Report

Replacement of Gas Boilers with Heat Pumps, District Heating, and Hybrid Solutions: Report on the Shift Away from Natural Gas in Buildings

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This report presents an overview of the most important issues which building managers, owners, and HVAC engineers should consider when shifting from natural gas to other (preferably RES) energy generators.

This report describes these issues from a general point of view which is applicable in various climatic conditions and for different heating sources (including those currently under development) for heating, DHW, or other purposes. Strong emphasis is placed on energy efficiency of existing HVAC systems and retrofit measures that will be conducive to the easy transition to carbon neutral buildings in the future, if not already the case.

Authors: Tomasz Cholewa, Cristiana Croitoru, Livio Mazzarella, Francesca Romana d'Ambrosio, Cătălin Lungu, Alicja Siuta - Olcha, Michal Krajcik, Risto Kosonen, Jarek Kurnitski, Łukasz Amanowicz, Marija Todorovic, Christian Schauer, Ilinca Nastase, Robert Sekret

Reviewers: Anna Bogdan, Jaap Hogeling, Olli Seppänen

The European Commission's strategic long-term vision for "A Clean Planet for All" includes the ambitious goals of achieving climate neutrality and meeting the United Nations Sustainable Development Goals by 2050. One of the key challenges in meeting these goals is the decarbonization of the building sector, which is a significant source of greenhouse-gas emissions and one of the the single largest consumers hampering Europe’s energy sovereignty of grid energy.

To address this challenge, REHVA published this report written through a REHVA task force, that explores the potential of heat pumps, district heating, and hybrid solutions as replacements for gas boilers, which are a major source of emissions in the building sector.

The report highlights the potential benefits of transitioning away from natural gas in buildings, including reductions in greenhouse-gas emissions, improved air quality, and increased energy efficiency. It also provides recommendations for policymakers, building owners, and industry stakeholders on how to support the transition to these alternative heating solutions.

Overall, the report is an important contribution to the ongoing effort to decarbonize the building sector and achieve the European Commission's goals for a cleaner, more sustainable future. By embracing new technologies and innovative solutions, we can create a more resilient and environmentally friendly built environment for generations to come.