EH‑500 External heater 500W 12/16/20mm
External 500W heater with an electronic temperature controller and display, designed for aquariums…
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Find a productProduct description
This external heater is for aquarium keepers who want to mount heating on the outside of the tank circuit rather than inside the water column. It replaces a standard potentiometer with an electronic programmer and display, which gives more precise control over the set temperature in aquariums of 500–1500 l.
Why it matters
- Electronic control: the potentiometer found in typical heaters is replaced by an electronic programmer with a display, which the manufacturer presents as the most failure-prone part removed from the design.
- Programming precision of 0.5°C within a working range of 20–35°C, so the set point can be adjusted in small steps.
- Hose compatibility: the heater fits 12/16, 16/22 and 20/24 mm (inner/outer) hoses, and the matching end caps are included in the box.
- Built-in cleaning brush: a brush supplied with the heater is intended for removing deposits from its interior.
Specifications
- Power: 500 W
- Hose diameters (inner/outer): 12/16, 16/22, 20/24 mm
- Dimensions: 30 cm × 8 cm
- Weight: 0.68 kg
- Working range: 20–35°C
- Programming precision: 0.5°C
- Recommended aquarium volume: 500–1500 l
- Control: electronic, with display
What it works with
The heater is intended for aquariums in the 500–1500 l range and is installed on hoses of an external filtration or circulation system. Its 500 W output and 20–35°C range define the tank sizes and temperature targets it is suited to. Use the included end caps to match the heater to the hose diameter in your setup.
Technical specification
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Frequently asked questions
It is designed for aquariums from 500 to 1500 liters. The heater has a 500 W output.
Yes, the heater is compatible with hoses of 12/16 mm, 16/22 mm and 20/24 mm (inner/outer diameter). Replacement tips for each size are included in the set.
The electronic programmer lets you set the temperature with a precision of 0.5°C. It replaces a mechanical potentiometer, which is a common failure point in heaters of this type.
The set includes replacement hose tips for the different hose sizes and a cleaning brush for removing dirt from the inside of the heater.
The heater measures 30 cm x 8 cm and weighs 0.68 kg. It is electronically controlled and has a display.
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