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Honeywell Home Logo - Red

T9 Smart Thermostat with Sensor


Honeywell Home Logo - Red

T9 Smart Thermostat with Sensor


A temperature that’s ‘just right.’ Every night.

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.

Utility Rewards Available

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Works with Honeywell Home App

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Product Overview

Product Overview

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.

Whether it’s a song belted in the shower or a whispered secret, your air goes beyond simply carrying oxygen to circulating memories. Heavy or light, hot or cold, always unique to your home, the air you feel is more than its temperature setting. Our Air products and services work with you and for you, supporting and creating more comfortable surroundings.

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Take It All With You

Manage your Honeywell Home devices in the easy-to-use app, making it simple to control home comfort, monitor usage and more — from anywhere.

Worry less — get alerts if temperatures rise above or fall below your threshold as well as reminders to change your air filter. Plus, you don’t always know your schedule week-to-week. With location-based home and away modes, your smart thermostat can respond to your lifestyle, automatically adjusting your temperature and passing the savings onto you.

One of the Family

Love your existing devices? We do, too. Our products, apps and services play well with others so you can make home a little more harmonious. See how we support your home and fit into your life.
Works With...
Amazon AlexaGoogle AssistantIFTTTCortana


T9 Smart Thermostat with Sensor

Is Your Home Compatible?

Knowing your home's wiring can make a difference. Follow these step-by-step instructions to identify if your current wiring is compatible with this thermostat.

Getting Started

Get Started

Professional installations gets professional results. Find an authorized professional near you to complete your installation.



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User Guide for T9 Smart thermostat with Smart Room sensor (English)

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Installation T9 THERMOSTAT (English, French)

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Installation T9 THERMOSTAT (English, Spanish)

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Installation Guide for T9 THERMOSTAT with sensors (English, Spanish)

Document Resource Icon

Installation Guide for T9 THERMOSTAT with sensors (English, French)

Document Resource Icon

T9 Installation Help Insert, 2-Sided Card (English, Spanish)

Compare With Similar Products

  • Smart Home Integration

  • Auto Home/Away Scheduling (Geofencing)

  • Wi-Fi Type

    2.4 and 5.0 GHz
  • Supports Additional Sensors

    Up to 20
  • Prioritize Multiple Rooms

  • Eligibility For Utility Rebates

  • Filter Change Alerts

  • App

    Honeywell Home
  • How to Buy

    Buy Now