Thermostat / furnace issue


Old 11-16-18, 10:37 AM
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Exclamation Thermostat / furnace issue

Hello Community,

I have recently come across an issue with my thermostat and when and how my heat comes on.

My thermostat seems to be an old round Honeywell. I set me temp to stay at 65 typically. as of last night my furnace has been coming on what seems like too early as its already above the temp at 67-68 degrees and turning off at around 72-74. what would be causing something like this to happen?

Appreciate any help as its cold up her in New England.

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Old 11-16-18, 04:39 PM
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Welcome to the forums.

Is that one of the old round Honeywell thermostat with the mercury bulb in it ?
If yes...... time to send it packing.

I can tell you one thing...... those thermostats need to be run perfectly level to operate at the right temperature.
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