Practical constraints to following expert advice re: heat pumps

Hi and thank you to everyone who has kindly responded to my recent queries re: heat pump install at my existing 3-story house on border of zone 5/6 (VT-MA). Im… Hi and thank you to everyone who has kindly responded to my recent queries re: heat pump install at my existing 3-story house on border of zone 5/6 (VT-MA). Im…Read MoreGreenBuildingAdvisor