portable ac heat

I live in a two-story home with a oil furnace in the old half and a pair of mitsubishi hyperheat minisplits in a newer addition. The two sides can operate… I live in a two-story home with a oil furnace in the old half and a pair of mitsubishi hyperheat minisplits in a newer addition. The two sides can operate…Read MoreGreenBuildingAdvisor