Ecobee Calibrating Heat Cool Disabled – What To Do

If you own an Ecobee thermostat, you may encounter a message that says “Calibrating Heat/Cool Disabled.” This message is an indication that the sensor is working to obtain an accurate temperature reading of your home. The calibration process takes place after the initial setup or a system reboot and usually lasts between 5 to 20 minutes. However, if the calibration process persists for longer periods or occurs frequently, it may signal an underlying issue with the thermostat or your HVAC system.

Key Takeaways:

  • Ecobee thermostats may display the “Calibrating Heat/Cool Disabled” message while measuring the indoor temperature.
  • Calibration typically occurs during initial setup, system reboots, or after specific events.
  • If calibration takes longer than 20 minutes or occurs frequently, there may be an issue with the thermostat or HVAC system.
  • To fix the calibration issue, you can try restarting the thermostat, checking the wiring, or contacting Ecobee support.
  • If incorrect temperature readings persist, you can manually adjust them in the Ecobee settings menu.

Why Does Ecobee Keep Saying Calibrating?

The Ecobee thermostat says “calibrating” when it is measuring the indoor temperature of your home. This calibration process usually occurs during the initial system setup or after a system reboot.

Several events can trigger the need for calibration, including Ecobee firmware updates, power outages, furnace overheating, or tripped float switches. These situations may disrupt the accuracy of temperature readings, requiring the Ecobee thermostat to recalibrate and ensure precise control over your home’s heating and cooling systems.

During the calibration process, the Ecobee will temporarily disable its heating and cooling functions, as well as other features, to focus solely on obtaining an accurate temperature reading. This temporary disablement is necessary for the system to recalibrate effectively and provide optimal performance once the calibration process is complete.

Understanding why your Ecobee thermostat keeps saying “calibrating” allows you to know that the device is actively working to provide you with the most accurate temperature readings, ensuring comfortable and efficient temperature control in your home.

How Long Does Ecobee Take to Calibrate?

The calibration process of the Ecobee thermostat typically takes 5-20 minutes. During this time, the thermostat’s sensor is working diligently to obtain an accurate temperature reading of your home. The calibration is necessary to ensure optimal performance and efficiency of your HVAC system.

If you notice that the calibration process lasts longer than the expected timeframe or if the Ecobee thermostat keeps returning to the calibration process frequently, it may indicate an underlying issue. Possible causes for prolonged calibration or frequent recalibration include wiring problems or network connection issues. These issues can interfere with the thermostat’s ability to communicate and receive accurate readings.

Factors Affecting Calibration Time:

  • Wiring Problems: Faulty or incorrect wiring connections can disrupt the calibration process and prolong the time it takes for the Ecobee thermostat to obtain accurate temperature readings.
  • Network Connection Issues: A weak or unstable network connection can also hinder the calibration process. It’s essential to ensure that your thermostat has a strong and stable connection to your home’s Wi-Fi network.

Fortunately, the number of Ecobee room sensors or smart sensors connected to the system does not affect the calibration time. So, whether you have one sensor or multiple sensors, the calibration process should still take the same amount of time.

Ecobee thermostat calibrating

How To Tell If Your Ecobee Is Calibrating

When your Ecobee thermostat is in the calibration mode, there are several indications that you can look out for:

  • The display will show a message like “Calibrating Heat/Cool Disabled” below the current temperature.
  • The Ecobee display may go blank and reboot during the calibration process.
  • The Ecobee app might display a temperature reading of -500 F or N/A instead of a valid temperature.

If you notice any of these signs persisting for more than 20-30 minutes, it may indicate an issue that requires further action.

Ecobee calibration process

Understanding the Calibration Process

The Ecobee thermostat goes into calibration mode to ensure accurate temperature readings. During this process, the thermostat temporarily disables its heating and cooling functionalities. By calibrating, the Ecobee sensor is working diligently to obtain precise temperature information for your home.

While the calibration typically lasts for 5-20 minutes, an extended or frequent calibration process might indicate an underlying problem with the thermostat or your HVAC system.

Steps to Fix Ecobee Calibrating Heat Cool Disabled

If your Ecobee thermostat is stuck in the calibration process, there are several steps you can take to fix the issue:

  1. Restart your Ecobee thermostat: Disconnect your thermostat from the wall and wait for a few minutes before reconnecting it. This simple restart can often resolve calibration issues.
  2. Reboot your router: Ensure a stable internet connection by restarting your router. Sometimes, a weak or unstable connection can interfere with the calibration process.
  3. Download the Ecobee runtime report: This report can help diagnose any power loss issues that may be affecting the calibration process. Analyze the report to identify potential problems and take appropriate action.
  4. Check the wiring: Verify that the thermostat wiring is correct. Incorrect wiring can disrupt the calibration process and prevent accurate temperature readings. Refer to the Ecobee installation guide or consult a professional if needed.
  5. Contact Ecobee support: If the calibration issue persists, reach out to Ecobee support for further assistance. Their team can provide expert guidance and troubleshooting steps to resolve the problem.

By following these steps, you can effectively address the “Ecobee Calibrating Heat Cool Disabled” message on your thermostat and ensure optimal performance.


What If Ecobee Calibrates Incorrectly?

In some cases, even after the calibration process is complete, the Ecobee thermostat may still display incorrect temperature readings. This can be frustrating, but there are steps you can take to address the issue.

  1. Manually Adjust Temperature: If you notice that your Ecobee is consistently showing inaccurate readings, you can manually adjust the temperature in the Ecobee settings menu. This will help align the displayed temperature with the actual temperature in your home.
  2. Remove and Reboot: If the calibration error is significant and renders the thermostat almost useless, you can try removing the thermostat from the wall to force a reboot. This may help reset the calibration and resolve the issue.

By following these steps, you can troubleshoot and resolve any calibration issues with your Ecobee thermostat, ensuring accurate temperature readings and optimal performance.

Below is an example table showcasing the potential temperature discrepancies you may encounter:

Displayed Temperature Actual Temperature
75°F 72°F
68°F 70°F
80°F 77°F


With the right adjustments and troubleshooting, you can ensure that your Ecobee thermostat provides accurate and reliable temperature readings, keeping your home comfortable and energy-efficient.


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