Gimpy wrote:
Just had a new boiler furnace ( baseboard heat ) installed. Also got rid of
my very old thermostat & installed a new digital setback type. My question
is, what's the deal on setting back a boiler a few degrees at night.
Considering the time it runs in the morning to get the temp. back to normal,
am I really saving anything or not ?? Any ideas, thanks Gimpy

Okay, you have a boiler, not a furnace (which heats air.) The boiler
has a
thermostat (separate from the one for the house), that controls the
temperature
of the water-jacket; good idea to turn that down, within reason, for
efficiency,
so long as you have adequate recovery rate in the house.

IOW, you might want the "aquastat" to be set to 180 deg F in Feb., but
160 is
fine for March, and 140 okay through summer. Unless you have
separately-fired
water-heater, and turn boiler off for summer.

Yes, you will save, proportional to night setback, and reduction of
water temp,
within restriction of what it takes to bring temps back up on frosty
morn.

J