Why Your Nest Thermostat Isn't Working and How to Fix It

April 13, 2021

The Nest thermostat is one of the top-selling smart thermostats you can get. 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 know when you’re at your house or away and can adjust settings to help you save even more.

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

Once you’ve made sure it’s compatible, you can either hook it up on your own or call a HVAC professional like Thurston Heating & Air Conditioning. If you’re putting it in 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 the majority of cases, Nest says this isn’t a problem since the thermostat can draw adequate power from other heating and cooling wires.

Sometimes, 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 an improvement from older programmable thermostats that rely on 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 Issues

If it can’t get ample juice, Nest says you may encounter 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 unexpectedly turns on or off, or won’t stop running.
  5. Your system is producing weird 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 notice on your Nest thermostat’s screen, along the lines of “heating is delayed for 2:30 minutes.”
  8. The system fan is continuously working, won’t turn on or turns off and on repeatedly in a short period of time.

You may think something is wrong with your heating and cooling system, but if you just started using the Nest, we suggest you start with your thermostat right away. This is especially true if the weather is mild, and you haven’t been running your heat or air conditioning much.

Our Professionals Can Resolve Nest Thermostat Troubles

If you’ve attempted Nest thermostat troubleshooting on your own but can’t fix the dilemma, a smart thermostat specialist including one from Thurston Heating & Air Conditioning can assist you. We can narrow down the malfunction and put in a C-wire, if required.

Smart thermostats like the Nest are made to make your life more convenient, with automatic energy-efficient programming and the opportunity to monitor temps while you’re away from home. It’s a frustrating experience when yours won’t work like it should, but our heating and cooling pros at Thurston Heating & Air Conditioning can take care of the trouble quickly.

If you’re running into strange heating and cooling behavior with your new Nest, give us a call at 308-624-3485 to schedule your appointment today.