Busting heat pump myths for a sustainable future

Heat pumps get our hearts pumping. They offer a compelling solution to reduce carbon emissions and can help us tap into flexibility potential and integrate renewables. This is why these innovative devices play a crucial role in the REPowerEU initiative, which aims to bring the EU towards a greener and more sustainable future. Heat pumps have emerged as a groundbreaking technology in the fight against climate change, but despite their potential, some people still harbor misconceptions and doubts about them. What about their efficiency, their environmental impact, their longevity, and their maintenance? And can they even be installed in your home? We will now debunk the most common myths and reveal the truth behind this revolutionary technology.

 

Myth #1: Heat pumps are not efficient

Say what? Heat pumps are designed for efficiency and can deliver three kWh of heat for every kWh of electricity consumed. Air-source heat pumps, in particular, are significantly more efficient than traditional electric resistance heating. Technological advancements have improved their performance, making modern heat pumps capable of delivering exceptional performance even in frigid conditions.

They have proven their efficiency in countries with harsh winters, such as Norway, where more than half of households have heat pumps installed. Field data from various countries, including the UK, Germany, Switzerland, Canada, the US, and China, further supports the outstanding performance of heat pumps in cold temperatures. Although backup systems might be necessary for extremely cold conditions, such situations are rare in most regions. Modern heat pumps have improved significantly and can effectively provide sufficient heating, even when outdoor temperatures reach -30°C. For moderate temperature fluctuations and cold winters, heat pumps can be the primary heating source without the need for a backup system.

 

Myth #2: Heat pumps make your electricity bill explode

Heat pumps for sure increase your electricity bill, but there are easy ways to actually save money. The cost-effectiveness of a heat pump depends on two important factors. First, the technology mix plays a crucial role in keeping bills low. Combining a heat pump with a rooftop PV system and/or a battery can lead to significant cost reductions. Regarding energy prices, the good news is that heat pumps can be scheduled. Therefore, it is highly beneficial to select quarterly hour-based supplier tariffs and optimize the heat pump operation according to market prices. During weekends and sunny hours, electricity costs are close to zero and prices also remain low during off-peak night periods. To benefit from such low electricity prices, a service provider or a good IT system can assist in setting up an ideal consumption scheme. 

 

Myth #3: The environment suffers as heat pumps draw a lot of fossil fuel electricity

Currently, many heat pumps are powered by grid electricity that is still produced by a majority share of fossil fuels. But that will soon change, since heat pumps are a driver for renewable energies as they tend to be installed together with a suitable PV and battery system. The transition to cleaner energy sources, like substantial additions of renewable energy to the grid, reduces the carbon footprint associated with heat pump manufacturing. Heat pumps offer a viable and environmentally friendly option for heating, contributing to the overall reduction of carbon emissions in the long run. 

 

Myth #4: Heat pumps won't work in multi-unit and older buildings

Heat pumps can work in all types of existing buildings, and extensive renovations are not always necessary for installation. Some also claim that  heat pumps can’t be used in multi-unit buildings, but this is simply not true - they can even be installed in tower blocks. Large heat pumps have the capacity to fuel district heating networks and serve multiple apartments. With their versatility, they offer a suitable heating option for various building sizes, from large complexes to small apartments. While good insulation can improve energy efficiency and reduce running costs, it is not a mandatory requirement for installing a heat pump system. Studies and field testing conducted by the Fraunhofer-Institut für Solare Energiesysteme ISE have confirmed that heat pumps can operate reliably and efficiently in existing buildings of all types.

If installed, heat pumps can actually increase the value of properties with their energy-efficient features. Studies show that energy efficiency improvements can raise property prices by 3-8%. The real estate market reflects the growing demand for energy-efficient properties, making heat pumps desirable and sought-after solutions.

 

Myth #5: Heat pumps are noisy, expensive and untested

• Older models of heat pumps may have produced noticeable noise, but advancements in technology have reduced operating noise significantly. Ground source heat pumps, in particular, are quiet due to their underground location. Air source heat pumps have also improved, with quieter compressors and fan systems, providing a more peaceful operation.
• The cost-effectiveness of heat pumps depends on system efficiency and energy prices. Combining heat pumps with rooftop PV systems and batteries can lead to significant cost reductions. Scheduling heat pump operation based on market prices can further optimize energy consumption and save money.
• Some people stay firm in believing that their gas boilers are still more energy-efficient than heat pumps, but what they may not know is that heat pumps are widely recognized as one of the most energy-efficient heating methods. While modern high-efficiency gas boilers can achieve AFUE ratings of 90% or higher, heat pumps outperform them in terms of overall efficiency, especially when powered by renewable energy sources.
• Also, heat pumps have been in use for decades and have undergone extensive testing and development. The technology is well-established and widely adopted worldwide, offering a reliable and durable heating solution.

We stand firm in that heat pumps are indeed a game-changer in the world of heating, offering higher efficiency and lower energy costs for households and businesses alike. By challenging preconceptions and embracing this revolutionary technology, we can contribute to a cleaner, more sustainable future. With their exceptional performance, versatility, and environmental benefits, heat pumps are a key element in the transition to a greener energy landscape. Embracing heat pumps is not just a step towards reducing carbon emissions; it's a leap towards a cleaner and more sustainable future for generations to come.