T9 Smart Thermostat

Full Price: $169.99
Retail Price: $169.99
Save up to $100 with instant rebates
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Limit of 2 thermostat rebates per customer

Be sure to check compatibility with your HVAC system here.

Sense the temperatures in the places that matter most with the T9 Smart Thermostat. Focus on the rooms you choose by adding Smart Room Sensors and setting a schedule or let the sensors respond to your lifestyle.
thermostat on wall
The T9 Smart Thermostat works with Smart Room Sensors to help you adjust the temperature from anywhere and stay cozy in the rooms that matter.

Place sensors where you want to see each room's temperature and humidity. Use the multi-room display on the thermostat's touchscreen — or in the Honeywell Home app — to focus on rooms based on occupancy or a specific schedule you choose. When focusing on multiple rooms, the T9 works toward creating an average temperature, balancing the needs across the whole home.

Thermostat with sensor
Family sitting comfortably on the floor while reading a book
The ENERGY STAR® certified T9 Smart Thermostat can be programmed with a schedule or allowed to adapt to your busy life on the fly.

ENERGY STAR certified thermostat

Honeywell T9 Thermostat with Sensor
Control and monitor usage from anywhere simply by using your smartphone or tablet, integrate it completely with your smart home, and enroll in utility rebate programs so you can earn rewards for helping save energy. Now your home can always feel exactly how you like it, all while saving money on your energy bills.
T9 app on cell phone
The Honeywell Home T9 Thermostat is easy to install yourself.

Note: Check your thermostats wiring compatibility before install.

View Installation Details

Need more help? Visit the Honeywell Home support pages.

The T9 also allows you to monitor your system when you're away to minimize wasted energy and money with the Honeywell Home App.
thermostat on wall in hallway


remote control from phone tablet laptop devices

Includes remote control capabilities from your phone, tablet or laptop.

Conserve Energy Geofencing

Helps to ensure energy is conserved when you're away with geofencing capabilities.

Tips to help reduce your energy use

Track your heating and cooling trends and compare your energy usage to similar homes in your area. Get tips to help you reduce your energy use and make your home more efficient and help save on your bills.

Filter Change Notifications

The T9 learns your home's heating and cooling cycles. Be alerted when it's time to change your filter or when temperatures swing drastically — and frost protection can cycle if it gets too cold.

Family Accounts

Allows you to set up accounts for everyone in the family, so they can make adjustments from their mobile devices.


Comes with a three-year limited warranty.

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