Comfort control

Welcome to ‘Just Right’

Sense the temperatures in the places that matter most with the T9 Smart Thermostat. Focus on the rooms you choose by setting a schedule — or let the sensors respond to your lifestyle, helping save energy when you leave and preparing that ideal temp for your return.

T9 Smart Thermostat
T9's Smart Room Sensor
Smart Room Sensors (sold separately)

Whole home coverage

Place Smart Room Sensors around your home to see each room’s temperature and humidity. Focus on specific rooms you choose or let the sensors focus on rooms people are in.

Sensors reach up to 200 feet, spreading across the home to increase the quality of signal and data sent to the T9 thermostat.

Automatic room control

T9 Smart Thermostat Smart Room Sensors helping a couple sleep comfortably

Help everyone sleep comfortably

“Alexa, check the temperature of the bedroom.” Focus your T9 Smart Thermostat on specific rooms, such as bedrooms, so everyone can get a cozy night’s sleep.

Requires Smart Room Sensor per monitored area.

T9 Smart Thermostat cooling the house as mom comes home with the kids

Auto home and away mode

With the Resideo app, using geofencing the T9 knows when you’re coming and going, so no matter your schedule, you can always come home to comfort and save energy when you’re away.

Simple setup and savings

Easily installing the T9 Smart Thermostat at home

Easy install

Feed your wires into the lettered ports of the wall plate, close the plate, and snap your T9 onto the wall. Then the T9 will self-configure, guiding you through a simple setup.

Woman looking at the monthly energy report from Honeywell Home on her smartphone

Monthly energy reports

Track your heating and cooling trends and get tips on reducing energy use so that you can help save on your energy bills.