SKU: 52965972966

EHEIM thermocontrol 250 heater

Sale price$166.45 Regular price$184.95
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Ships within 48 hours · Estimated delivery Sep 15 - Sep 20

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Description

EHEIM thermocontrol 250 heaterWith the EHEIM precision heater, your fish will enjoy the perfect temperature in any aquarium. Diameter 36 mm Height 452 mm Performance at 50 Hz 250 Watt Max. temperature 34C Sea water Yes Min. temperature 18C Freshwater Yes Packing dimensions (Width) 6. 5 cm Packing dimensions (Height) 58. 5 cm Packing dimensions (Depth) 5 cm For aquariums up to approx. 600 Liter For aquariums of about 400 Liters Simple ideas often turn out to be the most effective.

With the EHEIM precision heater, your fish will enjoy the perfect temperature in any aquarium.

  • Diameter Ø 36 mm
  • Height 452 mm
  • Performance at 50 Hz 250 Watt
  • Max. temperature 34°C
  • Sea water Yes
  • Min. temperature 18°C
  • Freshwater Yes
  • Packing dimensions (Width) 6.5 cm
  • Packing dimensions (Height) 58.5 cm
  • Packing dimensions (Depth) 5 cm
  • For aquariums up to approx. 600 Liter
  • For aquariums of about 400 Liters

Simple ideas often turn out to be the most effective. Take, for instance, the aquarium heater designed as a rod. This heating rod is easily suspended in the water to warm it. While the concept has remained unchanged for decades, significant advancements have been made over time. Today, the EHEIM adjustable heater represents a state-of-the-art electronic heating device that utilizes the latest technology. Its jacket, crafted from specialized laboratory glass, enhances the heating surface, acts as a heat shield, and guarantees optimal, uniform heat distribution. Whether you need to heat a 20-liter or a 1000-liter aquarium, you can choose from 9 available sizes.

Advantages of the EHEIM thermostatic heaters

  • Accurate temperature adjustment from 18 to 34 °C
  • Easy and secure recalibration (±2 °C)
  • Temperature control precision ± 0.5 °C
  • Heat maintained at a consistent level
  • Heating function indicated by a control lamp
  • Completely submersible (watertight)
  • Features automatic dry run shut-off (Thermo Safety Control)
  • A glass jacket enhances the heating surface and guarantees optimal, even heat distribution
  • Convenient cable length of approximately 170 cm
  • Includes double suction cup holder
  • 9 sizes available for aquariums ranging from 20 to 1000 liters
  • Suitable for both freshwater and marine environments
  • Precision, user-friendliness, quality, and safety “Made in Germany”

The EHEIM aquarium heater is an advancement of the iconic heating rod. The temperature can be set with precision between 18 and 34 °C and can be recalibrated if necessary (±2°). It maintains a constant temperature level, and its heating function is signaled by a control lamp. The rod is fully watertight, can be completely submerged, and includes an automatic dry run shut-off feature (Thermo Safety Control), making it suitable for both freshwater and saltwater aquariums.

One of the most significant innovations is the glass jacket:

  • It expands the heating surface,
  • Concentrates the heat to ensure optimal, even heat distribution, and
  • Acts as a heat shield (safe for your aquatic life).

This jacket is made from specialized laboratory glass, designed for research applications. Therefore, it is free from harmful substances that could leach into the water. It is resistant to both chemical and biological agents, free from fissures or fine cracks that could allow moisture to seep in. Even extreme temperature fluctuations that may occur during water changes will not damage this glass.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52965972966

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Vito
Alexandria, US
★★★★★ 1
Was fun until it broke.
Color: Orange - Maple Wood, Color: Orange - Maple Wood
Broke on the third day after receipt while throwing in soft snow.
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Reviewed in the United States on February 1, 2026
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C. Bennett
Alexandria, US
★★★★★ 5
Durable and loved by my dog.
Color: Red - Bacon
I recently bought this toy for my German Shepherd and Belgian Malinois mix, and I can't express enough how much she adores it. The durability of the material is impressive; it withstands her enthusiastic chewing without showing any signs of wear and tear. Its size is perfect for her to carry around with ease, and it keeps her thoroughly entertained for hours. I've noticed that there’s no color transfer or degradation from her vigorous play, which gives me peace of mind. I can let her enjoy it without constant supervision, as I trust that she won't be able to chew off any little pieces that could pose a choking hazard. All in all, it's an incredible value for the quality, and I’ll definitely be purchasing another one for her in the near future.
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Reviewed in the United States on August 25, 2025
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Verified Purchase
Falconmom
West Palm Beach, US
★★★★★ 5
Great, easy to chew toy!
Color: Orange - Maple Wood
Nice durable chew toy. My English Bulldog loves chewing the ends as well as the middle and the design is easy for him to hold with his paws as he chews
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Reviewed in the United States on December 16, 2025
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Verified Purchase
Tanya
Lexington, US
★★★★★ 5
Durable even with aggressive chewer
Color: Red - Bacon
This one is actually lasting a long time! It’s not his favorite but he still plays with it.
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Reviewed in the United States on April 1, 2026
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Marco
Draper, US
★★★★★ 5
Great product
Color: Multicolor, Color: Multicolor
I have three aggressive, chewing dogs that absolutely love these bones. I've had them for a couple of months and they have yet to break them or damage them. Lots of chewing left.
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Reviewed in the United States on April 28, 2026

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