Picture of the Honeywell RTH9580WF Wi-Fi thermostat, displaying the -Register Thermostat Online- message.

How to Register Honeywell WiFi Thermostat

To control your Honeywell smart t-stat remotely, you must first register and connect to it at the  Honeywell Total Connect Comfort (TCC)   web site.  So here, we show how to register Honeywell WiFi thermostat RTH9580WF online, on that site.





How to Register Honeywell WiFi Thermostat RTH9580WF Online: Prerequisite Steps

1. Install your Honeywell WiFi Thermostat

Skip this step if you’ve already installed your t-stat and it is powered on, and showing its Home screen.  If you haven’t, see our Honeywell Smart Thermostat Wiring Instructions RTH9580WF post for tips on mounting and wiring this new t-stat.

2. Connect your T-stat to your WiFi Network with Internet Access

Secondly, skip this step if you’ve already done this.  But if you haven’t, then see our Change WiFi Network on Honeywell Smart Thermostat RTH9580WF piece for tips on how to link the t-stat to your home or office WiFi network.

3. Create an Account on the Honeywell Total Connect Comfort (TCC) Web Site

Thirdly, you’ll need a working account over there to register and control your t-stat remotely.  Again, skip this step if you’ve already set up a TCC account.  If you have not, then visit the TCC web site here, and on the login page, click the  Create an Account  button, and then follow the instructions.

4. Gather the T-stat Info to Continue with How to Register Honeywell WiFi Thermostat

Now to add your t-stat to your TCC account, you’ll need its MAC address and CRC code.  Find this info printed in the manuals that come with a new t-stat.  But you may also get it from the t-stat itself, as follows.  But if you have this data already, then skip down to Step 5.





How to Register Honeywell WiFi Thermostat RTH9580WF Step by Step Instructions

5. Look at the T-stat Home Screen

Shown next.

Picture of the Honeywell RTH9580WF Wi-Fi thermostat, displaying the -Register Thermostat Online- message.
The Honeywell RTH9580WF Wi-Fi thermostat, displaying the -Register Thermostat Online- message.

6. Tap the Yellow Message Box

Find this on the left center of the screen, as shown in the last picture.

Then, this brings up a Notification screen, as shown next, that tells you that an online registration is needed.

Honeywell RTH9580WF Wi-Fi thermostat, displaying a Notification screen, showing that a registration is needed, with the -Wi-Fi Setup- button highlighted.
Honeywell RTH9580WF Wi-Fi thermostat, displaying a Notification screen, showing that a registration is needed, with the -Wi-Fi Setup- button highlighted.

7. Tap the   Wi-Fi Setup  Button

The   Wi-Fi Setup  screen displays then, as shown next.  Note that in this demo, we connect the t-stat to our 937T681J4059H_2G WiFi network, though it is as of yet,  unregistered.  Thus you should connect to the WiFi you pointed it at in Prerequisite Step 2 above.

We’ve “pink-painted over” our t-tat’s MAC address and CRC value in these pictures.

Picture of the Honeywell RTH9580WF Wi-Fi thermostat, displaying its -Wi-Fi Setup- screen, with the thermostat's MAC address and CRC number covered.
Honeywell RTH9580WF Wi-Fi thermostat, displaying its -Wi-Fi Setup- screen, with the thermostat’s MAC address and CRC number covered.

8. Write Down CRC and MAC Address Shown to Continue with How to Register Honeywell WiFi Thermostat

Now you will need these values from your t-stat in the steps next, to register it.

9. Visit the   Honeywell Total Connect Comfort   Web Site

Next, point your web browser at https://www.mytotalconnectcomfort.com/ .

You’ll then see the login screen, as shown next.

Picture of the Honeywell Total Connect Comfort web site, displaying its login page, with active account info filled in.
Honeywell Total Connect Comfort web site, displaying its login page, with active account info filled in.

10. Enter your TCC Account User Name and Password

11. Press the red    Login   Button

If this is the first time you’ve signed into the TCC web site, and you’ve never set up any locations before, then you’ll see the following screen. Furthermore, at that screen, you must set up at least one location to register your t-stat in.  We detail how to do that in the next steps.

Picture of the Honeywell Total Connect Comfort web site, displaying its -My Locations- Screen, with no locations defined.
Honeywell Total Connect Comfort web site, displaying its -My Locations- Screen, with no locations defined.

