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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1)
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
- 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
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This Item EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1) | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -27% $25.49$25.49 List: $34.99 | -16% $30.17$30.17 Typical: $35.99 | -16% $15.97$15.97 List: $18.97 | -41% $11.79$11.79 List: $19.99 | $19.99$19.99 | $29.99$29.99 |
Delivery | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 |
Customer Ratings | ||||||
Suction power | 4.1 | 4.0 | 4.1 | 3.9 | 4.0 | 4.3 |
Accuracy | 3.3 | 3.6 | 3.6 | 3.4 | 3.4 | 4.3 |
Value for money | 3.7 | — | 4.3 | 3.8 | 4.0 | 4.5 |
Temperature Control | — | 3.7 | 3.6 | 3.3 | 3.5 | 4.3 |
Sold By | Amazon.com | Amazon.com | HITOP | Amazon.com | Aquarium Station | LUYS |
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Looking for specific info?
Product details
- Is Discontinued By Manufacturer : No
- Item model number : 3614090
- Date First Available : June 14, 2010
- Manufacturer : Eheim
- ASIN : B003SNU1I2
- Country of Origin : Germany
- Best Sellers Rank: #21,206 in Pet Supplies (See Top 100 in Pet Supplies)
- #57 in Aquarium Heaters
- Customer Reviews:
Videos
Videos for this product
3:58
Click to play video
Set Up, Install, and Calibrate Eheim Heater
Royal Aquatic LLC
Videos for this product
0:58
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Why I Bought OVER 20 Eheim Jager Heaters!
Sydney's Angels
Videos for this product
0:59
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WINTER IS COMING! Be Prepared! #fish #aquarium #pets
DanTheTurtleMan
Videos for this product
0:56
Click to play video
Keeping Turtles WARM In The Winter! #reptiles
DanTheTurtleMan
Product guides and documents
Product Description
All 9 EHEIM Heater models are 100% fully submersible and come with a new TruTemp dial that allows the user to recalibrate the heater within a +/- 0.5F degree accurancy for precise temperature readings.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance and quality of the aquarium heater. For example, they mention it works well and is well made. That said, opinions are mixed on temperature control, calibration, and value.
AI-generated from the text of customer reviews
Customers like the performance of the aquarium heater. They mention that it works well, has provided great service, and has no problems yet. Some say that it's phenomenal and has kept their tank water at an even 78 degrees.
"...EDIT: 2 years later it still works perfectly. My only complaint about these heaters is that they are huge and not easily concealed in the aquarium...." Read more
"This heater is phenomenal and keeps my tank the same temperature always. HOWEVER, there is a small problem...." Read more
"...Works great!" Read more
"It simply doesn’t work most of the time. It turns off and maybe turns on again when the water temperature is 2-3 degrees below the set value...." Read more
Customers like the quality of the pet supplies. They say it's well-made, reliable, and durable. Customers also mention that the temperature controls are nice and stiff. Overall, customers are satisfied with the quality and durability of the product.
"This heater seems very well made compared to other glass heaters...." Read more
"A very classic style of submersible aquarium heater. Heavy duty cord, temperature controls are nice and stiff but the dial indicator is a little..." Read more
"...This unit is either underpowered for what Eheim rates it for or my unit is faulty...." Read more
"...Hopefully it will last a few years since it is a good brand. The temperature dial is easy to see and change...." Read more
Customers are mixed about the temperature control of the pet supplies. Some mention that it does a good job of maintaining the temperature in the tank, while others say that it suddenly started dropping. The temperature adjustment is not properly marked, and the thermostat sticks, causing the heater to stay on regardless of temperature.
"...respected German aquarium product manufacturer and the reviews on this heater were excellent...." Read more
"Good and reliable heater" Read more
"...The user manual does state that it’s not for use with a secondary thermostat but I use mine set to about my max temp and then use an Inkbird set to..." Read more
"...With this heaters length I've been able to maintain temp throughout the tank without issues...." Read more
Customers are mixed about the calibration of the pet supplies. Some mention that it's beyond precise, and the temperature can be calibrated very easily. However, others say that the calibration was a little off at first, and difficult to adjust with the included instructions.
"...Calibration was alittle off at first but easy to adjust with the included instructions." Read more
"...The temperature dial is easy to see and change. It has a calibration dial to set to your tank also." Read more
"...I will say, I have 5 of these and not the first one was calibrated correctly, I couldn't even adjust the red ring/pointer on two of them to match..." Read more
"...few different reasons- and it’s very “old school” with its looks and ability to calibrate. Does the job very well...." Read more
Customers are mixed about the value of the pet supplies. Some mention that the value is good for a heater of this quality, while others say that it's a waste of money.
"...Overall a good solid heater for the price." Read more
"...Good quality, accurate, but limited use. No clue why it is so much longer than it's competitors." Read more
"...It feels well built as soon as you pick it up and the price is right. Even the suction cups work great, no shifting once applied...." Read more
"...Would fit in my biocube 32 chamber but barely! Price was good here on Amazon and I would have kept the heater, but it arrived missing suction cup to..." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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The temperature was dead-on right out of the box, but I like that it can be calibrated.
EDIT: 2 years later it still works perfectly. My only complaint about these heaters is that they are huge and not easily concealed in the aquarium. I've tried replacing it with smaller stealth heaters, but each one of them (5) failed, so I've kept using this one even though it's ugly to look at in the tank.
Top reviews from other countries
Reviewed in Mexico on October 15, 2022
There is a thermostat dial at the top, where you can set the temperature to a particular point. Note that you'll also need another thermometer separately to be sure of the accuracy. You'll need to adjust the settings per your second thermometer, which you can buy at affordable prices separately.
One of the best features about such a high quality heater is that the temperature variation is very smooth, thereby not stressing out the poor fish.
Important note - aquariums should NOT be set at a higher temperature (beyond 28-29C) because it raises the metabolism of the fish, thereby decreasing its life span. After a day or two of observation, I removed this heater because the city in which I live is usually warm.
If I have an aquarium in Ooty or Bangalore, I might consider using this heater to maintain the temperature at around 27. If the surrounding temperature is beyond 27, you can turn this off.
Some people wonder why this heater 'needs' to be calibrated. I think that the truth is you don't really need to calibrate it, you could just set it to a reasonable temperature depending on your stock and then check the temperature with a thermometer for the first 24 hours or so, adjusting up or down as necessary. I think that the reason for the calibration wheel is that it enables you to set the exact temperature (in half degree increments) regardless of the ORIENTATION of the heater. Most people will hang their heater diagonally, the instructions for this one say to place it vertically but I have heard of people placing it horizontally as well (to hide it behind plants for instance). You can imagine that depending on orientation, the the thermostat might read the ambient water temperature slightly differently.
The other thing that I like about this heater is that it seems to be a bit more efficient than others I've looked at. I used the 100w model to replace a 150w Fluval model that exploded as I removed it from the aquarium (never do a water change without turning off your heater first!) Looking at other models of heater, a 150w model was suggested for my 129 litre tank. In this range, the Jager 100w seems to be enough. Not sure how this is possible, but it seems to work fine. Perhaps the heater is cycling less and that can only be a good thing in terms of the stability of the water temperature and the longevity of the heater.
Reviewed in Canada on October 3, 2022