The Nest thermostat is one of the most popular smart thermostats you can get. And for good reason. It learns your temperature preferences and makes an energy-efficient schedule to match. And through geofencing with your phone, the Nest Learning Thermostat and Nest E realize when you’re at your house or away and can change temperatures to help you save even more.

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

Once you’ve confirmed it’s compatible, you can either wire it without help or hire a HVAC specialist like Premium Air Services LLC. If you’re wiring it on your own, you’ll see a terminal for the C-wire, or common wire. This wire is just used for powering your thermostat. If your home or HVAC system is older, you might not have one of these wires. Most of the time, Nest says this isn’t a problem as the thermostat can pull enough power from other heating and cooling wires.

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

Why Your Nest Keeps Losing Power and Other Issues

The Google Nest Thermostat is an improvement from outdated programmable thermostats that use a combination of wiring and AA batteries for power.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

8 Common Nest Thermostat Malfunctions

If it can’t draw adequate electricity, Nest says you may run into some of these issues:

  1. Poor battery life.
  2. Thermostat motion sensing won’t operate.
  3. Your thermostat sometimes disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t stop running.
  5. Your system is creating odd noises, such as 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, like “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 worry something is up with your heating and cooling system, but if you just installed the Nest, we advise you start with your thermostat first. This is especially timely if the weather is mild, and you haven’t been relying on your heat or air conditioning frequently.

Our Specialists Can Solve Nest Thermostat Troubles

If you’ve tried Nest thermostat troubleshooting on your own but can’t fix the problem, a smart thermostat professional like one from Premium Air Services LLC can support you. We can diagnose the problem and put in a C-wire, if necessary.

Smart thermostats like the Nest are made to make your life more convenient, through automatic energy-efficient programming and the opportunity to check settings while you’re away from home. It’s an annoying experience when yours won’t run correctly, but our heating and cooling pros at Premium Air Services LLC can resolve the issue quickly.

If you’re running into odd heating and cooling behavior with your new Nest, reach out to us at to request your appointment today.