I currently have a Honeywell Chronotherm III here at the house,
and I'm really tired of its not quite doing what I want.
So, I'm looking for 2 replacements (one upstairs, one down).
First, a bit of info:
Here in AZ where I live, we have a time-based energy cost thing
that has 2 schedules: noon-9pm in the summer (or 1-8, or whatever
they decide each year), and 5am-9am/5pm-5pm during the winter, for
the expensive times. So, I want either for the 'periods' for
heat set points and cool set points to be independent, or I need
enough set times to handle the situation we had a few years ago
where my set (change) times were 5am, 9am, noon, 5pm, 8pm, 9pm!
However, there are times during the 'summer' schedule when i actually
want to run the heater, and vice versa. And I really don't want
to re-program the stupid 'morning/afternoon/evening/night schedule
of some thermostats I've seen at each schedule change.
And I absolutely insist that either the thing has an absolutely
non-volatile (no battery needed) memory of my schedule, OR
be remotely-controllable and/or remotely-settable (probably
just remotely-settable) **
with a protocol that is documented**
and that I can write my own software for (since I use linux
and not windows). (Of course, both would be really nice)
Oh, and it would be really really nice if it cost me no more
than around $100 per (which I have every intention of installing
So, how far away from reality am I? Do I need to go design
this thing myself since the closest I found was either the HAI
(which does not seem to have a publically-available protocol)
for $127 (lowest price I found); the enerzone (about which
I have basically only been able to find pricing) for around
$170 or so; and the RCS for around $200 (which seems to do
exactly what I want). Each. And, like I said, I need 2.
Now, it appears that the RCS will do what I want/think_I_need,
but I could be all washed up there (and its too pricy anyway -
if it comes to a $200/per situation I'll buy 2 cheapo units
with NV program storage and design my own system that
does precisely what I want)
Or should I punt on the remote computer control idea
and just find a good multi-time thermostat with true
non-battery-reliant nonvolatile memory? And where
in the world ARE such beasts?
reply to r u s t y c < a t > d e s c o m p < d o t > c o m for
best chances of my seeing it! (But I will also monitor
(the email from which this posting came *will*
work, but I rarely