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How to tell if thermostat is bad

405 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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Could have a draft coming out of the wall penetration affecting the reading.
What thermostat is this?
Could be inaccurate then.
Make certain it’s not a draft from within the wall. It’s actually a very common issue. You can’t tell unless you take the thermostat off the wall.
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