I am mortified for myself and for the "professional" that installed your system and I feel like dirt...

It is good to research your options before jumping from frying pan to fire.Geo for your system is snake oil as my two asteemed colleagues have stated.

I think it is the first time a BadgerBoiler has been confused for a ModCon, but I think I like it?

My point is really, that a professional design should be done regardless of who installs the system, no matter where it located. A savvy designer is likely to know more about radiant applications than your local plumber, HVAC guy etc. Naturally they are needed for installation, service and warranty issues but design is a whole other animal.

Perhaps before you decide a new design should be done including especially heat load, near piping and control strategy?

I really do appreciate all the guidance. Where do I send the check? I guess at this point we will go down the road of looking at a Solar-enhanced system like was mentioned above. The Geo sales guy said "a water-to-water Geo can crank out 125 degree water all day long!". As you say, "Who do you trust?" Maybe a used
car sales guy over a Geo guy, because the car sales guy "knows that he is lying to you", right? ;-)

geo systems lose roughly a full cop per 10 degrees. at 125 your COP is typically pretty low, and lifespan of the compressor is greatly compromised.

I love Geo... love it... but I would never design a system for a geo heat pump at over 115 and I will do practically anything to keep it under 110.

Radiant floors don't move air but naturally you will have an ERV to control air quality and the usual exhaust fans as necessary.