Energy Efficiency

Heat pumps twice as efficient as fossil fuel heating – study

Heat pumps twice as efficient as fossil fuel heating - study

Photo: Freepik

Published

September 14, 2023

Country

Comments

comments icon

0

Share

Published:

September 14, 2023

Country:

Comments:

comments icon

0

Share

A new study has found that heat pumps are twice as efficient as fossil fuel heating, even at lower temperatures, highlighting their significance in reducing dependence on fossil fuels.

Heat pumps can be multiple times more efficient than oil, gas, or electric heating, according to the study, conducted by the University of Oxford and the Regulatory Assistance Project.

The authors of the study, published in the journal Joule, note that heat pumps have become a crucial technology in the transition to a clean and reliable energy supply and are pivotal for the future of heating.

The analysis demonstrated high performance even at low temperatures. The authors noted that heat pumps operate two to three times more efficiently than combustion heating or electric resistance heating technology.

Heat pumps operate two to three times more efficiently than combustion or electric heating

Heat pumps harness energy from nature and exploit temperature differences. Energy sources for heating include the ground, groundwater, or the external air.

The primary indicator of heat pump efficiency is the Coefficient of Performance (COP) – the ratio of input energy to heat output. The higher the COP, the more efficient the heat pump.

An average COP of 3 to 4 is common for household applications. It means that 3 to 4 units of heat are created from each unit of electricity used. Heat pumps utilizing groundwater have the highest COP, followed by those using the ground source and the air source.

Heat pumps are sufficient for heating in moderate climate

The authors analyzed data from seven field performance studies of air-source heat pumps in a moderate climate, where the average January temperature is above minus 10 degrees Celsius.

Between 5 and minus 10 degrees Celsius, the COP was 2.74, meaning that heat pumps have significantly higher efficiency than fossil fuel and electric heating systems, according to the authors.

The study concluded that even air-source heat pumps, which are the easiest to install, are suitable for temperatures below freezing.

Study demonstrates heat pumps’ efficiency in extremely cold climates

The study demonstrated the efficiency of heat pumps in extremely cold climates, showing they are twice as efficient as electric heating systems.

In extremely cold climates heat pumps are twice as efficient as electric heating systems

Efficiency does decline in extremely cold conditions. However, the authors note that heat pumps can be a backup heating option. The results show that a COP between 1.5 and 2 can be achieved even at extremely low temperatures, such as minus 30 degrees Celsius.

Heat pumps utilize stable and consistent ground temperatures throughout the year, providing a high level of efficiency in cold conditions, the authors explained.

In Europe, colder countries have been using them for decades. In 2021, Norway had slightly over 60 heat pumps per 100 households, followed by Sweden and Finland (with around 45 each) and Estonia (35).

In 2021, Norway had over 60 heat pumps per 100 households

The authors also point out that about 80% of European households are in countries where average January temperatures do not fall below zero. They also emphasize that the broader adoption of air-source heat pumps is a realistic option for decarbonization.

Comments (0)

Be the first one to comment on this article.

Enter Your Comment
Please wait... Please fill in the required fields. There seems to be an error, please refresh the page and try again. Your comment has been sent.

Related Articles

Minister Admir Sahmanović formally assumes energy, mining portfolio in Montenegro

Minister Admir Šahmanović formally assumes energy, mining portfolio in Montenegro

17 April 2025 - Minister of Energy and Mining of Montenegro Admir Šahmanović was formally voted in as the two ministries that he ran were merged

croatia businesses grants government FZOEU renewables

Croatia grants EUR 30 million to firms for renewables, energy efficiency

16 April 2025 - The government approved EUR 30 million in grants to businesses for investments in renewable energy production and energy efficiency measures

Eurowind Energy completes its 60 2 MW solar park in Romania

Eurowind Energy completes its 60.2 MW solar park in Romania

15 April 2025 - Eurowind Energy's 60.2 MW photovoltaic park in Transylvania will be put into operation in late April, Minister Sebastian Burduja said

Bulgaria suspends ill designed solar energy support program

Bulgaria suspends ill-designed solar energy support program

14 April 2025 - In a suspended scheme for solar thermal collectors and PV panels, beneficiaries need to buy and install them, and then they get reimbursed