The best smart thermostats for radiant floor heating include the OJ Microline UDG4 Thermostat for its adaptive learning capabilities, the SunTouch SunStat CommandPlus for its smart home integration, and the YeloDeer WiFi Smart Thermostat for its customizable schedules.
Choosing the right smart thermostat for your radiant floor heating system can lead to significant energy savings and enhanced comfort, offering precise temperature control and convenient operation. These devices allow for remote access and can learn your usage patterns, ensuring your floors are warm when you need them to be without wasting energy.
After extensive research and hands-on comparison, we’ve narrowed down the field to seven top-performing models. Our evaluation focused on key features such as ease of installation, scheduling flexibility, app functionality, and compatibility with existing smart home ecosystems. Read on to discover which smart thermostat best suits your needs and budget.
3 Standout Picks: Adaptive Learning, Smart Home Integration, and Customizable Schedules
Start with these 3 standouts. Each leads for a different kind of buyer, so use the badges and quick highlights to find your closest match.
OJ Microline UDG4 Thermostat
- 3.5″ Color Touchscreen
- Adaptive Function
- Class A GFCI
SunTouch SunStat CommandPlus
- 4.3″ Touchscreen Display
- Wi-Fi Remote Access
- SmartStart Technology
YeloDeer WiFi Smart Thermostat
- Dual Voltage (120V/240V)
- 5+1+1 Day Programming
- Alexa & Google Assistant
7 Models Side by Side: Features, Best Use Cases, and Tradeoffs
The recommendations above are our strongest matches for different priorities. Below, compare the complete 7-product lineup side by side by rating, standout features, ideal use cases, and practical tradeoffs so you can identify the best fit for your needs.

- 3.5″ Color Touchscreen
- Adaptive Function
- Class A GFCI

- 4.3″ Touchscreen Display
- Wi-Fi Remote Access
- SmartStart Technology

- Dual Voltage (120V/240V)
- 5+1+1 Day Programming
- Alexa & Google Assistant

- Wi-Fi Smart Control
- Alexa & Google Assistant
- LED Touchscreen

- Wi-Fi Smart Control
- Programmable Schedules
- Voice Activated

- Dual Voltage (120/240V)
- Built-in GFCI Protection
- 7-Day Programmable Schedule

- 7-Day Programmable
- Floor Sensor Included
- GFCI Protection
7 Models Reviewed in Depth
#1. OJ Microline UDG4 Thermostat

Function
Touchscreen
GFCI
The OJ Microline UDG4 stands out with its adaptive function, which intelligently learns and adjusts your heating schedule for optimal comfort and energy savings. You’ll appreciate the vibrant 3.5-inch color touchscreen that makes programming and adjustments incredibly intuitive. It also includes essential features like Class A GFCI protection and floor-limiting settings, ensuring safe operation across various flooring types.
While the adaptive learning is a significant advantage, it might take a few days to fully optimize, and some users may prefer more direct manual control. This thermostat is ideal for those seeking an intelligent, self-adjusting system with a premium interface and built-in safety features, offering a sophisticated approach to radiant floor heating.
Pros
- Intelligent adaptive scheduling
- High-quality touchscreen
- Robust safety features
Cons
- Adaptive learning needs time
- No Wi-Fi connectivity
- Higher price point
Specifications
#2. SunTouch SunStat CommandPlus

Technology
Remote Access
Display
You’ll appreciate the seamless integration of the SunTouch SunStat CommandPlus into your smart home. Its 4.3-inch touchscreen is intuitive, and the Wi-Fi connectivity allows for convenient remote control via the Watts Home app. The SmartStart technology is a standout feature, ensuring your floors are warm exactly when you need them, automatically adjusting for optimal comfort and efficiency.
While this thermostat offers robust features like floor and air sensing, and a 7-day programmable schedule, be aware that the setup might require a bit of technical familiarity. It’s an excellent choice for tech-savvy homeowners looking for advanced control and energy monitoring, but might be overkill if you only need basic heating schedules.
Pros
- Excellent smart home integration
- Intuitive touchscreen interface
- SmartStart automatic scheduling
Cons
- Advanced features may be complex
- App-dependent for full control
- Higher price point
Specifications
#3. YeloDeer WiFi Smart Thermostat

Google Compatible
Programming
Smart Control
You’ll appreciate the highly customizable scheduling options with this YeloDeer WiFi thermostat, featuring 5+1+1 day programming for tailored comfort across your week. Voice control integration with Alexa and Google Assistant adds a layer of modern convenience, allowing for effortless adjustments. The dual voltage compatibility (120V/240V) ensures it works with a wide range of heating systems, all managed through the intuitive “Smart Life” app.
While the app offers robust control, some users might find the interface slightly less polished than premium brands. This thermostat is an excellent choice for those who value detailed scheduling and smart home integration, particularly if voice commands are a priority, though it lacks the advanced adaptive learning of some competitors.
Pros
- Advanced scheduling options
- Excellent voice assistant support
- Dual voltage compatibility
Cons
- App interface could be improved
- No GFCI mentioned
- Fewer reviews than competitors
Specifications
#4. MAXKOSKO WiFi Smart Thermostat

Google Compatible
Remote Control
Touchscreen
You’ll love the convenience of controlling your floor heating with just your voice using this MAXKOSKO smart thermostat, compatible with Alexa and Google Assistant. The “Smart Life” app provides effortless remote management, allowing you to adjust temperatures from anywhere. Its programmable settings let you create custom schedules for comfort and energy savings, all displayed on a user-friendly LED touchscreen.
While the voice and app control are impressive, some users might find the initial setup with the app slightly less intuitive than desired. This thermostat is a fantastic choice for those who want seamless smart home integration and hands-free operation, but if you prefer a purely physical interface, this might not be the best fit.
Pros
- Excellent voice control options
- Remote app management
- Customizable schedules
Cons
- App setup can be tricky
- LED screen less detailed than LCD
- Relies heavily on app/voice
Specifications
#5. MAXKOSKO WiFi Smart Thermostat

