Honeywell Home X8S Review: USA Pick

The Honeywell Home X8S enters the premium tier with a different value proposition than its competitors. While the ecobee Premium wins on feature breadth and the Nest 4th Gen wins on design refinement, the X8S wins on display quality, Matter compatibility, and unique integration features like doorbell video.

Honeywell's HVAC heritage gives the X8S strong credibility on the compatibility and reliability front. The brand has decades of experience with American furnaces, heat pumps, and multi-stage systems. That foundation means the X8S is not just a smart gadget - it is a serious HVAC controller with smart features layered on top.

The X8S also represents the clearest signal of where Honeywell Home is heading as a brand. Previous Honeywell thermostats competed on reliability and value. The X8S competes on ambition. That shift makes it the most interesting new entrant in the premium thermostat category for 2026.

The 5-inch touchscreen changes how you interact with a thermostat. In side-by-side testing with the ecobee Premium and Nest 4th Gen, the X8S was the only model where schedule details, temperature readings, and air quality data were fully readable from 8 to 10 feet away. For a device mounted on a wall that you walk past dozens of times a day, that readability matters.

Touch response is smooth and the interface is well-organized. Navigating between temperature control, scheduling, air quality data, and settings feels intuitive. The larger screen allows more information to be displayed simultaneously without cluttering the interface.

The Honeywell Home app handles remote control, scheduling, geofencing, and energy reporting competently. It is functional but not as refined as the Nest or ecobee apps. The app is the X8S's weakest point in daily use, though Honeywell has been improving it with regular updates.

Matter certification means the X8S works with any Matter-compatible smart home platform. Alexa, Google Home, Apple Home, Samsung SmartThings - the X8S connects to all of them through a single standard. This is the strongest cross-platform story in the guide alongside the Nest 4th Gen's own Matter support.

Live doorbell video is genuinely useful in the right home. With a compatible First Alert or Ring camera, the X8S displays a live feed when someone rings the bell. In a central hallway placement, this saved multiple trips to the door for package deliveries during testing. No other thermostat offers this functionality.

Indoor air quality monitoring tracks comfort-relevant metrics and provides actionable suggestions. Combined with the large display, the air quality data is visible at a glance rather than buried in an app menu. For homes with gas cooking or seasonal air quality concerns, this passive monitoring adds real value.

The X8S is built for where the smart home market is heading, not where it has been. Matter support means the thermostat will work with future devices and platforms without needing proprietary bridges or workarounds. That future-proofing is valuable for buyers who plan to keep a thermostat for 5 to 10 years.

Honeywell's HVAC compatibility track record is the bedrock advantage. The brand supports the widest range of American HVAC systems, from simple single-stage furnaces to complex multi-stage heat pumps with accessories. That deep compatibility reduces the risk of wiring surprises during installation.

Room sensors are sold separately, which adds cost if you need them. A single Honeywell Smart Room Sensor runs about $40 to $50. For a two-story home that needs sensor-based comfort balancing, factor in one or two additional sensors when comparing the X8S total cost against the ecobee Premium or Nest 4th Gen which include sensors in the box.

The X8S is the right pick for buyers who want the most technologically current thermostat available. If Matter compatibility, a large readable display, and unique features like doorbell video matter to you, no other thermostat in this guide matches it.

It is also the best choice for mixed-platform smart homes. If you use a combination of Alexa, Google, and Apple devices and do not want to be locked into one ecosystem, the X8S Matter support gives you the most flexibility.

Honeywell loyalists upgrading from an older T-series or RTH-series thermostat will find the X8S is a dramatic step up in every dimension. It finally gives Honeywell Home a flagship that competes with the best from Nest and ecobee.

The biggest caution is track record. The X8S is the newest product in this guide with the fewest long-term user reviews. If you prioritize proven reliability over cutting-edge features, the ecobee Premium and Nest 4th Gen have years more buyer feedback to draw from.

Room sensors are not included, which means the $220 to $250 price buys the thermostat alone. To match the ecobee Premium or Nest 4th Gen sensor-included packages, add $40 to $50 for a Smart Room Sensor. That brings the total cost closer to $270 to $300.

The Honeywell Home app is competent but not best-in-class. It handles scheduling, geofencing, and system monitoring adequately, but the interface and user experience lag behind the ecobee and Nest apps. Honeywell is actively improving it, but as of early 2026, it remains the X8S weakest link.

The Honeywell Home X8S is the smart thermostat for buyers who want to invest in where the market is heading. Its Matter support, 5-inch display, doorbell video integration, and air quality monitoring create a feature combination that no other current thermostat matches.

The trade-off is newness. Less track record, no included sensor, and an app that still needs polish. For buyers who can accept those caveats in exchange for the most technologically ambitious thermostat available, the X8S is a strong and exciting purchase.

For buyers who prefer proven reliability, the ecobee Premium or Nest 4th Gen remain safer choices with longer track records and included sensors.