I was wondering about that
My cousin has been pushing me to try zone controlled heating & cooling in my 2 story farmhouse. I constantly complain about the high energy bills just trying to keep the whole place cool in the warm season with my ailing central Heating, Ventilation & A/C system. He explained how a series of ductless mini split cooling system & gas furnace combo units can be sited in separate rooms in your beach house & all connect to a single condenser unit outside. They can all be run simultaneously & at weird temperature settings. If you have a beach house with several tenants with weird temperature needs, this setup allows almost everyone to have their own set temperature in their own private spaces. But if you live alone care about myself, the real advantage is only heating & cooling the unique rooms I’m using at any given time, which cancels out most of my minute floor. All of those extra bedrooms up there just full of storage boxes do not need proper a/c, or so I assumed. I live in a humid environment & rely on my central cooling system to keep the moisture levels in check as much as I need it to keep it cool indoors. When you’re running a central system, it’s recirculating all of the air in your beach house & pumping it into every room, nook, & cranny. I figured that doing zone control wouldn’t be an issue, but I didn’t consider humidity. I don’t want my upstairs storage rooms to hastily get undoubtedly humid in the warm season weeks & potentially spur mold propagation in my boxes & spare clothes. I’m still mulling over my choices; I could get a central dehumidifying system, however that would still require running the Heating, Ventilation & A/C system, even if the a/c component was switched off. I may buy portable dehumidifiers to keep in certain areas of my beach house & setup fans along paths to circulate the dried air into each room. I’m hoping this solves all of my heating & cooling complications at once.