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Troubleshooting Your Thermostat

Project Overview

Troubleshooting Your Thermostat

Pick one: it's freezing/sweltering out, and you're a) turning into an ice sculpture; b) sweating like a fiend. Before you throw in the towel and make a service call, make sure the problem isn't something you can fix yourself – like a simple glitch with your thermostat. Here's what you need to check.

3 Steps

  1. Turn off power
  2. Remove Thermostat Body
  3. Inspect Wire Connections
Turn off power

Step 1

Turn off power

Turn off power to the heating/air-conditioning system at the main service panel. Remove the thermostat cover plate.

Remove Thermostat Body

Step 2

Remove Thermostat Body

Remove the thermostat body by loosening the mounting screws with a screwdriver.

Inspect Wire Connections

Step 3

Inspect Wire Connections

Inspect the wire connections on the thermostat base. Reattach any loose wires. If the wires are broken or corroded, they should be clipped, stripped, and reattached to the screw terminals. Replace the thermostat body and cover plate. Restore power at the main service panel.

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Project Details

Skill Level: Beginner

Time: 1 hour

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.

Tools

  • Screwdrivers, Nut Drivers & Keys
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