Air conditioning for a radiant heated home?
We’re planning a new two-story house build in Ottawa, Ontario, probably equivalent to zone 6/7 on the US chart. We are planning to use hydronic heated floors on all three levels.
What are the most common approaches for adding air conditioning to a house with radiant floors? We will have a fairly comprehensively ducted HRV/ERV system.
The house will be superinsulated (~R40 walls, R60 attic, R20-30 below grade) with southern exposure and proper window shading to limit solar radiation. Finished plans should be around 2500 sqft.
A large portion of the second floor will be open to the first floor (above the living and dining room areas and main staircase), leading me to think ductless minisplits would be a bad idea.
Is there a practical way to utilize the HRV ducting to supply air conditioned air? I’m planning to have the supply ductwork set up to supply fresh air throughout all the major areas of the house as well as a supply for each bedroom.
Any help is appreciated! It would be nice to avoid doubling up on the amount of ductwork running through the house.