Honeywell Home T9 Smart thermostat knows what room you’re in

I highly advise the $two hundred Resideo Honeywell Home T9 Clever Thermostat. In addition to its clear-cut app and optional Alexa and Google Assistant voice controls, the T9 will come with a remote sensor called a Clever Home Sensor. It also has geofencing capabilities that quickly modify your residence and absent configurations centered on your phone’s site. 


  • Effortless to install
  • Straightforward app
  • Handy features like geofencing

Don’t Like

  • $two hundred is a sensible value, but the benefit could be much better

You can invest in the thermostat without the Clever Home Sensor for $a hundred and seventy, putting its value in line with models like the $169 Nest Thermostat E, as well as the $169 Ecobee three Lite. Google sells a Nest Temperature Sensor for $39, but it only has temperature sensing capabilities. Ecobee’s SmartSensors have temperature and proximity detection and are sold in a two-pack for $seventy nine.

The Resideo Clever Home Sensor, also sold independently for $40 just about every, has temperature, humidity and proximity detection. Its comparatively smarter remote sensor, moreover its reliable geofencing, established the T9 aside from its similarly priced competitors. 

The T9 thermostat is quick to established up, as well. Below are the methods, in quick, but be positive to speak to a skilled electrician if you have any concerns or concerns about your specific HVAC program:

  • Switch off electric power to your thermostat at the circuit breaker
  • Eliminate the faceplate of your recent thermostat 
  • Get a photo of your recent wiring for reference
  • Put in Resideo’s incorporated C-wire adapter (if you never have a C-wire I did, so I didn’t will need the C-wire adapter)
  • Eliminate the rest of your previous thermostat
  • Feed the wires by means of the T9’s base plate
  • Use a amount and mark the places in which you will need to drill new holes
  • Connect the thermostat wires and screw the base plate to the wall
  • Join the T9’s faceplate to the baseplate and change the electric power again on at the circuit breaker

You must see a gentle arrive on, indicating that electric power is heading to the thermostat.


This remote temperature and humidity sensor is incorporated with your T9 order.

Chris Monroe/CNET

Following will come the app setup. Obtain the Honeywell Home app and create an account. Choose the moreover indicator to insert a new product and then choose “T9 or T10 Professional” from the record of selections. The app will then start off to look for your thermostat, ask you to create a residence, which include assigning it a name and providing your tackle (this phase is required for geofencing to get the job done).

The app will ask you different concerns about your most well-liked temperature configurations and give you the possibility to allow geofencing. You can personalize the residence/absent mode geofencing radius in the Honeywell Home app. When you go away the spot, your cell phone will convey to the thermostat to change to absent mode when you return, it will change to residence mode. 

Increase your Clever Home Sensor right on the thermostat. Tap the menu button, then Products & Sensors. Put in the incorporated AAA batteries and comply with the methods to name your sensor. You can use your Clever Home Sensor as your default temperature sensor (in its place of the thermostat), providing you much more regulate in rooms that are likely to operate cooler or warmer than the rest of the house. The sensor also has proximity detection, so it knows if you might be in the exact same area and can modify the temperature quickly for you centered on in which you are. 

I arrived at out to Resideo about what site details it collects from the Clever Home Sensors. “We only use the recent state (occupied/unoccupied), if the consumer is building use of the “Energetic Rooms” element (which adjusts your thermostat dynamically centered on the area you might be in). We do not retail outlet the sensor occupancy state for analytics functions,” a Resideo spokesperson advised me more than e mail. Read Resideo’s privateness policy below.

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Over-all, the T9 is a excellent good thermostat that is quick to established up and use. I would like it were being slightly much more economical — much more like $150 — but its geofencing, Clever Home Sensor and standard general performance worked reliably for me all over my screening. This product can also be added to a broader Honeywell Home safety and automation program, building it a excellent possibility if you want to scale up your good residence. 

I however like the Ecobee SmartThermostat finest as far as large-conclude good thermostats go, but the T9 surely holds its personal alongside the Nest E and the Ecobee three Lite.