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How Long Do Nest Thermostats Last?

A Nest Thermostat should last for at least 10 years. But frankly, the product is still quite new so there ain’t much data to support this claim yet. However, the product is very well built and I don’t see any reason to believe otherwise.

Many smart house owners already consider the Nest Thermostat as one of the fundamental home appliances that they need to have for their smart home.

The reason is that they realize that Nest Thermostats are safe, easy to use, reliable, and ensures to give the advantages that a smart thermostat should give like saving energy and being a more green and economic solution.

Accordingly, if you are directly looking for a great thermostat, you should consider the Nest Thermostats as one of your best options.

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There’s a lot of supposedly intelligent thermostats available in the market that are guaranteed to be quite smart, yet the Nest is some next-level technology stuff. It utilizes AI algorithms to become familiar with your routines and schedules.

Using machine learning and AI (Artificial Intelligence) to solve many of the trivial issues and tasks that humans are incapable of doing like constantly keeping the room at a fixed temperature, the Nest Thermostat can save you are great amount on your energy bill.

Reasons why your Nest Thermostat might break

The average smart thermostat today seems to last about 10 years. But from my point of view, the Nest Thermostat is very well built and also designed with better long-lasting materials than most other smart thermostats on the market.

But there still might be issues that cause your Nest Thermostat to break.

The most likely scenario is the battery.

The Nest Thermostat uses a battery to keep its screen and the internal computer powered. The Nest Thermostat is very dependent on this battery and doesn’t function at all without it.

This means that the whole device relies on this battery to function well.

Frankly, I can’t see many scenarios where this battery will be broken or depleted. The battery is constantly recharging and even if this fails you can charge it manually, this I’ll explain further down.

Problems with Nest thermostat

Here is a list of problems and issues you might encounter using a Nest thermostat.

  1. Bad or broken battery.
  2. Disconnected from your home WiFi.
  3. In-built AI doesn’t controll heating and/or cooling properly.
  4. Motion sensers obstructet or in another way not functionen.
  5. Suddenly reboots or completely shutdown.
  6. Over heating due to clogged air and dust in the filter.
  7. Unresponsive display or unresponsive to changes made from your phone.

These “common” problems are not really that common. But they are worth mentioning. Personally, I’ve experienced a bad battery and sudden reboots.

How does a Nest Thermostat charge?

On the back of the Google Nest thermostat, there’s a USB port that can be utilized to rapidly charge the battery.

Using your heating and cooling system wires, the Nest thermostat keeps its internal battery charged. But if there’s any problem, the battery may deplete.

To save battery life, the thermostat display will automatically turn off and it might be disconnected from Wi-Fi. If it gets too low then you won’t have the option to control your thermostat.

There are a few approaches to charge the Nest Thermostat, yet it’s critical to check a couple of things before charging your thermostat because, during normal use, you don’t need to charge your nest thermostat.

The Nest Thermostat while working appropriately should charge automatically from the power gave by your HVAC equipment.

Check the power switch

I’ve known many individuals who thought their Nest was broken if their HVAC power system was coincidentally turned off while cleaning, renovating, or by a kid. There is commonly a light switch next to your HVAC system that controls the power of your HVAC equipment. Make sure that it is on.

With the power on the Nest will regularly charge itself. If the power has been off for a day then it might take a few hours for the Nest to charge. This is a typical issue and has happened to a lot of individuals.

Remove nest from charge

If the Nest hasn’t been charging or you can’t determine what is happening with your Nest Thermostat then an incredible method to kick off it is to take it off and charge it.

This fills two needs, your Nest battery will be charged, and with the battery charged it will assist you with finding any issues you may have with your Nest, Nest Wiring, or HVAC.

To charge the Nest you should remove it from the wall and you can use a standard cell phone charger to charge it, you simply need to have a USB wire or you can get a charger or a cable for your Nest thermostat.

Use a common wire

If you have confirmed to ensure your power is on at your HVAC system and you’ve changed the thermostat manually by taking it off and connecting it in, you would now be able to test your HVAC System.

Set the Nest Thermostat back on the wall and see what is happening. If your Nest is perusing low power or won’t charge it might imply that you have to include a common wire transformer.

A common wire transformer is utilized to give power to the Nest if your HVAC doesn’t have enough power and won’t charge the Nest Thermostat.

Replace the nest battery

I don’t suggest replacing the Nest Battery until you have experienced the entirety of troubleshooting with Nest and confirmed the issue. It is an outrageous rarity that the Nest Battery would need to be replaced however, it can happen.

How long does a Nest Thermostat take to charge?

While charging a Nest Thermostat by using a USB, it usually takes half an hour (about thirty minutes) for your thermostat to charge. Although, if the battery is completely depleted, at that point it can take as long as two hours to recharge.

At the point when your thermostat is connected with USB, a red light will be seen at the top of the thermostat to ensure that your gadget is effectively charging.

Is replacing a Nest Thermostat easy?

