Heating experts certainly know that both on a global scale and in the micro scale of a single building, pumps play a significant role in the energy balance. Their work, necessary to maintain thermal and utility comfort, can consume as much as 10 to 15% of the electricity used by the household. Why is this happening? Well, we may not be aware of it, but pumps are devices that work for most of the day, regardless of whether anyone is in the building. So how can we save energy used by pumps?
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How to recognize if a circulation pump is energy efficient?
European Commission in the directives for ecodesign ErP (Energy-related Products) specified in detail the requirements for pump efficiency that can be used in the European Union. This regulation ensures that manufacturers will strive to improve installation pumps in such a way that they meet their tasks in terms of pumping, consumed less and less energy. A pump that meets these requirements has an energy efficiency index EEI on its plate, the lower it is, the better it indicates the pump's energy efficiency. Today, the values of this index for leading manufacturers are below 0.2 .
We are proud to announce that all models of Xylem ONNLINE circulation pumps we offer meet these requirements and are among the most economical pumps on the market.
Why is it worth choosing Onnline circulation pumps?
Our idea is to offer high quality products at a reasonable price in our own ONNLINE brand. Thanks to long-term contracts with the supplier, we are able to set an attractive price level for a high quality product that will not disappoint our professional Customer. In the range of pumps offered by our company, in addition to the most recognizable manufacturers in Poland such as Grundfos or Wilo, we also have pumps manufactured by one of the world's leading pump manufacturers: the American company XYLEM , which brings together many well-known pump brands manufactured in factories around the world. For our "ONNLINE" brand, we have chosen a pump manufactured in Europe in a factory in Hungary. Some electronic units are manufactured in Italy and housings are also manufactured in Poland. The EEI coefficient for our ONNLINE pumps is as follows:
| Product number | Designation | Max lifting height | EEI coefficient |
| CNS100 | ONNLINE EQC-S 25-4/180, 1 1/2" | 4m | ≤ 0.16 |
| CNS101 | ONNLINE EQC-M 25-6/180, 1 1/2" | 6m | ≤ 0.17 |
| CNS102 | ONNLINE EQC-M 25-6/130, 1" | 6m | ≤ 0.17 |
| DAH643 | ONNLINE EQC-L 25-8/180, 1 1/2" | 8m | ≤ 0.18 |
How much can you save with the Onnline circulation pump?
The difference between an old, often still used circulation pump with a switch for 2 or 3 speeds and a modern pump with a rotor with neodymium magnets and microprocessor control is similar to that between an old light bulb and an LED light source. Old pumps, depending on the setting, consumed 55-100 W of electrical power, while new ones, with the same water pumping capacity, consumed 4-45 W.
Additionally, the applied electronic control and adaptive systems cause the pump to develop only the power required by the heating system, in other words – it pumps as much as needed and at the right time.
Considering that older pump models used in heating systems consume from 500 to 800 kWh per year, and the new generation Onnline EQC by Xylem pump consumes from 50 to 150 kWh, it is easy to calculate that you can save at least PLN 405 to 585 per year *
*(For the price of 1 kWh = PLN 0.9 – according to the preferential tariff from September 2023 for an average household)
What are the advantages of Onnline circulation pumps?
Circulation pumps are an essential element of every central heating installation. They have many advantages that affect both savings and comfort of use. These include:
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ECM motor – brushless, electronically commutated – enables smooth control of operating speed, - Automatic air bleeding function activated by the knob for approximately 3 minutes, after which the pump automatically returns to the previous operating mode,
- Settings memory - after the voltage is restored (for example during a power failure), the pump returns to work with the last settings,
- Protection against dry running and overheating – an internal sensor that detects too high a temperature and stops the pump and then restarts the pump after reaching a safe temperature,
- Simple operation and compact design – one knob for all functions and operating modes, and a multi-colour diode informing about the operating status, small dimensions of the pump which is low, which makes it easy to fit it in tight spaces of boiler rooms or cabinets;
- Accessories supplied with the pump: thermally insulating splints for the pump body to reduce heat loss, and an easy-to-install electrical plug to connect the device to work.
We invite you to check out the range of products we offer at www.onninen.pl, where you will also find information about current promotions and new products as well as our ONNTOP partner benefit exchange program .