The Nest thermostat is one of the top-selling smart thermostats on the market today. And for good reason. It picks up on your temperature preferences and makes an energy-efficient schedule to match. And by geofencing with your phone, the Nest Learning Thermostat and Nest E realize when you’re at your home or out and about and can change settings to help you save even more.

The Nest works with a full range of 24-volt heating and cooling systems, but it’s always a wise idea to check the Nest thermostat compatibility checker before getting one. Don’t forget to contact your energy company for valuable rebates, as you may be able to get a Nest for free or close to it.

Once you’ve confirmed it’s compatible, you can either hook it up on your own or contact a HVAC professional like Custom Air Systems Inc. If you’re wiring it without help, you’ll notice a terminal for the C-wire, or common wire. This wire is just used for powering your thermostat. If your residence 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 Problems

The Google Nest Thermostat is a step up from older programmable thermostats that rely on 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 turn on your heating and cooling system.

8 Common Nest Thermostat Malfunctions

If it can’t draw enough power, Nest says you could run into some of these troubles:

  1. Poor battery life.
  2. Thermostat motion sensing won’t operate.
  3. Your thermostat sometimes disconnects from Wi-Fi.
  4. Your system unexpectedly turns on or off, or won’t shut off.
  5. Your system is creating odd noises, such as chattering, stuttering, clicking or thumping.
  6. Heating or cooling is short cycling, or repeatedly turning on and off in a short period of time.
  7. There is a delay notification on your Nest thermostat’s screen, along the lines of “heating is delayed for 2:30 minutes.”
  8. The system fan is always on, won’t turn on or turns off and on rapidly in a short period of time.

You could think something is suspect with your heating and cooling system, but if you just got the Nest, we advise you check your thermostat right away. This is especially true if the weather is moderate, and you haven’t been relying on your heat or air conditioning consistently.

Our Pros Can Solve Nest Thermostat Issues

If you’ve tried Nest thermostat troubleshooting by yourself but can’t fix the dilemma, a smart thermostat professional such as one from Custom Air Systems Inc can support you. We can pinpoint the issue and put in a C-wire, if required.

Smart thermostats such as the Nest are designed to make your life simpler, with 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 operate properly, but our heating and cooling pros at Custom Air Systems Inc can take care of the issue quickly.

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