On Wed, 04 Feb 2004 14:48:12 -0600, wrote:

And another thing.

Don't even think about a setback thermostat
.
Leave it on and leave it at set temperature. Even if you leave for
the weekend. Expect it to take 72 hours to stabilize after your 10
day ski trip when you do set it back 10 degrees.

Given the slow response time of radiant heat.... as per
your statement above..... is this one reason why YOu
might avoid using that "type" of heat?

Are ALL radiant heat systems just slow to respond....
and the nature of the beast?

I think you are onto something important. It is nearly always about
"comfort" when you are talking about these radiant systems.

I prefer efficiency as much as comfort and could never justify the
cost of such a system for myself or my fat wife although operating and
installation costs are coming down for radiant systems.

Slow? Depends. If it is an upstairs bathroom, then it should come
up to temperature in a couple of hours. If it is in a full basement
then a couple of weeks might be necessary to get the full effect of
radiant heat.

PJ