10 Best aquarium heaters (2025) are essential for maintaining a stable and comfortable environment for your aquatic pets. These heaters come in various types, including submersible, inline, and substrate heaters, each designed to cater to different tank sizes and species. The top-rated models for 2025 feature advanced temperature control, energy efficiency, and safety mechanisms to prevent overheating. Whether you have a freshwater or saltwater aquarium, investing in a reliable heater ensures the health and well-being of your fish and plants.
SALE
−$1.98
EHEIM Jager Aquarium Thermostat Heater 125W
- 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
$28.01
SALE
−$4.95
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
$30.04
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
$33.99
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
$40.48
SALE
−$6.00
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 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: 75W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 15-25 Gallons Height: 10. 3" Power Cord Length: 5. 5'
- Item Package Height: 3.0
- Item Package Length: 20.0
- Item Package Width: 3.0
$33.99
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 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: 125W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 39-53 Gallons Height: 12. 2" Power Cord Length: 5. 5'
- Item Package Height: 3.0
- Item Package Length: 22.0
- Item Package Width: 3.0
$41.93
Eheim Jager Trutemp Aquarium Heater 12" 100 Watt
Eheim Thermocontrol e300 Heater
- The Eheim Thermocontrol e300 Heater is a top of the line aquarium heater designed for use in both freshwater and marine aquariums. Provides precise temperature adjustment from 68°F to 89°F (20 to 32°C).
- Item Package Height: 1.97
- Item Package Length: 2.56
- Item Package Width: 23.03
$50.72
SALE
−$5.46
Eheim Thermocontrol e200 Heater, Black, Wattage: 200W, Model Number: AEH3637090
- Ideal for aquariums between 79 and 106 gallons in size
- Durable, impact-resistant construction
- Suitable for both freshwater and saltwater environments
- Offers precise temperature adjustments between 20°C and 32°C
- Glass jacket increases heating surface area for optimal emission
$50.99
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 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: 150W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 53-79 Gallons Height: 13. 2" Power Cord Length: 5. 5'
- Item Package Height: 3.0
- Item Package Length: 22.0
- Item Package Width: 3.0
$49.99
Last update on 2025-05-03 / Affiliate links / Images from Amazon Product Advertising API