1. Can hydraulic radian heat under wood floors be the
primary or the
only source of heating? My architect said No, it can only be
used or
comfort, and need to be supplemented by other heat source.

SM: Should be possible. Hydrionic lacks the ability to AC or
to filter dust out of the air. If you use pure water, the
pipes could freeze during a power cut.

2. Is there way to combine boiler used for radiant heating
and for hot
water? My boiler is small and old and needs replacement
anyway. If i
decide installing radiant heat in part of my house it would
be the
best to use the same boiler.

SM: Yes, I've worked on systems with an indirect heater,
which heats water for showers, dishes, etc. Should be
possible to combine them. Of course, that's the time to
consider which fuel to use. Some parts of the world, fuel
oil, natural gas, or propane. Based on what's available, and
what's most reasonably priced.

3. Can wood floors survive heat underneath? I know wood is
extremely
sensitive to temprerature.

SM: Should be fine. During the winter, you'll be wishing
for a humidifier of some kind, or your house will massively
dry out.

4. How expensive hydraulic radian heat vs. standard forced
air gas
furnace? I have electric radiant heat in my two bathrooms
and kitchen
under tiled floor and it is very expensive to run.

SM: Installation, I don't know. Operation cost varies, with
the cost of fuel. Most areas, cheaper than electric, very
much so.

5. Can the same boiler be used to heat baseboard radiators?
My
architect said it is the cheapest way to heat th house.

SM: Baseboard radiators are different temp than Wirsbo, but
it should be possible.

6. Can hydraulic radian heat installation be DIY? Assuming
there is
professional layout and calculations done, it seems to me at
least
part of installation can be DIY.

SM: I've known families who did much of the install
themselves. The one family I know, when they had the cement
floor poured, the tubes to the heating manifold got shifted,
and the manifold was too close to the floor, and crooked. He
wasn't at all pleased.