24/7 Emergency Service Available

Our Blog

How to Install a New Thermostat

A new thermostat could reduce your energy bills. Replacing your old manual thermostat with a digital programmable one will relieve you of having to remember to change your temperature settings every time you leave home. For most HVAC systems, learning how to install a new thermostat is relatively simple. You can do yourself if you have a basic knowledge of electricity and how to use simple hand tools.

Following is a brief summary of how to install a new thermostat. If you are uncomfortable with doing this job, or if you get stuck at any step along the way, call an expert to do it for you.

  • Buy a thermostat that is compatible with your HVAC systems.
  • Review the directions that are included with the new thermostat.
  • Turn off the power to your HVAC system. Put a sticky note or tape on the circuit breaker switch to keep anyone from turning the circuit back on while you are working on it.
  • Remove the old thermostat from its wall plate.
  • Draw a diagram with color-coding to show how the existing thermostat is wired.
  • Disconnect the wires and wrap them around a length of wooden dowel to keep them from falling back inside the wall.
  • Remove the old wall plate. Place the new wall plate in position and mark screw holes. Drill holes into the wall and insert drywall anchors as needed.
  • Pull wires through the hole in the new wall plate, then screw the wall plate into the wall.
  • Cover the exposed hole with tape or insulation to keep cold air in the wall from interfering with the new thermostat’s operation.
  • Attach wires to the terminals on the new thermostat according to the directions or to match your original wiring diagram.
  • Slide or snap the new thermostat onto its wall plate.
  • Turn power back on and test the new thermostat for correct operation in both cooling and heating modes.

If you want one our HVAC technicians to explain how to install a new thermostat or to do the installation for you, contact us at HVAC Unlimited. We help homeowners throughout northern Virginia keep their homes comfortable and energy efficient in every season.

CONTACT US
Get the value-focused & trustworthy service you deserve today!
24/7 SERVICE
EMERGENCY SERVICE

We have staff on call at any time of the day or night, every day of the year so that we can provide assistance during emergency situations.

CONTACT US