







|
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| After a
furnace has been installed, heating equipment technicians
often perform routine maintenance and repair work to keep
the system operating efficiently. During the fall and
winter, for example, when the system is used most, they
service and adjust burners and blowers. If the system is not
operating properly, they check the thermostat, burner
nozzles, controls, or other parts to diagnose and then
correct the problem |
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