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How to tell if thermostat is bad

402 Views 8 Replies 4 Participants Last post by  SeniorSitizen
How do you know if a thermostat is bad. Our house seems cold yet the thermostat says the this 72. We put a thermometer near it and it shows 68. Furnace is working. Any ideas would be appreciated
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I would think a draft of cold air from anywhere to the stat would normally make the stat read lower than actual room temperature rather than higher. Also the accuracy of thermometers in the price range we deal with aren't always that great. If there was a 2° + : - accuracy in manufacturer that differential is easily obtained.
It's pretty much a guessing game without details.
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