My heat pump was a retrofit to an existing home with a fully functional gas boiler. Being a ductless split system, it did not interfere with the existing basebo

My heat pump was a retrofit to an existing home with a fully functional gas boiler. Being a ductless split system, it did not interfere with the existing baseboard heat in any way. By retaining the boiler I was able to afford the installation of solar panels and the heat pump in the same year and probably reap 85% of the efficiency benefit for a substantially reduced up-front cost.