But mackay writes that he is building in climate zone 6a where humidity ranges between 20 and 35.
Floor radiant cooling system.
Aprilaire makes a complete line of whole home dehumidifiers for under 1000 usd.
Since radiant heating systems tend to be in the floor the obvious choice would be to use the same circulation system for cooled water.
Radiant cooling from a slab can be delivered to a space from the floor or ceiling.
A radiant floor cooling system will not solve humidity issues but installing a large or whole house dehumidifier can do this job very easily at about the cost of an ac.
While this makes sense in some cases delivering cooling from the ceiling has several advantages.
Under optimal design conditions capacities of a floor system up to 16 btu h ft can be achieved with more typical capacities in the 8 to 12 btu h ft range.
Radiant cooling slabs use similar design and sizing principles as a hydronic radiant floor system using the same types of pex pipes manifolds and pumps as in heating.
Radiant cooling systems have been embedded in the ceilings of adobe homes taking advantage of the thermal mass to provide a steady cooling effect.
Homes built on concrete slabs are prime candidates for radiant heating systems and radiant floor cooling takes advantage of the same principle using chilled water.
Similarly water can accumulate on flooring cooled by a radiant floor cooling system.