I have a gas furnace driving a hot water radiator system. I replaced my old
thermostat with a new computer controlled unit which died, so I put the old
Armstrong unit back. It was very reliable, which I like. However, last
winter it was incomfortable because the variation between cycles was too
great. The anticipator was in a middle setting. i just moved it to near the
shortest cycle setting.
The thermostat seems to have a 2 degree window. At 62 it cools to about
59-60 and then kicks. To get closer to 62 I moved it up to average at 63. So
far, the cycling seems more comfortable. However, I'm worried about how it
will do as the temperature gets colder. Will the shorter cycling stress the
equipment unreasonably? If not, I'd prefer it for the comfort. Why would
anyone use longer cycles? Isn't it a false economy (lowering the average to
I wish I could just pay a competent pro to adjust the furnace, but after
calling 4, none showed up as promised last year (and that was just an
ordinary winter call, not in an especially busy season)(and I had cash)!
I had a similar problem when I first moved into my house, although it
was an electronic thermostat the previous owner had installed and I
have a forced-air heating & cooling system. Although the window was
programmable down to 1 degree, I remember company I had one night in
December feeling alternately cold and warm because the thermostat was
just waiting too long to turn on the heat and then letting it stay on
too long. Then in the summer the house would feel like it was getting
too warm - especially upstairs.
I switched to a different electronic thermostat (a Honeywell unit; can
send the model # if you want). It seems to maintain the temperature
within 1/2 degree for both heating & cooling, and the house is a lot
more comfortable year-round. Although it runs the system more often,
it doesn't seem to have had an adverse effect on it after 2 years. My
system is 9 years old, and it seems to tolerate the shorter run times.
I think the window is +/- 0.5 or 0.75 degrees because once I set it at
a certain temperature (e.g. 67 degrees), it stabilizes there (i.e.
never moves up to 68 or down to 66).
I know this model thermostat does have a setting for hot water systems
which increases the run time to compensate (the manual says you can
use it on a forced-air system to increase run time), but I think it'll
still try to maintain the temperature within a tighter window than 2
I'm not sure if this is better or worse for fuel economy; a pro would
probably have to answer that one.
This is Turtle.
You are setting a antisipator by temperature and not by telling us what the
numbers are on the settings your setting it on. The scale will be 1.4 down
to .1 . Look and see what number your setting it on and we might be able to
answer you. You need to be in the range of .3 to .6 . Antisipators are
ranged on this scale only and not by temperature.
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