ecobee
ecobee Smart Thermostat Premium
$259.99
Released 2022
Best Smart Thermostats · head-to-head
ecobee Smart Thermostat Premium vs GE Cync Smart Thermostat
A sourced, side-by-side comparison. GE Cync Smart Thermostat is cheaper at $119.99. Every spec and price links to its source.
GE Cync
GE Cync Smart Thermostat
$119.99Cheaper
Which is better: the ecobee Smart Thermostat Premium or GE Cync Smart Thermostat?
On the specs we track, they're closely matched. The GE Cync Smart Thermostat is the cheaper at $119.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | ecobee Smart Thermostat Premium | GE Cync Smart Thermostat |
|---|---|---|
| US price | $259.99 | $119.99 |
| Brand | ecobee | GE Cync |
| Released | 2022 | — |
| Display | 4-inch full-color LCD touchscreen, 540x540 pixels | Backlit LCD display (always on); button and app control (Control Type: Buttons and App) |
| Sensors included | Built-in temperature, humidity, occupancy (radar), proximity; includes one SmartSensor (temperature + occupancy) in box; up to 20 additional sensors supported | No remote sensor included (package contains 1 thermostat); Cync Room Temperature Sensors sold separately |
| Geofencing | Yes | — |
| Hvac compatibility | Most 24VAC systems: conventional 2H/2C, heat pumps 2H/2C + 2 stage AUX, boilers, PTACs, fan coil units (up to 3 fan speeds); Power Extender Kit included | Most residential 24V heating and cooling systems; designed for C-wire systems, Power Extender Kit (PEK) included for homes without a C-wire; 3- and 4-wire installation options |
| C wire required | No | No |
| Voice assistants | Amazon Alexa (built-in), Apple Siri (via HomePod/HomePod mini), Google Assistant, Samsung SmartThings, IFTTT | Amazon Alexa, Google Assistant (Google Home) |
| Energy reports | Yes | Yes |
| Release | 2022 | — |
Sources — ecobee Smart Thermostat Premium: ecobee.com (verified 2026-06-15). GE Cync Smart Thermostat: gelighting.com (verified 2026-07-10).
What's the difference between the ecobee Smart Thermostat Premium and GE Cync Smart Thermostat?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Display: ecobee Smart Thermostat Premium 4-inch full-color LCD touchscreen, 540x540 pixels vs GE Cync Smart Thermostat Backlit LCD display (always on); button and app control (Control Type: Buttons and App)
- Sensors included: ecobee Smart Thermostat Premium Built-in temperature, humidity, occupancy (radar), proximity; includes one SmartSensor (temperature + occupancy) in box; up to 20 additional sensors supported vs GE Cync Smart Thermostat No remote sensor included (package contains 1 thermostat); Cync Room Temperature Sensors sold separately
- Hvac compatibility: ecobee Smart Thermostat Premium Most 24VAC systems: conventional 2H/2C, heat pumps 2H/2C + 2 stage AUX, boilers, PTACs, fan coil units (up to 3 fan speeds); Power Extender Kit included vs GE Cync Smart Thermostat Most residential 24V heating and cooling systems; designed for C-wire systems, Power Extender Kit (PEK) included for homes without a C-wire; 3- and 4-wire installation options
- Voice assistants: ecobee Smart Thermostat Premium Amazon Alexa (built-in), Apple Siri (via HomePod/HomePod mini), Google Assistant, Samsung SmartThings, IFTTT vs GE Cync Smart Thermostat Amazon Alexa, Google Assistant (Google Home)
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
ecobee Smart Thermostat Premium
Three whitelisted testers (Tom's Guide, TechHive, Reviewed) rate the Ecobee Smart Thermostat Premium a top-tier smart thermostat. Reviewed lab-tested temperature accuracy against a NIST-certified thermometer; Tom's Guide and TechHive evaluated it hands-on qualitatively. All praise the premium redesign, easy app-guided install, broad smart-home compatibility, and the included occupancy-sensing SmartSensor. Shared gripes: a weak built-in speaker, a limited air-quality sensor, and a high price. (3 sourced reviews, 1 lab-tested.)
Praised: Premium redesign — zinc body, glass display, responsive larger touchscreen; Broad smart-home compatibility (Alexa, Siri/HomeKit, Google, SmartThings, IFTTT); App-guided installation is quick and easy.
Flagged: Built-in speaker sounds weak/tinny; Air-quality sensor is limited — no particulate readings, cannot trigger HVAC fan; Expensive / premium price.
GE Cync Smart Thermostat
No sourced tester review yet.