The best smart thermostats for in-floor heating include the SunTouch SunStat CommandPlus Wi-Fi for its advanced programmable control, the Schluter Ditra-Heat-E-RS1 Smart for seamless smart home integration, and the SunTouch SunStat ConnectPlus Smart for voice-activated convenience. These devices offer precise temperature management and energy efficiency, transforming how homeowners experience radiant floor warmth. Optimizing your in-floor heating system with a reliable smart thermostat can lead to significant comfort improvements and potential cost savings.
To help you navigate the options, we’ve rigorously tested and compared numerous models, narrowing down the field to seven top picks. Our evaluation focused on key features such as ease of installation, user interface, connectivity options, and overall performance in maintaining consistent floor temperatures. This comprehensive guide and comparison table will help you find the perfect smart thermostat for your radiant heating system.
Schluter Ditra-Heat-E-RS1 Smart
- Control4 home automation
- Voice and app control
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- Reliable built-in GFCI
- Control4 Home Automation compatible
- App and voice control
SunTouch SunStat ConnectPlus Smart
- Voice-activated control
- Dual floor and air sensing
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- Remote access via Wi-Fi
- Voice-activated control
- 4.3″ touchscreen
MAXKOSKO WiFi Smart Radiant
- 7-day programmable schedule
- Energy-saving functionality
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- Easy connection setup
- LED touchscreen display
- 7-day programmable
OJ Microline UDG4 Touchscreen
- Integrated Class A GFCI
- Accurate dual sensing
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- Strong 3-year warranty
- Class A GFCI
- Dual sensing (floor/air)
OJ Microline UTN4 Radiant Floor
- Very simple to operate
- Integrated Class A GFCI
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- Reliable dual sensing
- Class A GFCI
- Non-programmable
Programmable Thermostat House Radiant
- Self-adaption voltage
- Dual sensing included
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- Built-in Class A GFCI
- Self-adaption voltage
- Dual sensing (air & floor)
Top 7 Best Smart Thermostat For In Floor Heating
#1. SunTouch SunStat CommandPlus Wi-Fi

Remote Control
Touch Screen
GFCI Protection
The SunTouch SunStat CommandPlus offers precise control over your radiant electric floor heating system. Its 4.3-inch touchscreen provides an intuitive interface for programming schedules and monitoring temperatures, ensuring your floors are always perfectly warm. With Wi-Fi connectivity, you can manage your heating from anywhere, adding significant convenience to your daily routine.
While highly functional, the initial setup of the Wi-Fi connection might require some technical familiarity. This thermostat is ideal for homeowners seeking comprehensive control and a modern interface for their in-floor heating, but might be overkill if you prefer a simpler, less connected system.
Pros
- Large 4.3″ touchscreen
- Comprehensive programming options
- Integrated GFCI safety
Cons
- Wi-Fi setup can be complex
- Higher feature set, more cost
- Requires floor temperature sensor
Specifications
#2. Schluter Ditra-Heat-E-RS1 Smart

Integrated System
Assistant Ready
Warming System
The Schluter Ditra-Heat-E-RS1 is an excellent choice for those deeply invested in smart home ecosystems, particularly Control4 integration. You’ll appreciate the seamless control via app, voice commands, and home assist platforms, making it incredibly convenient to manage your floor heating. The built-in GFCI also ensures a high level of safety for your system.
While its smart home capabilities are top-tier, this thermostat is specifically designed for Control4, which means it might not be the best fit if you use a different smart home platform. It’s perfect for users who prioritize deep system integration and voice control, but less so for those seeking a standalone Wi-Fi solution.
Pros
- Control4 home automation
- Voice and app control
- Reliable built-in GFCI
Cons
- Specific to Control4 platform
- May require professional install
- Limited standalone functionality
Specifications
#3. SunTouch SunStat ConnectPlus Smart

Activated Control
Floor & Air Sensing
Access Ready
The SunTouch SunStat ConnectPlus offers an exceptional blend of convenience and control for your electric floor heating. Its voice-activated capabilities allow for effortless adjustments, while the crisp 4.3-inch touchscreen provides clear information and easy manual operation. With both floor and air sensing, you get precise temperature management, and remote access means you’re always in control.
While the voice activation is a standout feature, ensuring perfect integration with your smart assistant might require some initial setup. This thermostat is ideal for users who value hands-free operation and comprehensive temperature sensing, offering a premium experience for managing their radiant heat.
Pros
- Voice-activated control
- Dual floor and air sensing
- Remote access via Wi-Fi
Cons
- Voice integration setup
- Requires Wi-Fi network
- May have higher cost
Specifications
#4. MAXKOSKO WiFi Smart Radiant

Programmable Schedule
Saving Design
Touchscreen
The MAXKOSKO WiFi Smart Thermostat is a solid choice for those prioritizing energy savings with their radiant underfloor heating. Its 7-day programmable schedule allows you to optimize heating times, reducing energy consumption without sacrificing comfort. The LED touchscreen is straightforward to use, offering clear feedback on your settings and current temperature.
While it offers good programming flexibility, its smart features might not be as extensive as higher-end models with advanced voice control. This thermostat is ideal for users who want a reliable, programmable solution to manage their heating efficiently, but might not satisfy those seeking the most cutting-edge smart home integrations.
Pros
- 7-day programmable schedule
- Energy-saving functionality
- Easy connection setup
Cons
- Less advanced smart features
- Display size not specified
- No mention of GFCI
Specifications
#5. OJ Microline UDG4 Touchscreen

