For many owners of heritage or monumental buildings, heating their homes efficiently and sustainably is a significant challenge. Proper insulation is often difficult or extremely costly, conventional heat pumps don’t meet the heat demand and/or high temperatures required, and outdoor units are either not allowed or aesthetically undesirable. Yet, these homes still need reliable, comfortable heating – preferably with lower gas consumption and lower impact on the environment. That’s the real “job to be done” for people like Leo van de Wouw.