In case you’re replacing or even if you’re keeping your Nest Thermostat, however, are essentially simply moving it to another house, you’ll actually need to reset it because the Wi-Fi network will be different, and more significantly, the cooling and heating systems of your new house maybe not quite the same as what your Nest Thermostat initially had set up.

Fortunately, it’s really fast and simple to reset your Nest Thermostat and uninstall it from the wall. You just need to follow these steps:

  1. Start by tapping on the Nest Thermostat unit until it shows you the main menu.
  2. Look to “Settings” and click on it.
  3. Look over right to one side and click “Reset”
  4. Pick “All Settings” at the bottom.
  5. Select “Reset” on the following screen to confirm.
  6. Turn the silver ring to one side until the dial moves right to the opposite side.
  7. Push on the unit to click “OK”.
  8. Then you’ll have 10 seconds to drop the reset if you’d like.
  9. Then it will start the factory reset process. This takes a little time when it’s set, you’ll see the language selection screen.

When you see the language selection screen, you can remove the primary unit of the Nest Thermostat and remove it from the wall plate. It will at present remain powered on because of the battery implied for power outages. However, you can let it run out and recharge it when you will install the nest thermostat later on.

How to install a Nest Thermostat?

For the Nest thermostat installation in your home, simply follow these easy and quick steps and you’ll be there.

Total Time: 30 minutes

Turn off your thermostat power

Find the proper circuit breaker and change it to the Off position.

Label the wires of your old thermostat

Each wire emerging from the wall should go into a particular labeled port on your old thermostat. Place the blue stickers in the Nest installation manual for the corresponding wires. In case you’re fortunate, the wires themselves will be color-labeled. If your nest thermostat is marked 120V or 240V or has thick wires, you have a high voltage, don’t associate these wires to the Nest.

Remove the old thermostat

Cautiously eliminate the wires driving from the wall into the thermostat, and afterward unscrew the gadget from the wall.

Point the position for the nest thermostat

String the wires through the midpoint of the Nest base plate and utilizing the little bubble level, ensure the Nest is level. You can use a pencil to point the two screw holes.

Connect the nest base with the wall

Utilize the included screws and screwdriver to tie down the base to the wall. Screw in the top screw first, yet before fixing it, utilize the level to ensure the base is even.

Connect the wires with the nest

Add the labeled wires into the particular ports on the Nest. A little tab will push down once the wire has been appropriately embedded.

Connect the nest display

Line up the little rectangular connector on the display’s back with the port on the base plate.

Turn the power on again

Change the circuit breaker to the ON position again.

Connect the nest to your Wi-Fi network

Follow the directions on the Nest’s display to find your remote and enter the password to connect.

Follow the on-screen setup guide

These extra steps will ensure that the Nest’s firmware is updated, the wires are connected appropriately by you, and tells the Nest the kind of power utilized for your heating system, and where to locate the Nest in your home.

Set the temperature

Turn the Nest to set your ideal temperature for when you’re home and outside.

Download the nest mobile application

This cell phone application, accessible for Android and iOS gadgets, will allow you to monitor and control your Nest distantly.
Following a week or so, the Nest will get familiar with your behavior, when you’re home and when you’re away, and should automatically set the temperature of your home.
Though by using your smartphone, you can also turn it on and off remotely, or locally by turning the Nest’s dial.

Connect your smart devices to nest

The Nest will work with a lot of smart devices and smart systems in your home, from smart hubs to Amazon Alexa and Google Home, even to smart locks.


Do Nest thermostats stop working?

Nest thermostats are very unlikely to stop working. Over time you can encounter problems that’ll cause your Nest thermostat to stop working such as a bad battery and overheating due to clogged dust or hair in the filter.

Can you replace the battery in a Nest thermostat?

No, you cannot replace the battery in a Nest thermostat. For a temporary fix, you can charge your Nest thermostat with a USB cable.

How is the Nest thermostat powered?

The Nest thermostat is primarily powered directly by your home’s electrical system or HVAC through a C-Wire, but it does have an in-built battery that’ll last a couple of hours in case of a power outage.

How long does Nest thermostat battery last

The longevity of the battery in a Nest thermostat should be beyond 10 years. The battery is a common lithium-ion battery that has a very long lifespan when not exposed to extreme environments.

The battery’s capacity should be able to last you for about 2 hours in case you have a power outage.

Wrap up

There’s a built-in battery in your Nest Thermostat. It is a battery back that is set inside the Nest Thermostat. It isn’t designed to be user-serviceable for the normal client, yet it can be replaced. You have to remove the Nest Thermostat from the wall and dismantle the screws on the back of the nest.

In case your Nest Thermostat is getting enough power from your HVAC system, your Nest Thermostat battery should keep going for quite a long time with no issue.

Many people are using their Nest Thermostats for years with the first battery that is yet going strong. So, if your Nest Thermostat is getting sufficient power from the HVAC system, the battery could last the lifetime of the Nest Thermostat.


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Author: Morten Pradsgaard

Morten has been working with technology, IoT, and electronics for over a decade. His passion for technology is reflected in this blog to give you relevant and correct information.