Customer Reviews For The Honeywell Home X8S Smart Thermostat with Room Sensor, White

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Craig B

October 2, 2026

Verified Purchase

Awesome unit

This is a great thermostat. I bought this after a referral from a co worker and it has exceeded my expectations. I had a nest before and the programming and app on this is far superior

What makes the X8S a "Smart" thermostat compared to older Wi-Fi models?

The X8S is Matter Certified, meaning it offers seamless compatibility across major smart home platforms like Amazon Alexa, Google Assistant, and Apple Home. It also features Smart Sensing occupancy detection, which automatically adjusts your heating and cooling based on whether people are home, maximizing both comfort and energy savings.

Can I see who is at my door using this thermostat?

Yes. One of the standout features of the X8S is its video integration. When paired with compatible First Alert or Ring video doorbells, you can view a live stream and speak to visitors directly from the thermostat's 5 inch touchscreen display.

Does it require a C-Wire for installation?

Yes. Because of its high-resolution color touchscreen and advanced Wi-Fi features, the X8S is a hardwired device that requires a C-Wire (Common Wire) for power. It is compatible with most modern HVAC systems, including up to 4 Heat/2 Cool heat pump systems and up to 3 Heat/4 Cool conventional systems.

How does the X8S help manage indoor air quality?

Beyond just temperature, the X8S provides precision Indoor Air Quality (IAQ) management. It allows you to monitor and control humidity and ventilation systems directly. It also provides automated alerts for filter changes and system health to ensure your home environment remains healthy.

What are the benefits of the included wireless room sensor?

The wireless room sensor allows you to prioritize the temperature of a specific room, such as a nursery or a home office, rather than relying only on the thermostat’s location in a hallway. This helps eliminate hot and cold spots throughout your home and ensures the rooms you are actually using are kept at your preferred comfort level.

Intuitive Design and Personalized Comfort

The Honeywell Home X8S Smart Thermostat elevates climate control with its sleek, intuitive 5-in. touchscreen display, which offers superb visibility and customizable options for themes and colors to match your home's aesthetic. Central to its design is the ability to deliver precise comfort through the included wireless room sensor. This sensor actively works to reduce uncomfortable hot and cold spots by prioritizing and maintaining the desired temperature in specific, occupied rooms. The Honeywell X8S Thermostat features smart sensing occupancy detection, which intelligently adjusts heating and cooling settings to maximize comfort when residents are present and automatically reduces energy usage when the home is empty.

Seamless Smart Integration and Efficiency

Built for the connected home, the X8S is Matter Certified and offers broad compatibility with major smart platforms, including Amazon Alexa, Google Assistant, and Apple Home. Users can access and adjust settings remotely using the First Alert app, which also simplifies the management of other compatible Resideo devices. The thermostat is ENERGY STAR certified and rebate-eligible, demonstrating its commitment to energy efficiency by providing monthly usage reports to help homeowners monitor and control costs. The X8S enhances home security by supporting integration with select streaming video doorbells (like Ring and First Alert), allowing occupants to see and communicate with visitors directly from the thermostat display.