Do low-speed fans on new warm air oil furnaces run all the time?
"mm" wrote in message
...
Do low-speed fans on new warm air oil furnaces run all the time?
Furnace fans are commonly controlled by thermostat switches
with three settings:
Off = fan never runs
On = fan runs always
Automatic = fan runs when required by the heating unit.
--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)
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