Honeywell Home X2S Review: A Deliberately Simple Matter Thermostat
Push-button controls, dual-band WiFi and Matter certification, aimed at people who found learning thermostats overcomplicated.
The Honeywell Home X2S is the entry point of Resideo's smart thermostat range and it leans into being straightforward: a large readable display, physical buttons instead of a touchscreen, and flexible 7-day, 5-1-1, 5-2 or 1-week programming that you can also just switch off. It is Matter certified, so it works with Apple Home, Amazon Alexa, Google Assistant and other Matter platforms alongside the First Alert app, and unusually for a budget thermostat it takes both 2.4 and 5 GHz WiFi. Owners describe it as the easiest smart thermostat they have installed, with the main complaints being WiFi stability for a minority and confusion over which app to download.
- Budget buyers
- Older users wanting simple controls
- Matter and Apple Home households
- Rental property owners
Pros
- Matter certified, works with Apple Home, Alexa, Google Assistant and SmartThings
- Supports both 2.4 and 5 GHz WiFi, unusual at this price
- Very simple push-button interface with a large readable display
- Flexible 7-day, 5-1-1, 5-2 or 1-week programming, or scheduling off
- Auto-away, humidity display and filter change reminders
- ENERGY STAR certified and demand-response capable
- Two-year warranty and UWP wall plate included
Cons
- Controlled through the First Alert app, which confuses buyers looking for a Honeywell app
- A minority report the thermostat dropping off WiFi repeatedly
- No touchscreen, colour display or weather information
- No room sensors or occupancy detection
- C wire required
- App availability is limited outside North America
Who is the Honeywell Home X2S for?
It is for people who want WiFi scheduling and remote control without a learning algorithm deciding things for them. Owners explicitly contrast it with Nest, saying the simpler interface suits them better, and short-term rental owners like how quickly it connects compared with other thermostats they have deployed. It covers up to 2 heat and 2 cool conventional systems and up to 2 heat and 1 cool heat pumps with electric backup, and it replaces the older RTH6580 WiFi. The UWP wall plate is included, which makes both this install and any future upgrade simpler.
What buyers love
Ease of setup is the strongest theme, with several owners calling it the least painful smart thermostat they have connected, in part because pairing happens over Bluetooth so you do not have to split a dual-band network first. Reliability over months of use gets repeated mentions, as does the humidity readout in the app. Older owners specifically praise how legible and uncomplicated the display and controls are compared with more advanced models, and the auto-away function plus filter change reminders cover the automation most households actually use.
What to know before you buy
The app naming trips people up: the thermostat is controlled through the First Alert app by Resideo, not an app called Honeywell, and one owner notes the QR code in the guide did not resolve. A minority report unstable WiFi with the thermostat dropping offline every few hours, and there are the usual regional limits, with a buyer in the UAE unable to use the app at all. This is also the basic model: no touchscreen, no colour display, no room sensors, no occupancy detection and no weather display. A C wire is required.
Is the Honeywell Home X2S worth it?
At the low end of the smart thermostat market, Matter certification plus dual-band WiFi is a genuinely strong combination, and it means this cheap thermostat drops into Apple Home just as easily as into Alexa. You give up the sensors, screen and presence detection of the X8S and T9, which is exactly what makes it cheap. If you want simple scheduling, remote control and broad ecosystem support without paying for features you will not use, it is a sensible pick.
Frequently asked questions
Which app does the Honeywell Home X2S use?
The First Alert app by Resideo. This catches out buyers looking for a Honeywell-branded app, and it is the same app used across Resideo's thermostats, alarms and leak detectors.
Is the X2S Matter certified?
Yes. Resideo lists it as Matter certified, so it can be added to Apple Home, Amazon Alexa, Google Home and other Matter controllers in addition to the First Alert app.
Does it work on 5 GHz WiFi?
Yes. It supports both 2.4 and 5 GHz on 802.11 b/g/n, so you do not need to separate your bands, and initial pairing happens over Bluetooth.
Does it need a C wire?
Yes, 24 VAC common wire is required. A C-wire power adapter may be needed if your system does not already have one.
What systems is it compatible with?
Up to 2 heat and 2 cool conventional systems and up to 2 heat and 1 cool heat pumps with electric backup, plus hot water heat and forced air on gas, oil or electric. It does not work with 120 to 240 V electric baseboard heat.
