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- Pack of 2$359.98$179.99 per unitBuy
Updated November 2026
Data from the official Honeywell Home and Sensi sites.
2026 verdict
On price, owner rating and warranty the Sensi Smart thermostat comes out ahead of the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, even though the Honeywell does more on the wall.
The Sensi carries a three year warranty against one, is the more affordable of the pair and adds automatic scheduling to its manual schedules, with the same Google Home, Alexa, SmartThings and Home Assistant support. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat is the richer 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 Apple HomeKit, Matter and room sensors. Choose the Sensi Smart thermostat for warranty and value, and the Honeywell for a colour touchscreen and maintenance alerts.
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
31% OFF
$89.99
$129.99
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat | Sensi Smart thermostat | Winner |
|---|---|---|---|
| Rating | 4.3 | 4.4 | Sensi Smart thermostat |
| Warranty | 1 year | 3 years | Sensi Smart thermostat |
| Alerts | Temperature Alerts | None | Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat |
| System Health Monitor | YES | NO | Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Google Home, Alexa, Samsung SmartThings, Home Assistant | Tie |
| Screen | YES | YES | Tie |
| Sensors | Temperature, Humidity | Temperature, Humidity | Tie |
| Energy Savings | YES | YES | Tie |
| Voice Control | YES | YES | Tie |
| Speaker | NO | NO | Tie |
| Local Control | NO | NO | Tie |
What the differences mean
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.
Trim plate
The Sensi Smart thermostat offers a trim plate as an extra-cost accessory; the Honeywell ships none.
Which one to buy if
- you want the thermostat to warn about a freezing house
The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat sends extreme temperature alerts.
- you want reminders to change the filter
Only the Honeywell tracks filter and humidifier pad maintenance.
- a long warranty matters more than extras
The Sensi Smart thermostat is covered for three years, the Honeywell for one.
- you would rather press buttons than tap a screen
The Sensi Smart thermostat uses physical controls and a wide monochrome display.
- + Alerts: Temperature Alerts
- + System Health Monitor: YES
- - Rating: 4.3 vs 4.4
- - Warranty: 1 year vs 3 years
Winner
31% OFF
$89.99
$129.99
- + Rating: 4.4
- + Warranty: 3 years
- - Alerts: None vs Temperature Alerts
- - System Health Monitor: NO vs YES
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, and a one year warranty. Sensi Smart thermostat owners describe a guided self-install, physical buttons, easy schedules and fan circulation settings, but note the app's US and Canadian address requirement and occasional Wi-Fi drops.
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 three year warranty, lower price and better owner rating. 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 the Sensi Smart thermostat and the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat work with Apple Home?
No. Neither the Sensi Smart thermostat nor the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat works with Apple HomeKit. Both support Google Home, Alexa, SmartThings and Home Assistant, and neither supports Matter.
Can the Sensi Smart thermostat or the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat 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?
Anyone who wants Google Home, Alexa, SmartThings and Home Assistant support, humidity readings and a three year warranty from a simple thermostat.
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