Not sure if someone already mentioned this or not... But, nobody that actually has radiant heat calls it "hydronic", at least not around here. It's just radiant heat. I don't have to start saying "hydronic" now do I?
It sounds like "moronic". If radiant heating is too much of a mouthful, surely we can come up with something better than hydronic? Actually neve rmind, it's not important.
Just blabbing to get my post count past "lurker", that's sounds creepy.