20 Best Eheim Heater 100w [2024]

Are you looking for the best eheim heater 100w? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling eheim heater 100w.

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# Preview Product
1 EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1) EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1)
2 Eheim Thermocontrol e125 Heater, Black, Wattage: 125W (AEH3635090) Eheim Thermocontrol e125 Heater, Black, Wattage: 125W (AEH3635090)
3 Eheim Thermocontrol e100 Heater Eheim Thermocontrol e100 Heater
4 Jager Trutemp Aquarium Heater 12 100 Watt Jager Trutemp Aquarium Heater 12 100 Watt
5 Eheim 3619090 Jager Aquarium Thermostat Heater 300W Eheim 3619090 Jager Aquarium Thermostat Heater 300W
6 EHEIM NORTH AMERICA - JAGER HEATER 150W (13'') 'Ctg: AQUATIC PRODUCTS - AQUATICS - TANK HEATERS' EHEIM NORTH AMERICA - JAGER HEATER 150W (13"") "Ctg: AQUATIC PRODUCTS - AQUATICS - TANK HEATERS"
7 FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer
8 hygger ETL Certification Aquarium Heater, 50W/100W/200W/300W Submersible Fish Tank Thermostat Heater... hygger ETL Certification Aquarium Heater, 50W/100W/200W/300W Submersible Fish Tank Thermostat...
9 Eheim Thermocontrol e300 Heater Eheim Thermocontrol e300 Heater
10 Eheim Thermocontrol e200 Heater, Black, Wattage: 200W, Model Number: AEH3637090 Eheim Thermocontrol e200 Heater, Black, Wattage: 200W, Model Number: AEH3637090
11 AQQA Fish Tank Heater 100W for 25-35 Gallon Mini Aquarium Heater Quartz Glass Submersible Heater for... AQQA Fish Tank Heater 100W for 25-35 Gallon Mini Aquarium Heater Quartz Glass Submersible Heater...
12 Eheim Thermocontrol e150 Heater, Black, Wattage: 125W (AEH3636090) Eheim Thermocontrol e150 Heater, Black, Wattage: 125W (AEH3636090)
13 AQQA Submersible Aquarium Heater,100W/200W/300W Fish Tank Heater with Adjust Knob 61-90℉,Quartz... AQQA Submersible Aquarium Heater,100W/200W/300W Fish Tank Heater with Adjust Knob 61-90℉,Quartz...
14 Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon... Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70...
15 VIVOSUN Aquarium Heater 50W/100W/200W/300W/400W/500W Submersible Titanium Fish Tank Heaters with... VIVOSUN Aquarium Heater 50W/100W/200W/300W/400W/500W Submersible Titanium Fish Tank Heaters with...
16 Eheim Thermocontrol e75 Heater, Black (AEH3633090) Eheim Thermocontrol e75 Heater, Black (AEH3633090)
17 Eheim Thermocontrol e250 Heater, Black (AEH3638090) Eheim Thermocontrol e250 Heater, Black (AEH3638090)
18 Fluval M100 Submersible Heater, 100-Watt Heater for Aquariums up to 30 Gal., A782 Fluval M100 Submersible Heater, 100-Watt Heater for Aquariums up to 30 Gal., A782
19 Eheim Jager 250W TruTemp Submersible Heater 17” Eheim Jager 250W TruTemp Submersible Heater 17”
20 Eheim Thermocontrol e50 Heater Eheim Thermocontrol e50 Heater
SaleBestseller No. 1
EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1)
  • 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
SaleBestseller No. 2
Eheim Thermocontrol e125 Heater, Black, Wattage: 125W (AEH3635090)
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary...
  • Item Package Height: 3.0
  • Item Package Length: 22.0
  • Item Package Width: 3.0
SaleBestseller No. 3
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...
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
Bestseller No. 5
Eheim 3619090 Jager Aquarium Thermostat Heater 300W
  • Heater is meant for Tanks between 159-264 Gallons.
  • Size of Heater is 20” X 1.4” Diameter
  • Fully submersible, will automatically turn off when water level dips too low.
  • Thermo safey control protects against running dry.
  • Made of shock resistant and shatter proof glass for fresh or marine water.
SaleBestseller No. 7
FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer
  • ★【50 Watt Heater】: This Aquarium heater is suitable for 5 to 15 gallons aquariums, Length - 6.8 inch,voltage 110-120V, power cord is 4.0 ft,...
  • ★【Temperature range】: 63°F~95°F , It is very easy to adjust the temperature you need, we also deliberately give each customer a free diving...
  • ★【Intelligent temperature control】:Automatic constant temperature function, when water temperature reaches to specified temperature value,...
  • ★【Note】: 1. Aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,Please unplug...
  • ★【SATISFACTION GUARANTEED】: Gain the confidence to go hard with us! Our Aquarium Heater is built with durability in mind and safety for every...
Bestseller No. 8
hygger ETL Certification Aquarium Heater, 50W/100W/200W/300W Submersible Fish Tank Thermostat Heater...
  • TEMP SETTING GUIDELINE: DO: Rotate left and right to adjust the temperature, easy to adjust, the range is 68℉~93℉. SEE: temperature scale setting...
  • SAFETY CERTIFICATE: ETL Certification, hygger provide the most effective guarantee for your fish tank. Thickened Quartz Protective Glass; Bottom...
  • WORKING PRINCIPLE: The hygger THERMOSTAT HEATER stops when the surrounding water temperature reaches the set temp, and starts to work when the...
  • PRODUCT PARAMETER: Cord Length: 5.9ft; Voltage:120V AC 60Hz; Watts:50W/100W/200W/300W; the temperature range is 68℉~93℉; Can be used in various...
  • QUALITY GUARANTEE: 2mm thick glass tube, heat conduction is more even, anti-collision, explosion-proof and corrosion-resistant, dual-purpose for betta...
