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Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat Review

The Honeywell Home RTH9585WF1004 is a Wi-Fi smart thermostat designed for home heating and cooling control, with touchscreen access, app control, and voice assistant support. It stands out for flexible scheduling, comfort features, and a compact design, but installation and compatibility checks are important before buying.
Expert reviewed
79
Overall score
Data-driven scoring Expert reviewed Updated analysis

Why we ranked it highly

The Honeywell Home RTH9585WF1004 is a wall-mounted smart thermostat built for connected home climate control. It combines a customizable color touchscreen with Wi-Fi access, 7-day programming, voice control compatibility, and app-based remote management. The product is aimed at households that want more control over heating and cooling schedules without relying only on the thermostat itself. Its feature set focuses on everyday comfort and convenience, including auto changeover between heating and cooling, vacation and temporary hold settings, maintenance reminders, and monthly energy reports. It is also positioned for homes already using Alexa or Google Home. The main caveat is that compatibility matters: it requires a C-wire and does not support electric baseboard heat at 120-240V. Review feedback suggests strong usability overall, but setup friction and mixed reliability comments keep it from being a fully hassle-free option.
90-day review Expert reviewed User feedback Data scoring

Key specs

Features & Specs

Controller Type
Touch Screen, Voice
Additional Features
Customizable color touchscreen, Smart Response Technology, Energy Star certified
Specific Uses For Product
Furnace
Temperature Control Type
Heating and Cooling
Connectivity Technology
Wi-Fi
Power Source
AC Power Supply
Voltage
120 Volts
Display Type
LED
Control Type
Touchpad Control
Control Method
Voice
Connectivity Protocol
Wi-Fi
Mounting Type
Wall Mount
Backlight
No
Number of Batteries
1 AAA batteries required.
Smart Home Compatibility
Smart Home Compatible

Style

Color
Gray
Shape
Rectangular
Product Style
D. Grey - Wi-Fi Thermostat

User guide

Specification Met
Energy Star

Item details

Brand Name
Honeywell Home
Model Name
RTH9585WF1004
Included Components
Mounting Hardware, Thermostat, Thermostat ID Card, User Manual, Wire Labels
Model Number
RTH9585WF1004/W
UPC
085267911313
Global Trade Identification Number
00085267911313
Manufacturer
Honeywell Home
Manufacturer Part Number
RTH9585WF1004
Item Type Name
Honeywell Home Wi-Fi Smart Color Programmable Thermostat, Alexa Enabled, (RTH9585WF1004)
Unit Count
1.0 Count

Measurements

Item Dimensions D x W x H
0.88"D x 4.5"W x 3.5"H
Item Weight
0.45 Pounds

Materials & Care

Material Type
Plastic
Finish Types
Standard D. Grey

Scores breakdown

78 /100

Performance

86 /100

Features

79 /100

Safety

87 /100

Comfort

84 /100

Ease of use

90 /100

Space efficiency

95 /100

Noise

82 /100

Design

Strengths

  • Easy-to-read color touchscreen with flexible 7-day scheduling.
  • Works with Wi-Fi remote control, app access, Alexa and Google Home.
  • Strong comfort features including auto heat/cool changeover and vacation or temporary hold modes.
  • Helpful maintenance reminders for air filters and humidifier pads.
  • Compact wall-mounted design that uses very little space.
  • High review volume with generally positive feedback on usability and connectivity.

Limitations

  • Requires a C-wire, which can limit compatibility in some homes.
  • Does not work with electric baseboard heat systems rated at 120-240V.
  • Installation can be fiddly, especially the wire terminals and wiring identification.
  • Reliability feedback is mixed, with some users reporting that it does not function properly.
  • App and remote features may have regional limitations outside the US.
  • Some buyers question the value at full price.
  • Temperature control expectations may be affected by the reported 3-degree heat/cool separation behaviour.

Ideal user profiles

  • Homeowners upgrading from a basic programmable thermostat to Wi-Fi control.
  • Users who want Alexa or Google Home voice control for heating and cooling.
  • Households with compatible forced-air, hot water, steam, or supported heat pump systems.
  • People who want remote temperature changes, scheduling, and maintenance reminders.

