Honeywell Home T9 smart thermostat now has HomeKit support

Honeywell Home T9 smart thermostat now has HomeKit support

Resideo’s first consumer thermostat to enable remote temperature sensors, the Honeywell Home T9, has finally given a long-promised feature to its users: HomeKit.

The brand, which was spun out of Honeywell in 2018 and is licenced by Resideo, already has compatibility for Apple’s smart home system in its T5 thermostat, also known as Lyric T5, but it lacks external sensors. Instead of merely maintaining the correct temperature where the thermostat is, sensors can assist make sure you’re comfortable in the environment you’re in.


The Honeywell T9’s sensors are really good, according to Verge editor Dan Seifert, and can monitor humidity in addition to temperature, something neither Nest nor Ecobee’s remote sensors can accomplish. They can also detect motion and presence, and the system will adjust to rooms where humans are detected. The T9 costs $199 and includes one remote sensor in the box, with the ability to add up to 20 more.


Users may operate their Honeywell Home T9 smart thermostat via Siri or the Apple Home app, according to Resideo, thanks to the HomeKit connectivity. Once linked, you may utilise automation or ask Siri to set the temperature for you.

There is no built-in voice assistant, unlike the Ecobee smart thermostat, so you must use a HomePod Mini, iPhone, iPad, or Apple Watch to activate it. Resideo didn’t say if you’ll be able to utilise the sensors’ temperature or motion to activate routines in the Home app. Amazon Alexa and Google Home are already supported by the Honeywell Home T9.

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It’s unclear whether this matters, given that smart thermostats are included in the initial Matter specification (a new smart home standard that promises to unify linked devices in our homes). Because Resideo is on the board of the Connectivity Standards Alliance, which controls Matter, it’s probable that when the standard comes next year, its thermostats will be Matter-enabled. As long as the smart home ecosystem supports Matter, customers should be able to manage their thermostat with any smart home ecosystem of their choosing.

However, T9 users will be able to keep their toes warm this Christmas season by simply saying a few words to their Apple voice assistant.

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