Standalone dehumidification required in zone 4a?

I’ve lived in an 1100 sqft NYC apartment for a number of years but recently bought an old townhouse (3 story, ~2500 sqft) that I’m bringing up to modern spec.… I’ve lived in an 1100 sqft NYC apartment for a number of years but recently bought an old townhouse (3 story, ~2500 sqft) that I’m bringing up to modern spec.…Read MoreGreenBuildingAdvisor