Best Smart Thermostats (Non-HomeKit)
Reviewers consistently praise the energy-saving capabilities and remote control convenience of these non-HomeKit smart thermostats. The choice often comes down to individual priorities: Nest for learning, Ecobee for sensors and air quality, and Honeywell/Emerson for reliability and broad compatibility.
1. Google Nest Learning Thermostat (3rd Gen) — 4.6/5
This thermostat excels at learning your schedule and preferences, automatically adjusting temperatures for comfort and energy savings, and integrating seamlessly with the Google Home ecosystem.
Pros
- Self-learning algorithms for energy efficiency
- Sleek design and intuitive interface
- Integration with Google Assistant and Amazon Alexa
- Remote control via mobile app
Cons
- Higher price point
- Learning curve for advanced settings
- Requires C-wire in many installations
Best for: Users prioritizing automated energy savings and seamless integration with Google smart home devices.
2. Ecobee Smart Thermostat Premium — 4.5/5
The Ecobee Smart Thermostat Premium stands out for its remote sensor capabilities, allowing for more even temperature distribution, and its built-in air quality monitor.
Pros
- Includes remote sensors for improved comfort
- Built-in air quality monitor
- Speaker with Alexa integration
- Extensive compatibility with various HVAC systems
Cons
- More complex setup for advanced features
- Higher initial cost
- Design is less minimalist than Nest for some
Best for: Users with multiple rooms who want precise temperature control and air quality monitoring.
3. Honeywell Home T9 Smart Thermostat — 4.3/5
The Honeywell Home T9 offers reliable performance, easy installation, and room sensor technology to focus heating/cooling where it's needed most, making it a strong contender for overall value.
Pros
- Reliable performance and brand reputation
- Easy installation and user-friendly app
- Affordable room sensors (sold separately)
- Works with Amazon Alexa and Google Assistant
Cons
- Sensors are sold separately
- Learning capabilities are less advanced than Nest
- App interface could be more refined
Best for: Users seeking a dependable smart thermostat with room-by-room temperature balancing without breaking the bank.
4. Emerson Sensi Touch Smart Thermostat (ST250) — 4.2/5
Known for its broad HVAC compatibility and straightforward installation, the Sensi Touch is a highly recommended option for those looking for solid smart features without unnecessary complexity.
Pros
- Excellent HVAC compatibility (no C-wire often needed)
- Simple installation and user interface
- Works with Amazon Alexa, Google Assistant, SmartThings
- Geofencing and scheduling features
Cons
- Less aesthetic appeal than competitors
- No integrated learning features
- Screen is less vibrant than Nest/Ecobee
Best for: DIYers and users with older HVAC systems looking for a reliable, easy-to-install smart thermostat.