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

April 13, 2021

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

The Nest is compatible with a full range of 24-volt heating and cooling systems, but it’s always a smart idea to use the Nest thermostat compatibility checker before installing one. Don’t forget to check with your energy company for valuable rebates, as you might 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 yourself or call a HVAC professional like Discount Mechanical Heating & Plumbing Services. If you’re wiring it on your own, you’ll see 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. Most of the time, Nest says this isn’t an issue since the thermostat can pull adequate power from other heating and cooling wires.

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

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is better than older programmable thermostats that have 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 operate your heating and cooling system.

8 Common Nest Thermostat Malfunctions

If it can’t receive ample electricity, Nest says you might experience some of these problems:

  1. Bad battery life.
  2. Thermostat motion sensing won’t operate.
  3. Your thermostat sometimes disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t shut off.
  5. Your system is making strange noises, including 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 continuously working, won’t switch on or turns off and on rapidly in a short period of time.

You could think something is up with your heating and cooling system, but if you just installed the Nest, we suggest you start with your thermostat first. This is especially timely if the weather is mild, and you haven’t been using your heat or air conditioning consistently.

Our Pros Can Resolve Nest Thermostat Troubles

If you’ve tried Nest thermostat troubleshooting by yourself but can’t repair the problem, a smart thermostat pro including one from Discount Mechanical Heating & Plumbing Services can provide support. We can determine the malfunction and install a C-wire, if necessary.

Smart thermostats such as the Nest are designed to make your life easier, through automatic energy-efficient programming and the opportunity to keep an eye on temperatures while you’re on the go. It’s a frustrating experience when yours won’t operate properly, but our heating and cooling specialists at Discount Mechanical Heating & Plumbing Services can take care of the issue fast.

If you’re going through weird heating and cooling behavior with your new Nest, call us at 907-202-9798 to request your appointment right away.