Ecobee Thermostat Disconnecting from WiFi: Causes, Fixes, and Troubleshooting Guide

If you own an Ecobee thermostat, you may have encountered unexpected disconnections with your device. 

Having a smart thermostat that cannot connect to the WiFi network can be frustrating, causing it to lose its smart features and behave like a regular thermostat. 

This post will look at the probable causes of this problem and offer some solutions to help you troubleshoot it.

What causes an Ecobee thermostat to disconnect from WiFi?

Several reasons can cause your Ecobee thermostat to disconnect from WiFi. Here are some of the most common ones:

1. Weak WiFi signal

If your Ecobee thermostat is located too far from the WiFi router, it might experience a weak signal, causing it to disconnect from the network. 

This issue usually occurs in larger homes with many walls, floors, or other physical barriers that can obstruct the signal.

2. Router issues

Sometimes, the problem is not with the thermostat but with the WiFi router. The router may have connectivity issues, be unable to handle the connected device’s load or need a firmware update.

3. Firmware issues

Ecobee frequently releases firmware updates to improve the functionality and performance of its devices. 

If your thermostat runs on an outdated firmware version, it might cause connectivity issues and disconnection from WiFi.

4. Network settings

If you have recently changed your network settings or password, your thermostat might be unable to connect to the WiFi network. 

Additionally, some network security settings may interfere with the thermostat’s connection ability.

5. Power issues

If your thermostat is not receiving sufficient power, it might disconnect from WiFi. This issue usually occurs when the wires connecting the thermostat to the HVAC system are loose or the batteries need replacement.

How to fix Ecobee thermostat disconnection from WiFi?

Here are some solutions to help you fix the disconnection issues of your Ecobee thermostat:

1. Improve WiFi signal

If the issue concerns a weak WiFi signal, you can try moving your router closer to the thermostat or using a WiFi extender to boost the signal.

2. Router troubleshooting

You can try troubleshooting your router by resetting it, updating its firmware, or contacting your ISP if the problem persists.

3. Update firmware

If the issue is related to firmware, you can update your thermostat to the latest version. To check for updates, go to your thermostat’s “Settings” menu and select “System.”

4. Update network settings

If you have recently changed your network settings, you can update them on your thermostat by going to in the “Settings” menu and selecting “WiFi.”

5. Check the power source

If your thermostat is not receiving sufficient power, you can check the wires connecting it to the HVAC system or replace the batteries if it runs on battery power.

Troubleshooting guide: 

If none of the above solutions work, here is a guide to help resolve the disconnection issue:

1. Restart the thermostat

You can restart it by removing it from the wall plate and waiting a few seconds before reattaching it.

2. Reset network settings

You can reset your thermostat’s network settings by going to the “Settings” menu, selecting “WiFi,” and then “Forget network.”

3. Reset the thermostat

If the issue persists, you can reset your thermostat to its factory settings. To do this, go to the “Settings” menu, select “Reset,” and then “Reset to Factory.”

4. Contact Ecobee support

If none of the above solutions

If none of the above troubleshooting steps work, it might be time to contact Ecobee support. They can guide you through more advanced solutions or help you replace your device if necessary.


The Ecobee thermostat getting disconnected from WiFi can be annoying, but it can be fixed. Some of the most common things that can cause your device to disconnect from WiFi are a weak WiFi signal, problems with the router, firmware, network settings, or power. 

There are many ways to fix the problem, such as boosting the signal, updating the firmware, or resetting the network settings. 

With the solutions and troubleshooting guide in this article, you should be able to reconnect your Ecobee thermostat to your WiFi network and use its smart features again.

Read More: How to Program Ecobee Thermostat


  1. Can I use my Ecobee thermostat without WiFi?

You can still use your Ecobee thermostat without WiFi, but it will lose its smart features, such as remote control and automatic scheduling.

  1. How do I know if my thermostat is connected to WiFi?

You can check if your thermostat is connected to WiFi by going to the “Settings” menu, selecting “WiFi,” and checking if the device is connected to your network.

  1. How do I update my Ecobee thermostat firmware?

To update your Ecobee thermostat firmware, go to the “Settings” menu, select “System,” and choose “Software Update.” The device will check for the latest firmware version and prompt you to update if available.

  1. Why does my thermostat keep disconnecting from WiFi?

Your thermostat might disconnect from WiFi due to a weak signal, router issues, outdated firmware, network settings, or power issues.

  1. Can I fix my Ecobee thermostat disconnection issue by resetting my router?

Resetting your router might fix the issue if it is related to connectivity problems or outdated firmware. However, if the problem persists, you might need to try other solutions or contact Ecobee support.

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