Why Your Nest Thermostat Isn't Operating Right and How to Repair It

April 13, 2021

The Nest thermostat is one of the best-selling smart thermostats on the market today. And for good reason. It figures out your temperature preferences and creates an energy-efficient schedule to match. And through geofencing with your phone, the Nest Learning Thermostat and Nest E are aware of when you’re at your house or gone and can change temps to help you save even more.

The Nest can be used with a wide range of 24-volt heating and cooling systems, but it’s always a good idea to visit the Nest thermostat compatibility checker before getting one. Don’t forget to check with 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 hook it up on your own or contact a HVAC professional like McFadden Heating & Cooling. If you’re wiring it without help, you’ll notice 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 an issue since the thermostat can get adequate power from other heating and cooling wires.

Sometimes, your heating and cooling system could require that C-wire. And here’s why.

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is an improvement from aging programmable thermostats that rely on a combination of wiring and AA batteries for power. It relies on a rechargeable lithium-ion battery and wiring to connect to Wi-Fi, power its digital display and run your heating and cooling system.

8 Common Nest Thermostat Issues

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

  1. Poor battery life.
  2. Thermostat motion sensing is disabled.
  3. Your thermostat every now and then disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t turn off.
  5. Your system is producing weird 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 message on your Nest thermostat’s screen, along the lines of “heating is delayed for 2:30 minutes.”
  8. The system fan is constantly on, won’t switch on or turns off and on frequently in a short period of time.

You could believe something is up with your heating and cooling system, but if you just got the Nest, we recommend you start with your thermostat right away. This is especially true if the weather is temperate, and you haven’t been relying on your heat or air conditioning consistently.

Our Pros Can Solve Nest Thermostat Troubles

If you’ve gone through Nest thermostat troubleshooting on your own but can’t repair the issue, a smart thermostat specialist like one from McFadden Heating & Cooling can provide assistance. We can narrow down the malfunction and put in a C-wire, if required.

Smart thermostats including the Nest are designed to make your life simpler, with automatic energy-efficient programming and the ability to keep an eye on temperatures while you’re away from home. It’s an annoying experience when yours won’t work properly, but our heating and cooling professionals at McFadden Heating & Cooling can fix the issue quickly.

If you’re experiencing strange heating and cooling behavior with your new Nest, reach out to us at 1-866-781-0111 to set up your appointment now.