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

Matthew N. Henry

I highly propose the $two hundred Resideo Honeywell Property T9 Clever Thermostat. In addition to its easy app and optional Alexa and Google Assistant voice controls, the T9 arrives with a remote sensor known as a Clever Area Sensor. It also has geofencing capabilities that routinely modify your house and away settings based mostly on your phone’s area. 


  • Uncomplicated to put in
  • Uncomplicated app
  • Handy options like geofencing

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  • $two hundred is a reasonable cost, but the worth could be improved

You can purchase the thermostat with no the Clever Area Sensor for $one hundred seventy, putting its cost in line with designs 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 marketed in a two-pack for $79.

The Resideo Clever Area Sensor, also sold independently for $forty each individual, has temperature, humidity and proximity detection. Its comparatively smarter remote sensor, furthermore its trusted geofencing, set the T9 aside from its likewise priced opposition. 

The T9 thermostat is easy to set up, as well. Below are the ways, in brief, but be certain to chat to a professional electrician if you have any concerns or fears about your specific HVAC process:

  • Convert off energy to your thermostat at the circuit breaker
  • Remove the faceplate of your recent thermostat 
  • Choose a image of your recent wiring for reference
  • Put in Resideo’s integrated C-wire adapter (if you will not have a C-wire I did, so I failed to need to have the C-wire adapter)
  • Remove the relaxation of your old thermostat
  • Feed the wires by the T9’s base plate
  • Use a level and mark the places wherever you need to have to drill new holes
  • Attach the thermostat wires and screw the base plate to the wall
  • Join the T9’s faceplate to the baseplate and turn the energy again on at the circuit breaker

You must see a light-weight arrive on, indicating that energy is going to the thermostat.


This remote temperature and humidity sensor is integrated with your T9 invest in.

Chris Monroe/CNET

Next arrives the app setup. Down load the Honeywell Property app and produce an account. Choose the furthermore signal to increase a new device and then choose “T9 or T10 Pro” from the record of choices. The app will then start off to glimpse for your thermostat, inquire you to produce a house, such as assigning it a identify and providing your deal with (this phase is necessary for geofencing to work).

The app will inquire you different concerns about your most popular temperature settings and give you the possibility to empower geofencing. You can personalize the house/away manner geofencing radius in the Honeywell Property app. When you leave the space, your telephone will tell the thermostat to swap to away manner when you return, it will swap to house manner. 

Incorporate your Clever Area Sensor specifically on the thermostat. Faucet the menu button, then Gadgets & Sensors. Put in the integrated AAA batteries and stick to the ways to identify your sensor. You can use your Clever Area Sensor as your default temperature sensor (as an alternative of the thermostat), giving you extra regulate in rooms that tend to run cooler or hotter than the relaxation of the household. The sensor also has proximity detection, so it is familiar with if you happen to be in the exact same place and can modify the temperature routinely for you based mostly on wherever you are. 

I achieved out to Resideo about what area knowledge it collects from the Clever Area Sensors. “We only use the recent state (occupied/unoccupied), if the user is making use of the “Lively Rooms” function (which adjusts your thermostat dynamically based mostly on the place you happen to be in). We do not keep the sensor occupancy state for analytics functions,” a Resideo spokesperson informed me over email. Read Resideo’s privacy policy in this article.

Examine extra: Best good thermostats for 2020

General, the T9 is a excellent good thermostat that is easy to set up and use. I wish it were being a little bit extra affordable — extra like $a hundred and fifty — but its geofencing, Clever Area Sensor and normal overall performance labored reliably for me all through my tests. This device can also be extra to a broader Honeywell Property security and automation process, making it a excellent possibility if you want to scale up your good house. 

I nevertheless like the Ecobee SmartThermostat very best as considerably as higher-close good thermostats go, but the T9 definitely retains its very own alongside the Nest E and the Ecobee three Lite. 

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