Honeywell Home
Honeywell Home T9 Smart Thermostat
Bridges · And More
HomeKit onlyBridgeWi-Fi
Where to buy
- Honeywell Home websitehoneywellhome.com
- The Home Depothomedepot.com
- Menards$159.31 · menards.com
- Target$32.49 · target.com
Search other stores
Store links open the product’s own page, matched to this accessory by name and model number. Prices are what each store showed on 22 October 2026 and will have changed, and stock isn’t checked; check that the model you buy says it works with Apple Home or Matter.
From store listings
$32.49–$159.31 at 2 stores on 22 October 2026.
From the Bing Shopping page for “Honeywell Home T9 WiFi Smart Thermostat with Touchscreen and Room Sensor”.
In ReReHome
Bridge settings and a list of the accessories behind the bridge.
And every other characteristic or Matter attribute it exposes.
Connectivity
- Wi-Fi
How it reaches your home
- HomeKit over Wi-Fi
Identifiers
| Manufacturer | Honeywell Home (Resideo) |
|---|---|
| Model / SKU | 03842 |
| Model / SKU | T9 Smart Thermostat (RCHT9510WF) |
Reported versions
| Version | Date | Source |
|---|---|---|
| Firmware 1.3.8 | homedevices.app |
Compatibility notes
- T9 gained HomeKit/Siri support via update (Cult of Mac, 2021-11-10); T9 Smart Room Sensors are bridged through the thermostat.
- Reported by HomeKit users in the HomeDevices community catalog (1 record, US); not on Apple's accessory page.
- Category from the HomeKit category reported by the record.
