Last recorded priceOct 6, 2026$209.00
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| Feature | Honeywell Home T9 Smart Thermostat | Sensi Touch smart thermostat | Winner |
|---|---|---|---|
| Rating | 4.3 | 4.5 | Sensi Touch smart thermostat |
| Warranty | 2 years | 3 years | Sensi Touch smart thermostat |
| Included accessories | Temperature Sensor | None | Honeywell Home T9 Smart Thermostat |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant | Honeywell Home T9 Smart Thermostat |
| Sensors | Proximity / Motion, Occupancy, Temperature, Humidity | Temperature, Humidity | Honeywell Home T9 Smart Thermostat |
| Alerts | Temperature Alerts | None | Honeywell Home T9 Smart Thermostat |
| System Health Monitor | YES | NO | Honeywell Home T9 Smart Thermostat |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Screen | YES | YES | Tie |
| Energy Savings | YES | YES | Tie |
| Voice Control | YES | YES | Tie |
| Speaker | NO | NO | Tie |
What the differences mean
Included room sensor
The Honeywell Home T9 Smart Thermostat ships one Smart Room Sensor rated for up to 200 feet, so multi-room prioritisation works straight from the box. The Sensi Touch smart thermostat includes no remote sensor, and it does not support external temperature sensors at all.
Occupancy sensing
The Honeywell Home T9 Smart Thermostat detects occupancy through its room sensors and can hold a chosen room at temperature or follow the occupied one. The Sensi Touch smart thermostat has no occupancy sensor, only its own temperature and humidity readings.
Alerts and maintenance
The Honeywell Home T9 Smart Thermostat sends temperature alerts and adds filter change and maintenance reminders through its system health monitor. The Sensi Touch smart thermostat sends no alerts and has no maintenance reminders.
Display and warranty
The Sensi Touch smart thermostat has the larger 4.3 inch colour touchscreen and the longer 3 year warranty. The Honeywell Home T9 Smart Thermostat has a colour touchscreen of an unpublished size and a 2 year warranty.
Price and app
The Sensi Touch smart thermostat is the lower priced of the two and its app draws steady praise for guided wiring and simple schedules. The Honeywell Home T9 Smart Thermostat costs more and its Resideo app is the part owners criticise most, including the permanent hold that overrides the schedule.
Which one to buy if
- you want to prioritise a bedroom or home office
The Honeywell Home T9 Smart Thermostat bundles a room sensor and detects occupancy, so it can hold a chosen room at temperature.
- you want the lowest price for a solid thermostat
The Sensi Touch smart thermostat costs less and covers scheduling, remote control and every major platform.
- you want a longer warranty
Its 3 year warranty beats the 2 years on the Honeywell.
- you want the bigger screen
The Sensi's 4.3 inch colour touchscreen is the larger of the two.
- you want filter and maintenance reminders
The Honeywell's system health monitor tracks filter changes and upkeep.
- + Included accessories: Temperature Sensor
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors
- + Sensors: Proximity / Motion, Occupancy, Temperature, Humidity
- - Rating: 4.3 vs 4.5
- - Warranty: 2 years vs 3 years
- + Rating: 4.5
- + Warranty: 3 years
- - Included accessories: None vs Temperature Sensor
- - Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors
What owners say
Owners of both thermostats praise the install: the Honeywell Home T9 Smart Thermostat brings a C-wire adapter in the box and often fits an existing Honeywell wall plate, while the Sensi Touch smart thermostat guides you through matching the old wiring with basic tools. Honeywell Home T9 Smart Thermostat owners focus on the bundled sensors, describing a thermostat that detects the occupied room and optimises to it, and several rank it above Nest and ecobee with HomeKit pairing called the feature that makes it click. Their complaints are the fiddly Resideo app, a permanent hold applied when you change the temperature over Wi-Fi, and Smart Room Sensor batteries that some replace monthly. Sensi Touch smart thermostat owners highlight the clear 4.3 inch colour screen, the no-subscription app, built-in temperature and humidity sensing and a 3 year warranty, while their main friction is getting the 2.4 GHz Wi-Fi to pair on some routers. Neither group reports trouble with the core heating control.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Honeywell Home T9 Smart Thermostat
- Sensi Touch smart thermostat
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Frequently Asked Questions
Which is better overall: Honeywell Home T9 Smart Thermostat or Sensi Touch smart thermostat?
The Honeywell Home T9 Smart Thermostat when room balancing matters, because it includes a room sensor with up to 200 feet of range, occupancy detection, humidity sensing and filter reminders. The Sensi Touch smart thermostat is the better budget pick, with a lower price, a 3 year warranty and a larger 4.3 inch screen.
What is the biggest difference between the Honeywell Home T9 Smart Thermostat and the Sensi Touch smart thermostat?
Room awareness. The Honeywell Home T9 Smart Thermostat ships a room sensor and detects occupancy so it can heat the rooms in use, while the Sensi Touch smart thermostat has no remote sensor and no occupancy channel, relying only on the thermostat's own reading.
Does the Sensi Touch smart thermostat work with a remote room sensor?
No. The Sensi Touch smart thermostat does not support external temperature sensors and includes none, so it reads only the room its own body sits in. The Honeywell Home T9 Smart Thermostat is the one of the pair with a bundled sensor.
Does the Honeywell Home T9 Smart Thermostat work with Apple HomeKit?
Yes. The Honeywell Home T9 Smart Thermostat supports Apple HomeKit alongside Alexa, Google Assistant, SmartThings and Home Assistant. The Sensi Touch smart thermostat also supports all of those platforms, and neither supports Matter.
How far can the Honeywell Home T9 Smart Thermostat's room sensor reach?
Honeywell rates the Smart Room Sensor at up to 200 feet from the thermostat, though the usable range can be shorter depending on how the house is built. The Sensi Touch smart thermostat has no comparable remote sensor.
Who should buy which one?
Buy the Honeywell Home T9 Smart Thermostat for a home with a room that never matches the hallway and for occupancy-based prioritisation. Buy the Sensi Touch smart thermostat for a lower-priced, DIY-friendly thermostat with a big screen and a three-year warranty, accepting the absence of remote sensors.
Compare all 23 Thermostats side by side
You are looking at two of them. The full table lines up all Thermostats in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 23 Thermostats
- 51 specs compared
- 47 filters

