On Feb 22, 11:07*pm, Glenda Copeland gscopel...@Use-Author-Supplied-
Address.invalid wrote:
How do I adjust a thermostat so that the heat reaches the set temperature?

My Honeywell round thermostat has a bulb with mercury in it and a coil of
metal that seems to control when it makes electrical contact.

When I set the Honeywell bulb thermostat to 68°F, the heat only gets to
about 58°F. Likewise, when I set the thermostat to 85°F, the heat shuts off
when it reaches about 75°F.

This works fine except my husband keeps yelling at me for setting the
thermostat to 85°.

I know the simple answer is to change him but why do thermostats have
numbers on them if they're not even close to those numbers?

Is there a way to adjust the temperature? When I pull the round cover off,
I see a copper pointer on the bottom with etch marks on the plate below but
that pointer is already all the way to the left and moving it to the right
just seems to make the offset error worse.

What's the procedure to adjust a Honewell round thermostat to reach the set
point before turning off?

I don't know if such things are available in America but in Europe you
can get an "intelligent thermostat." There is an additional outside
sensor and the heating is switched on earlier in cold weather and
later in warmer weather. The exact amounts depend on the insulation
of your house (nonexistant I expect in America). The thermostat
determines this for itself after the first run. Dependant on your
lifestyle, between 10 and 20% can be knocked off your heating bill.
Some of these devices also compensate for wind .
A digital thermostat can save 10%. It's important that the thermostat
is correctly sited. In Europe every room is independently controlled
in new buildings.