Thermostats · Head to head

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat vs Honeywell Home T5 Smart Thermostat

Full Smart Thermostats comparison in 2026

Updated November 2026
Data from the official Honeywell Home site.
2026 verdict
Two Honeywell thermostats, one meaningful gap: the Honeywell Home T5 Smart Thermostat edges out the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat mainly on warranty length, since the rest of this smart thermostat matchup is close to a wash. The Honeywell Home T5 Smart Thermostat carries a longer two year warranty than the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat's one year coverage, its only real advantage on the spec sheet. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat answers with a humidity sensor the Honeywell Home T5 Smart Thermostat does not have, since the T5 measures temperature only. Everything else lines up closely: both connect over 2.4GHz Wi-Fi only, work with Google Home, Alexa and Apple HomeKit, include a system health monitor and temperature alerts, and support voice control, though the Honeywell Home T5 Smart Thermostat swaps a color touchscreen for a larger 4.95 inch black and white display. Pick the Honeywell Home T5 Smart Thermostat for the longer warranty and bigger screen, and pick the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat if you want humidity readings and a color display instead.
Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
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Connectivity
  • Wi-Fi 2.4 GHz
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FeatureHoneywell Home RTH9585WF Wi-Fi Smart Color ThermostatHoneywell Home T5 Smart ThermostatWinner
Rating4.34.2Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Warranty1 year2 yearsHoneywell Home T5 Smart Thermostat
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home AssistantHoneywell Home T5 Smart Thermostat
SensorsTemperature, HumidityTemperatureHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Local ControlNOYESHoneywell Home T5 Smart Thermostat
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
ScreenYESYESTie
AlertsTemperature AlertsTemperature AlertsTie
Energy SavingsYESYESTie
System Health MonitorYESYESTie
Voice ControlYESYESTie
SpeakerNONOTie

Frequently Asked Questions

Which is better overall: Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat or Honeywell Home T5 Smart Thermostat?

The Honeywell Home T5 Smart Thermostat comes out slightly ahead, mainly on a longer two year warranty. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat wins back some ground with humidity sensing, since the two models are otherwise very close.

What is the biggest difference between the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat and the Honeywell Home T5 Smart Thermostat?

Sensors and display style. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat measures humidity in addition to temperature and uses a color touchscreen, while the Honeywell Home T5 Smart Thermostat measures temperature only but uses a larger 4.95 inch black and white touchscreen.

Which one measures humidity?

Only the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat measures humidity. The Honeywell Home T5 Smart Thermostat measures temperature only.

Do both work with Apple HomeKit?

Yes. Both the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat and the Honeywell Home T5 Smart Thermostat work with Google Home, Alexa and Apple HomeKit.

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

Buyers who want humidity sensing alongside temperature and prefer a color touchscreen over a larger black and white display.

Who should buy the Honeywell Home T5 Smart Thermostat?

Buyers who want the longer two year warranty and a larger 4.95 inch touchscreen, and do not need humidity sensing.

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