European nations// Hidden Stories SeriesAir-source heat pumps could be about to retrofit EuropeOctober 23, 2023In many homes across Europe, nestled amidst kitchen essentials or hidden away in utility rooms and cupboards, gas and oil boilers have been long-time sentinels of comfort.At their naissance, they heralded a new era—ushering central heating and instantaneous hot baths into homes, obviating the laborious coal …