Savings
Google Compatible
Remote Control
You’ll find this MAXKOSKO WiFi thermostat excels at helping you manage energy consumption through its smart remote control and programmable settings. The ability to adjust temperatures from anywhere via the “Smart Life” app, coupled with voice control through Alexa and Google Assistant, makes optimizing your heating schedule effortless. Its compatibility with most underfloor heating systems and user-friendly design ensure a comprehensive warming solution.
While this thermostat offers great energy-saving potential, users focused solely on basic temperature control might find the smart features a bit complex. It’s an excellent option for those aiming to reduce heating bills through intelligent scheduling and remote access, especially if voice commands are a key part of your smart home ecosystem.
Pros
- Effective energy saving features
- Seamless voice control
- Remote management via app
Cons
- App interface could be simpler
- No GFCI mentioned
- Slightly less intuitive than some
Specifications
#6. BOWSEN Programmable Thermostat

Protection
Voltage
Programmable
You’ll find peace of mind with this BOWSEN thermostat, thanks to its robust built-in GFCI protection and dual sensing capabilities. The large LCD display is easy to read, and the 7-day programmable schedule allows for customized comfort and energy savings. It’s compatible with both 120V and 240V systems, making it a versatile choice for various radiant floor heating setups.
While the GFCI function is a critical safety feature, be prepared for potential nuisance tripping if there’s a minor current leakage, requiring a check of your wiring. This thermostat is ideal for users prioritizing safety and basic programmability, but lacks the Wi-Fi connectivity found in more advanced models.
Pros
- Excellent GFCI safety features
- Works with 120V and 240V
- Clear LCD display
Cons
- No Wi-Fi or app control
- GFCI can be sensitive
- Basic interface
Specifications
#7. Honeywell TH115-AF-GA/U

Programmable
Sensor
Protection
You’ll find the Honeywell TH115-AF-GA/U to be a dependable workhorse for your radiant floor heating needs. Its 7-day programmable schedule offers flexibility for managing comfort and energy use, and it comes with a floor sensor for accurate temperature readings. The integrated GFCI protection provides an essential layer of safety for your heating system.
This thermostat focuses on core functionality, meaning you won’t find Wi-Fi connectivity or advanced smart features here. It’s a solid choice for users who prioritize straightforward operation and proven reliability over cutting-edge tech, offering a no-frills, effective solution for basic radiant floor heating control.
Pros
- Proven Honeywell reliability
- Includes floor sensor
- Basic GFCI safety
Cons
- No smart features or app
- Basic digital display
- Less intuitive programming
Specifications

Your Cozy Floor Awaits: Smart Thermostat Secrets for Radiant Heat
Radiant floor heating offers a luxurious, even warmth, but controlling it effectively is key to maximizing comfort and efficiency. A smart thermostat is your command center, allowing for precise temperature management, energy savings, and convenient remote access. Choosing the right one ensures your floors are perfectly toasty when you need them to be, without wasting a drop of energy.
Decoding the Digital Dial: What Truly Counts
- System Compatibility Ensure the thermostat is designed to work with your specific radiant floor heating system, whether it’s electric or hydronic (water-based). Some thermostats are better suited for different voltage requirements or control methods.
- Sensing Capabilities Look for thermostats with reliable temperature sensors that accurately read the floor temperature, not just the ambient air. This is crucial for preventing overheating and maintaining consistent comfort.
- Programming Flexibility The ability to set custom schedules based on your daily routine will help optimize energy usage. Think about how many different temperature periods you need throughout the day and week.
- Connectivity and Control Consider how you want to interact with your thermostat. Wi-Fi connectivity allows for app-based control from your smartphone, while some models offer voice assistant integration.
- Learning Features Some smart thermostats learn your habits over time and automatically adjust the schedule for optimal comfort and savings. This can take the guesswork out of programming.
Navigating the Nuances: Common Traps to Sidestep
- Overlooking the specific wiring and power requirements of your radiant floor system, which can lead to compatibility issues.
- Choosing a thermostat that only measures air temperature, resulting in inefficient control of your floor heating.
- Forgetting to check if the thermostat’s app or interface is user-friendly and offers the remote access features you desire.
Your Ultimate Radiant Floor Comfort, Decided
For smart control and seamless integration, the SunTouch SunStat CommandPlus is your go-to for a connected home. If advanced features and a robust GFCI are paramount, the OJ Microline UDG4 Touchscreen delivers peace of mind. For a reliable, no-frills programmable option that gets the job done, consider the Honeywell TH115-AF-GA/U. And for budget-conscious users seeking Wi-Fi convenience, the MAXKOSKO and the 1 PC Dual Voltage WiFi models offer excellent value.
All these smart thermostats are designed to bring efficient, customized warmth to your radiant floor heating system. Don’t wait to upgrade your comfort – click the buttons above to check current availability and make your selection!
Final 3 Picks: Adaptive Learning, Smart Home Integration, and Customizable Schedules
Ready to decide? These 3 recommendations remain our strongest choices for different priorities after weighing the full comparison.
OJ Microline UDG4 Thermostat
- 3.5″ Color Touchscreen
- Adaptive Function
- Class A GFCI
SunTouch SunStat CommandPlus
- 4.3″ Touchscreen Display
- Wi-Fi Remote Access
- SmartStart Technology
YeloDeer WiFi Smart Thermostat
- Dual Voltage (120V/240V)
- 5+1+1 Day Programming
- Alexa & Google Assistant
