Smart Thermostats with Outdoor Temp Detection
ENERGY STAR certified smart thermostats whose control-feature list includes external temperature detection. The page matches the stated field only; it does not rate quality, noise, reliability or value.
At a glance
Most listings come from First Alert (12), Resideo (9), TCC (6), Alarm.com (4). Counts and ranges are calculated from the same official fields as the table below.
How models are selected
Rule: control features list external temperature detection. Models with no value for the field are left out; a missing value is never treated as zero. The list is sorted by Network standby, lowest first, which is an ordering and not a recommendation.
59 matching models
Showing the first 50 of 59, in the order stated above.
| Model | Connectivity | Temperature accuracystatic, as listed | Network standbyW | Control featureslisted |
|---|---|---|---|---|
| Google Nest T4### | Wi-Fi | 0.46 | 0.04 | 4 |
| Google Nest T3### | Wi-Fi | 0.27 | 0.06 | 4 |
| Verdant VX4-*TR- | Bluetooth, Zigbee, Other | 1.79 | 0.09 | 6 |
| Google Nest GA0####- | Wi-Fi | 0.3 | 0.1 | 4 |
| Google Nest GA05###- | Bluetooth, Other, Wi-Fi | 0.09 | 0.1 | 5 |
| Zen Thermostat ZEN-01 | Zigbee | 1.14 | 0.12 | 4 |
| TCC TH8321R | Other | 0.25 | 0.13 | 5 |
| TCC TH8110R | Other | 0.12 | 0.14 | 4 |
| TCC TH8320R | Other | 0.1 | 0.14 | 4 |
| Zen Thermostat ZEN-02 | Wi-Fi | 1.4 | 0.14 | 5 |
| Alarm.com TH6320ZW | Z-Wave | 0.59 | 0.17 | 3 |
| Ecobee EB-STATE5 | Bluetooth, Wi-Fi, Other | 1.01 | 0.17 | 7 |
| Honeywell Home TH6320ZW | Z-Wave | 0.59 | 0.17 | 3 |
| TCC TH8321WF | Wi-Fi | 0.2 | 0.17 | 4 |
| Resideo TH8732WFH | Wi-Fi | 0.37 | 0.18 | 4 |
| First Alert TH6220WF | Wi-Fi | 0.81 | 0.34 | 4 |
| First Alert TH6320WF2 | Wi-Fi | 0.86 | 0.34 | 4 |
| Resideo TH6220WF | Wi-Fi | 0.81 | 0.34 | 4 |
| Resideo TH6320WF2 | Wi-Fi | 0.86 | 0.34 | 4 |
| First Alert RCHT8610WF | Wi-Fi | 0.87 | 0.36 | 4 |
| Resideo RCHT8610WF | Wi-Fi | 0.87 | 0.36 | 4 |
| Pro1 CT855iSH | Wi-Fi | 1.36 | 0.47 | 4 |
| Pro1 L47-696 | Wi-Fi | 1.36 | 0.47 | 4 |
| Pro1 T855iSH | Wi-Fi | 1.36 | 0.47 | 4 |
| Vive TP-S-855iCRH | Wi-Fi | 1.36 | 0.47 | 4 |
| Lennox Lennox E40 Smart Thermostat | Bluetooth, Wi-Fi | 1.03 | 0.57 | 4 |
| Aprilaire S86WMUPR | Wi-Fi | 0.65 | 0.6 | 3 |
| First Alert TH2 | Wi-Fi | 0.45 | 0.61 | 1 |
| Verdant VX4-*TW- | Bluetooth, Zigbee, Other | 1.45 | 0.81 | 6 |
| Ecobee EB-STATE7 | Bluetooth, Other, Wi-Fi | 0.73 | 0.88 | 5 |
| TCC TH9320WF | Wi-Fi | 0.37 | 0.9 | 4 |
| Honeywell Home TCC | Wi-Fi | 0.39 | 0.93 | 3 |
| Resideo RTH9585WF | Wi-Fi | 0.36 | 0.93 | 3 |
| Alarm.com B36-T10 | Z-Wave | 0.35 | 1.11 | 8 |
| Lennox iComfort M30 Smart Thermostat | Wi-Fi | 0.93 | 1.23 | 5 |
| TCC THX9421R | Other | 0.12 | 1.38 | 5 |
| Alarm.com ADC-T40K-HD | Bluetooth, Z-Wave | 1.46 | 1.53 | 5 |
| tekmar 564 | Wi-Fi | 0.59 | 1.57 | 2 |
| First Alert RCHT9*10WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| First Alert TH6320WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| First Alert THX***WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Fisrt Alert RCHT9*10WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Honeywell Home TH6320WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Honeywell Home THX***WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Resideo RCHT9*10WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Resideo TH6320WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Resideo THX***WF | Other, Wi-Fi | 0.35 | 1.65 | 5 |
| Ecobee EB-STATE6 | Bluetooth, Other, Wi-Fi | 0.53 | 1.83 | 7 |
| NUVE Smart Thermostat SAMO | Wi-Fi | 1.69 | 1.89 | 4 |
| American Standard ACONT824AS52DB | Wi-Fi, Z-Wave | 0.73 | 1.9 | 5 |
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Sources
- ENERGY STAR product guidance for smart thermostats (data.energystar.gov, updated 2026-11-06)
We compile and compare published data; we do not run our own product tests. See How We Compare.