AUTHOR=Pekaƙ Libor , Song Mengjie , Mao Ning , Ali Hafiz Muhammad , Wu Wei , Cai Jie TITLE=Editorial: Emerging Sustainable and Energy-Efficient Technologies in Heat Pumps for Residential Heating JOURNAL=Frontiers in Energy Research VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.866466 DOI=10.3389/fenrg.2022.866466 ISSN=2296-598X