Nest Learning Thermostat 4th gen (US) vs Honeywell Home T9 (US)
Smart thermostats · For the US and Canada
- Both work with Apple Home, Google Home and Amazon Alexa.
- The Nest Learning Thermostat 4th gen (US) works with Home Assistant; for the Honeywell Home T9 (US) it isn't confirmed.
- The Honeywell Home T9 (US) works with SmartThings; for the Nest Learning Thermostat 4th gen (US) it isn't confirmed.
- They also differ on: Matter, controls and power.
Side by side
| Fact | Nest Learning Thermostat 4th gen (US) | Honeywell Home T9 (US) |
|---|---|---|
| Matter | Yes, over Wi-Fi[2],[3] | Unconfirmed |
| Apple Home | Via Matter[2],[3] | Yes[2],[4] |
| Google Home | Yes[1],[2] | Yes[2] |
| Amazon Alexa | Yes[4],[7] | Yes[2] |
| SmartThings | Unconfirmed | Yes[2] |
| Home Assistant | Yes[5],[8] | Unconfirmed |
| Radio | Wi-Fi[6] | Wi-Fi[1] |
| Hub required | No[1],[2] | No[1] |
| Local control | Unconfirmed | Unconfirmed |
| Type | Wall thermostat[1] | Wall thermostat[1] |
| Controls | Most 24 V systems, incl. heat pumps[6] | Most 24 V heat, cool and heat pump systems[5] |
| Power | No C-wire needed in most homes[6] | C-wire (24 V); adapter included[3],[4] |
A bar on the left marks the rows where they differ. Numbers in brackets lead to the source on each device's own page, which also has the notes and what to check before you buy. Checked against official sources; the older of the two records was verified on . How we verify.
Quick answers
- Nest Learning Thermostat 4th gen (US) or Honeywell Home T9 (US): which works with Apple Home?
- Both. The Nest Learning Thermostat 4th gen (US) works through Matter; the Honeywell Home T9 (US) works directly. More smart thermostats for Apple Home
- Nest Learning Thermostat 4th gen (US) or Honeywell Home T9 (US): which works with Google Home?
- Both work with Google Home directly. More smart thermostats for Google Home
- Nest Learning Thermostat 4th gen (US) or Honeywell Home T9 (US): which works with Amazon Alexa?
- Both work with Amazon Alexa directly. More smart thermostats for Amazon Alexa
- Nest Learning Thermostat 4th gen (US) or Honeywell Home T9 (US): which works with SmartThings?
- Confirmed only for the Honeywell Home T9 (US). The Nest Learning Thermostat 4th gen (US) isn't confirmed either way; the Honeywell Home T9 (US) works directly. More smart thermostats for SmartThings
- Nest Learning Thermostat 4th gen (US) or Honeywell Home T9 (US): which works with Home Assistant?
- Confirmed only for the Nest Learning Thermostat 4th gen (US). The Nest Learning Thermostat 4th gen (US) works directly; the Honeywell Home T9 (US) isn't confirmed either way. More smart thermostats for Home Assistant
Full details and sources: Nest Learning Thermostat 4th gen (US) · Honeywell Home T9 (US)