quality but I am thoroughly impressed with this heater! The design is sleek and modern looking. They shipped us the upgraded version that also heats! The cover over the heating tubes is great, the turtles claws can't damage the tube. I would definitely recommend this product. My heater is fully submerged underwater and works perfectly fine. The heater is being used in a 40 gallon breeder.

Overall Score
4.2


(58 Points)

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