I will never install a centeral FAU again .if this is as good as it looks
http://www.bio-radiant.com/HydroAir.html says I can use a water heater to Zone Heat a house.
The system moves hot water to each room, a fan coil fits into the wall between the studs and circulates air into the room.
This system seems to have big advantages over a central FAU
1. no duct work
2. its ideal for zoning
3. Can take less space when the house heater is combined with the water heater.
If this works well, I will never recomend a centeral FAU design again.
Are there downsides I should know about it before I recommend this system?