Bestseller No. 9
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...
  • Item Package Height: 1.97
  • Item Package Length: 2.56
  • Item Package Width: 23.03
Bestseller No. 10
Eheim Thermocontrol e200 Heater, Black, Wattage: 200W, Model Number: AEH3637090
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary...
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
Bestseller No. 11
AQQA Fish Tank Heater 100W for 25-35 Gallon Mini Aquarium Heater Quartz Glass Submersible Heater for...
  • 🔥SAFE& DURABLE: Made of heat-resistant quartz glass and PC plastic cover, double seal material, providing explosion-proof, shatterproof, IP68...
  • 🔥INTELLIGENT AUTOMATIC HEATING: Automatic constant temperature function, design with External Temperature Controller, Temperature Range is 59ºF-...
  • 🔥Digital LED Display: LED display on the middle of the controller front side, Current Temp and Set Temp. If your heater is working properly, the...
  • 🔥EASY INSTALLATION: Easy and quick installation, submersible fish tank heater, vertical or horizontal placement using attached adjustable hanging...
  • 🔥WIDE APPLICATION: Suitable for freshwater and saltwater aquariums. NOTE: Before you clean the aquarium or change water, please cut off the heater...
Bestseller No. 12
Eheim Thermocontrol e150 Heater, Black, Wattage: 125W (AEH3636090)
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary...
  • Item Package Height: 3.0
  • Item Package Length: 22.0
  • Item Package Width: 3.0
Bestseller No. 13
AQQA Submersible Aquarium Heater,100W/200W/300W Fish Tank Heater with Adjust Knob 61-90℉,Quartz...
  • 👍【100W Submersible Thermostat Heater】Size-H*W-11.3"*1.1"(28.3cm*2.8cm),110V/60Hz,Cord length is 5.9ft,Suitable for fish tanks with any side...
  • 👍【Quartz Explosion-proof Heater】:Use high quality 2MM thickened quartz glass,Insulation and anti-leakage,Explosion-proof is safer and more...
  • 👍【Temperature Range 61-90℉】The red light means heating and turns off when it reaches the set temperature.Manual adjust knob to set...
  • 👍【Automatic Constant Temperature】High-quality nickel wire, fast heating, good thermal conductivity,2 sterling silver contacts, more accurate...
  • 👍【Attention Submersible Fish Tank Heater】With 2 powerful suction cups, it can be placed vertically or flat in any position in the fish tank....
Bestseller No. 14
Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon...
  • Explosion Proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals.
  • Application: 100W water heater is suitable for 10 – 30 gallon tank, also suitable for both saltwater and freshwater.
  • Accurate Temperature: Temperatures from 68°F to 93°F (20°C - 34°C), come with a thermometer sticker, convenient to detect the water temperature...
  • Long Service Life: Adopt 8-slot multi-branched heating wire ceramic frame, shorter length, 9.5*1*1 in(24.5*2.5*2.5 cm), better heat dissipation, and...
  • Complete Accessories and Warranty: Except for thermometer, also equipped with 3 suction cups, one for replacement, and offer 12 months warranty, leave...
SaleBestseller No. 15
VIVOSUN Aquarium Heater 50W/100W/200W/300W/400W/500W Submersible Titanium Fish Tank Heaters with...
  • Precise Temperature Control: An intelligent IC chip controls the heater’s temperature, keeping the temperature difference within ±1℃/±2ºF; It...
  • Titanium Aquarium Heater: Made with IP68, the highest waterproof level, and a titanium tube that features explosion-proof and anti-corrosion...
  • External Temperature Controller: The touch-button controller adjusts the temperature without getting your hands wet; It’s easy to control the temp...
  • Easy to Setup: The 300W submersible heater is suitable for 31 to 75 gallons aquariums; Install it vertically or horizontally and ensure the device is...
  • Wide Compatibility: The fish tank aquarium heater has CE, FCC, and ROHS certification and the plug has a UL certification; It’s compatible with...
SaleBestseller No. 16
Eheim Thermocontrol e75 Heater, Black (AEH3633090)
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary...
  • Item Package Height: 3.0
  • Item Package Length: 20.0
  • Item Package Width: 3.0
Bestseller No. 17
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...
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
Bestseller No. 18
Fluval M100 Submersible Heater, 100-Watt Heater for Aquariums up to 30 Gal., A782
  • Aquarium heater that blends into the aquarium environment with built-in reflective technology that mirrors the surrounding colors
  • Computer-calibrated thermostat and easy-to-adjust temperature control dial
  • Shock resistant Borosilicate glass and high density ceramic heat sick
  • Easy to install with slim profile tube for easy placement
Bestseller No. 19
Eheim Jager 250W TruTemp Submersible Heater 17”
  • Features shatterproof glass construction
  • TruTemp dial adjusts from 18° to 34° C (65° to 93° F)
  • Thermo safety control enables "running dry" protection
  • On/off indicator light verifies heater functions
  • Includes mounting bracket and suction cups
Bestseller No. 20
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...
  • Item Package Height: 3.0
  • Item Package Length: 20.0
  • Item Package Width: 3.0

