Winner
Data from Amazon and official Ecobee and Honeywell Home sites.
2026 verdict
Ecobee Smart Thermostat Premium beats Honeywell Home X8S Smart Thermostat in 2026, with its clearest edge on price, rating, and warranty. It builds its lead on price, rating, and warranty, then backs it up with a stronger showing on included accessories and connectivity. Honeywell Home X8S Smart Thermostat can still be the right pick, but only if system health monitor outweighs the wider strengths of Ecobee Smart Thermostat Premium. For the average buyer, Ecobee Smart Thermostat Premium is the safer choice.
| Feature | Ecobee Smart Thermostat Premium | Honeywell Home X8S Smart Thermostat | Winner |
|---|---|---|---|
| Price | $149.63 | $259.99 | Ecobee Smart Thermostat Premium |
| Rating | 4.5 | 4.2 | Ecobee Smart Thermostat Premium |
| Warranty | 3 years | 2 years | Ecobee Smart Thermostat Premium |
| Included accessories | Trim Plate, Temperature Sensor | Temperature Sensor | Ecobee Smart Thermostat Premium |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | 2.4 GHz WiFi, 5 GHz WiFi | Ecobee Smart Thermostat Premium |
| Sensors | Proximity / Motion, Occupancy, Temperature, Humidity, TVOC, CO₂ | Proximity / Motion, Occupancy, Temperature, Humidity | Ecobee Smart Thermostat Premium |
| Alerts | Temperature Alerts, Air Quality Alerts, Fire Alerts, Intrude Alerts | Air Quality Alerts | Ecobee Smart Thermostat Premium |
| System Health Monitor | NO | YES | Honeywell Home X8S Smart Thermostat |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, IFTTT, External Temperature Sensors | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter, External Temperature Sensors | Tie |
| Screen | YES | YES | Tie |
| Energy Savings | YES | YES | Tie |
| Voice Control | YES | YES | Tie |
Winner
27% OFF
$149.63
$204.97
- + Price: $149.63
- + Rating: 4.5
- + Warranty: 3 years
- - System Health Monitor: NO vs YES
- + System Health Monitor: YES
- - Price: $259.99 vs $149.63
- - Rating: 4.2 vs 4.5
Frequently Asked Questions
Which is better overall: Ecobee Smart Thermostat Premium or Honeywell Home X8S Smart Thermostat?
Ecobee Smart Thermostat Premium has the stronger overall profile in this comparison, especially for price, rating, and warranty.
What is the biggest difference between Ecobee Smart Thermostat Premium and Honeywell Home X8S Smart Thermostat?
Price is one of the clearest differences: Ecobee Smart Thermostat Premium lists $149.63, while Honeywell Home X8S Smart Thermostat lists $259.99.
Which one looks better on price?
Ecobee Smart Thermostat Premium is listed at $149.63, while Honeywell Home X8S Smart Thermostat is listed at $259.99. Ecobee Smart Thermostat Premium (better spec).
Who should buy Ecobee Smart Thermostat Premium?
Choose Ecobee Smart Thermostat Premium if your priority is price and rating and that matters more than system health monitor.
Who should buy Honeywell Home X8S Smart Thermostat?
Choose Honeywell Home X8S Smart Thermostat if your priority is system health monitor and that matters more than price.
SensiTouch smart thermostat
$149.99- Ecobee
Smart Thermostat Premium
27% OFF$204.97$149.63 
SensiSmart thermostat
32% OFF$129.99$87.79
EcobeeSmart Thermostat Enhanced
$192.50
GoogleNest Learning Thermostat (4th gen)
14% OFF$279.99$239.99
Honeywell HomeRTH9585WF Wi-Fi Smart Color Thermostat
29% OFF$179.99$127.99
Honeywell HomeT9 Smart Thermostat
$214.99
Honeywell HomeT5 Smart Thermostat
28% OFF$109.99$78.96
SensiTouch 2 smart thermostat
10% OFF$189.00$169.99
EcobeeSmart Thermostat Essential
$134.99
Honeywell HomeX2S Smart Thermostat
25% OFF$79.98$59.99
GoogleNest Learning Thermostat
AmazonSmart Thermostat
$140.36
Honeywell HomeX8S Smart Thermostat
$259.99
GoogleNest Thermostat
11% OFF$129.99$115.49
AqaraThermostat Hub W200
$159.99
SensiLite smart thermostat
$62.99
MerossMTS300 Smart Thermostat
5% OFF$62.99$59.84
Air Quality MonitorsEcobeeSmart Thermostat Premium
27% OFF$204.97$149.63
CamerasEcobeeSmartCamera
16% OFF$99.99$84.16
DoorbellsEcobeeSmart Doorbell Camera
31% OFF$159.99$109.95
Door & Window SensorsEcobeeSmartSensor for Doors & Windows
$59.99
Temperature & Humidity SensorsEcobeeSmartSensor
$99.99- ThermostatsEcobee
Smart Thermostat Enhanced
$192.50 - ThermostatsEcobee
Smart Thermostat Essential
$134.99 - ThermostatsEcobee
Smart Thermostat Premium
27% OFF$204.97$149.63
- ThermostatsHoneywell Home
RTH9585WF Wi-Fi Smart Color Thermostat
29% OFF$179.99$127.99 - ThermostatsHoneywell Home
T5 Smart Thermostat
28% OFF$109.99$78.96 - ThermostatsHoneywell Home
T9 Smart Thermostat
$214.99 - ThermostatsHoneywell Home
X2S Smart Thermostat
25% OFF$79.98$59.99 - ThermostatsHoneywell Home
X8S Smart Thermostat
$259.99