When is it best to choose a high-temperature heat pump?

Added: Tuesday, 9/26/2023


In times of drastic increases in the prices of solid fuels and natural gas and the constant tightening of emission standards, the choice of heating system is crucial for obtaining an effective and, importantly, timeless heating installation. Investors planning to build a house or wanting to get rid of old boilers have a choice of various solutions. Year by year, interest in heat pumps is growing. Heat pumps are modern, efficient and pro-ecological heating devices. Models available on the market differ, among others, in the supply temperature. You can choose between high-temperature and low-temperature heat pumps. Find out when the most energy-efficient solution will be a high-temperature heat pump.

The installer connects the heat pump in the garden

Check out high-temperature heat pumps at the Onninen wholesaler

What is a high temperature heat pump?

A high-temperature heat pump is a heating device equipped with technology that allows water to be heated to much higher temperatures than in the case of a traditional, low-temperature heat pump. A high-temperature heat pump is able to supply water for central heating and sanitary purposes (domestic hot water) at a temperature of 55-65 o C and higher - even up to 70-80 o C depending on the model. Even at very low outside temperatures, such a system is characterized by high efficiency. In severe frost, high-temperature heat pumps allow for achieving the best COP coefficients, because most of the thermal energy comes from the lower source.

What is the difference between a high temperature and low temperature heat pump?

A heat pump transports heat from a low-temperature lower source to a heating system. To ensure maximum energy efficiency, it is necessary to supply heat receivers with supply water at an appropriate temperature. The difference between a high-temperature and a low-temperature heat pump is precisely in achieving a different outlet temperature. Compared to a high-temperature pump, a low-temperature device achieves an average of 35-40°C. Therefore, it needs a larger heat exchange surface in the form of, for example, underfloor heating. It should be noted that both types of heat pumps are able to provide users with optimal thermal comfort, a sufficient amount of hot utility water and the lowest possible heating costs. The practical difference lies in the application/purpose of the devices.

High-temperature heat pump Nibe-Biawar S2125-12 - 8.2 kW, 3-phase, 400 V, R290 The high-temperature heat pump is recommended for investors who want to invest in a new heat source with a high energy efficiency class, without replacing the entire system. The high-temperature device can replace, for example, an outdated gas boiler and work with the existing pipe system and traditional ribbed radiators that require water at temperatures of up to 65°C. It is also great for heating industrial facilities and public utility places.

On the other hand, a low-temperature heat pump provides efficient power supply for low-temperature installations. It is designed for buildings with surface heating, such as underfloor, ceiling or wall heating. For full efficiency and profitability, a low-temperature system requires very good thermal insulation, and effective home insulation is not the domain of old buildings.

How much does it cost to install a high-temperature heat pump?

The price of a high-temperature heat pump and its installation is influenced by various factors. A high-temperature air -source heat pump of the monoblock type, i.e. installed entirely outside the building, costs around PLN 35-45 thousand. The compressor, heat exchanger, fan and other elements are located in one housing. A much cheaper, but much more expensive to install and operate, is a split heat pump. It consists of an external and internal unit, between which, in copper pipes, a gaseous working medium circulates.

You have to pay more for a model equipped with an automatic evaporator defrosting system or one that allows remote control via a mobile application. You have to spend an additional PLN 25,000-40,000 on installing an air heat pump and purchasing and installing other necessary and optional elements of the heating system. You will usually find out the total cost of purchasing and installing a high-temperature air heat pump after conducting an audit. Remember that you can significantly reduce the investment price by using government subsidies. For example, an air-to-water heat pump with an improved energy class is subsidized by over PLN 19,000. That is practically half.

What are the advantages of a high temperature heat pump?

High-temperature heat pump LG split - 16kW Most old buildings are not adapted to integration with low-temperature heating. Designed to work with high temperatures, high-temperature pumps are an ideal heating solution for buildings from decades ago. They successfully replace old gas, oil and coal boilers. They are easily integrated with typical radiators, which require an input temperature of approx. 50-65°C to heat rooms. The entire system is not changed, only the heating device itself. Previously used heat receivers remain in place. You can enjoy a modern, economical, environmentally friendly heating system without the need for comprehensive thermal modernization and general renovation. The temperature in the rooms will be stable and in line with demand, and the cost of heating a single-family house with such a system in many cases does not exceed PLN 2,000 per year.

High-temperature heat pumps are also distinguished by their versatility. They are used not only in residential buildings, but also in industrial plants and storage facilities where high levels of heat are required. What's more, they are suitable for both heating and cooling rooms, acting as both a heating and air-conditioning system.  

A high-temperature air-source heat pump can work with an additional heat source, e.g. a class biomass boiler, to create a hybrid heating system.

Radiators combined with a high-temperature heat pump

A high-temperature heat pump is combined with older, traditional radiators (e.g. cast iron), which require a much higher supply temperature compared to underfloor heating to ensure optimal thermal efficiency. In the case of modern low-temperature radiators, a more economical low-temperature heat pump will be a better solution.

High-temperature heat pumps at the Onninen wholesaler

At the Onninen installation wholesaler you will find high-temperature heat pumps with top-class energy efficiency. These are intelligent, automated devices that save energy, ensure low operating costs and have compact designs. They require minimal space for installation. We only work with renowned heat pump manufacturers such as LG and Nibe-Biawar .

High-temperature heat pump LG 16 kW, 1-phase, 230 V The declared parameters and long-term service life of the heating device are confirmed by certificates. We provide a guarantee for each product. When buying a high-temperature heat pump at Onninen, you can benefit from the support of experts. We will help you choose a model that meets your needs and installation conditions. You will gain the certainty of heating comfort and real savings.

We support our clients at every stage: from purchase, through start-up, to use. Our offer includes solutions dedicated to larger buildings, including industrial plants and warehouses, where high water temperatures are required for heating applications. They are highly efficient, economical and easy to install.

Are you interested in a specific model of a high-temperature heat pump? Are you wondering what is included in the set and what is worth buying and what needs to be purchased additionally? Contact us! We will answer your questions, dispel your doubts, and advise you. Are you a professional? Ask about a special offer for a heat pump installer.

Check out high-temperature heat pumps at the Onninen wholesaler