RE taconichills:
“Have you considered a direct exchange (DX) system? I chose this system over a water-based system. One less heat transfer, wells only need to be a 100 feet deep, and just seemed all around better to me.”
I was going to mention this in my next post (this post). Great suggestion; lookup ‘Earthlinked’. One third less drilling, smaller footprint required. Properly installed could be a very good option.
Google ‘Slinky’ ground loop as well.
A completely variable speed GSHP should be able to take care of dehumidification just by its very nature of being able to throttle down to a very low speed and airflow over the evaporator coil. Adding an ERV would be a bonus.
Waterfurnace Series 7 would be my first choice and Series 5 my second. Synergy3D if you’re considering in-floor radiant. You have lots of options but first have to figure out the ground loop configuration and whether to go liquid-to-air or DX-to-air.
I also suggest contacting Waterfurnace to see who services your area.
WaterFurnace
How far apart are these 2-buildings? It might be possible to go liquid-to-water and have just 1-system with zoning for both buildings, in-floor radiant, forced air heating & air-conditioning & domestic hot water. Other options for cooling are also possible but for later discussion if you get there.
IMPO
SR
Q