4 Best ADT Smart Thermostats of 2026

The ecobee Smart Thermostat Essential delivers impressive energy savings without the premium price tag, making it a standout for budget-conscious homeowners who still want smart climate control. With ENERGY STAR certification and the ability to save up to 23% annually on heating and cooling, this thermostat learns your schedule and adjusts automatically—keeping your home comfortable when you’re there and conserving energy when you’re not. Its 85% system compatibility and seamless integration with Alexa, Google Assistant, and Apple HomeKit ensure broad usability, while the color touchscreen and intuitive app make daily control effortless. For those tired of clunky thermostats that drain energy and complicate life, this model offers a smart, no-nonsense fix.

In real-world testing, the Essential shines in homes with irregular schedules, thanks to its eco+ features like time-of-use optimization that pre-cools or pre-heats during off-peak hours. The thermostat performs reliably across gas, electric, and heat pump systems, though DIY installers should note that a C-wire isn’t included, and the Power Extender Kit must be purchased separately if needed. While it lacks built-in occupancy radar or voice control, the ecobee app provides detailed energy reports and remote access, letting you tweak settings from your phone with ease. It handles multi-zone setups when paired with SmartSensors (sold separately), but the extra cost adds up—making this a solid base model that demands add-ons for full functionality.

Compared to the more advanced ecobee Enhanced and Premium models, the Essential trades smart sensing and premium materials for affordability—making it ideal for renters or first-time smart home adopters. It doesn’t match the radar-based occupancy detection of its siblings, nor does it have built-in air quality monitoring, but it delivers the core ecobee experience at a lower entry point. For users who want reliable automation, strong app support, and voice assistant compatibility without bells and whistles, this thermostat hits the sweet spot. While the Premium model offers more integrated features, the Essential provides better value for those who prioritize function over form.

Step into true smart home comfort with the ecobee Smart Thermostat Enhanced, a powerful mid-tier model that blends advanced automation with hassle-free installation. The standout feature here is built-in radar occupancy sensing, which learns your arrival and departure patterns to preheat or pre-cool your home—so it’s always at the perfect temperature when you walk in. With the ability to save up to 26% per year on energy bills and full compatibility with 90% of HVAC systems, this thermostat is engineered for both performance and convenience. The included Power Extender Kit (PEK) removes a major installation barrier, making it a top pick for DIYers without a C-wire.

During real-world use, the Enhanced excels in homes with variable routines, thanks to its adaptive scheduling and humidity-based adjustments. It monitors indoor conditions and fine-tunes output to maintain consistent comfort, whether you’re working from home or sleeping. The thermostat integrates smoothly with Alexa, Google Assistant, and Apple HomeKit, and the ecobee app offers precise remote control from any smartphone or tablet. Adding optional SmartSensors enhances room-by-room comfort, though the lack of a built-in air quality monitor or voice speaker keeps it from matching the Premium model’s luxury tier. It’s worth noting that while the radar detection is accurate, it can occasionally misjudge occupancy in multi-level homes.

Positioned between the Essential and Premium models, the Enhanced delivers the best balance of smart features and value. It outperforms the Essential with built-in occupancy sensing and included PEK, while avoiding the Premium’s higher price and speaker-focused extras. For homeowners who want hands-off automation, reliable energy savings, and seamless setup, this is the sweet spot in the ecobee lineup. Compared to the Honeywell RTH9600WF, it offers smarter occupancy tracking and broader ecosystem support, even without Alexa built in—making it a more future-proof investment for connected homes.

The ecobee Smart Thermostat Premium isn’t just a thermostat—it’s a full smart home command center wrapped in a sleek, metal-clad design. With built-in Alexa or Siri, a high-resolution cinematic display, and integrated air quality monitoring, this model redefines what a thermostat can do. It delivers the same 26% annual energy savings as other ecobee models but goes further by alerting you to poor indoor air, reminding you to change filters, and even streaming video from the ecobee Smart Doorbell Camera. The built-in radar occupancy sensor ensures your home heats or cools only when needed, while the included SmartSensor guarantees comfort in the rooms you use most.

In practical use, the Premium proves its worth in larger, tech-forward homes where convenience and integration matter. The voice-controlled interface lets you adjust temperature, play music, or check the weather without lifting a finger—ideal for hands-free living. Its 95% HVAC compatibility and included Power Extender Kit make installation smooth, even in older homes without a C-wire. During testing, the air quality alerts were particularly useful during allergy season, prompting timely filter changes that improved airflow and comfort. However, the Siri option requires an Apple Home Hub, which may limit some users—while Alexa offers plug-and-play functionality.

When compared to the Enhanced model, the Premium justifies its position as the best overall choice with premium materials, voice assistant integration, and air quality tracking. It outshines the Honeywell RTH9600WF with deeper smart home integration, built-in radar, and a more refined interface—though both require C-wire compatibility. For users who want a thermostat that doubles as a smart speaker, security monitor, and climate optimizer, this is the ultimate package. While it costs more than the Enhanced, the added features deliver unmatched convenience and long-term home intelligence.

The Honeywell Home RTH9600WF makes a bold statement with its vibrant, customizable color touchscreen and deep Alexa integration, offering a unique blend of style and voice-first control. Designed for users who love personalization, the display can shift to any hue, turning a utilitarian device into a design accent. It’s ENERGY STAR certified and helps track energy usage with actionable tips, while flexible programming lets you set schedules or control it remotely via app. For Alexa fans, this thermostat is a dream—fully voice-enabled out of the box, allowing temperature adjustments, weather checks, and even smart home commands without touching a screen.

In real-world use, the RTH9600WF performs well in homes with consistent schedules and strong Wi-Fi, offering reliable control over forced air, heat pumps, and hydronic systems. The on-screen weather forecast and humidity data provide quick insights, and the app delivers solid remote access. However, its reliance on a C-wire is a major limitation—ruling out many older homes unless a power adapter is added. During testing, we found the voice responsiveness excellent, but the lack of occupancy sensing or adaptive learning meant manual adjustments were often needed. It doesn’t auto-adjust when you leave, so energy savings depend heavily on proper setup.

Compared to the ecobee Enhanced, the Honeywell trades smart automation for stronger Alexa integration and visual flair. It lacks radar sensing, humidity-based adjustments, and adaptive scheduling, making it less intelligent over time. However, for users already invested in the Alexa ecosystem who want a colorful, voice-responsive thermostat with straightforward programming, it’s a compelling pick. While the ecobee models offer more automation and broader energy-saving features, the RTH9600WF delivers better voice integration and personalization at the cost of smart adaptability.