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FAQ:

Q: Are Eheim aquarium heaters any good?

A: Eheim consistently makes great products and doesn’t disappoint. I’ve had this heater since 2014 (5 years) and it still works fine. It’s exactly accurate, but then again, no aquarium heater ever is. This heater is very reliable an still decently accurate. Also it doesn’t fry your fish like many cheap heaters.

Q: What is the best aquarium heater for home use?

A: For home aquariums up to 15 gallons in size, our top pick is the FREESEA Aquarium Heater Fish Tank Submersible Heater (view at Amazon). It’s well priced, reliable, and has a large LED temperature display. Those with smaller tanks should consider the Eheim Jager Aquarium Thermostat Heater (view at Amazon).

Q: Is the EJ aquarium heater accurate?

A: It’s exactly accurate, but then again, no aquarium heater ever is. This heater is very reliable an still decently accurate. Also it doesn’t fry your fish like many cheap heaters. I bought the 100W EJ heater because the temp could be adjusted. Wrong, the two dials are both too small to turn with any accuracy and the red dial is impossible to turn.

Q: Can you put a submersible heater in aquarium water?

A: Submersible aquarium heaters can be fully immersed in the aquarium water. It is important that you keep the heater off of the gravel, as the difference in heat conductivity between the water and the gravel could result in the glass of the heater cracking. How often should I replace the aquarium heater?