# Honeywell Home X2S Smart Thermostat

*Honeywell Home / RTH2CWF/U, RTHC2CWF, RTH2SMC*

> The Honeywell Home X2S Smart Thermostat is a Matter-certified Wi-Fi thermostat that works with HomeKit, Alexa and Google Assistant and needs a C-wire. It suits HomeKit and Home Assistant users, with native support through Matter over Wi-Fi. Google Home and Alexa users reach it through an integration (the maker's cloud).

- Canonical page: https://smarthomecanon.com/devices/honeywell-home-x2s-smart-thermostat
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Honeywell Home](https://smarthomecanon.com/brands/honeywell-home) |
| Category | Thermostat |
| Model numbers | RTH2CWF/U, RTHC2CWF, RTH2SMC |
| Status | Current[^1] |
| Matter certified | withheld |
| Matter | withheld |
| Display | Large screen[^1] |
| Radar occupancy sensor | unknown |
| Room sensors | unknown |
| Indoor humidity shown | unknown |
| Humidity and ventilation control | unknown |
| Video doorbell viewer | unknown |
| Stages | Up to 2 heat/2 cool conventional, up to 2 heat/1 cool heat pump[^1] |
| Wi-Fi | 2.4 or 5 GHz (802.11 b/g/n)[^1] |

## Integration paths

**How the Honeywell Home X2S Smart Thermostat connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter / Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) | withheld | unknown | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | Resideo Connect app, Wi-Fi network[^1] | unknown | unknown |

**Platform support for the Honeywell Home X2S Smart Thermostat**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter / Wi-Fi | [HomeKit](https://smarthomecanon.com/platforms/homekit) | withheld |  |
| Matter / Wi-Fi | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld |  |
| Wi-Fi cloud | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Via integration[^1] |  |
| Wi-Fi cloud | [Google Home](https://smarthomecanon.com/platforms/google-home) | Via integration[^1] |  |

## Related pages

- [Honeywell Home X-series smart thermostats](https://smarthomecanon.com/lines/honeywell-home-x-series-smart-thermostats) (line)
- [Honeywell Home](https://smarthomecanon.com/brands/honeywell-home) (brand)
- [Matter over Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) (protocol)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)

## Sources

[^1]: Honeywell Home: X2S Smart Thermostat product page. https://www.honeywellhome.com/products/x2s-smart-thermostat (manufacturer, checked 2026-10-16)