Choosing a heat pump – what parameters are most important?

Choosing the right heat pump is the key to efficient building heating. These modern devices, using energy from renewable sources, are an eco-friendly and cost-effective solution. They extract heat from the surroundings – air, water or ground – which can significantly reduce running costs and lower CO₂ emissions. When selecting a heat pump, you need to take into account the building’s specifics and its energy demand. Every property has different needs, which is why key parameters such as heating capacity, the COP and SCOP coefficients, and the type of unit (air, ground, water) require careful analysis. The right choice will ensure thermal comfort and optimise operating costs. You should also not forget the importance of thermal insulation. Well-insulated walls, roof, and energy-efficient windows make better use of energy possible, which directly affects system performance. It is also worth considering combining a heat pump with other solutions, such as underfloor heating manifold or photovoltaic panels, to create an even more efficient system. Modern technologies, such as smart control or energy storage, can further increase the efficiency of the whole set-up. Properly selected solutions are not only savings, but also greater energy independence.

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Plate Heat Exchanger NORDIC Ba-27-70 1 1/4" 390kW

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Plate Heat Exchanger NORDIC Ba-60-70 1 1/4" 765kW

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Plate Heat Exchanger NORDIC Ba-32-30 1" 175kW

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How does a heat pump work and why is it worth choosing?

A heat pump is a modern heating device that is growing in popularity. It is efficient, eco-friendly, and can significantly reduce heating bills. Its operation is based on a thermodynamic cycle – instead of generating heat, it extracts it from the surroundings (air, water or ground) and transfers it into the building. This is an intelligent and energy-efficient solution. One of the main reasons to consider installing one is high energy efficiency. By using renewable energy sources, a heat pump can significantly reduce heating costs compared to traditional systems such as gas or oil boilers. This is not only a saving, but also a step towards a more eco-friendly lifestyle. Heat pumps also stand out for their versatility. They work well both in single-family homes and in large commercial buildings. They operate quietly, and their integration with other renewable systems, e.g. photovoltaic panels, makes them a future-proof solution for those looking for modern heating technologies. The ecological aspect is also important. Heat pumps help reduce carbon dioxide emissions, which is crucial in the fight against climate change. They make it possible to reduce a household’s carbon footprint and become less dependent on rising fossil fuel prices. This is not only energy saving, but also an investment in modern construction and a more sustainable future.

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Plate Heat Exchanger NORDIC Ba-95-30 2" 700kW

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Plate Heat Exchanger NORDIC Tec Ba-27-90 1 1/4" 500kW

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Plate Heat Exchanger NORDIC Ba-95-50 2" 1250kW

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Key technical parameters when selecting a heat pump

Choosing the right heat pump requires analysing several key parameters that affect the unit’s efficiency and its running costs. One of the most important factors is heating capacity, i.e. the amount of thermal energy delivered to the building. This is what determines heating effectiveness, so matching it correctly is crucial for thermal comfort. Equally important is the COP coefficient (Coefficient of Performance), which defines the ratio of heat delivered to electricity consumed. The higher its value, the more efficient the unit operates. It is also worth paying attention to the SCOP coefficient (Seasonal Coefficient of Performance), which takes into account changing weather conditions during the heating season, providing a fuller picture of the heat pump’s efficiency at different temperatures. Selecting the right model should consider the building’s characteristics – its floor area, the quality of thermal insulation, and its energy demand. The right technical parameters affect not only system performance, but also long-term running costs. That is why it is worth taking the time for a thorough analysis and consulting an expert about your choice.

Heat pump heating capacity – how to choose it?

Selecting the heating capacity of a heat pump is a key element that affects the efficiency of the entire heating system. To determine the appropriate capacity, several factors must be considered:

1. Building floor area – the larger the space to be heated, the higher the heat pump capacity required.
2. Quality of insulation – a well-insulated building requires less heating capacity than a property with poor insulation.
3. Energy demand – dependent on the climate, number of occupants, and how the building is used.

A heat pump with too high a capacity may operate inefficiently, which leads to higher running costs. On the other hand, a unit with too low a capacity may not provide sufficient heating, forcing the system to start up more frequently and increasing energy consumption. It is therefore crucial to match capacity precisely to the building’s actual needs. Properly selected heat pump capacity not only ensures optimal system operation, but also affects occupant comfort and savings on energy bills. It is worth using the help of specialists who, based on detailed calculations, will help select a unit best suited to individual needs.

COP and SCOP – what do they mean and how should you interpret them?

The COP and SCOP coefficients are key heat pump efficiency indicators that help assess performance and cost-effectiveness.

1. COP (Coefficient of Performance) – defines the ratio of the amount of heat delivered to the electricity consumed. The higher the value, the more efficient the unit and the lower the running costs.
2. SCOP (Seasonal Coefficient of Performance) – takes seasonal temperature changes into account, providing more realistic data on the heat pump’s efficiency in different weather conditions.

The basic difference between COP and SCOP is that SCOP provides a fuller picture of how the heat pump works throughout the year, and not only under optimal test conditions. A high SCOP value means that the heat pump will be efficient even in more challenging conditions, which can translate into real savings. That is why, when choosing a unit, it is worth looking at both indicators to make an informed and beneficial decision.

