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Thermostats · Head to head

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat vs Sensi Smart thermostat

Full Smart Thermostats comparison in 2026

Updated September 2026
Data from Amazon and official Honeywell Home and Sensi sites.
2026 verdict
If Apple Home is in the mix, or you simply want the longer warranty, the Sensi Smart thermostat is the better pick than the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat.
Sensi Smart thermostat
Winner
Sensi Smart thermostat
$79.99$129.9938% OFF
Buy on Amazon USACheck price
It adds Apple HomeKit to the Google Home, Alexa, SmartThings and Home Assistant support both share, carries a three year warranty against one, and is the more affordable of the two. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat is the richer wall unit, with a customisable full-colour touchscreen, extreme temperature alerts, filter and humidifier pad reminders and monthly energy reports, where the Sensi uses a wide 5 inch monochrome display with physical controls. Both read humidity, use 2.4 GHz Wi-Fi and skip Matter and room sensors. Choose the Sensi Smart thermostat for HomeKit and value, and the Honeywell for a colour touchscreen and maintenance alerts.
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FeatureHoneywell Home RTH9585WF Wi-Fi Smart Color ThermostatSensi Smart thermostatWinner
Price$123.49$79.99Sensi Smart thermostat
Rating4.34.4Sensi Smart thermostat
Warranty1 year3 yearsSensi Smart thermostat
Included accessoriesNoneTrim PlateSensi Smart thermostat
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home AssistantSensi Smart thermostat
AlertsTemperature AlertsNoneHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat
System Health MonitorYESNOHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
ScreenYESYESTie
SensorsTemperature, HumidityTemperature, HumidityTie
Energy SavingsYESYESTie
Voice ControlYESYESTie

What the differences mean

Apple Home

The Sensi Smart thermostat works with Apple HomeKit; the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat does not. Both cover Google Home, Alexa, SmartThings and Home Assistant.

Screen

The Honeywell has a full-colour touchscreen with a customisable background and outdoor readings. The Sensi Smart thermostat has a wider 5 inch monochrome display with physical controls, easy to read but plainer.

Alerts and maintenance

The Honeywell warns about extreme temperatures and reminds you about the filter and humidifier pad. The Sensi Smart thermostat has no alerts or maintenance reminders.

Warranty

Three years on the Sensi Smart thermostat against one year on the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat.

Which one to buy if

What owners say

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat owners describe it as the thermostat that lasts, often installed after a Nest failed within a year or two and still running in demanding spaces like workshops. They single out the customisable colour screen with outdoor temperature and humidity, and being able to control it from the phone, the web portal or the wall. Their complaints are Resideo's cloud, which can take the app offline while the schedule keeps running, remote features that are effectively limited to the US, a fixed one-degree temperature differential that can short-cycle some systems, the need for a C wire and a one year warranty.

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.

  • Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
  • Sensi Smart thermostat

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Frequently Asked Questions

Sensi vs Honeywell: which is better, the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat or the Sensi Smart thermostat?

The Sensi Smart thermostat, for its Apple HomeKit support, three year warranty and lower price. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat is better equipped on the wall, with a colour touchscreen, temperature alerts and maintenance reminders.

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

The screen and what it tells you. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat has a customisable colour touchscreen with alerts and filter reminders, while the Sensi Smart thermostat has a monochrome display and no alerts.

Do they work with Apple Home?

Only the Sensi Smart thermostat works with Apple HomeKit. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat supports Google Home, Alexa, SmartThings and Home Assistant but not HomeKit, and neither supports Matter.

Can either use remote room sensors?

No. Neither the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat nor the Sensi Smart thermostat supports external temperature sensors.

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

Google Home or Alexa households that want a big colour touchscreen, temperature alerts and filter reminders.

Who should buy the Sensi Smart thermostat?

Apple Home users and anyone who wants broad platform support, humidity readings and a three year warranty from a simple thermostat.

Full comparison table

Compare all 22 Thermostats side by side

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