Ductless HVAC and humidity control?
We live in Pensacola, Florida and area with extremely high humidity. We are building a new house which is about 2800 sq ft. House consists of a main floor at about 1800 sq ft, second floor at about 800 sq ft and a loft at about 200 sq ft. The current plan is to go with an all ductless Mitsubishi HVAC system, well actually 2 systems. 1 controlling the first floor and a 2nd for the 2nd floor and loft. We have a very competent local installer and I have zero doubts about their capabilities and the pricing I feel is fair.
The real concern that I have not addressed with them yet since they are off for a few days is humidity control. We have incredibly high humidity here. I did some reading on whole house dehumidifiers and they seem to be geared towards ducted HVAC systems. That begs the question what is available for dehumidifiers (whole house) for ductless HVAC? Are these systems something that we must install during construction OR can we do the install say a year later? I want to keep the RH at around 50% inside the house year round. The ductless apparently have a mode where they’ll dehumidify to a point but I am just a bit leary of these claims. Perhaps they do but I am here to learn what I can and try to make an informed choice. I have reached out to several references from the HVAC company who have either all ductless homes or have ductless systems on a second floor of the house and they’re very very happy with the company and systems 3 plus years later.
Thanks in advance for any and all thoughts to our questions.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part