Heat pumps are not delivering expected cost savings

Two years ago we took advantage of our state’s efficiency rebate program to install two heat pumps in our 2,200-square foot 1978 split level in southern Maine (6A) – one… Two years ago we took advantage of our state’s efficiency rebate program to install two heat pumps in our 2,200-square foot 1978 split level in southern Maine (6A) – one…Read MoreGreenBuildingAdvisor