Use cases

  • Managing home temperature remotely while away from the house.
  • Setting a weekly heating and cooling schedule around work and sleep routines.
  • Using voice commands to adjust temperature through Alexa or Google Home.
  • Switching automatically between heating and cooling in variable weather.
  • Tracking energy use through monthly reports and adjusting habits over time.
  • Receiving reminders to change filters or humidifier pads.

Fit and positioning

Who this works for

Category positioning

This product sits in the smart home and climate control category rather than being a general home gadget. Its role is to manage heating and cooling more flexibly through scheduling, remote access, and voice control. In a typical household routine, it is most useful for adjusting temperatures around work hours, sleep schedules, travel, and changing weather, while also giving users more visibility into energy use and HVAC maintenance needs.

Best for

This thermostat is best suited to homeowners who already have a compatible HVAC setup and want a practical upgrade from a basic programmable model. It fits users who value app control, Alexa or Google Home integration, flexible scheduling, and clear on-screen controls. It also makes sense for households that want reminders for filter changes and a more connected approach to day-to-day comfort management.

Not best for

It may be a poor fit for buyers with incompatible systems, especially homes without a C-wire or with electric baseboard heat. It is also less suitable for anyone who wants the simplest possible installation, since reviews mention delicate wire connectors and setup friction. Buyers outside supported regions should also be cautious, as some reviews describe remote app limitations.

Home use

In everyday home use, this thermostat is built to simplify routine temperature control. It can be adjusted at the wall, from a phone or tablet, or by voice through compatible smart home platforms. Features such as temporary hold, vacation hold, maintenance reminders, and weather display support a more connected household routine rather than just basic heating and cooling control.

Performance analysis

How it performs in practice

Each scoring dimension is separated into a compact card so the strengths and tradeoffs are easier to compare without reading one long block.

Performance analysis

The thermostat appears to perform well at its main job: managing household heating and cooling with more flexibility than a basic programmable model. Reviews often praise accurate temperature control, straightforward scheduling, and convenient remote adjustments. Auto changeover between heating and cooling is also useful in mixed-weather periods. That said, performance is not entirely without caveats. Some customers mention temperature-control limitations, including a reported gap required between heat and cool settings, and reliability comments suggest that operation is not consistently trouble-free for every installation.

Feature analysis

The feature set is one of this model’s stronger areas. It includes 7-day programming, remote app control, Alexa and Google Home compatibility, a customizable color touchscreen, weather display, maintenance reminders, fan control modes, energy reports, and vacation or temporary hold options. These features are practical rather than decorative, although the customizable screen color may matter less to buyers who care more about climate control than appearance.

Safety

Safety considerations here are mostly tied to correct system compatibility and installation. The thermostat uses AC power and requires proper wiring, so buyers need to confirm HVAC compatibility and the presence of a C-wire before installation. The product details clearly state that it does not support certain electric baseboard systems, which is an important limitation to respect. No major safety fault pattern is clear from the provided reviews, but careful installation matters to avoid wiring mistakes and setup problems.

Comfort

Comfort is one of the product’s stronger areas. Flexible programming, remote access, auto heat/cool switching, and hold modes make it easier to keep the home aligned with changing schedules and weather. Instead of relying on manual adjustments throughout the day, users can set routines that better match sleeping, working, and away-from-home periods. That makes it a practical comfort upgrade for connected households.

How it compares

Within the smart thermostat category, this model appears stronger on usability and feature breadth than on installation simplicity or long-term consistency. It stands out for its touchscreen interface, flexible programming, smart assistant support, maintenance reminders, and compact design. Compared with many thermostats in the same broad segment, it looks especially appealing for households that want connected comfort tools without moving to a much higher price tier. Where it appears less competitive is in setup friction and reliability confidence, since reviews show a wider range of experiences than the most seamless and dependable options in the category.

