Radiant Floor vs. Aquaheat vs. Roof Heat

[MarkofSJC]

I'm really curious about three aparently overlapping ways to heat some 2004 & newer coaches. In looking at a 2008, it has 1) radiant floor heating, 2) Aquaheat, and heat pump capacity through the 4 rooftop A/C units (I think).

So do you need to use one system in certain conditions (i.e. radiant only if you've got shore power?), or do you use several systems at the same time (radiant + Aquaheat). Or, if you're in the snow, do you need to use all three?

I'm curious how to best keep the coach comfortable in the most efficient manner.

I know the Aquaheat systems have been used for years as primary. Curious if radiant can also be used as primary (and why)?

Love to hear your comments!

Mark