"HeatMan" wrote in message
.. .

"Phil Scott" wrote in message
...

"HeatMan" wrote in message
. ..

"Phil Scott" wrote in message
...

Replacing the existing will be cheaper first cost by a
wide
margin. a high effiency furnace, 90% or better will be
cheapest to run/

If you want AC in the bargain go for a split system heat
pump
instead of a gas furnace.

forget the radiant heat on a retrofit.


Why?

I do it quite often....


Post the details then.

What kind of details do you want?


Im sure its workable. Im just not so sure its cheaper on
balance to own and operate than forced air in his case...
expecially *if he wants air conditioning in the mix/

Radiant is cheaper to operate, but not anywhere near as
cheap to install.
You can have radiant cooling, but the surface temps have to
be above the dew
point.


I saw an odd installation in Clearwater Florida, a group of
offices, above the suspended ceiling was a direct expansion
net work of copper tubes (freon inside) running at about 35
degrees, and convecting cold air through grid panels in the
ceiling into the room, drip pans under the runs of pipe to
collect the condensate.. but have cost 3x what standard system
would.



I think the OP is in Canada. They won't have quite the
cooling needs as
someone in Miami...

Correct. In SF calif. virtually all commercial buildings need
HVAC, but most homes doint even some high end homes...so...
they suffer a few days a year is all.

same in ontario Im sure.


Phil Scott