Thermostats · Head to head

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat vs Honeywell Home X8S Smart Thermostat

Full Smart Thermostats comparison in 2026

Data from Amazon and official Honeywell Home site.
2026 verdict
Honeywell Home X8S Smart Thermostat wins the 2026 matchup against Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, mainly on warranty, included accessories, and connectivity. The comparison tilts its way because of warranty, included accessories, and connectivity, with integrations and sensors keeping it in front. Choose Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat only if price and rating matter more to you than the broader advantage from Honeywell Home X8S Smart Thermostat. For most setups, Honeywell Home X8S Smart Thermostat is the smarter buy.
vs
FeatureHoneywell Home RTH9585WF Wi-Fi Smart Color ThermostatHoneywell Home X8S Smart ThermostatWinner
Price$127.99$259.99Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Rating4.34.2Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Warranty1 year2 yearsHoneywell Home X8S Smart Thermostat
Included accessoriesNoneTemperature SensorHoneywell Home X8S Smart Thermostat
Connectivity2.4 GHz WiFi2.4 GHz WiFi, 5 GHz WiFiHoneywell Home X8S Smart Thermostat
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter, External Temperature SensorsHoneywell Home X8S Smart Thermostat
SensorsTemperature, HumidityProximity / Motion, Occupancy, Temperature, HumidityHoneywell Home X8S Smart Thermostat
SpeakerNOYESHoneywell Home X8S Smart Thermostat
ScreenYESYESTie
AlertsTemperature AlertsAir Quality AlertsTie
Energy SavingsYESYESTie
System Health MonitorYESYESTie

Frequently Asked Questions

Which is better overall: Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat or Honeywell Home X8S Smart Thermostat?

Honeywell Home X8S Smart Thermostat has the stronger overall profile in this comparison, especially for warranty, included accessories, and connectivity.

What is the biggest difference between Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat and Honeywell Home X8S Smart Thermostat?

Price is one of the clearest differences: Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat lists $127.99, while Honeywell Home X8S Smart Thermostat lists $259.99.

Which one looks better on price?

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat is listed at $127.99, while Honeywell Home X8S Smart Thermostat is listed at $259.99. Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat (better spec).

Who should buy Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat?

Choose Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat if your priority is price and rating and that matters more than warranty.

Who should buy Honeywell Home X8S Smart Thermostat?

Choose Honeywell Home X8S Smart Thermostat if your priority is warranty and included accessories and that matters more than price.

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