Types of heat pumps – which one should you choose?

Choosing the right heat pump is a key step in ensuring efficient and economical building heating. Various types of these devices are available on the market, differing in energy source and installation method. The most commonly used include air, ground, water, and hybrid heat pumps. Each of these options has unique features that can determine their suitability in specific conditions. Air heat pumps are a popular choice due to the relatively low purchase cost and ease of installation. This is an ideal solution for those who want to avoid complex groundworks. Ground source heat pumps, in turn, offer higher energy efficiency, but their installation requires higher upfront expenditure and suitable ground conditions. Water heat pumps and hybrid systems work well in specific situations, e.g. where a stable groundwater source is available.

Air-to-water heat pump – the most popular choice

Among the available options, it is the air-to-water heat pump that attracts the most interest. Why? Primarily because of ease of installation and good efficiency in a moderate climate. The unit extracts energy from the air and uses it to heat water in the central heating system and to produce domestic hot water. As a result, it works well both in single-family homes and in smaller commercial buildings. It is worth remembering, however, that at very low temperatures air source heat pumps may require support from an additional heat source, e.g. an electric heater or a gas boiler. Even so, their relatively low price and quick, uncomplicated installation mean they are often chosen by investors looking for an efficient and economical heating solution.

Ground source heat pump – when is it worth choosing?

If stability and high energy efficiency are the priority, a ground source heat pump may be the best choice. It uses heat stored in the ground, which makes it possible to maintain stable performance regardless of weather conditions. As a result, it works very well in buildings that require a reliable heating system all year round. However, installing a ground source heat pump involves higher initial costs and the need for groundworks. It also requires sufficient space on the plot, which can be a challenge in densely built-up areas. Even so, long-term benefits, such as lower running costs and stable efficiency, mean it can be an investment that pays off over the longer term.

The impact of a building’s thermal insulation on heat pump efficiency

Effective thermal insulation is the foundation of energy efficiency and the key to optimal heat pump operation. The better the building is insulated, the less energy is needed to maintain a comfortable temperature, which translates into lower heating bills. Well-insulated walls and tight windows allow the heat pump to operate more efficiently, minimising heat losses. Better thermal insulation is not only a saving, but also a longer service life for the unit. When a building retains heat effectively, the heat pump does not have to run at maximum capacity, which reduces energy consumption and the risk of faults. The result? Stable heating system operation and thermal comfort even on frosty days. Building insulation also affects the selection of the heat pump’s parameters. The level of insulation determines energy demand, which is crucial when choosing the unit capacity. That is why, before installing a heat pump, it is worth ensuring solid building insulation – it is an investment that pays dividends for years. No less important is appropriate insulation for the heat exchanger, which helps reduce energy losses during heat transfer in the heating system. Proper insulation protects heat exchangers against cooling and improves their performance, which directly affects the efficiency of the entire installation. Modern heat exchangers for heat pumps are responsible for effective heat transfer between the lower and upper source, and their correct selection and insulation make it possible to maximise savings and extend the unit’s service life.

How can you improve insulation before installing a heat pump? Here are a few effective solutions:

1. Adding insulation to external walls – reduces heat losses and improves the building’s energy efficiency.
2. Replacing windows with energy-efficient models – modern windows insulate the interior better, reducing heating demand.
3. Sealing doors and eliminating thermal bridges – prevents uncontrolled heat loss and improves thermal comfort.

Each of these actions effectively reduces heat losses, which directly translates into the heating system’s efficiency. The better the insulation, the greater the energy saving and the longer the heat pump’s service life.

What additional factors are worth considering?

Choosing the right air-to-water heat pump is not only a matter of capacity or price. There are many additional aspects that can significantly affect its energy efficiency and user comfort. One of the key parameters is noise emissions. Different models generate different sound levels, which is particularly important in residential buildings. It is worth paying attention to this to avoid intrusive noise that could disturb the peace of household members and neighbours. Equally important is the operating temperature range. Not every heat pump works equally effectively in extreme weather conditions. In areas with harsh winters, choosing a model designed for low temperatures can be crucial for its performance and reliability throughout the year. Another important aspect is the unit’s energy efficiency class. Models with a higher class use less energy, which translates into lower electricity bills. In some cases, subsidy programmes or reliefs may be available – it is worth checking current options and conditions locally. You should also not forget about selecting the right capacity. A heat pump that is too large may operate inefficiently, switching on and off frequently, which increases energy consumption and shortens its service life. On the other hand, a unit with too low a capacity may not provide adequate thermal comfort. That is why it is so important to determine the building’s heat demand precisely and choose a unit with optimal parameters. Modern technologies, such as smart control or integration with photovoltaic systems, can further increase heat pump efficiency. It is worth looking at innovative solutions that will make the heating system even more economical and comfortable.

Read more

• COP of a heat pump – what does it mean and how does it affect efficiency?
• Types of Heat Pumps. Which Type of Heat Pump is the Best for Your Home?
• Which plate exchanger for a heat pump?