Slide 1: Thermostat

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“This sounds obvious, but it’s true: A lot of people don’t have their thermostat set right,” says Bobby DiFulgentiz, director of product management for Lennox International. Double-check that the thermostat is set correctly. The switch can easily get moved—say, during dusting. DiFulgentiz also advises to make sure the set point is at a temperature that will actually turn on the furnace.


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