Honeywell RTH8580WF Smart Thermostat Review

I am a busy person. I have multiple tasks to achieve by the end of the day and sometimes, I forget to wash the day’s dishes or clean up my room. While there is no way I can automate these chores, I can, however, automate the processes of my electrical appliance.

This is exactly why I switched from my manual thermostat to a smart thermostat that does everything without me lurking in front of it! A smart thermostat lets you supervise the temperature and humidity of your house even if you are in your office.

Gone are the days when I entered my freezing apartment after a tedious day and cursed myself because I forgot to adjust the temperature before I left for work. Now, I just have to open my phone and turn the HVAC system on while I am on my way home.

Like you might have already guessed by the title of this article, the thermostat I chose was the mighty Honeywell RTH8580WF Smart Thermostat. If you want to know my experience with this device, continue reading!

Things to Consider Before Buying a Smart Thermostat

Before we jump into the technicalities of the star of the show, let’s talk about the different characteristics that I think are necessary to check out before purchasing a smart thermostat.

1. Compatibility

One of the most chief characteristics is to check the compatibility of the thermostat with your HVAC system or heat pumps. While searching, you will notice that some units also work with units that have a c-wire, while others give you small kits that can help you install one if your system doesn’t have it.

Furthermore, some devices work with only central heating systems while others might work with advanced systems like a furnace, heat pump, and a furnace.  

2. Design

Evaluate the design of the thermostat. Check if the data on the screen can be read easily. Check the touchpad or the buttons that the device has and check how quick they respond to your touch.

3. Mobile Access

Like I shared, one of the prime reasons why I switched to a smart thermostat was because I can remotely manage and monitor my HVAC system. While selecting a thermostat, always check if the mobile application is compatible with the smartphone/tablet/laptop model that you have.

Most mobile applications are available on android and apple store. However, there are only a few devices that are compatible with Windows devices.

Honeywell RTH8580WF Smart Thermostat

Honeywell’s RTH8580WF model is a smart thermostat that gives you remote access to the entire catalog of features that it possesses. You can use your smartphone, tablet, laptop, or desktop computer to control the device from wherever you are in the world.

All you have to do is download the official application of the unit. However, the app is compatible only with Android and Apple gadgets.

It has a visible screen that displays the data in easy-to-read and large digits and alphabets. I really liked that this thermostat allowed me to set a schedule for an entire week with 4 program periods in a day! This helped me tick one of the thousand things off my To-Do list.

Who is it for?

As long as your HVAC system or heating pump has a c-wire, Honeywell RTH8580WF Smart Thermostat will work with any type of system that you have at home or office. However, this unit is not suitable for you if you have a heat pump that has an electric baseboard heat (120-240 volts).

Furthermore, if you are looking for a smart thermostat that can easily be managed by using your Android or Apple devices then you will come to love this appliance.

If you are skeptical about whether your current HVAC system or heating pump will work with this thermostat, then you should visit the official Honeywell website. It contains a chart that lets you know about the compatibility. If it is still unclear, just take a picture of the wiring of your current thermostat and send it to them!


  • Very responsive to commands sent via the mobile application/ web page.
  • Programming the schedule is intuitive and easy.
  • Accurately displays the indoor and outdoor temperature and humidity levels.
  • Has filter count that helps to remind when to change the filter.
  • Automatically updates the software.


  • You can’t user-set the time on the unit.
  • The Wi-Fi set-up is tricky and if not done correctly, the unit will disconnect from the Wi-Fi itself occasionally.
  • Not compatible with heat pumps that have electric baseboard heat (120-240 volts).

Features & Benefits

In this section, we will discuss the many different benefits that this small thermostat gives you!

1. Simple Setup

One of the things that I liked the most about this small unit was how easy the installation process was. Besides, I appreciated the fact that the user’s manual was extremely comprehensive and had written each and every step that you need to take to connect this gadget to the wiring.

Connecting with Wi-Fi is also easy. However, it might be complicated for some people. So, I will recommend you all to thoroughly read the instructions.

2. User-friendly Interface

The design and the display of this unit are very convenient. Everything is displayed on the screen in big, bold digits so that anyone can read them no matter the lighting conditions. Furthermore, I was impressed by how responsive the touch screen was! It is definitely one of the best I have seen so far in thermostats!

3. Remote Accessibility

Though a few people complained that their thermostat frequently got disconnected from Wi-FI on its own, I did not face this issue. Mine worked almost perfectly!

The Mobile application has a simple interface as well which makes it easier to control the unit even if you are hundreds of kilometers away from the thermostat. I also noticed that the thermostat responded almost instantly to all of the commands I gave via remote accessibility!

The mobile application lets you monitor and manage all of the functions of the thermostat. Furthermore, the app also gives you temperature alerts as well as reminders for a filter change.

4. Software Updates

Another notable feature of the Honeywell RTH8580WF Smart Thermostat is its ability to automatically update the software without disturbing you! This feature, in my opinion, comes in handy as it takes an additional task off your to-do list. All you have to do is sit back and relax!

5. Universal Compatibility

One of the reasons why I purchased this thermostat was its versatile compatibility. The unit can connect to almost any type of HVAC system and heat pumps. The only condition is that it has a c-wire. Though, it does have a few shortcomings which were mentioned in the above section.

If we talk about the compatibility with the mobile application, then the unit can connect to all models of Android and Apple smartphones, tablets, and computers instantly.

