The Honeywell T9 thermostat takes the guesswork out of monitoring your home’s temperature. Using your smartphone, you can regulate your air conditioner, have it shut off at certain times, and even control your home’s humidity. The Honeywell Home App allows you to control compatible cameras, water leak detectors, and, you guessed it: its T9 thermostats. But can you also control the thermostat with SmartThings?

The Honeywell T9 Thermostat will work with SmartThings, as long as the device and the app are connected to the same Wi-Fi network. The SmartThings app acts as a hub where you can connect and control your various smart home appliances, including thermostats.

Continue reading to learn more about using SmartThings with your Honeywell T9 Thermostat. This article will also provide troubleshooting information if you run into any problems.

How to Connect Honeywell T9 Thermostat to SmartThings

First, you’ll need to download the SmartThings app. If you have an iPhone, SmartThings requires that your device be running on iOS 10 or higher. If you have an Android, make sure it is updated to Android 6.0 or later.

You will also need to create an account with SmartThings to use the app’s features. Once you’ve created your account and connected your devices to the same network:

  1. Open the SmartThings app.
  2. Select where it says Marketplace.
  3. Choose Thermostats.
  4. Scroll down to where it says Honeywell and choose your thermostat.
  5. Choose Connect Now.
  6. Enter your login details.
  7. Tap Accept.
  8. Select your Honeywell T9 Thermostat and select OK.
  9. Follow the prompts on the screen to select your thermostat again.
  10. Click Done twice.

You can learn more about pairing the app to your thermostat by watching this video.

Troubleshooting Honeywell T9 Connection to SmartThings

You should be able to connect your thermostat to the SmartThings app with no issues. However, here are some problems you may encounter while setting up your device and their solutions:

SmartThings Doesn’t Recognize Your Thermostat

There could be a few reasons why this is happening. For starters, try “force quitting” out of the SmartThings app, then relaunch it. Also, make sure that the app and thermostat are on the same network since this will make connecting the two easier.

You could also try resetting your thermostat. You can do this by following these steps:

  1. Hold down the menu button.
  2. Scroll through your choices until you get the Reset option.
  3. Press the button.
  4. Scroll until you see the Wi-Fi option.
  5. Re-enter your login information.

Note: These steps may differ between other thermostat models.

You Can Only Increase the Temperature by a Degree

On Honeywell’s community message boards, some users have lamented that they could only control their temperature by a single degree at a time, but you don’t have to deal with this!

By going into the SmartThings app, you can change the temperature by entering the desired number. If you do not have this option, try making the changes through the Honeywell Home App. This will give you further insight into your issue, as the problem could be with the SmartThings app.

Thermostat Isn’t Regulating Your Home’s Temperature

In the SmartThings app, you might make it 75 degrees in your house. A few hours later, you may realize that nothing (if anything) has changed. This is because your thermostat only sends information to your HVAC unit; it does not control the mechanisms themselves.

In other words, this could be an underlying issue with your air conditioning unit or other related appliances. In these situations, it best to call on a skilled professional to check out your HVAC system.

The Thermostat Is Malfunctioning

If your thermostat is malfunctioning, it could be a problem with its manufacturing. In this case, you could have up to two years to file a warranty claim, depending on the model you have.

Honeywell’s warranty covers factory-specific defects. So, for instance, if your thermostat suffered water damage, the warranty would not cover the cost of replacement or repairs. You can learn more about what Honeywell’s warranty covers by clicking here.

In Conclusion

Luckily for SmartThings users, the Honeywell T9 Thermostat works with the SmartThings app. Pairing the two entities takes but a few moments of your time, and all you need is a solid Wi-Fi connection to ensure the best possible results.

The Honeywell T9 Thermostat also works with Alexa! Learn more about connecting the devices here.