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 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 residence or away and can change temperatures 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 smart idea to check the Nest thermostat compatibility checker before purchasing 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 confirmed it’s compatible, you can either wire it yourself or hire a HVAC specialist like Air Houston Mechanical LLC. If you’re putting it in without help, you’ll see a terminal for the C-wire, or common wire. This wire is solely 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 an issue because the thermostat can pull enough power from other heating and cooling wires.

In some cases, your heating and cooling system may have to have 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 uses 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 Problems

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

  1. Poor battery life.
  2. Thermostat motion sensing won’t work.
  3. Your thermostat sometimes disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t turn off.
  5. Your system is producing odd noises, like 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 notification on your Nest thermostat’s screen, like “heating is delayed for 2:30 minutes.”
  8. The system fan is continuously running, won’t turn on or turns off and on repeatedly in a short period of time.

You could believe something is wrong with your heating and cooling system, but if you just installed the Nest, we advise you start with your thermostat initially. This is especially timely if the weather is mild, and you haven’t been using your heat or air conditioning frequently.

Our Professionals Can Resolve Nest Thermostat Troubles

If you’ve gone through Nest thermostat troubleshooting without help but can’t fix the issue, a smart thermostat specialist including one from Air Houston Mechanical LLC can provide support. We can identify the problem and add a C-wire, if needed.

Smart thermostats like the Nest are made to make your life easier, through automatic energy-efficient programming and the ability to keep an eye on settings while you’re on the go. It’s an annoying experience when yours won’t operate properly, but our heating and cooling pros at Air Houston Mechanical LLC can take care of the issue quickly.

If you’re experiencing strange heating and cooling behavior with your new Nest, give us a call at 832-777-1521 to request your appointment today.