Eheim ThermoControl Electronic Aquarium Heater

With the EHEIM ThermoControl electronic heater series, your aquatic environment maintains the perfect temperature with exceptional precision and reliability. Designed to be simply hung in the water, these ultra-modern heating devices combine proven principles with advanced technology to ensure stable and accurate temperature control for aquariums ranging from small to very large volumes.

The heater features precise temperature adjustment from 20 to 32 °C, with an outstanding control accuracy of ± 0.5 °C, eliminating the need for readjustments. Intelligent electronics continuously measure and maintain the set temperature, providing consistent warmth that your fish and aquatic life can depend on. A clear control lamp signals the heating status—red when warming up and green once the desired temperature is reached. 

Constructed with a special laboratory glass coating, the heater’s surface area is increased to optimize heat emission while serving as a heat shield for even distribution. This robust design is fully submersible and waterproof, ensuring safe operation in both freshwater and marine aquariums. Equipped with dry-running protection (Thermo Safety Control), it prevents damage in case of water level changes, enhancing safety and durability. 

Each heater comes with a convenient 170 cm cable and a double suction holder for easy and secure installation. Available in multiple sizes, they accommodate aquariums from about 20 up to 1200 litres, making it easy to find the perfect fit for your setup. Manufactured in Germany, these heaters combine highest safety standards and reliability, backed by a 3-year warranty for your peace of mind. 

Experience the perfect balance of simplicity and innovation with a heater that delivers consistent, precise temperature control to support a healthy and thriving aquatic environment. Whether for freshwater or saltwater tanks, this heating solution ensures your aquatic pets enjoy optimal comfort all year round.

25 W for Aquaria from 20 up to 25 l, Total length: 233 mm
50 W for Aquaria from 25 up to 60 l, Total length: 233 mm
75 W for Aquaria from 60 up to 100 l, Total length: 260 mm
100 W for Aquaria from 100 up to 150 l, Total length: 309 mm
125 W for Aquaria from 150 up to 200 l, Total length: 309 mm
150 W for Aquaria from 200 up to 300 l, Total length: 335 mm
200 W for Aquaria from 300 up to 400 l, Total length: 396 mm
250 W for Aquaria from 400 up to 600 l, Total length: 442 mm
300 W for Aquaria from 600 up to 1000 l, Total length: 496 mm
400 W for Aquaria from 1000 up to 1200 l, Total length: 496 mm