The Nest thermostat is one of the best-selling smart thermostats on the market today. And for good reason. It picks up on your temperature preferences and creates an energy-efficient schedule to match. And using geofencing with your phone, the Nest Learning Thermostat and Nest E know when you’re at your residence or out and about and can adjust temperatures to help you save even more.

The Nest can be used with a vast range of 24-volt heating and cooling systems, but it’s always a smart idea to check the Nest thermostat compatibility checker before getting one. Don’t forget to talk with your energy provider for valuable rebates, since you may be able to get a Nest for free or close to it.

Once you’ve checked it’s compatible, you can either wire it yourself or contact a HVAC pro like Stanford Heating & Cooling. If you’re installing it on your own, you’ll notice a terminal for the C-wire, or common wire. This wire is only used for powering your thermostat. If your house or HVAC system is older, you might not have one of these wires. In most cases, Nest says this isn’t a problem as the thermostat can get enough power from other heating and cooling wires.

In some instances, your heating and cooling system might need that C-wire. And here’s why.

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is a step up from outdated programmable thermostats that have a combination of wiring and AA batteries for power. It uses a rechargeable lithium-ion battery and wiring to connect to Wi-Fi, power its digital display and turn on your heating and cooling system.

8 Common Nest Thermostat Problems

If it can’t get adequate power, Nest says you may run into some of these problems:

  1. Bad battery life.
  2. Thermostat motion sensing is disabled.
  3. Your thermostat every now and then disconnects from Wi-Fi.
  4. Your system suddenly turns on or off, or won’t stop running.
  5. Your system is producing weird noises, including chattering, stuttering, clicking or thumping.
  6. Heating or cooling is short cycling, or constantly turning on and off in a short period of time.
  7. There is a delay notice on your Nest thermostat’s screen, such as “heating is delayed for 2:30 minutes.”
  8. The system fan is constantly running, won’t run or turns off and on frequently in a short period of time.

You might believe something is wrong with your heating and cooling system, but if you just started using the Nest, we advise you check your thermostat first. This is especially true if the weather is mild, and you haven’t been relying on your heat or air conditioning much.

Our Pros Can Solve Nest Thermostat Troubles

If you’ve gone through Nest thermostat troubleshooting by yourself but can’t repair the dilemma, a smart thermostat pro including one from Stanford Heating & Cooling can support you. We can determine the issue and add a C-wire, if required.

Smart thermostats like the Nest are made to make your life simpler, with automatic energy-efficient programming and the opportunity to monitor temps while you’re out. It’s a time-consuming experience when yours won’t work properly, but our heating and cooling experts at Stanford Heating & Cooling can take care of the issue in no time.

If you’re running into odd heating and cooling behavior with your new Nest, reach out to us at to set up your appointment right away.