There are various ways to heat a pond, but this is usually done using a device with a heating element in the filter circuit. Heating a pond properly costs around £450 per year.
This solution is simpler. The heat exchanger only needs to be placed in the water. The heating coil is made entirely of stainless steel (V4A) and does not cause any back pressure in the system; the water flows around the heating element to ensure maximum heat transfer. 
 

15 kW: up to 10 m³ pond volume
30 kW: up to 30 m³ pond volume

These heating coils can be easily connected to your home heating system or solar systems with a 12/20 mm connection. The heating coils are so effective because they transfer all of their heat to the colder water. The installation of a thermostat is recommended. The heating coils can be used anywhere in the system, whether in the pre-filter, filter, plant filter, drum filter, screen filter, etc. 

Heating coils – efficient heating solution for ponds and filter circuits

Heating coils are heating elements made of stainless steel (usually V4A) that are integrated directly into the water or filter circuit. They generate heat through a resistance effect and transfer it completely to the water without causing any significant back pressure. Such coils are often used in koi ponds – typically in power ratings such as 15 kW for ponds up to about 10 m³ or 30 kW for larger volumes. A maximum operating pressure of about 5 bar is common, and use in salt water (e.g. koi ponds with added salt) can pose corrosion risks.

Installation, power selection and practical tips for use

The heating coil can be installed flexibly: it can be mounted in front of the filter, in the filter itself or in the inlet pipe. A thermostat is important for control and protection against overheating. When selecting the power, the pond volume and heat loss (due to cover, wind, cold) should be taken into account. The heating coil should be dimensioned so that it can maintain a constant temperature – oversizing wastes energy, while undersizing shows weaknesses on cold days. In addition, care must be taken to check and clean the coil regularly to prevent deposits and malfunctions. It is recommended to consult a heating specialist.
Do you have questions about pond supplies and technology?
We are available for you!
Monday to Friday: 9 a.m. to 5 p.m.

Maximum operating pressure 5 bar

The use of salt in koi ponds can cause rust damage.

Model Installation size (cm) incl. connections Connection
15kW 12x4712 mm
30 kW 22x59 22 mm

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