How Can I Tell if My Home's Thermostat Is Broken?

How Can I Tell if My Home's Thermostat Is Broken?

A thermostat can malfunction because of dead batteries, power outages, or dirt buildup. If it’s more serious, though, it could be time for a new thermostat..
Any time your air conditioner or furnace doesn’t deliver the desired temperature, it could mean your home has a broken thermostat. A broken thermostat is more than an annoyance - it could quickly cause your house to get uncomfortably hot or cold, and it often leads to substantial energy waste as well. 

Hello, new home owner here. Downstairs thermostat was broken so I am replacing it. New model I ordered is a bit different as described in pictures. Would love some clarification and I

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