6. Scheduling

The device allows you to set 4 programs per day for an entire week! This is very convenient and makes operating this unit as easy as a piece of cake. Whether you are home or not, the thermostat will strictly follow the schedule.

Moreover, scheduling also helps to save energy which further helps to keep your electricity bills low, and who doesn’t like that?

7. Accuracy and Precision

The electrical device displays the temperature with a precision of ±1 degrees Fahrenheit. Moreover, it lets you manage different thermostats at different locations effortlessly.

The mobile application also lets you access the local weather forecast so that you can adjust the temperature accordingly.

What do users say about Honeywell RTH8580WF Smart Thermostat?

If you are just like me and read hundreds of reviews to evaluate the reliability and durability of a product, then you might find this section useful.

While I was thinking of buying Honeywell RTH8580WF Smart Thermostat, I researched and read numerous reviews on Amazon and different articles to judge if this product was worth buying. I also watched a couple of YouTube videos for a better understanding of the unit.

The following paragraphs are a summary of all the different reviews that helped me reach my final decision.

Obeying Commands

Most of the people praised that the unit was exceptional when it came to obeying different commands that you insert, irrespective of the fact whether you were accessing it locally or remotely. It responds within seconds and makes the required changes just as fast.


Another feature that many people like was programming the schedule. Many claimed that it was very intuitive as well as flexible.


When it comes to the installation and setup, there were mixed reviews. While some people appreciated how simple and easy the installation process was, others complained about it. However, if there was one common fact that both types of reviewers agree upon, it was the importance of reading the instructions manual in detail before continuing.

Wi-Fi Connectivity

Another feature that had mixed reviews was Wi-Fi connectivity. The positive reviews admired that the Wi-Fi made it easy to adjust the temperature throughout the day no matter where you were. On the other hand, the negative reviews were disappointed how the unit got disconnected from the Wi-Fi recurrently.


A common disadvantage that almost everyone was bummed about was that the device uses ‘internet time’ and most of the time, it is incorrect. Moreover, there isn’t any option to set the time yourself.

Overall, most of the reviews were positive and appreciate that the thermostat did exactly what it was supposed to with accuracy, refinement, and finesse. Though it has a few flaws, its strengths overweigh them.


In this section, I will let you know about the three leading rivals of Honeywell RTH8580WF Smart Thermostat and what they have to offer.

  • Emerson Sensi ST75W Smart Thermostat
  • ecobee3 Lite 2nd Gen Smart Thermostat
  • Lux Products TX9600TS Programmable Thermostat

Emerson Sensi ST75W Smart Thermostat

If you are someone who has cost-efficiency and energy-saving in their priorities while looking for a smart thermostat then you will like Emerson Sensi ST75W Smart Thermostat.

It can save as much as 23% of your HVAC energy and gives you abundant features like remote accessibility, geo-fencing, and flexible scheduling which makes it one of the top competitors of Honeywell.

It possesses integrated illuminated terminals that help to make the installation process fast and trouble-free. If we talk about compatibility, it can work with every HVAC system that has a c-wire.

It can work with virtual assistants like Amazon Alexa, Apple HomeKit, Samsung SmartThings, and Google Assistant!

If you want to know more about Emerson Sensi ST75W Smart Thermostat, click here!

ecobee3 Lite 2nd Gen Smart Thermostat

With its smart sensors, ecobee3 Lite 2nd Gen Smart Thermostat can detect occupancy and function accordingly. This helps it to reduce your electricity bill by as much as 23%. Also, keep the optimal temperature in each room of your house.

It offers you remote access via its mobile application that you can download on both Apple and Android phones. Also, you can command different functions to the unit using Echo, Apple Homekit, Samsung SmartThings, Wink, Google Assistant, and IFTT.

Last but not the least; the thermostat can install in less than 30 minutes. Just follow the video walkthroughs and the user guide and you will be fine!

Click here if you are curious about ecobee3 Lite 2nd Gen Smart Thermostat!

Lux Products TX9600TS Programmable Thermostat

With its wide-range compatibility and user-friendly interface, the Lux Products TX9600TS Programmable Thermostat is a small, sleek and consistent unit with excellent performance.

It also possesses a large and responsive touchscreen with data displayed in large and visible letters and digits. The interface is quite simple and most users didn’t have any trouble navigating through the menu.

The unit also features a customized schedule that lets you set 2 or 4 periods per day. Another impressive feature is its ‘touchpad lockout’ which ensures that only authorized users have control over the device.

Click here for a detailed review of Lux Products TX9600TS Programmable Thermostat!

Final Thoughts on the Honeywell RTH8580WF Smart Thermostat

Finding the right product can literally change your life and how you go about your entire day. And this product did just that.

Honeywell RTH8580WF Smart Thermostat is one of the most ideal thermostats that I have ever come across. Luckily, for me, it did everything that I wanted it to do and even more. Some of my most favorite features are flexible scheduling, a user-friendly interface, and its simplicity.

When you order this thermostat, it comes with all the accessories that you might need to install it; wallplate, screws, anchors, coin cell battery, thermostat ID card, Wire Labels, and a Quickstart and user manual.

The thermostat is an ideal device that lets you remotely control the comfort of your house from anywhere and at any time.

Click here and buy Honeywell RTH8580WF Smart Thermostat right now!