Live nowPrime Day 2026October 6 to 7, 2026Starts in10d01h51m15sSee the deals
Thermostats · Head to head

Ecobee Smart Thermostat Essential vs Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat

Full Smart Thermostats comparison in 2026

Updated September 2026
Data from Amazon and official Ecobee and Honeywell Home sites.
2026 verdict
Apple Home users picking between Ecobee and Honeywell should go with the Ecobee Smart Thermostat Essential over the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat.
Ecobee Smart Thermostat Essential
Winner
Ecobee Smart Thermostat Essential
$139.00
Buy on Amazon USACheck price
The Ecobee adds HomeKit support, remote room sensors chosen by presence, a proximity sensor that wakes its 4 inch color touchscreen, Bluetooth and a three year warranty against one. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat counters with a customisable colour touchscreen, monthly energy reports with tips, filter and humidifier pad reminders and a lower price. Both read humidity, send temperature alerts, work with Google Home, Alexa, SmartThings and Home Assistant, and stay on 2.4 GHz Wi-Fi without Matter. Pick the Ecobee Smart Thermostat Essential for HomeKit or uneven rooms, and the Honeywell for a single-zone home that wants maintenance reminders.
vs
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.

Smart home deals and news, straight to your inbox

Price drops, new releases and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Your subscription has been successful.
FeatureEcobee Smart Thermostat EssentialHoneywell Home RTH9585WF Wi-Fi Smart Color ThermostatWinner
Price$139.00$123.49Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Rating4.24.3Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Warranty3 years1 yearEcobee Smart Thermostat Essential
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFiEcobee Smart Thermostat Essential
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature SensorsGoogle Home, Alexa, Samsung SmartThings, Home AssistantEcobee Smart Thermostat Essential
SensorsProximity / Motion, Temperature, HumidityTemperature, HumidityEcobee Smart Thermostat Essential
AlertsTemperature Alerts, Intrude AlertsTemperature AlertsEcobee Smart Thermostat Essential
System Health MonitorNOYESHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat
Voice ControlNOYESHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat
ScreenYESYESTie
Energy SavingsYESYESTie
SpeakerNONOTie

What the differences mean

Apple Home

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

Remote room sensors

The Ecobee can use remote sensors and choose the room by presence, which evens out a house where one room runs cold. The Honeywell does not support room sensors.

Maintenance and energy tips

The Honeywell reminds you to change the filter and humidifier pad and sends monthly energy reports with personalised tips. The Ecobee Smart Thermostat Essential has no system health reminders.

Warranty

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

Screen

Both have color touchscreens that show time and weather. The Honeywell's background colour can be set to match the wall; the Ecobee's 4 inch screen wakes when it senses you approaching.

Which one to buy if

What owners say

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat owners talk first about reliability: many installed it after a Nest failed and report it simply keeps working, even in demanding spaces like workshops. They praise the customisable colour screen with outdoor temperature and humidity, control from the phone, the web portal or the wall, and installs of about five minutes when a C wire is present. The downsides they report are Resideo's cloud, which can take the app down while the schedule keeps running, remote features that are effectively limited to the US, a fixed one-degree temperature swing that can short-cycle some systems, 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.

  • Ecobee Smart Thermostat Essential
  • Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat

Loading price history...

Frequently Asked Questions

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

The Ecobee Smart Thermostat Essential. It adds HomeKit support, remote room sensors, presence detection and a three year warranty. The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat is cheaper and adds maintenance reminders and energy reports.

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

Room sensing and Apple Home. The Ecobee Smart Thermostat Essential supports remote sensors and HomeKit, while the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat supports neither.

Is the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat a good thermostat?

Owners praise the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat for longevity, a customisable colour screen and quick installs with a C wire, while noting Resideo cloud outages, US-only remote features and a one year warranty.

Do they work with Matter?

No. Neither the Ecobee Smart Thermostat Essential nor the Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat supports Matter.

Who should buy the Ecobee Smart Thermostat Essential?

Apple Home households, homes with a cold or hot room, and buyers who want a longer warranty.

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

Single-zone homes on Google Home or Alexa that want a proven thermostat with a customisable screen, energy reports and filter reminders.

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
Open the full comparison
More Thermostats

Top Thermostats to compare next

22 smart thermostats from 9 brands compared: Ecobee, Google Nest, Honeywell Home and more. C-wire needs, room sensors, scheduling and integrations.

All Thermostats
Ecobee

More Ecobee products

A sharper look at other Ecobee products worth comparing.

Explore Ecobee
Honeywell Home

More Honeywell Home products

A sharper look at other Honeywell Home products worth comparing.

Explore Honeywell Home
Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.
© 2026 Smart Home Compared
Search