But if you already have defined this location, then that will appear on the  My Locations   screen, as shown in the next picture.  Skip ahead to step 12 in that case, to continue.

Picture of the Honeywell Total Connect Comfort web site, displaying its -My Locations- screen, with one location defined.
Honeywell Total Connect Comfort web site, displaying its -My Locations- screen, with one location defined.

11a. Tap the Black   Add Location   Button to Continue with How to Register Honeywell WiFi Thermostat

The    Add Location  screen then displays, as shown next.

Picture of the Honeywell Total Connect Comfort web site, displaying its -Add Location- screen, with location information filled in but covered.
Honeywell Total Connect Comfort web site, displaying its -Add Location- screen, with location information filled in but covered.

11b. Type in the Info Asked For About the Location you Want to Define

In our demo, we define a location named Graystone.  Enter the location’s name, physical address, region, city, state. But don’t forget to choose the location type (home or building).





11c. Tap the Red   Submit   Button

Next, the site displays the   Register Device   page, as shown next.  From here, jump down to Step 9 to continue.

Picture of the Honeywell Total Connect Comfort web site, displaying its -Register Device- page.
Honeywell Total Connect Comfort web site, displaying its -Register Device- page.

12.  Tap the   Settings   Button  on the Already-Defined Location

Following, you’ll then see the   Edit My Location   screen, as shown next.

Picture of the Honeywell Total Connect Comfort web site, displaying the -Edit My Location- page, showing no thermostats registered at the -My Apartment- location.
Honeywell Total Connect Comfort web site, displaying the -Edit My Location- page, showing no thermostats registered at the -My Apartment- location.

13. Tap the Black   Add Device   Button to Continue with How to Register Honeywell WiFi Thermostat

Find this near the lower left corner of the screen.

This brings up the   Register Device   screen, as shown next.

Picture of the Honeywell Total Connect Comfort web site, displaying its -Register Device- page.
Honeywell Total Connect Comfort web site, displaying its -Register Device- page.

14. Enter the MAC Address and CRC Value you Wrote Down in Step 4 Above

15. Tap the Red   Submit   Button

The system then briefly displays the   Device Registration In Progress   screen as shown next.

Picture of the Honeywell Total Connect Comfort web site, displaying its -Register Device, Registration In Progress- screen.
The Honeywell Total Connect Comfort web site, displaying its -Register Device, Registration In Progress- screen.

Next, after a few seconds, you get the  Thermostat Registration Successful   screen, as follows.

Picture of the Honeywell Total Connect Comfort web site, displaying its -Thermostat Registration Successful- screen, with the -View- button highlighted.
Honeywell Total Connect Comfort web site, displaying its -Thermostat Registration Successful- screen, with the -View- button highlighted.

16. Tap the Black   View   Button

This takes you then to your t-tat’s status screen, as shown next.

Picture of the Honeywall Total Connect Comfort Web Site Device Control Page.
Honeywall Total Connect Comfort Web Site Device Control Page

17. Done with How to Register Honeywell WiFi Thermostat !

Stop here.  Your t-stat is now registered. So, you may now control it via the internet and the TCC web site or app.  Enjoy.





Fixing Registration Problems

If you received an “already registered” message as you follow the steps above, then you’ll need either to contact the previous owner of the thermostat (if you bought it used) and have them delete that device from their TCC account.  Or if you cannot do that, you must call Honeywell customer service at 1-855-733-5465 for assistance.

Other Posts About the Honeywell RTH9580WF Thermostat

  1. Unregister Honeywell Thermostat RTH9580WF Instructions
  2. How to Calibrate Honeywell Thermostat Temperature RTH9580WF
  3. Honeywell Smart WiFi Thermostat Manual RTH9580WF
  4. Restore Factory Defaults, Honeywell Smart Thermostat RTH9580WF
  5. Setting Temperature Differential, Honeywell Smart Thermostat RTH9580WF

References for How to Register Honeywell WiFi Thermostat

  1. Wi-Fi Smart Thermostat (RTH9580WF) Official Product Page   from Honeywell
  2. User Guide for the Honeywell 9000 Series Color Touchscreen Thermostats   from Honeywell

Revision History

  • 2020-04-19: Added the Fixing Registration Problems section, and added more tags.
  • 2019-05-24: Tuned the targeting for ‘Register Honeywell WiFi Thermostat’ and added more tags.
  • 2017-03-05: Originally posted.