Quote:
Originally Posted by stevehull
And this means forces cool air through a duct system. I know, I know, a small pipe can carry 1000 times more "cooth" than a similar sized air duct. But the problem is that we also have humidity.
Combine a very nice cool floor (or wall, or ceiling) with a air dewpoint only a few degrees higher and you have condensation. Not good.
Radiant flooring is still to die for in the winter . . . . can we have both without breaking the bank?
Steve
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Some of the most efficient inverter ductless mini-split systems would be ideal for Oklahoma. Limit solar exposure in the building design to reduce heating from the sun in the summer, build to R30 walls(ideally), R60 attic, insulated floor, etc. or at the very least R21 with 2 foot on center 2x6 advanced frame construction. Install good windows with thermal performance in mind. With R30, limited solar exposure, and a decent open space building design, put a 9k mini-split in each bedroom(or with a multi-split you have 5k indoor head options) and one in the kitchen/living room space and you could have high 20 SEER, some units touching a hair over 30 SEER. In the winter, these will be barely running with R30 walls and design temperatures in the teens and more than enough cooling in the summer.