Pool heater with solar energy

Solar products use the power of the sun in an intelligent way, which provides enough light and thus energy even on colder days. Solar mats and solar collectors from Steinbach are environmentally friendly tools for heating pool water.

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Frequently asked questions for Solar:

In general: For every 1 m difference in height (installation height top edge solar system / filter system) the pressure in the filter tank increases by 0.1 bar. This additional pressure not only reduces the performance of the filter pump, but can also damage the vessel in extreme cases. If you have a performance diagram for the filter pump (only for sand filter systems) check the effect of the additional pressure. The main question is not whether the vessel will burst, but whether there is still sufficient circulation with the existing filter system. For sand filter systems, we recommend a maximum height difference of 2 m. For cartridge filter systems, we recommend that you start with 1 piece of solar collector and slowly expand. Attention! A cartridge filter system does not have the same pump pressure as a sand filter system. In many cases, it already stops with one collector connected. These filter systems are not designed to pump upwards. Place the collector directly next to the filter system on the ground.

The solar mats must be connected after the filter system and then the filter system must be switched on.

The solar mats and solar collectors only function with solar radiation, the black containers/ mats are heated exclusively by solar radiation. The pool water must be pumped through the mats/collectors with the filter system, which is then heated there.   

Check that all connections are correctly connected. Switch on the filter system. Use the maximum possible solar radiation and increase the running time of the filter pump. Cover the pool overnight to prevent heat loss.

In many solar systems, the diameter for the water flow is reduced and with it the entire circulation capacity of the existing filter system. To eliminate this potential problem in advance, we recommend using a bypass set. This not only regulates the heating output, but also specifically controls the water flow.

Heating the pool with solar energy

The solar collectors and solar mats from Steinbach and INTEX heat the pool water in an environmentally friendly way using the power of the sun. There are therefore no additional costs for the continuous supply of energy.

The ideal location for solar heating systems of any kind is sunny, flat and south-facing in order to capture the maximum amount of sunlight and thus make the best possible use of the energy. The solar mats or solar collectors are connected after the filter system. For a higher heating capacity and depending on the desired temperature, several elements can be connected. The more elements are installed, the faster the pool water is heated. The larger the pool, i.e. the more litres of water your pool requires, the longer it takes to heat the pool to the desired temperature. The heating power varies depending on the weather conditions and the initial temperature. Additional measures, such as the use of solar panels, improve the heating result, as they help to store the heat of the water.

Please make sure that you have sufficient sunny space available for solar mats and solar collectors. The more elements are placed next to each other, the larger the required flat surface is.


The prerequisite for the installation of a solar heating system is that the pool and filter system are properly installed and functional. A water drain hose and a water inlet hose are necessary for correct functioning. The use of a bypass set is recommended for optimal connection. The bypass is used for targeted control of the water flow and is used for both heat pumps and solar systems. Whether a bypass set is required to operate the solar heating system can be easily read off the pressure gauge of the sand filter system. If the operating pressure increases by 1 to 2 lines, a bypass set should be used. Too high an operating pressure reduces the performance of your sand filter system.