Anyone who says they wouldn’t change a thing on the hydronic systems they’ve designed or installed over the last decade is either so oblivious to changes in technology they don’t know any better, so egotistical they can’t accept that improvement of their work is possible or so foolish they don’t care what they’re missing out on.
Over the years I’ve had the good fortune of meeting hundreds of individuals I regard as true hydronic-heating pros. Many have willingly shared stories of their experiences and experiments. I can’t think of a single one who wouldn’t admit they’ve made significant changes in their design or installation practices over the last few years.