dpb wrote:

CJT wrote:

Wayne Whitney wrote:

...

...You will reach equilibrium with everything at 70 degrees sooner.

...

Well said.


Even if so (and I think it would take a pretty exceptional house design
for it to make any discernible difference in any practical sense), it
will certainly be more expensive

I don't see why, unless you've got a heat pump with resistive backup.

First order, you need to put the same BTUs in either way to start the
same mass at the same temp and end it at the same temp (although I will
admit to the fact that the path can have a small effect due to the
variation in delta-T's to the outside which affects losses along the
way, but work with me here and assume that the heat needed to go from
cold to warm is most of the energy used and that losses during the
short time involved are second-order).

and the time to reach the initial
setpoint is still the same so at best it's a period after that initial
warmup at most that can be affected at all.

--




--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form .