The Nest thermostat is one of the top-selling smart thermostats you can buy. And for good reason. It learns your temperature preferences and makes an energy-efficient schedule to match. And by geofencing with your phone, the Nest Learning Thermostat and Nest E are aware of when you’re at your home or gone and can adjust settings to help you save even more.

The Nest can be used with a wide range of 24-volt heating and cooling systems, but it’s always a wise idea to visit the Nest thermostat compatibility checker before installing 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 on your own or hire a HVAC pro like AZ Air Conditioning and Heating. If you’re wiring it yourself, you’ll spot a terminal for the C-wire, or common wire. This wire is only used for powering your thermostat. If your residence or HVAC system is older, you might not have one of these wires. In the majority of cases, Nest says this isn’t a setback because the thermostat can pull ample power from other heating and cooling wires.

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

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is better than aging programmable thermostats that use a combination of wiring and AA batteries for power. It has a rechargeable lithium-ion battery and wiring to sync with Wi-Fi, power its digital display and run your heating and cooling system.

8 Common Nest Thermostat Problems

If it can’t get ample power, Nest says you could have some of these problems:

  1. Short battery life.
  2. Thermostat motion sensing won’t work.
  3. Your thermostat every now and then disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t shut off.
  5. Your system is producing odd noises, including chattering, stuttering, clicking or thumping.
  6. Heating or cooling is short cycling, or frequently turning on and off in a short period of time.
  7. There is a delay message on your Nest thermostat’s screen, like “heating is delayed for 2:30 minutes.”
  8. The system fan is always on, won’t run or turns off and on frequently in a short period of time.

You may believe something is up with your heating and cooling system, but if you just started using the Nest, we advise you check your thermostat initially. This is especially pertinent if the weather is temperate, and you haven’t been running your heat or air conditioning consistently.

Our Pros Can Solve Nest Thermostat Problems

If you’ve tried Nest thermostat troubleshooting without help but can’t solve the issue, a smart thermostat specialist like one from AZ Air Conditioning and Heating can assist you. We can identify the malfunction and put in a C-wire, if needed.

Smart thermostats including the Nest are made to make your life more convenient, through automatic energy-efficient programming and the opportunity to monitor settings while you’re on the go. It’s a frustrating experience when yours won’t work like it should, but our heating and cooling experts at AZ Air Conditioning and Heating can resolve the problem fast.

If you’re running into atypical heating and cooling behavior with your new Nest, call us at to schedule your appointment right away.