Winner
Updated September 2026
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 integrations and system health monitor outweigh the wider strengths of Ecobee Smart Thermostat Premium. For the average buyer, Ecobee Smart Thermostat Premium is the safer choice.
Price alerts
Thermostat prices change while you decide
We check the price of every Thermostat in the catalog daily and email you the drops, whichever one you pick.
No spam. Unsubscribe in one click.
| Feature | Ecobee Smart Thermostat Premium | Honeywell Home X8S Smart Thermostat | Winner |
|---|---|---|---|
| Price | $149.63 | $259.99 | Ecobee Smart Thermostat Premium |
| Rating | 4.5 | 4.1 | 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 |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter, External Temperature Sensors | Honeywell Home X8S Smart Thermostat |
| 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 |
| 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
- - Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter, External Temperature Sensors
- - System Health Monitor: NO vs YES
$259.99
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter, External Temperature Sensors
- + System Health Monitor: YES
- - Price: $259.99 vs $149.63
- - Rating: 4.1 vs 4.5
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Ecobee Smart Thermostat Premium
- Honeywell Home X8S Smart Thermostat
Loading price history...
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 integrations.
Who should buy Honeywell Home X8S Smart Thermostat?
Choose Honeywell Home X8S Smart Thermostat if your priority is integrations and system health monitor and that matters more than price.
Full comparison table
Compare all 22 Thermostats side by side
You are looking at two of them. The full table lines up all Thermostats in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 22 Thermostats
- 51 specs compared
- 47 filters
CieloBreez Max
$114.35
SensiTouch smart thermostat
11% OFF$179.99$159.99- Ecobee
Smart Thermostat Premium
27% OFF$204.97$149.63 
SensiSmart thermostat
38% OFF$129.99$79.99
EcobeeSmart Thermostat Enhanced
10% OFF$199.99$179.99
GoogleNest Learning Thermostat (4th gen)
14% OFF$279.99$239.99
CieloBreez Eco
$79.00
Honeywell HomeRTH9585WF Wi-Fi Smart Color Thermostat
31% OFF$179.99$123.49
Honeywell HomeT9 Smart Thermostat
$209.99
Honeywell HomeT5 Smart Thermostat
30% OFF$109.99$77.25
SensiTouch 2 smart thermostat
$189.52
AmazonSmart Thermostat
21% OFF$119.98$94.23
Honeywell HomeX7S Smart Thermostat
7% OFF$199.99$185.00
EcobeeSmart Thermostat Essential
$139.00
Honeywell HomeX2S Smart Thermostat
26% OFF$84.99$62.99
GoogleNest Learning Thermostat
AqaraThermostat Hub W200
$159.99
GoogleNest Thermostat
10% OFF$129.99$117.45
Honeywell HomeX8S Smart Thermostat
$259.99
SensiLite smart thermostat
$64.00
Air Quality MonitorsEcobeeSmart Thermostat Premium
4.5(856)27% OFF$204.97$149.63
CamerasEcobeeSmartCamera
4.0(1,324)9% OFF$99.99$90.67
DoorbellsEcobeeSmart Doorbell Camera
4.1(1,066)31% OFF$159.99$109.99
Door & Window SensorsEcobeeSmartSensor for Doors & Windows
4.2(1,282)$57.99
Temperature & Humidity SensorsEcobeeSmartSensor
4.6(8,747)$99.49- ThermostatsEcobee
Smart Thermostat Enhanced
4.4(3,704)10% OFF$199.99$179.99 - ThermostatsEcobee
Smart Thermostat Essential
4.2(1,886)$139.00 - ThermostatsEcobee
Smart Thermostat Premium
4.5(856)27% OFF$204.97$149.63
- ThermostatsHoneywell Home
RTH9585WF Wi-Fi Smart Color Thermostat
4.3(20,087)31% OFF$179.99$123.49 - ThermostatsHoneywell Home
T5 Smart Thermostat
4.3(1,504)30% OFF$109.99$77.25 - ThermostatsHoneywell Home
T9 Smart Thermostat
4.3(2,976)$209.99 - ThermostatsHoneywell Home
X2S Smart Thermostat
4.2(413)26% OFF$84.99$62.99 - ThermostatsHoneywell Home
X7S Smart Thermostat
4.3(82)7% OFF$199.99$185.00 - ThermostatsHoneywell Home
X8S Smart Thermostat
4.1(150)$259.99 
Water Leak SensorsHoneywell HomeL1 WiFi Water Leak and Freeze Detector
3.7(66)8% OFF$67.64$62.23