New house HVAC -- reviewing choices before too late
In our 2800 sq ft one-story new house in southern Maryland,
we're planning to have geothermal heat (horizontal
loop) using in-floor radiant technology.
One third of the house will have a slab foundation,
so it will use embedded piping. The
remainder will be over crawlspace, so there we're going
with engineered wood (tile in the bathrooms) above
Warmboard, which was our architect's recommendation.
For AC, I thought mini-split looked like a good
solution, but the architect favors central, in
essence telling me that the HVAC contractor will
know how to do it right. So I'm deferring more
pointed questions to ask prospective builders when they
submit bids. I presume that details can be
considered more fully at that time.
We're going to live in this house forever, so
long-term efficiency is more important than
initial cost. However, our architect, I noticed,
tends to be biased toward deluxe materials.
So, anything above not to like? Another thing that's
making me nervous is whether the contractors in our
area have sufficient experience in installing some
of this technology.