Ranking summary

This thermostat ranks as a strong upper-mid option in the smart thermostat category because it combines broad smart home support, very good comfort tools, and easy everyday operation. Its scheduling flexibility, remote access, voice compatibility, and compact touchscreen design make it a practical upgrade over basic programmable models. It does not rank at the very top because ownership friction is more noticeable than the strongest alternatives. Installation can be awkward, compatibility needs careful checking, and review sentiment on reliability and value is less consistent than the best-performing devices in the category. For compatible homes, though, it remains a well-rounded and appealing choice.

Buying advice

Consider this model if you want a Wi-Fi thermostat with voice control, flexible scheduling, and remote access, and if your home has a compatible HVAC system with a C-wire. It is especially suitable for households upgrading from a basic programmable thermostat and wanting more control over comfort and energy routines. Avoid it if you need guaranteed compatibility with electric baseboard heat, want the quickest possible installation, or live in a region where app features may be limited. Before buying, check wiring, HVAC compatibility, supported smart home platforms, and whether local rebates or utility programs affect the overall value.
79
Overall score

Final verdict

The Honeywell Home RTH9585WF1004 is a strong smart thermostat option for compatible homes that want practical connected climate control. Its main strength is the combination of easy day-to-day use, flexible scheduling, app access, and Alexa or Google Home support. Its main limitation is that installation and ownership are not entirely friction-free, with a C-wire requirement, some compatibility gaps, and mixed reliability feedback. If your system matches the requirements and you want a feature-rich thermostat without stepping into the highest price tier, it is a sensible choice. If setup simplicity is your top priority, it may be less convincing.
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Key topics

Honeywell Home RTH9585WF1004 review, Honeywell smart thermostat review, Wi-Fi smart thermostat, programmable thermostat with Alexa, smart home thermostat, Energy Star thermostat, touchscreen thermostat, thermostat with app control, home climate control thermostat, Honeywell Wi-Fi thermostat

Frequently asked questions

Is the Honeywell Home RTH9585WF1004 good for smart home temperature control?
It appears to be a strong fit for smart home climate control if your system is compatible. The thermostat supports Wi-Fi remote access, Alexa, Google Home, flexible scheduling, and automatic heat/cool changeover. Reviews are generally positive on everyday control, though installation and long-term reliability feedback are more mixed.
Is the Honeywell Home RTH9585WF1004 easy to use?
For day-to-day use, it looks user-friendly. Buyers often praise the bright touchscreen, phone control, and intuitive app. The main learning curve tends to be during initial setup, where wiring, Wi-Fi connection, and deeper configuration options can take more time than the actual daily operation.
Does the Honeywell Home RTH9585WF1004 need a C-wire?
Yes. The provided product details state that a C-wire is required. That makes it important to check your current thermostat wiring before buying. If your home does not have the necessary wiring, installation may be more difficult or may require an adapter approach depending on your system.
What systems is the Honeywell Home RTH9585WF1004 compatible with?
According to the listed details, it is compatible with forced air systems using gas, oil or electric, as well as hot water, steam, and heat pumps with electric backup. It does not work with electric baseboard heat systems rated at 120-240V, so compatibility should be checked carefully first.
How good is the app and remote control experience?
The app experience appears generally solid, with many customers saying phone control and Wi-Fi access work well. The thermostat also supports browser access and voice assistant control. However, some reviews mention setup friction, limited control for certain functions, and regional issues affecting app use outside the US.
Can the Honeywell Home RTH9585WF1004 help with energy management?
It includes Energy Star certification, monthly energy reports, scheduling options, and support for some utility demand response programs where available. Those tools can help households manage heating and cooling routines more deliberately, but actual savings will depend on system compatibility, local programs, and how consistently schedules are used.
What are the main drawbacks of the Honeywell Home RTH9585WF1004?
The main concerns are installation complexity, C-wire requirements, and mixed reliability feedback. Some users also report value concerns, app limitations for certain functions, and restrictions for remote features in some countries. It is also not suitable for every heating system, especially unsupported electric baseboard setups.
Is the Honeywell Home RTH9585WF1004 suitable for small spaces?
Physically, yes. It has a compact wall-mounted design with a small footprint, so it should suit flats, hallways, and smaller utility areas without taking up much room. The more important question is HVAC compatibility rather than physical size, since the thermostat itself is easy to place once wiring is available.

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