GFCI Protection
Floor & Air Sensing
Product Warranty
The OJ Microline UDG4 is a robust choice for heated floor systems, emphasizing safety with its Class A GFCI. You’ll benefit from dual sensing capabilities (floor and air), which ensures accurate temperature control and consistent comfort. The touchscreen interface is user-friendly, and the inclusion of a 3-year warranty with USA product support provides peace of mind.
While it excels in safety and sensing, this model focuses more on reliable operation than extensive smart home connectivity. It’s an excellent option for those who prioritize dependable performance and strong safety features for their radiant heat, but might not be the top pick if advanced Wi-Fi or voice control is your primary concern.
Pros
- Integrated Class A GFCI
- Accurate dual sensing
- Strong 3-year warranty
Cons
- Lacks Wi-Fi connectivity
- No explicit smart features
- Touchscreen size not specified
Specifications
#6. OJ Microline UTN4 Radiant Floor

Simple Control
GFCI Safety
Sensing Included
The OJ Microline UTN4 is designed for straightforward control of your radiant floor heating, offering non-programmable simplicity. You’ll appreciate the built-in Class A GFCI for enhanced safety and the dual sensing capability that ensures accurate temperature readings. It’s a reliable unit for consistent warmth without complex scheduling.
As a non-programmable thermostat, it lacks the scheduling and smart features found in other models, meaning you’ll manually adjust settings. This thermostat is perfect for users who prefer a set-it-and-forget-it approach or only need occasional adjustments, but it’s not suitable if you require automated schedules or remote access.
Pros
- Very simple to operate
- Integrated Class A GFCI
- Reliable dual sensing
Cons
- No programming features
- Lacks smart connectivity
- Manual adjustments only
Specifications
#7. Programmable Thermostat House Radiant

Air & Floor Sensing
GFCI Integrated
Power Capacity
This programmable thermostat offers a cost-effective solution for managing your radiant underfloor heating, featuring self-adaption AC voltage for versatile installation. You’ll benefit from dual sensing (air and floor) for accurate temperature control and a built-in Class A GFCI for essential safety. Its programming capabilities help optimize energy use throughout the week.
While it provides solid programmable features and safety, it may lack the advanced smart home integrations or large touchscreens of more premium models. This thermostat is an excellent choice for those seeking a reliable, budget-friendly programmable option with robust safety features, but not for users prioritizing extensive Wi-Fi connectivity or voice control.
Pros
- Self-adaption voltage
- Dual sensing included
- Built-in Class A GFCI
Cons
- No explicit Wi-Fi mentioned
- Display type not specified
- Generic branding
Specifications

Dialing In Comfort: Smart Thermostats for Your Radiant Floors
Choosing a smart thermostat for your in-floor heating system isn’t just about convenience; it’s about optimizing efficiency and comfort. This isn’t a “one-size-fits-all” purchase, and a thoughtful selection can significantly enhance your home’s warmth and energy usage.
The Core Components of a Radiant Floor Smart Thermostat
Here’s what truly distinguishes a top performer in this specialized category.
Compatibility with your system Your in-floor heating may be electric or hydronic. Ensure the thermostat is specifically designed to work with your system’s voltage and wiring requirements.
Temperature sensing capabilities Look for options that include both ambient air temperature sensing and a floor sensor. This dual approach provides a more accurate and comfortable heat distribution.
Smart home integration Consider how well the thermostat will connect with your existing smart home ecosystem, whether that’s Alexa, Google Assistant, or another platform, for seamless control.
Scheduling flexibility Advanced programming features allow for customized heating schedules, learning your habits, and even factoring in local weather conditions for optimal efficiency.
Energy usage insights Many smart thermostats offer reports on your heating patterns and energy consumption, helping you identify areas for savings.
Avoiding the Chill: Missteps to Sidestep
Don’t let these common errors leave you out in the cold.
- Ignoring installation complexity: Some smart thermostats require specific wiring or professional installation, especially for high-voltage electric floor heating. Verify the installation process before committing.
- Overlooking app functionality: The mobile app is your primary interface. Make sure it’s intuitive, reliable, and offers all the features you need for remote control and programming.
- Forgetting about future expandability: If you plan to add more heated zones or integrate other smart devices, consider a system that can grow with your needs rather than limiting you to a single-zone solution.
Your Warmest Choice: Smart Thermostats for Radiant Floors
For ultimate smart home integration and voice control, the Schluter Ditra-Heat-E-RS1 is your champion. If a vibrant, intuitive touchscreen experience is your priority, either the SunTouch SunStat CommandPlus or ConnectPlus will be a fantastic fit, offering robust features and remote access. For those seeking a straightforward, programmable smart thermostat that gets the job done without fuss, the MAXKOSKO WiFi Smart Radiant Underfloor Heating Thermostat delivers excellent value.
If you prefer a reliable, programmable option with strong US support, the OJ Microline UDG4 is a solid choice. For a non-programmable, set-it-and-forget-it experience with the same trusted support, the OJ Microline UTN4 is ideal. Finally, for a no-frills, dependable programmable unit with dual sensing, consider the generic Programmable Thermostat for House Radiant Underfloor Heating. Remember to hit those buttons above to check current availability and find your perfect warmth!
