Why Your Nest Thermostat Isn’t Working and How to Repair It


The Nest thermostat is one of the best-selling smart thermostats you can buy. 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 vast range of 24-volt heating and cooling systems, but it’s always a smart idea to visit the Nest thermostat compatibility checker before installing one. Don’t forget to contact your energy supplier for valuable rebates, because you could be able to get a Nest for free or close to it.

Once you’ve made sure it’s compatible, you can either wire it without help or contact an HVAC pro like Air Houston Mechanical LLC. If you’re putting it in on your own, you’ll see a terminal for the C-wire or common wire. This wire is solely used for powering your thermostat. If your house 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 draw ample power from other heating and cooling wires.

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

Why Your Nest Keeps Losing Power and Other Issues

The Google Nest Thermostat is a step up from aging programmable thermostats that use 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 draw enough power, Nest says you may experience some of these issues:

  1. Bad battery life.
  2. The thermostat motion sensing is disabled.
  3. Your thermostat now and then disconnects from Wi-Fi.
  4. Your system suddenly turns on or off or won’t turn off.
  5. Your system is producing strange 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.
  7. There is a delay notification on your Nest thermostat’s screen, like “heating is delayed for 2:30
  8. minutes.”

  9. The system fan is continuously on, won’t switch on, or turns off and on repeatedly in a short period.
  10. You might worry something is suspect with your heating and cooling system, but if you just started using the Nest, it’s best to start with your thermostat first. This is especially pertinent if the weather is mild, and you haven’t been using your heat or air conditioning frequently.

    Our Specialists Can Solve Nest Thermostat Issues

    If you’ve tried Nest thermostat troubleshooting on your own but can’t repair the problem, a smart thermostat pro like one from Air Houston Mechanical LLC can assist you. We can narrow down the malfunction and add 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 option to keep an eye on settings while you’re away from home. It’s a frustrating experience when yours won’t operate properly, but our heating and cooling specialists at Air Houston Mechanical LLC can resolve the trouble in no time.

    If you’re experiencing weird heating and cooling behavior with your new Nest, give us a call at (832) 501-3419 to schedule your appointment now.

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